0000771497-24-000029 | 10-K | XBRL Viewer

Print Document

SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Geographic Information Based on the Country in Which the Sale Originated (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenues
Revenues	$ 8,359.4	$ 8,096.4	$ 7,806.6
United States
Revenues
Revenues	7,760.9	7,565.6	7,335.3
All other countries
Revenues
Revenues	$ 598.4	$ 530.8	$ 471.3

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

LEASES - Schedule of Supplemental Cash and Non-cash Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Leases [Abstract]
Operating cash flows from operating leases	$ 35.3	$ 37.9
Operating cash flows from finance leases	1.1	0.5
Financing cash flows from finance leases	4.2	3.0	$ 1.9
Lease assets obtained in exchange for new operating lease liabilities	$ 20.9	$ 28.7

Insider Trading Arrangements

3 Months Ended

12 Months Ended

Oct. 31, 2024

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

During the quarter ended October 31, 2024, certain of our “officers,” as defined in Rule 16a-1(f) of the Exchange Act, and directors adopted, modified, or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K, as follows:

Trading Arrangements

Name and Title

Action

Date of Action

Rule 10b5-1 Trading Arrangement1

Non-Rule 10b5-1 Trading Arrangement

Aggregate Number of Securities to Be Sold

Aggregate Number of Securities to Be Purchased

Duration

Raúl Valentín, Executive Vice President and Chief Human Resources Officer

Adoption

October 15, 2024

1,639 shares of common stock

From January 14, 2025, until the earlier of (i) the date when all the shares under the plan are sold and (ii) July 14, 2025

(1) Intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Raúl Valentín [Member]

Trading Arrangements, by Individual

Name

Raúl Valentín

Title

Executive Vice President and Chief Human Resources Officer

Rule 10b5-1 Arrangement Adopted

true

October 15, 2024

July 14, 2025

181 days

1,639

INSURANCE - Schedule of Casualty Program Insurance Reserves Rollforward (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Net balance at beginning of year	$ 487.9	$ 479.9	$ 508.3
Change in case reserves plus IBNR Claims — current year	166.2	154.2	145.7
Change in case reserves plus IBNR Claims — prior years	20.3	(14.8)	(36.8)
Claims paid	(157.3)	(131.4)	(129.1)
Acquisition	0.0	0.0	(8.2)
Net balance at end of year	517.3	487.9	479.9
Recoverables	91.0	67.1	71.0
Gross balance at end of year	608.4	555.0	551.0
Reserves related to discontinued operations	$ 0.7	$ 0.1	$ 0.2

- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

+ References + Details

NET INCOME PER COMMON SHARE - Schedule of Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans (Details) - shares shares in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Earnings Per Share [Abstract]
Anti-dilutive (in shares)	0.1	0.3	0.0

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Estimated Annual Amortization Expense (Details) $ in Millions	Oct. 31, 2024 USD ($)
Estimated amortization expense
2025	$ 51.7
2026	44.8
2027	39.0
2028	33.8
2029	$ 28.5

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Oct. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	Oct. 31, 2024	Oct. 31, 2023
Loss Contingencies [Line Items]
Standby letters of credit	$ 57,900,000
Surety bonds and surety-backed letters of credit	854,700,000
Minimum
Loss Contingencies [Line Items]
Amount of reasonably possible loss	0
Maximum
Loss Contingencies [Line Items]
Amount of reasonably possible loss	13,100,000
Pending Litigation
Loss Contingencies [Line Items]
Loss contingency accrual	12,200,000
Energy Savings Contracts
Loss Contingencies [Line Items]
Guarantee obligation	$ 224,200,000	$ 218,000,000.0

ACQUISITIONS (Details) - USD ($)			12 Months Ended
ACQUISITIONS (Details) - USD ($)	Jun. 21, 2024	Sep. 01, 2022	Dec. 31, 2026	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2023	Oct. 31, 2022
Business Acquisition [Line Items]
Goodwill				$ 2,575,900,000		$ 2,491,300,000	$ 2,485,600,000
Quality Uptime
Business Acquisition [Line Items]
Cash purchase price	$ 118,200,000
Business acquisition, goodwill, tax deductible amortization period	15 years
Goodwill				80,600,000
Intangibles acquired				35,200,000
Total assets acquired, excluding goodwill and intangibles				24,000,000.0
Liabilities assumed				21,600,000
Revenues associated with acquisition				26,300,000
RavenVolt
Business Acquisition [Line Items]
Cash purchase price		$ 170,000,000
Contingent consideration payment				0
Fair value of contingent consideration		59,000,000		$ 109,100,000		$ 13,400,000
RavenVolt \| Forecast
Business Acquisition [Line Items]
Maximum contingent consideration payable in future years			$ 130,000,000		$ 75,000,000
RavenVolt \| Maximum
Business Acquisition [Line Items]
Potential post-closing contingent consideration		$ 280,000,000
RavenVolt \| Maximum \| Forecast
Business Acquisition [Line Items]
Potential post-closing contingent consideration			$ 280,000,000

LEASES (Tables)

12 Months Ended

Oct. 31, 2024

Leases [Abstract]

Schedule of Components of Lease assets and Liabilities / Operating Lease Liabilities

The components of lease assets and liabilities and their classification on our Consolidated Balance Sheets were as follows:


		As of October 31,
(in millions)	Classification	2024		2023
Lease assets
Operating leases	Right-of-use assets	$	101.2	$	113.4
Finance leases	Property, plant and equipment, net(1)	20.5		15.2
Total lease assets		$	121.7	$	128.6

Lease liabilities
Current liabilities
Operating leases	Current portion of lease liabilities	$	26.6	$	32.5
Finance leases	Other accrued liabilities	4.5		3.1
Noncurrent liabilities
Operating leases	Long-term lease liabilities	92.0		98.8
Finance leases	Other noncurrent liabilities	15.0		11.1
Total lease liabilities		$	138.1	$	145.5

(1) Finance lease assets are recorded net of accumulated amortization of $23.1 million and $18.9 million as of October 31, 2024 and October 31, 2023, respectively.

The following table includes the weighted-average remaining lease terms, in years, and the weighted-average discount rate used to calculate the present value of operating lease liabilities:


	Year Ended October 31,
	2024		2023
Weighted-average remaining lease term (years)
Operating leases	5.5		5.5
Finance leases	5.3		5.2
Weighted-average discount rate
Operating leases	5.05	%	4.60	%
Finance leases	5.88	%	5.28	%

Schedule of Lease, Cost

The components of lease costs and classification within the Consolidated Statements of Comprehensive Income were as follows:


	Year Ended October 31,
(in millions)	2024		2023
Operating lease costs:
Operating expenses(1)(2)	$	81.6	$	70.6
Selling, general and administrative expenses(3)	26.4		25.4
Finance lease costs:
Operating expenses(4)	4.6		2.4

Interest expense(5)	1.1		0.5
Total lease costs	$	113.8	$	99.0

(1) Related to certain parking arrangements.

(2) Includes short-term lease costs and variable lease costs.

(3) Includes short-term lease costs.

(4) Represents amortization of leased assets.

(5) Interest on lease liabilities.

The following table presents information on short-term and variable lease costs:


	Year Ended October 31,
(in millions)	2024		2023
Short-term lease costs	$	64.0	$	53.5
Variable lease costs	6.8		6.4
Total short-term and variable lease costs	$	70.8	$	59.9

The following table includes supplemental cash and non-cash information related to operating leases:


	Year Ended October 31,
(in millions)	2024		2023
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	35.3	$	37.9
Operating cash flows from finance leases	1.1		0.5
Financing cash flows from finance leases	4.2		3.0
Lease assets obtained in exchange for new operating lease liabilities	20.9		28.7

Schedule of Maturities of Operating Lease Liabilities

The amounts of future undiscounted cash flows related to the lease payments over the lease terms and the reconciliation to the present value of the lease liabilities as recorded on our Consolidated Balance Sheets as of October 31, 2024, are as follows:


(in millions)	Operating Lease Liabilities		Finance Lease Liabilities		Total
Fiscal 2025	$	31.9	$	5.5	$	37.4
Fiscal 2026	29.7		4.7		34.4
Fiscal 2027	22.8		3.1		25.9
Fiscal 2028	16.2		3.1		19.4
Fiscal 2029	11.6		3.1		14.7
Thereafter	25.1		3.1		28.2
Total lease payments	137.2		22.8		160.0
Less: imputed interest	18.5		3.3		21.9
Present value of lease liabilities	$	118.7	$	19.5	$	138.1

Schedule of Maturities of Finance Lease Liabilities


(in millions)	Operating Lease Liabilities		Finance Lease Liabilities		Total
Fiscal 2025	$	31.9	$	5.5	$	37.4
Fiscal 2026	29.7		4.7		34.4
Fiscal 2027	22.8		3.1		25.9
Fiscal 2028	16.2		3.1		19.4
Fiscal 2029	11.6		3.1		14.7
Thereafter	25.1		3.1		28.2
Total lease payments	137.2		22.8		160.0
Less: imputed interest	18.5		3.3		21.9
Present value of lease liabilities	$	118.7	$	19.5	$	138.1

EMPLOYEE BENEFIT PLANS

12 Months Ended

Oct. 31, 2024

Retirement Benefits [Abstract]

EMPLOYEE BENEFIT PLANS

Defined Benefit Plans

We provide benefits to certain employees under various defined benefit and postretirement benefit plans (collectively, the “Plans”). The Plans were previously amended to preclude new participants. All of the Plans are unfunded with the exception of one, which is underfunded.

Information for the Plans


	As of October 31,
(in millions)	2024		2023
Net obligations	$	6.9	$	6.1
Projected benefit obligations(1)	12.5		11.9
Fair value of assets	5.6		5.8

(1) At October 31, 2024 and 2023, total projected benefit obligations related to unfunded and underfunded plans were $12.5 million and $11.9 million, respectively.

At October 31, 2024, assets of the Plans were fully invested in fixed income. The expected return on assets was $0.0 million in 2024, $0.2 million in 2023, and $0.4 million in 2022. The aggregate net periodic benefit cost for all Plans was $0.8 million, $0.6 million, and $0.1 million for 2024, 2023, and 2022, respectively. Future benefit payments in the aggregate are expected to be $11.2 million.

Deferred Compensation Plans

We maintain deferred compensation plans that permit eligible employees and directors to defer a portion of their compensation. At October 31, 2024 and 2023, the total liability of all deferred compensation was $26.7 million and $27.0 million, respectively, and these amounts are included in “Other accrued liabilities” and “Other noncurrent liabilities” on the accompanying Consolidated Balance Sheets. Under one of our deferred compensation plans, a Rabbi trust was created to fund the obligations, and we are required to contribute a portion of the deferred compensation contributions for eligible participants. The assets held in the Rabbi trust are not available for general corporate purposes. At October 31, 2024 and 2023, the fair value of these assets was $4.4 million and $4.0 million, respectively, and these amounts are included in “Other noncurrent assets” on the accompanying Consolidated Balance Sheets. Aggregate expense recognized under these deferred compensation plans was $0.6 million, $0.5 million, and $0.3 million for 2024, 2023, and 2022, respectively.

Defined Contribution Plans

We sponsor two defined contribution plans covering certain employees that are subject to the applicable provisions of the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code (“IRC”). Certain plans permit a company match of a portion of the participant’s contributions or a discretionary contribution after the participant has met the eligibility requirements set forth in the plan. During 2024, 2023, and 2022, we made matching contributions required by the plans of $30.6 million, $29.8 million, and $27.7 million, respectively.

Multiemployer Pension and Postretirement Plans

We participate in various multiemployer pension plans under union and industry-wide agreements that provide defined pension benefits to employees covered by collective bargaining agreements. Because of the nature of multiemployer plans, there are risks associated with participation in these plans that differ from single-employer plans. Assets contributed by an employer to a multiemployer plan are not segregated into a separate account and are not restricted to provide benefits only to employees of that contributing employer. In the event another participating employer in a multiemployer plan no longer contributes to the plan, the unfunded obligations of the plan may be borne by the remaining participating employers, including us. In the event of the termination of a multiemployer pension plan or a withdrawal from a multiemployer pension plan, we could incur material liabilities under applicable law.

Key Information for Individually Significant Multiemployer Defined Benefit Pension Plans(1)

($ in millions)

Pension Protection Act

Zone Status(3)

FIP/RP

Status(4)

Contributions by ABM

Surcharge

Imposed(5)

Expiration Dates of Collective Bargaining Agreements

Pension Fund

EIN/PN(2)

2024

2023

Pending/
Implemented

2024

2023

2022

Building Service 32BJ Pension Fund

13-1879376 / 001

Yellow 6/30/2024

Yellow 6/30/2023

Implemented

22.1

21.4

22.7

10/15/2027 - 12/31/2027

S.E.I.U National Industry Pension Fund

52-6148540 / 001

Red 12/31/2023

Red 12/31/2022

Implemented

19.4

19.3

17.6

Yes

6/30/2025 - 7/31/2028

Central Pension Fund of the IUOE & Participating Employers

36-6052390 / 001

Green 1/31/2024

Green 1/31/2023

N/A*

12.4

13.0

12.8

N/A*

12/31/2024 - 6/30/2029

SEIU Local 1 & Participating Employers Pension Trust

36-6486542 / 001

Green 9/30/2023

Green 9/30/2022

N/A*

4.3

4.8

5.8

N/A*

5/31/2026 - 4/4/2027

Western Conference of Teamsters Pension Plan

91-6145047 / 001

Green 12/31/2023

Green 12/31/2022

N/A*

2.7

2.4

2.2

N/A*

11/30/2026 - 12/31/2029

IUOE Stationary Engineers Local 39 Pension Plan

94-6118939 / 001

Green 12/31/2023

Green 12/31/2022

N/A*

2.5

4.6

4.4

N/A*

8/31/2029

All Other Plans:

13.9

8.0

8.2

Total Contributions

77.3

73.6

73.8

*Not applicable

(1) To determine individually significant plans, we evaluated several factors, including our total contributions to the plan, our significance to the plan in terms of participating employees and contributions, and the funded status of the plan.

(2) The “EIN/PN” column provides the Employer Identification Number and the three-digit plan number assigned to the plan by the IRS.

(3) The Pension Protection Act Zone Status columns provide the two most recently available Pension Protection Act zone status reports from each plan. The zone status is based on information provided to us and other participating employers and is certified by each plan’s actuary. Among other factors, plans in the red zone are generally less than 65% funded, plans in the yellow zone are less than 80% funded, and plans in the green zone are at least 80% funded.

(4) Indicates whether a Financial Improvement Plan (“FIP”) for yellow zone plans or a Rehabilitation Plan (“RP”) for red zone plans is pending or implemented.

(5) Indicates whether our contribution in 2024 included an amount as imposed by a plan in the red zone in addition to the contribution rate specified in the applicable collective bargaining agreement.

Multiemployer Pension Plans for which ABM Is a Significant Contributor


Pension Fund						Contributions to the plan exceeded more than 5% of total contributions per most currently available Forms 5500 (as of the plan’s year end)
Apartment Employees Trust Fund*						12/31/2022 and 12/31/2021
Arizona Sheet Metal Pension Trust Fund*						6/30/2023, 6/30/2022,and 6/30/2021
Building Service 32BJ Pension Fund						6/30/2023, 6/30/2022,and 6/30/2021
Building Service Pension Plan*						4/30/2023, 4/30/2022, and 4/30/2021
Central Pennsylvania Teamsters Defined Benefit Plan*						12/31/2023
Central Pension Fund of the IUOE & Participating Employers						1/31/2024 and 1/31/2023
Contract Cleaners Service Employees' Pension Plan*						12/31/2022 and 12/31/2021
IUOE Local 30 Pension Fund*						12/31/2023 and 12/31/2022
IUOE Stationary Engineers Local 39 Pension Plan						12/31/2023, 12/31/2022, and 12/31/2021
Local 210's Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
Local 670 Pension Plan*						12/31/2023, 12/31/2022
Local 68 Engineers Union Pension Plan*						6/30/2023
Local 808 IBT Pension Fund*						9/30/2023
Massachusetts Service Employees Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
S.E.I.U National Industry Pension Fund						12/31/2023, 12/31/2022, and 12/31/2021
SEIU Local 1 & Participating Employers Pension Trust						9/30/2023, 9/30/2022, and 9/30/2021
Service Employees International Union Local 1 Cleveland Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
Service Employees International Union Local 32BJ, District 36 Building Operators Pension Trust Fund*						12/31/2023, 12/31/2022, and 12/31/2021
Teamsters Local 617 Pension Fund*						2/28/2023, 2/28/2022, and 2/28/2021
Teamsters Local Union No. 727 Pension Plan*						2/28/2023
U.S.W.U. Local 74 Welfare Fund*						12/31/2023, 12/31/2022, and 12/31/2021

* These plans are not separately listed in our multiemployer table as they represent an insignificant portion of our total multiemployer pension plan contributions.

Multiemployer Defined Contribution Plans

In addition to contributions noted above, we also make contributions to multiemployer defined contribution plans. During 2024, 2023, and 2022, our contributions to the defined contribution plans were $54.5 million, $59.2 million, and $54.7 million, respectively.

Other Multiemployer Benefit Plans

We also contribute to several multiemployer postretirement health and welfare plans based on obligations arising under collective bargaining agreements covering union-represented employees. These plans may provide medical, pharmacy, dental, vision, mental health, and other benefits to employees as determined by the trustees of each plan. The majority of our contributions benefit active employees and, as such, may not constitute contributions to a postretirement benefit plan. However, since we are unable to separate contribution amounts to postretirement benefit plans from contribution amounts paid to benefit active employees, we categorize all such amounts as contributions to postretirement benefit plans. During 2024, 2023, and 2022, our contributions to such plans were $434.1 million, $441.8 million, and $426.6 million, respectively. There have been no significant changes that affect the comparability of total contributions for any of the periods presented

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715/tableOfContent

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-3

+ Details

SEGMENT AND GEOGRAPHIC INFORMATION (Tables)

12 Months Ended

Oct. 31, 2024

Segment Reporting [Abstract]

Schedule of Financial Information by Reportable Segment

Financial Information by Reportable Segment


	Year Ended October 31,
(in millions)	2024		2023		2022
Revenues
Business & Industry	$	4,059.1	$	4,089.4	$	4,095.9
Manufacturing & Distribution	1,554.3		1,526.7		1,445.2
Aviation	1,032.6		925.7		804.0
Education	904.0		880.4		834.7
Technical Solutions	809.3		674.2		626.8

	$	8,359.4	$	8,096.4	$	7,806.6
Operating profit (loss)
Business & Industry	$	307.0	$	315.6	$	334.9
Manufacturing & Distribution	166.3		161.7		161.8
Aviation	59.1		60.0		29.3
Education	55.3		49.7		47.1
Technical Solutions(1)	69.4		53.2		63.8
Government Services	—		—		(0.3)
Corporate(2) (3)	(433.1)		(226.6)		(284.5)
Adjustment for income from unconsolidated affiliates, included in Aviation and Technical Solutions	(6.5)		(3.9)		(2.4)
Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions	(5.5)		(0.3)		(0.9)
	212.0		409.5		348.8
Income from unconsolidated affiliates	6.5		3.9		2.4
Interest expense	(85.0)		(82.3)		(41.1)
Income before income taxes	$	133.6	$	331.1	$	310.0

Depreciation and amortization
Business & Industry	$	37.3	$	44.9	$	47.1
Manufacturing & Distribution	12.2		13.1		13.4
Aviation	12.6		9.6		8.2
Education	21.8		22.5		25.4
Technical Solutions	7.7		17.5		7.0

Corporate	15.0		13.1		11.4
	$	106.6	$	120.7	$	112.4

(1) Reflects a $7.6 million gain on the sale of assets during the year ended October 31, 2022.

(2) Reflects adjustments to the fair value of the contingent consideration payable related to the RavenVolt Acquisition of $95.7 million during the year ended October 31, 2024.

(3) Reflects adjustments to the fair value of the contingent consideration payable related to the RavenVolt Acquisition of $45.6 million and an employee retention credit totaling $24.0 million during the year ended October 31, 2023.

Schedule of Geographic Information Based on the Country in Which the Sale Originated

Geographic Information Based on the Country in Which the Sale Originated(1)


	Year Ended October 31,
(in millions)	2024		2023		2022
Revenues
United States	$	7,760.9	$	7,565.6	$	7,335.3
All other countries	598.4		530.8		471.3
	$	8,359.4	$	8,096.4	$	7,806.6

(1) Substantially all of our long-lived assets are related to U.S. operations.

SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	May 01, 2006
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Exercisable rate	50.00%
Total unrecognized compensation cost, net of estimated forfeitures	$ 25,700,000
Weighted-average vesting period	1 year 10 months 24 days
Fair value per share of awards granted (in USD per share)	$ 41.32	$ 44.37	$ 41.63
Total fair value of RSUs vested	$ 15,700,000	$ 17,100,000	$ 16,400,000
RSUs \| Certain Executive Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum service period at retirement	10 years
Grant period prior to termination	1 year
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Total unrecognized compensation cost, net of estimated forfeitures	$ 17,000,000.0
Weighted-average vesting period	1 year 10 months 24 days
Fair value per share of awards granted (in USD per share)	$ 41.62	$ 46.47	$ 43.06
Total fair value of RSUs vested	$ 12,300,000	$ 14,600,000	$ 13,600,000
Service period	3 years
Performance shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable rate	0.00%
Performance shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable rate	150.00%
2006 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	0
2021 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	3,975,000
Number of shares available for grant (in shares)	1,308,462
2004 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	4,000,000
Fair value percentage of common stock price				95.00%
Employee contribution percentage				10.00%
Maximum annual employee contribution				$ 25,000
Holding period for shares purchased in program	6 months
Number of shares unissued (in shares)	274,465

CREDIT FACILITY (Tables)

12 Months Ended

Oct. 31, 2024

Debt Disclosure [Abstract]

Schedule of Components of Debt


	As of October 31,
(in millions)	2024		2023
Current portion of long-term debt(1)(2)
Gross term loan	$	32.5	$	32.5
Unamortized deferred financing costs	(0.9)		(1.0)
Current portion of term loan	$	31.6	$	31.5



Long-term debt(1)(2)
Gross term loan	$	503.8	$	536.3
Unamortized deferred financing costs	(0.6)		(1.5)
Total noncurrent portion of term loan	503.2		534.8
Revolving line of credit(3)	799.0		745.0
Long-term debt	$	1,302.2	$	1,279.8

(1) At October 31, 2024, and October 31, 2023, the weighted average interest rate on our outstanding borrowings, not including letters of credit and swaps, was 6.68%.and 7.17%, respectively.

(2) At October 31, 2024, we had borrowing capacity of up to $423.6 million

(3) At October 31, 2024 standby letters of credit amounted to $57.9 million

Schedule of Long-Term Loan Maturities

As of October 31, 2024, the following principal payments are required under the Amended Credit Facility.


(in millions)	2025		2026		2027		2028		2029
Debt maturities	$	32.5	$	1,302.8	$	—	$	—	$	—

Schedule of Interest Rate Swap

Notional Amount

Fixed Interest Rate

Effective Date

Maturity Date

$ 100.0 million

1.72%

February 9, 2022

June 28, 2026

$ 150.0 million

1.85%

February 25, 2022

June 28, 2026

$ 100.0 million

2.88%

May 4, 2022

June 28, 2026

$161.9 million(1)

2.83%

July 7, 2022

June 28, 2026

$13.1 million(1)

2.79%

July 18, 2022

June 28, 2026

$ 170.0 million

3.81%

November 1, 2022

June 28, 2026

(1) In July 2022, we entered into amortizing interest rate swap agreements with notional values totaling $300.0 million at inception. The notional amount reduces to $100.0 million in October 2025 before maturing on June 28, 2026.

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69E

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-8

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-6

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-7

+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Oct. 31, 2024

Accounting Policies [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The Financial Statements have been prepared in accordance with United States generally accepted accounting principles (“U.S. GAAP”) and with the rules and regulations of the SEC, specifically Regulation S-X and the instructions to Form 10-K. Unless otherwise indicated, all references to years are to our fiscal year, which ends on October 31.

The Financial Statements include the accounts of ABM and all of our consolidated subsidiaries. We account for ABM’s investments in unconsolidated affiliates under the equity method of accounting. We include the results of acquired businesses in the Consolidated Statements of Comprehensive Income from their respective acquisition dates. All intercompany accounts and transactions have been eliminated in consolidation.

The preparation of consolidated financial statements in accordance with U.S. GAAP requires our management to make certain estimates that affect reported amounts. We base our estimates on historical experience, known or expected trends, independent valuations, and various other assumptions that we believe to be reasonable under the circumstances. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates.

We round amounts in the Financial Statements to millions and calculate all percentages and per-share data from the underlying whole-dollar amounts. Thus, certain amounts may not foot, crossfoot, or recalculate based on reported numbers due to rounding.

Cash and Cash Equivalents

We consider all highly liquid securities with an original maturity of three months or less to be cash and cash equivalents. As part of our cash management system, we use “zero balance” accounts to fund our disbursements. Under this system, at the end of each day the bank balance is zero, while the book balance is usually a negative amount due to reconciling items, such as outstanding checks. We report the changes in these book cash overdrafts as cash flows from financing activities.

Trade Accounts Receivable and Costs Incurred in Excess of Amounts Billed

Trade accounts receivable arise from services provided to our clients and are usually due and payable on varying terms from receipt of the invoice to net 60 days, with the exception of certain Technical Solutions project receivables that may have longer collection periods. These receivables are recorded at the invoiced amount and normally do not bear interest. In addition, our trade accounts receivable include unbilled receivables, such as invoices for services that have been provided but are not yet billed.

Costs incurred in excess of amounts billed arise from Technical Solutions project contracts that typically provide for a schedule of billings or invoices to the client based on our performance to date of specific tasks inherent in the fulfillment of our performance obligation(s). The schedules for such billings usually do not precisely match the schedule on which costs are incurred. As a result, revenues generally differ from amounts that can be billed or invoiced to the client at any point during the contract.

Allowance for Doubtful Accounts

We determine the allowance for doubtful accounts based on historical write-offs, known or expected trends, and the identification of specific balances deemed uncollectible. For the specifically identified balances, we establish the reserve upon the earlier of a client’s inability to meet its financial obligations or after a period of 12 months, unless our management believes such amounts will ultimately be collectible.

Sales Allowance

In connection with our service contracts, we periodically issue credit memos to our clients that are recorded as a reduction in revenues and an increase to the allowance for billing adjustments. These credits can result from client vacancy discounts, job cancellations, property damage, and other items. We estimate our potential future losses on these client receivables based on an analysis of the historical rate of sales adjustments (credit memos, net of re-bills) and known or expected trends.

Other Current Assets

At October 31, 2024 and 2023, other current assets primarily consisted of other receivables, short-term insurance recoverables, and capitalized commissions.

Other Investments

At October 31, 2024 and 2023, other investments primarily consisted of preferred equity investments and investments in unconsolidated affiliates and were $30.8 million and $28.8 million, respectively. We did not recognize any impairment charges on these investments in 2024, 2023, or 2022.

Property, Plant and Equipment

We record property, plant and equipment at cost. Repairs and maintenance expenditures are expensed as incurred. In contrast, we capitalize major renewals or replacements that substantially extend the useful life of an asset. We determine depreciation for financial reporting purposes using the straight-line method over the following estimated useful lives:


Category			Years
Computer equipment and software			3–7
Machinery and other equipment			3–5
Transportation equipment			1.5–10
Buildings			10–40
Furniture and fixtures			5

In addition, we depreciate assets under finance leases and leasehold improvements over the shorter of their estimated useful lives or the remaining lease term. Upon retirement or sale of an asset, we remove the cost and accumulated depreciation from our Consolidated Balance Sheets. When applicable, we record corresponding gains or losses within the accompanying Consolidated Statements of Comprehensive Income.

Leases

We account for our leases in accordance with ASU 2016-02, Leases (Topic 842). Topic 842 requires lessees to recognize substantially all leases on their balance sheet as a right-of-use (“ROU”) asset and a lease liability. We made the accounting policy election to not recognize leases with an initial term of 12 months or less on

the balance sheet and will expense payments for such leases on a straight-line basis over the lease term. We also elected to not separate lease components from non-lease components.

We enter into various noncancelable lease agreements for office space, parking facilities, warehouses, vehicles, and equipment used in the normal course of business. We determine if an arrangement is a lease at inception and begin recording lease activity at the commencement date. ROU assets and lease liabilities are recognized based on the present value of lease payments over the lease term with lease expense recognized on a straight-line basis. The present value of future lease payments is determined using our incremental borrowing rate (“IBR”) unless the implicit rate in the lease is readily determinable. Our IBR is equal to our rate of interest adjusted for term differences. This IBR is applied to the minimum lease payments within each lease agreement to determine the amounts of our ROU assets and lease liabilities.

Our lease terms range from one to 20 years. Some leases include options to renew or extend. We typically include extension options in a lease term when it is reasonably certain that we will exercise that option and when doing so is at our sole discretion. Certain equipment and vehicle leases may also include options to purchase the leased property. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Typically, if we decide to cancel or terminate a lease before the end of its term, then we would owe the lessor the remaining lease payments under the term of such lease. Our lease agreements generally do not contain any material residual value guarantees or material restrictive covenants. We may rent or sublease certain real estate assets that we no longer use to third parties.

Lease agreements may contain rent escalation clauses, rent holidays, or certain landlord incentives, including tenant improvement allowances. ROU assets include amounts for scheduled rent increases and are reduced by lease incentive amounts.

Certain of our lease agreements include variable rent payments consisting primarily of rental payments adjusted periodically for inflation, maintenance, and utilities. These costs are expensed as incurred. Certain of our parking arrangements also contain variable rent payments that are a percentage of parking services revenue based on contractual levels. We record contingent rent as it becomes probable that specified targets will be met. Variable rent lease components are not included in the lease liability.

Service concession arrangements within the scope of ASU No. 2017-10, Service Concession Arrangements (Topic 853): Determining the Customer of the Operation Services, are excluded from the scope of Topic 842. Rent expenses associated with these arrangements are recorded as a reduction of revenues. See Note 4, “Revenues,” for further discussion.

Goodwill and Other Intangible Assets

Goodwill represents the excess purchase price of acquired businesses over the fair value of the assets acquired and liabilities assumed. We have elected to make the first day of our fourth quarter, August 1, the annual impairment assessment date for goodwill. However, we could be required to evaluate the recoverability of goodwill more often if impairment indicators exist. Goodwill is tested for impairment at a “reporting unit” level by performing either a qualitative evaluation or a quantitative test. The qualitative evaluation is an assessment of factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. We may elect not to perform the qualitative assessment for some or all reporting units and instead perform a quantitative test under which we estimate the fair value using a weighting of fair values derived from an income approach and a market approach. The discounted estimates of future cash flows include significant management assumptions, such as revenue growth rates, operating margins, weighted average cost of capital, and future economic and market conditions.

Other intangible assets primarily consist of acquired customer contracts and relationships that are amortized using the sum-of-the-years’-digits method over their useful lives, consistent with the estimated useful life considerations used in the determination of their fair values. This accelerated method of amortization reflects the pattern in which the economic benefits from the intangible assets of customer contracts and relationships are expected to be realized. We amortize other non-customer acquired intangibles using a straight-line method of amortization. We evaluate other intangible assets, as well as our long-lived assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. When this occurs, a recoverability test is performed that compares the projected undiscounted cash flows from the use and eventual disposition of an asset or asset group to its carrying amount. If the projected undiscounted cash flows are

less than the carrying amount, then we calculate an impairment loss. The impairment loss calculation compares the fair value, which is based on projected discounted cash flows, to the carrying value.

See Note 9, “Goodwill and Other Intangible Assets,” for further information on goodwill, other intangible assets, and impairment charges.

Other Noncurrent Assets

At October 31, 2024 and 2023, other noncurrent assets primarily consisted of long-term insurance recoverables, cloud computing arrangements, capitalized commissions, interest rate swap assets, prepayments to carriers for future insurance claims, and insurance deposits.

Federal Energy Savings Performance Contract Receivables

As part of our Technical Solutions business, we enter into ESPCs with the federal government pursuant to which we agree to develop, design, engineer, and construct a project and to guarantee that the project will satisfy agreed-upon performance standards. ESPC receivables represent the amount to be paid by various federal government agencies for work we have satisfactorily performed under specific ESPCs. We assign certain of our rights to receive those payments to unaffiliated third parties that provide construction financing, which we record as a liability, for such contracts. This construction financing is recorded as cash flows from financing activities, while the use of the cash received to pay project costs under these arrangements is classified as operating cash flows. The ESPC receivable is recognized as revenue as each project is constructed. Upon completion and acceptance of the project by the government and upon satisfaction of true sale criteria, the assigned ESPC receivable from the government and corresponding ESPC liability are eliminated from our consolidated financial statements.

Fair Value of Financial Instruments

Fair value is the price we would receive to sell an asset or pay to transfer a liability in an orderly transaction with a market participant at the measurement date. In the absence of active markets for identical assets or liabilities, such measurements involve developing assumptions based on market observable data and, in the absence of such data, internal information that is consistent with what market participants would use in a hypothetical transaction that occurs at the measurement date.

Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. Preference is given to observable inputs. These two types of inputs create the following fair value hierarchy:

Level 1 – Quoted prices for identical instruments in active markets;

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable; and

Level 3 – Significant inputs to the valuation model are unobservable.

We evaluate assets and liabilities subject to fair value measurements on a recurring and non-recurring basis to determine the appropriate level at which to classify them for each reporting period. Some non-financial assets are measured at fair value on a non-recurring basis only in certain circumstances, including the event of impairment. See Note 7, “Fair Value of Financial Instruments,” for the fair value hierarchy table and for details on how we measure fair value for our assets and liabilities.

Insurance Reserves

We use a combination of insured and self-insurance programs to cover workers’ compensation, general liability, automobile liability, property damage, and other insurable risks. Insurance claim liabilities represent our estimate of retained risks without regard to insurance coverage. We retain a substantial portion of the risk related to certain workers’ compensation and medical claims. Liabilities associated with these losses include estimates of both filed claims and IBNR Claims.

With the assistance of third-party actuaries, we review our estimate of ultimate losses for actual and IBNR Claims on a quarterly basis and adjust our required self-insurance reserves as appropriate. See Note 10, “Insurance,” for further details on the quarterly review procedures. As part of this evaluation, we review the status of

existing and new claim reserves as established by third-party claims administrators. The third-party claims administrators establish the case reserves based upon known factors related to the type and severity of the claims, demographic factors, legislative matters, and case law, as appropriate. We compare actual trends to expected trends and monitor claims developments. The specific case reserves estimated by the third-party administrators are provided to an actuary who assists us in projecting an actuarial estimate of the overall ultimate losses for our self-insured or high deductible programs, which includes the case reserves plus an actuarial estimate of reserves required for additional developments, such as IBNR Claims. We utilize the results of actuarial studies to estimate our insurance rates and insurance reserves for future periods and to adjust reserves, if appropriate, for prior years.

In general, our insurance reserves are recorded on an undiscounted basis. We allocate current-year insurance expense to our operating segments based upon their underlying exposures, while actuarial adjustments related to prior year claims are recorded within Corporate expenses. We classify claims as current or long-term based on the expected settlement date. Estimated insurance recoveries related to recorded liabilities are reflected as assets in our Consolidated Balance Sheets when we believe the receipt of such amounts is probable.

Other Accrued Liabilities

At October 31, 2024 and 2023, other accrued liabilities primarily consisted of the short-term contingent consideration liability, employee benefits, contract liabilities, ESPC liabilities, unclaimed property, legal fees and settlements, and dividends payable

Other Noncurrent Liabilities

At October 31, 2024 and 2023, other noncurrent liabilities primarily consisted of the long-term contingent consideration liability, deferred compensation, long-term finance leases, and retirement plan liabilities.

Contracts with Customers

We account for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance, and collectability of consideration is probable. Once a contract is identified, we evaluate whether it is a combined or single contract and whether it should be accounted for as more than one performance obligation. Generally, most of our contracts are cancelable by either party without a substantive penalty, and the majority of our contracts have a notification period of 30 to 90 days. If a contract includes a cancellation clause, the remaining contract term is limited to the required termination notice period.

At contract inception, we assess the services promised to our customers and identify a performance obligation for each promise to transfer to the customer a service, or a bundle of services, that is distinct. To identify the performance obligation, we consider all of our services promised in the contract, regardless of whether they are explicitly stated or are implied by customary business practices.

The majority of our contracts contain multiple promises that represent an integrated bundle of services comprised of activities that may vary over time; however, these activities fulfill a single integrated performance obligation since we perform a continuous service that is substantially the same and has the same pattern of transfer to the customer. Our performance obligations are primarily satisfied over time as we provide the related services. We allocate the contract transaction price to this single performance obligation and recognize revenue as the services are performed, as further described in “Contract Types” below.

Certain arrangements involve variable consideration (primarily per transaction fees, reimbursable expenses, and sales-based royalties). We do not estimate the variable consideration for these arrangements; rather, we recognize these variable fees in the period they are earned. Some of our contracts, often related to Airline Services, may also include performance incentives based on variable performance measures that are ascertained exclusively by future performance and therefore cannot be estimated at contract inception and are recognized as revenue once known and mutually agreed upon. We include estimated amounts in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based largely on an assessment of our anticipated performance and all information (historical, current, and forecasted) that is reasonably available to us.

We primarily account for our performance obligations under the series guidance, using the as-invoiced practical expedient when applicable. We apply the as-invoiced practical expedient to record revenue as the services

are provided, given the nature of the services provided and the frequency of billing under the customer contracts. Under this practical expedient, we recognize revenue in an amount that corresponds directly with the value to the customer of our performance completed to date and for which we have the right to invoice the customer.

We typically bill customers on a monthly basis and have the right to consideration from customers in an amount that corresponds directly with the performance obligation satisfied to date. The time between completion of the performance obligation and collection of cash is generally 30 to 60 days. Sales-based taxes are excluded from revenue.

Contracts generally can be modified to account for changes in specifications and requirements. We consider contract modifications to exist when the modification either changes the consideration, creates new performance obligations, or changes the existing scope of the contract and related performance obligations. Historically, contract modifications have been for services that are not distinct from the existing contract, since we are providing a bundle of services that are highly interrelated, and are therefore treated as if they were part of that existing contract. Such modifications are generally accounted for retrospectively as part of the existing contract.

Contract Types

We have arrangements under various contract types, as described below.

Monthly Fixed-Price

Monthly fixed-price arrangements are contracts in which the client agrees to pay a fixed fee every month over a specified contract term. We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Square-Foot

Square-foot arrangements are contracts in which the client agrees to pay a fixed fee every month based on the actual square footage serviced over a specified contract term. We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Cost-Plus

Cost-plus arrangements are contracts in which the clients reimburse us for the agreed-upon amount of wages and benefits, payroll taxes, insurance charges, and other expenses associated with the contracted work, plus a profit margin. We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Work Orders

Work orders generally consist of supplemental services requested by clients outside of the standard service specification and include cleanup after tenant moves, construction cleanup, flood cleanup, and snow removal. The nature of these short-term contracts involves performing one-off type services, and revenue is recognized at the agreed-upon contractual amount over time as the services are provided, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Transaction-Price

Transaction-price contracts are arrangements in which customers are billed a fixed price for each transaction performed on a monthly basis (e.g., wheelchair passengers served, airplane cabins cleaned). We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Hourly

Hourly arrangements are contracts in which the client is billed a fixed hourly rate for each labor hour provided. We measure progress toward satisfaction of the performance obligation as the services are provided, and

revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Management Reimbursement

Under management reimbursement arrangements, we manage a parking facility for a management fee and pass through the revenue and expenses associated with the facility to the owner. We measure progress toward satisfaction of the performance obligation over time as the services are provided. Under these contracts we recognize both revenues and expenses, in equal amounts, that are directly reimbursed from the property owner for operating expenses, as such expenses are incurred. Such revenues do not include gross customer collections at the managed locations, because they belong to the property owners. We have determined we are the principal in these transactions, because the nature of our performance obligation is for us to provide the services on behalf of the customer and we have control of the promised services before they are transferred to the customer.

Management reimbursement revenue was $318.2 million, $302.3 million, and $280.6 million during 2024, 2023, and 2022, respectively.

Leased Location

Under leased location parking arrangements, we pay a fixed amount of rent, plus a percentage of revenues derived from monthly and transient parkers, to the property owner. We retain all revenues received, and we are responsible for most operating expenses incurred. We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Rental expense and certain other expenses under contracts that meet the definition of service concession arrangements are recorded as a reduction of revenue.

Allowance

Under allowance parking arrangements, we are paid a fixed amount or hourly rate to provide parking services, and we are responsible for certain operating expenses that are specified in the contract. We measure progress toward satisfaction of the performance obligation as the services are provided, and revenue is recognized at the agreed-upon contractual rate over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Energy Savings Contracts and Fixed-Price Repair and Refurbishment

Under energy savings contracts and fixed-price repair and refurbishment arrangements, we agree to develop, design, engineer, and construct a project. Additionally, as part of bundled energy solutions arrangements, we guarantee the project will satisfy agreed-upon performance standards.

We use the cost-to-cost method, which compares the actual costs incurred to date with the current estimate of total costs to complete, to measure the satisfaction of the performance obligation and recognize revenue as work progresses and we incur costs on our contracts; we believe this method best reflects the transfer of control to the customer. This measurement and comparison process requires updates to the estimate of total costs to complete the contract, and these updates may include subjective assessments and judgments. Equipment purchased for these projects is project-specific and considered a value-added element to our work. Equipment costs are incurred when the title is transferred to us, typically upon delivery to the work site. Revenue for uninstalled equipment is recognized at cost and the associated margin is deferred until installation is substantially complete.

We recognize revenue over time for all of our services as we perform them, because (i) control continuously transfers to the customer as work progresses, or (ii) we have the right to bill the customer as costs are incurred. The customer typically controls the work in process, as evidenced either by contractual termination clauses or by our rights to payment for work performed to date plus a reasonable profit to deliver products or services that do not have an alternative use to us.

Certain project contracts include a schedule of billings or invoices to the customer based on our job-to-date percentage of completion of specific tasks inherent in the fulfillment of our performance obligation(s) or in accordance with a fixed billing schedule. Fixed billing schedules may not precisely match the actual costs incurred. Therefore, revenue recognized may differ from amounts that can be billed or invoiced to the customer at any point during the contract, resulting in balances that are considered revenue recognized in excess of amounts billed or

amounts billed in excess of revenue recognized. Advanced payments from our customers generally do not represent a significant financing component as the payments are used to meet working capital demands that can be higher in the early stages of a contract, as well as to protect us from our customer failing to meet its obligations under the contract.

Certain projects include service maintenance agreements under which existing systems are repaired and maintained for a specific period of time. We generally recognize revenue under these arrangements over time. Our service maintenance agreements are generally one-year renewable agreements.

Franchise

We franchise certain engineering services through individual and area franchises under the Linc Service and TEGG brands, which are part of ABM Technical Solutions. Initial franchise fees result from the sale of a franchise license and include the use of the name, trademarks, and proprietary methods. The franchise license is considered symbolic intellectual property, and revenue related to the sale of this right is recognized at the agreed-upon contractual amount over the term of the initial franchise agreement.

Royalty fee revenue consists of sales-based royalties received as part of the consideration for the franchise right, which is calculated as a percentage of the franchisees’ revenue. We recognize royalty fee revenue at the agreed-upon contractual rates over time as the customer revenue is generated by the franchisees. A receivable is recognized for an estimate of the unreported royalty fees, which are reported and remitted to us in arrears.

Microgrid Systems and Uninterrupted Power Supply Systems Installation

We provide electrical contracting services for energy related products such as the installation of solar solutions, battery storage, distributed generation, and other specialized electric trades.

Costs to Obtain a Contract with a Customer

We capitalize the incremental costs of obtaining a contract with a customer, primarily commissions, as contract assets and recognize the expense on a straight-line basis over a weighted average expected customer relationship period. Capitalized commissions are classified as current or noncurrent based on the timing of when we expect to recognize the expense.

Contract Balances

The timing of revenue recognition, billings, and cash collections results in contract assets and contract liabilities, as further explained below. The timing of revenue recognition may differ from the timing of invoicing to customers. If a contract includes a cancellation clause that allows for the termination of the contract by either party without a substantive penalty, then the contract term is limited to the termination notice period.

Contract assets primarily consist of billed trade receivables, unbilled trade receivables, and costs incurred in excess of amounts billed. Billed and unbilled trade receivables represent amounts from work completed in which we have an unconditional right to bill our customer. Costs incurred in excess of amounts billed typically arise when the revenue recognized on projects exceeds the amount billed to the customer. These amounts are transferred to billed trade receivables when the rights become unconditional. Contract assets also include the capitalization of incremental costs of obtaining a contract with a customer, primarily commissions.

Contract liabilities consist of deferred revenue and advance payments and billings in excess of revenue recognized. We generally classify contract liabilities as current since the related contracts are generally for a period of one year or less. Contract liabilities decrease as we recognize revenue from the satisfaction of the related performance obligation.

Advertising

Advertising costs are expensed as incurred. During 2024, 2023, and 2022, advertising expense was $10.9 million, $8.8 million, and $6.0 million, respectively.

Share-Based Compensation

Our current share-based awards principally consist of restricted stock units (“RSUs”) and performance share awards. We recognize compensation costs associated with these awards in selling, general and administrative expenses. For RSUs and performance share awards, the amount of compensation cost is measured based on the grant-date fair value of the equity instruments issued. Since our total shareholder return (“TSR”) performance share awards are performance awards with a market condition, the compensation costs associated with these awards are determined using a Monte Carlo simulation valuation model. For RSUs and TSR performance share awards, compensation cost is recognized over the period that an employee provides service in exchange for the award. We recognize compensation cost associated with other performance share awards over the requisite service period based on the probability of achievement of performance criteria.

Taxes Collected from Clients and Remitted to Governmental Agencies

We record taxes on client transactions due to governmental agencies as receivables and liabilities on the Consolidated Balance Sheets.

Net Income Per Common Share

Basic net income per common share is net income divided by the weighted-average number of common shares outstanding during the period. Diluted net income per common share is based on the weighted-average number of common shares outstanding during the period, adjusted to include the potential dilution from the conversion of RSUs, vesting of performance shares, and exercisable stock options.

Contingencies and Litigation

We are a party to a number of lawsuits, claims, and proceedings incident to the operation of our business, including those pertaining to labor and employment, contracts, personal injury, and other matters, some of which allege substantial monetary damages. Some of these actions may be brought as class actions on behalf of a class or purported class of employees. We accrue for loss contingencies when losses become probable and are reasonably estimable. If the reasonable estimate of the loss is a range and no amount within the range is a better estimate, then the minimum amount of the range is recorded as a liability. We recognize legal costs as an expense in the period incurred.

Income Taxes

We account for income taxes using the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to temporary differences between the financial statement carrying amount of existing assets and liabilities and their respective tax bases. We measure deferred tax assets and liabilities using enacted tax rates expected to be applied to taxable income in the years in which those temporary differences are expected to be recovered. Deferred tax assets are reviewed for recoverability on a quarterly basis. A valuation allowance is recorded to reduce the carrying amount of a deferred tax asset to its realizable value unless it is more likely than not that such asset will be realized. We recognize accrued interest and penalties related to unrecognized tax benefits in income tax expense in our Consolidated Statements of Comprehensive Income.

Employee Retention Tax Credit

In 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Security Act (the “CARES Act”) to provide certain relief as a result of the COVID-19 Pandemic. The CARES Act provides tax relief, along with other stimulus measures, including a provision for an Employee Retention Credit (“ERC”). ERC is a refundable tax credit for employers who kept employees on their payroll during the COVID-19 Pandemic.

During the year ended October 31, 2023, we received and recorded an employee retention credit totaling $24.0 million, within the “Selling, general and administrative expenses” on our Consolidated Statements of Comprehensive Income.

Recently Adopted Accounting Standards

In September 2022, the Financial Accounting Standards Board (“FASB”) issued ASU 2022-04, Liabilities — Supplier Finance Programs (Subtopic 405-50): Disclosure of Supplier Finance Program Obligations, designed to enhance transparency around supplier finance programs by requiring new disclosures that would allow a user of the financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. This ASU is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years, except for the amendment on rollforward information, which is effective for fiscal years beginning after December 15, 2023, with early adoption permitted. We adopted this standard, effective November 1, 2023, on a prospective basis, except for the rollforward requirement, which becomes effective in fiscal year 2025. We do not participate in any material supplier finance programs and, as such, the adoption of this guidance did not have an impact on our disclosures.

Recently Issued Accounting Standards

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This accounting update improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This ASU requires disclosure, on an annual and interim basis, of significant segment expenses that are regularly provided to the chief operating decision maker, and an amount for other segment items by reportable segment, with a description of its composition. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently evaluating the impact of implementing this guidance on our financial statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosure. This accounting update enhances the transparency and decision usefulness of income tax disclosure. The amendments in this ASU address investor requests for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently evaluating the impact of implementing this guidance on our financial statements.

In November 2024, the FASB issued ASU 2024-03, Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This accounting update improves financial reporting by requiring public business entities to disclose additional information about specific expense categories in the notes to the financial statements at interim and annual reporting periods.This ASU is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. We are currently evaluating the impact of implementing this guidance on our financial statements.

We do not expect any other recently issued accounting pronouncements to have a material impact on our consolidated financial statements and related disclosures.

EMPLOYEE BENEFIT PLANS - Narrative (Details) $ in Millions	12 Months Ended
EMPLOYEE BENEFIT PLANS - Narrative (Details) $ in Millions	Oct. 31, 2024 USD ($) plan	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Expected return on assets	$ 0.0	$ 0.2	$ 0.4
Net periodic benefit cost	0.8	0.6	0.1
Expected future benefit payments	$ 11.2
Number of defined contribution plans \| plan	2
Cost recognized	$ 30.6	29.8	27.7
Defined Contribution Plans
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Cost recognized	54.5	59.2	54.7
Multiemployer Plans, Postretirement Benefit Plans
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Contributions by ABM	434.1	441.8	426.6
Rabbi Trust
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Fair value deferred compensation plan assets	4.4	4.0
Deferred Compensation Plans
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Total liability of deferred compensation	26.7	27.0
Compensation expense	$ 0.6	$ 0.5	$ 0.3

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Oct. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis


		As of October 31,
(in millions)	Fair Value Hierarchy	2024		2023
Cash and cash equivalents(1)	1	$	64.6	$	69.5
Insurance deposits(2)	1	2.3		3.1
Assets held in funded deferred compensation plan(3)	1	4.4		4.0
Credit facility (4)	2	1,335.3		1,313.8
Interest rate swap assets(5)	2	13.5		36.4

Preferred equity investments(6)	3	15.4		15.4
Contingent consideration(7)	3	109.1		13.4

(1) Cash and cash equivalents are stated at nominal value, which equals fair value.

(2) Represents restricted deposits that are used to collateralize our insurance obligations and are stated at nominal value, which equals fair value. These insurance deposits are included in “Other noncurrent assets” on the accompanying Consolidated Balance Sheets. See Note 10, “Insurance,” for further information.

(3) Represents investments held in Rabbi trusts associated with one of our deferred compensation plans, which we include in “Other noncurrent assets” on the accompanying Consolidated Balance Sheets. The fair value of the assets held in the funded deferred compensation plan is based on quoted market prices. See Note 12, “Employee Benefit Plans,” for further information.

(4) Represents gross outstanding borrowings under our Amended Credit Facility. Due to variable interest rates, the carrying value of outstanding borrowings under our line of credit and term loan approximates the fair value. See Note 11, “Credit Facility,” for further information.

(5) Represents interest rate swap derivatives designated as cash flow hedges. The fair values of the interest rate swaps are estimated based on the present value of the difference between expected cash flows calculated at the contracted interest rates and the expected cash flows at current market interest rates using observable benchmarks for the Secured Overnight Financing Rate (“SOFR”) forward rates at the end of the period. At October 31, 2024 and 2023, our interest rate swap assets are included in “Other noncurrent assets” on the accompanying Consolidated Balance Sheets. See Note 11, “Credit Facility,” for further information.

(6 Our investments do not have a readily determinable fair value; therefore, we account for the investments using the measurement alternative under Topic 321 and measure the investments at initial cost plus or minus fair value adjustments if there are observable prices minus impairment, if any.

(7) At October 31, 2024, our contingent consideration payable related to the RavenVolt Acquisition is recorded at fair value as a liability on the acquisition date and is remeasured at each reporting date, based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. After the acquisition date and until the contingency is resolved, the fair value of contingent consideration payable is adjusted each reporting period based primarily on the expected probability of achievement of the contingency targets which are subject to our estimate. These changes in fair value are recognized within “Selling, general and administrative expenses” of the Consolidated Statements of Comprehensive Income. See Note 3, “Acquisitions,” for further information.

REVENUES

12 Months Ended

Oct. 31, 2024

Revenue from Contract with Customer [Abstract]

REVENUES

Disaggregation of Revenues

We generate revenues under several types of contracts, which are further described in Note 2, “Basis of Presentation and Significant Accounting Policies.” Generally, the type of contract is determined by the nature of the services provided by each of our major service lines throughout our reportable segments; therefore, we disaggregate revenues from contracts with customers into major service lines. We have determined that disaggregating revenues into these categories best depicts how the nature, amount, timing, and uncertainty of revenues and cash flows are affected by economic factors. Our reportable segments are B&I, M&D, Education, Aviation, and Technical Solutions, as described in Note 17, “Segment and Geographic Information.”


	Year Ended October 31, 2024
(in millions)	B&I		M&D		Education		Aviation		Technical Solutions		Total
Major Service Line
Janitorial(1)	$	2,781.4	$	1,347.0	$	798.7	$	189.0	$	—	$	5,116.1
Parking(2)	418.9		51.2		0.4		334.5		—		804.9
Facility Services(3)	858.9		156.1		105.0		47.3		—		1,167.2
Building & Energy Solutions(4)	—		—		—		—		809.3		809.3
Airline Services(5)	—		—		—		461.8		—		461.8
Total	$	4,059.1	$	1,554.3	$	904.0	$	1,032.6	$	809.3	$	8,359.4


	Year Ended October 31, 2023
(in millions)	B&I		M&D		Education		Aviation		Technical Solutions		Total
Major Service Line
Janitorial(1)	$	2,745.2	$	1,330.8	$	774.8	$	146.9	$	—	$	4,997.7
Parking(2)	408.2		42.5		0.8		329.3		—		780.8
Facility Services(3)	936.0		153.4		104.8		32.0		—		1,226.2
Building & Energy Solutions(4)	—		—		—		—		674.2		674.2
Airline Services(5)	—		—		—		417.5		—		417.5
Total	$	4,089.4	$	1,526.7	$	880.4	$	925.7	$	674.2	$	8,096.4

(1) Janitorial arrangements provide a wide range of essential cleaning services for commercial office buildings, airports and other transportation centers, educational institutions, government buildings, health facilities, industrial buildings, retail stores, and stadiums and arenas. These arrangements are often structured as monthly fixed-price, square-foot, cost-plus, and work order contracts.

(2) Parking arrangements provide parking and transportation services for clients at various locations, including airports and other transportation centers, commercial office buildings, educational institutions, health facilities, hotels, and stadiums and arenas. These arrangements are structured as management reimbursement, leased location, and allowance contracts. Certain of these arrangements are considered service concession agreements and are accounted for under the guidance of Topic 853; accordingly, rent expense related to these arrangements is recorded as a reduction of the related parking service revenues.

(3) Facility Services arrangements provide onsite mechanical engineering and technical services and solutions relating to a broad range of facilities and infrastructure systems that are designed to extend the useful life of facility fixed assets, improve equipment operating efficiencies, reduce energy consumption, lower overall operational costs for clients, and enhance the sustainability of client locations. These arrangements are generally structured as monthly fixed-price, cost-plus, and work order contracts.

(4) Building & Energy Solutions arrangements provide custom energy solutions, including microgrid systems installation, electrical, HVAC, lighting, electric vehicle charging station installation, uninterrupted power supply services, and other general maintenance and repair services for clients in the public and private sectors and are generally structured as Energy Savings, Fixed-Price Repair, and Refurbishment contracts. We also franchise certain operations under franchise agreements relating to our Linc Network and TEGG brands pursuant to franchise contracts.

(5) Airline Services arrangements support airlines and airports with services such as passenger assistance, catering logistics, and airplane cabin maintenance. These arrangements are often structured as monthly fixed-price, cost-plus, transaction price, and hourly contracts.

Remaining Performance Obligations

At October 31, 2024, performance obligations that were unsatisfied or partially unsatisfied for which we expect to recognize revenue totaled $258.7 million. We expect to recognize revenue on approximately 71% of the remaining performance obligations over the next 12 months, with the remainder recognized thereafter, based on our estimates of project timing.

These amounts exclude variable consideration primarily related to: (i) contracts where we have determined that the contract consists of a series of distinct service periods and revenues are based on future performance that cannot be estimated at contract inception; (ii) parking contracts where we and the customer share the gross revenues or operating profit for the location; and (iii) contracts where transaction prices include performance incentives that are based on future performance and therefore cannot be estimated at contract inception. We apply the practical expedient that permits exclusion of information about the remaining performance obligations with original expected durations of one year or less.

Contract Balances

The following tables present the balances in our contract assets and contract liabilities:


	As of October 31,
(in millions)	2024		2023
Contract assets
Billed trade receivables(1)	$	1,282.9	$	1,219.6
Unbilled trade receivables(1)	124.0		170.4
Costs incurred in excess of amounts billed(2)	162.1		139.2
Capitalized commissions(3)	30.8		30.2

(1) Included in “Trade accounts receivable, net” on the Consolidated Balance Sheets. The fluctuations correlate directly to the execution of new customer contracts and to invoicing and collections from customers in the normal course of business.

(2) Fluctuation is primarily due to the timing of payments on our contracts measured using the cost-to-cost method of revenue recognition.

(3) Included in “Other current assets” and “Other noncurrent assets” on the Consolidated Balance Sheets. During the year ended October 31, 2024, we capitalized $16.1 million of new costs and amortized $15.5 million of previously capitalized costs. There was no impairment loss recorded on the costs capitalized.


(in millions)	Year Ended October 31, 2024
Contract liabilities(1)
Balance at beginning of year	$	141.2
Acquisition additions (2)	3.9
Additional contract liabilities	256.7
Recognition of deferred revenue	(283.7)
Balance at end of year	$	118.2

(1) Included in other accrued liabilities on the Consolidated Balance Sheets.

(2) Represents additions associated with the Quality Uptime Acquisition.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Oct. 31, 2024

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, Plant and Equipment


	As of October 31,
(in millions)	2024		2023
Machinery and other equipment	$	172.9	$	170.7
Computer equipment and software	117.2		110.7
Transportation equipment	95.9		79.0
Leasehold improvements	85.5		69.3
Furniture and fixtures	22.1		19.8
Buildings	7.7		7.7
Land	0.7		0.8
	502.0		458.0
Less: Accumulated depreciation(1)	351.3		326.5
Total	$	150.7	$	131.5

(1) For 2024, 2023, and 2022, depreciation expense was $50.5 million, $44.2 million, and $40.3 million, respectively.

LEASES - Schedule of Weighted Average Remaining Lease Term and Discount Rate (Details)	Oct. 31, 2024	Oct. 31, 2023
Weighted-average remaining lease term (years)
Operating leases	5 years 6 months	5 years 6 months
Finance leases	5 years 3 months 18 days	5 years 2 months 12 days
Weighted-average discount rate
Operating leases	5.05%	4.60%
Finance leases	5.88%	5.28%

INSURANCE (Tables)

12 Months Ended

Oct. 31, 2024

Insurance [Abstract]

Schedule of Insurance Related Balances and Activity

Insurance-Related Balances and Activity


	As of October 31,
(in millions)	2024		2023
Insurance claim reserves, excluding medical and dental	$	608.4	$	555.0
Medical and dental claim reserves and other	11.0		9.5
Insurance recoverables	91.0		67.1

Schedule of Casualty Program Insurance Reserves Rollforward

Casualty Program Insurance Reserves Rollforward


	Years Ended October 31,
(in millions)	2024		2023		2022
Net balance at beginning of year	$	487.9	$	479.9	$	508.3
Change in case reserves plus IBNR Claims — current year	166.2		154.2		145.7
Change in case reserves plus IBNR Claims — prior years	20.3		(14.8)		(36.8)
Claims paid	(157.3)		(131.4)		(129.1)
Acquisition	—		—		(8.2)
Net balance, October 31(1)	517.3		487.9		479.9
Recoverables	91.0		67.1		71.0
Gross balance, October 31	$	608.4	$	555.0	$	551.0

(1) Includes reserves related to discontinued operations of approximately $0.7 million for 2024, $0.1 million for 2023, and $0.2 million for 2022.

Schedule of Instruments Used to Collateralize Insurance Obligations

Instruments Used to Collateralize Our Insurance Obligations


	As of October 31,
(in millions)	2024		2023
Standby letters of credit	$	53.1	$	53.5
Surety bonds and surety-backed letters of credit	175.3		178.0
Restricted insurance deposits	2.3		3.1
Total	$	230.7	$	234.7

SHARE-BASED COMPENSATION PLANS - Schedule of RSU and Performance Share Activity (Details) - $ / shares shares in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
RSUs
Number of Shares
Beginning balance (in shares)	1.0
Granted (in shares)	0.8
Vested (in shares)	(0.4)
Forfeited (in shares)	(0.1)
Ending balance (in shares)	1.2	1.0
Weighted-Average Grant Date Fair Value per Share
Beginning balance (in USD per share)	$ 41.09
Granted (in USD per share)	41.32	$ 44.37	$ 41.63
Vested (in USD per share)	42.09
Forfeited (in USD per share)	42.40
Ending balance (in USD per share)	$ 40.82	$ 41.09
Shares withheld for income taxes (in shares)	0.1
Performance shares
Number of Shares
Beginning balance (in shares)	0.9
Granted (in shares)	0.4
Vested (in shares)	(0.3)
Performance adjustments (in shares)	(0.1)
Forfeited (in shares)	(0.1)
Ending balance (in shares)	0.9	0.9
Weighted-Average Grant Date Fair Value per Share
Beginning balance (in USD per share)	$ 44.43
Granted (in USD per share)	41.62	$ 46.47	$ 43.06
Vested (in USD per share)	40.35
Performance adjustments (in USD per share)	48.36
Forfeited (in USD per share)	44.20
Ending balance (in USD per share)	$ 44.06	$ 44.43
Shares withheld for income taxes (in shares)	0.1

LEASES - Maturities of Operating and Finance Lease Liabilities (Details) $ in Millions	Oct. 31, 2024 USD ($)
Operating Lease Liabilities
Fiscal 2025	$ 31.9
Fiscal 2026	29.7
Fiscal 2027	22.8
Fiscal 2028	16.2
Fiscal 2029	11.6
Thereafter	25.1
Total lease payments	137.2
Less: imputed interest	18.5
Present value of lease liabilities	118.7
Finance Lease Liabilities
Fiscal 2025	5.5
Fiscal 2026	4.7
Fiscal 2027	3.1
Fiscal 2028	3.1
Fiscal 2029	3.1
Thereafter	3.1
Total lease payments	22.8
Less: imputed interest	3.3
Present value of lease liabilities	19.5
Total
Fiscal 2025	37.4
Fiscal 2026	34.4
Fiscal 2027	25.9
Fiscal 2028	19.4
Fiscal 2029	14.7
Thereafter	28.2
Total lease payments	160.0
Less: imputed interest	21.9
Present value of lease liabilities	$ 138.1

ACQUISITIONS	12 Months Ended
ACQUISITIONS	Oct. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
ACQUISITIONS	ACQUISITIONS Acquisition of Quality Uptime Effective June 21, 2024, we acquired Quality Uptime Services, Inc. (“Quality Uptime”), an uninterrupted power supply system (“UPS”) installation and maintenance company providing customized preventive and emergency service programs for mission-critical data centers and other facilities, for a net cash purchase price of approximately $118.2 million (subject to customary working capital adjustments). The acquisition was accounted for under the acquisition method. Accordingly, the assets acquired and liabilities assumed were recognized on the date of acquisition at their estimated fair values, with the excess of the purchase price recorded as goodwill. The goodwill is amortizable over 15 years for income tax purposes. As of October 31, 2024, we recorded preliminary goodwill and intangibles of $80.6 million and $35.2 million, respectively. The total assets acquired, excluding goodwill and intangibles, and liabilities assumed amounted to $24.0 million and $21.6 million, respectively. The acquisition accounting is subject to change as we obtain additional information about the facts and circumstances that existed as of the acquisition date during the measurement period, not to exceed one year from the acquisition date. The final acquisition accounting may include changes to non-current assets, including intangible assets and working capital. The Consolidated Statements of Comprehensive Income for the year ended October 31, 2024, include revenues attributable to Quality Uptime of $26.3 million. The operations of Quality Uptime are included in our Technical Solutions segment. Acquisition of RavenVolt On September 1, 2022, we completed the acquisition of all of the equity interests of RavenVolt, Inc. (“RavenVolt”), a nationwide provider of advanced turn-key microgrid systems utilized by diversified commercial and industrial customers, national retailers, utilities, and municipalities. RavenVolt’s operations are included within our Technical Solutions segment. The transaction met the definition of a business combination. We applied the acquisition method of accounting. The purchase price for the acquisition was approximately $170.0 million in cash at closing (subject to customary working capital and net debt adjustments) plus the potential of post-closing contingent consideration of up to $280.0 million. The post closing contingent consideration would be payable in cash in calendar years 2024, 2025, and 2026 if RavenVolt’s earnings before interest, taxes, depreciation, and amortization (“EBITDA”), as defined in the RavenVolt merger agreement, meets or exceeds certain defined targets. The defined EBITDA targets for calendar year 2023 were not achieved, and as a result, no contingent consideration payment was made in 2024. The maximum remaining contingent consideration that is payable in calendar years 2025 and 2026 is $75.0 million, and $130.0 million, respectively. If the EBITDA achieved for calendar years 2023 - 2025 cumulatively meets the defined EBITDA targets, the entire $280.0 million would be paid in calendar year 2026, minus any earn-out payments made in 2024 and 2025. To estimate the fair value of the contingent consideration on the date of acquisition, we used the Real Options method. The key assumptions used in our valuation were: i) forecast of revenues and EBITDA margins; ii) the volatility associated with the EBITDA; iii) risk-adjusted discount rate applied to forecasted EBITDA; and (iv) the credit-adjusted discount rate related to the payment of the contingent consideration. A simulation of one million scenarios was performed with the assistance of a third-party valuation specialist, resulting in a fair value for the cumulative contingent consideration for calendar years 2023 through 2025 totaling $59.0 million. At October 31, 2023, the estimate of the fair value of the contingent consideration was $13.4 million. Changes in results of operations and management’s forecasts during 2024 for calendar years 2024 and 2025 were primarily due to the timing of large microgrid systems’ and generators’ installation project performing better than anticipated, resulting in a total increase of fair value to $109.1 million at October 31, 2024, of which $75.0 million relates to the calendar year 2024 payment to be made in 2025. Given the relatively short period of time until the end of the earn-out period, there is a high level of confidence in the projections for calendar year 2024 that are the basis for the estimated contingent consideration payment. This change in the fair value is recognized within the “Selling, general and administrative expenses” of the Consolidated Statements of Comprehensive Income.

SHARE-BASED COMPENSATION PLANS

12 Months Ended

Oct. 31, 2024

Share-Based Payment Arrangement [Abstract]

SHARE-BASED COMPENSATION PLANS

We use various share-based compensation plans to provide incentives for our key employees and non-employee members of our Board of Directors. Currently, these incentives primarily consist of RSUs and performance shares.

On May 2, 2006, our stockholders approved the 2006 Equity Incentive Plan, which was last amended and restated on March 7, 2018 (as amended and restated, the “2006 Equity Plan”). The 2006 Equity Plan is an omnibus plan that provides for a variety of equity and equity-based award vehicles, including stock options, stock appreciation rights, RSUs, performance shares, and other share-based awards. Shares subject to awards that terminate without vesting or exercise are available for future awards under the 2006 Equity Plan. Certain of the awards under the 2006 Equity Plan may qualify as “performance-based” compensation under the IRC.

On March 24, 2021, our stockholders approved the 2021 Equity and Incentive Compensation Plan (the “2021 Equity Plan”). The 2021 Equity Plan is an omnibus plan that provides for a variety of equity and equity-based award vehicles, including stock options, stock appreciation rights, RSUs, performance shares, and other share-based awards. Shares subject to awards that terminate without vesting or exercise are available for future awards under the 2021 Equity Plan. Certain of the awards under the 2021 Equity Plan may qualify as “performance-based” compensation under the IRC.

No further shares are authorized for issuance under the 2006 Equity Plan. There are 3,975,000 total shares of common stock authorized for issuance under the 2021 Equity Plan, and at October 31, 2024, there were 1,308,462 shares of common stock available for grant for future equity-based compensation awards. In addition,

there are certain plans under which we can no longer issue awards, such as the 2006 Equity Plan, although awards outstanding under such plans may still vest and be exercised.

We also maintain an employee stock purchase plan, which our stockholders approved on March 9, 2004 (the “2004 Employee Stock Purchase Plan”). As amended, there are 4,000,000 total shares of common stock authorized for issuance under the 2004 Employee Stock Purchase Plan. Effective May 1, 2006, the 2004 Employee Stock Purchase Plan is no longer considered compensatory and the values of the awards are no longer treated as share-based compensation expense. Additionally, as of that date, the purchase price became 95% of the fair value of our common stock price on the last trading day of the month. Employees may designate up to 10% of their compensation for the purchase of stock, subject to a $25,000 annual limit. Employees are required to hold their shares for a minimum of six months from the date of purchase. At October 31, 2024, there were 274,465 remaining unissued shares under the 2004 Employee Stock Purchase Plan.

Compensation Expense by Type of Award and Related Income Tax Benefit


	Years Ended October 31,
(in millions)	2024		2023		2022
RSUs	$	19.9	$	17.7	$	18.5
Performance shares	10.1		12.7		12.0

Share-based compensation expense before income taxes	30.0		30.5		30.5
Income tax benefit	(8.4)		(8.6)		(8.6)
Share-based compensation expense, net of taxes	$	21.6	$	21.8	$	21.9

RSUs and Dividend Equivalent Rights

We award RSUs to eligible employees and non-employee members of our Board of Directors (each, a “Grantee”) that entitle the Grantee to receive shares of our common stock as the units vest. RSUs granted to eligible employees after 2020 generally vest ratably over three years. RSUs granted to eligible employees prior to 2020 generally vest with respect to 50% of the underlying award on the second and fourth anniversary of the award. Upon the retirement of certain executive employees at age 60 with a minimum of 10 years of service to the Company, pursuant to the terms of their respective employment agreements, RSUs granted to such executive employees that were granted at least one year prior to termination by reason of retirement will continue to be eligible for vesting, exercise, and settlement, as applicable, on the originally scheduled vesting date. RSUs granted to non-employee directors vest on the first anniversary date of the grant date. In general, the receipt of RSUs is subject to the grantee’s continuing employment or service as a non-employee director.

RSUs are credited with dividend equivalent rights that are converted to RSUs at the fair market value of our common stock on the dates the dividend payments are made and are subject to the same terms and conditions as the underlying award.

RSU Activity


	Number of Shares (in millions)	Weighted-Average Grant Date Fair Value per Share
Outstanding at October 31, 2023	1.0	$	41.09
Granted	0.8	41.32
Vested (including 0.1 shares withheld for income taxes)	(0.4)	42.09

Forfeited	(0.1)	42.40
Outstanding at October 31, 2024	1.2	$	40.82

At October 31, 2024, total unrecognized compensation cost, net of estimated forfeitures, related to RSUs was $25.7 million, which is expected to be recognized ratably over a weighted-average vesting period of 1.9 years. In 2024, 2023, and 2022, the weighted-average grant date fair value per share of awards granted was $41.32, $44.37, and $41.63, respectively. In 2024, 2023, and 2022, the total grant date fair value of RSUs vested and converted to shares of ABM common stock was $15.7 million, $17.1 million, and $16.4 million, respectively.

Performance Shares, Including TSR Performance Shares

Performance shares consist of a contingent right to receive shares of our common stock based on performance targets adopted by our Compensation Committee. Performance shares are credited with dividend equivalent rights that will be converted to performance shares at the fair market value of our common stock beginning after the performance targets have been satisfied and are subject to the same terms and conditions as the underlying award.

For certain performance share awards, the number of performance shares that will vest is based on pre-established internal financial performance targets and typically a three-year service and performance period. The number of TSR-modified awards that will vest over the respective three-year performance period is based on our total shareholder return relative to the S&P 1500 Composite Commercial Services & Supplies Index. Vesting of 0% to 150% of the awards originally granted may occur depending on the respective performance metrics.

Performance Share Activity


	Number of Shares (in millions)	Weighted-Average Grant Date Fair Value per Share
Outstanding at October 31, 2023	0.9	$	44.43
Granted	0.4	41.62
Vested (including 0.1 shares withheld for income taxes)	(0.3)	40.35
Performance adjustments	(0.1)	48.36
Forfeited	(0.1)	44.20
Outstanding at October 31, 2024	0.9	$	44.06

At October 31, 2024, total unrecognized compensation cost related to performance share awards was $17.0 million, which is expected to be recognized ratably over a weighted-average vesting period of 1.9 years. Except for TSR performance shares, these costs are based on estimated achievement of performance targets and estimated costs are periodically reevaluated. For our TSR performance shares, these costs are based on the fair value of awards at the grant date and are recognized on a straight-line basis over the service period of three years.

In 2024, 2023, and 2022, the weighted-average grant date fair value per share of awards granted was $41.62, $46.47, and $43.06, respectively. In 2024, 2023, and 2022, the total grant date fair value of performance shares vested and converted to shares of ABM common stock was $12.3 million, $14.6 million, and $13.6 million, respectively.

In 2024, 2023, and 2022, we used the Monte Carlo simulation valuation technique to estimate the fair value of TSR performance share grants, which used the assumptions in the table below.

Monte Carlo Assumptions


	2024			2023			2022
Expected life(1)	2.81 years			2.81 years			2.81 years
Expected stock price volatility(2)	33.0		%	39.9		%	41.8		%

Risk-free interest rate(3)	4.1		%	4.0		%	1.1		%
Stock price(4)	$	42.13		$	46.19		$	42.88

(1) The expected life represents the remaining performance period of the awards.

(2) The expected volatility for each grant is determined based on the historical volatility of our common stock over a period equal to the remaining term of the performance period from the date of grant for all awards.

(3) The risk-free interest rate is based on the continuous compounded yield on U.S. Treasury Constant Maturity Rates with varying remaining terms; the yield is determined over a time period commensurate with the performance period from the grant date.

(4) The stock price is the closing price of our common stock on the valuation date.

Employee Stock Purchase Plan


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023		2022
Weighted-average fair value of granted purchase rights per share	$	2.31	$	2.23	$	2.19
Common stock issued	0.1		0.1		0.1
Fair value of common stock issued per share	$	43.93	$	42.40	$	41.68
Aggregate purchases	$	3.7	$	3.4	$	3.4

SHARE-BASED COMPENSATION PLANS - Schedule of Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of granted purchase rights per share (in USD per share)	$ 2.31	$ 2.23	$ 2.19
Common stock issued (in shares)	0.1	0.1	0.1
Fair value of common stock issued per share (in USD per share)	$ 43.93	$ 42.40	$ 41.68
Aggregate purchases	$ 3.7	$ 3.4	$ 3.4

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480483/718-10-35-1D

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480483/718-10-35-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

SCHEDULE II - VALULATION AND QUALIFYING ACCOUNTS (Detail) - Accounts receivable allowances - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	$ 25.0	$ 22.6	$ 32.7
Additions from Acquisitions	0.3	0.0	1.4
Charges to Costs and Expenses	88.7	76.0	60.6
Write-offs/Allowance Taken	(91.3)	(73.6)	(72.1)
Balance End of Year	$ 22.8	$ 25.0	$ 22.6

REVENUES - Narrative (Details) $ in Millions	Oct. 31, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Amount of remaining performance obligation	$ 258.7
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Percentage of remaining performance obligation	71.00%
Remaining performance obligation period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation period

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Statement of Financial Position [Abstract]
Allowances on trade accounts receivable	$ 22.8	$ 25.0
Accumulated depreciation on property, plant and equipment	351.3	326.5
Accumulated amortization on other intangible assets	$ 479.3	$ 438.3
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	500,000	500,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	62,196,665	62,847,387
Common stock, shares outstanding (in shares)	62,196,665	62,847,387

THE COMPANY AND NATURE OF OPERATIONS	12 Months Ended
THE COMPANY AND NATURE OF OPERATIONS	Oct. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
THE COMPANY AND NATURE OF OPERATIONS	THE COMPANY AND NATURE OF OPERATIONS ABM is a leading provider of integrated facility services with a mission to make a difference, every person, every day. We are organized into four industry groups and one Technical Solutions segment: Through these groups, we offer janitorial, facilities engineering, parking, and specialized mechanical and electrical technical solutions, on a standalone basis or in combination with other services.

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Oct. 31, 2024	Dec. 18, 2024	Apr. 30, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 31, 2024
Current Fiscal Year End Date	--10-31
Document Transition Report	false
Entity File Number	1-8929
Entity Registrant Name	ABM INDUSTRIES INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-1369354
Entity Address, Address Line One	One Liberty Plaza
Entity Address, Address Line Two	7th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10006
City Area Code	212
Local Phone Number	297-0200
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	ABM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction Flag	false
Entity Shell Company	false
Entity Public Float			$ 2,696,443,170
Entity Common Stock, Shares Outstanding (in shares)		62,203,371
Documents Incorporated by Reference	Certain parts of the registrant’s Definitive Proxy Statement relating to the registrant’s 2025 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0000771497
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false

CREDIT FACILITY - Schedule of Long-Term Loan Maturities (Details) - Term Loan $ in Millions	Oct. 31, 2024 USD ($)
Term Loan Maturities
2025	$ 32.5
2026	1,302.8
2027	0.0
2028	0.0
2029	$ 0.0

GOODWILL AND OTHER INTANGIBLE ASSETS

12 Months Ended

Oct. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill


(in millions)	Business & Industry		Manufacturing & Distribution		Education		Aviation		Technical Solutions		Total
Balance at October 31, 2022	$	1,087.8	$	502.2	$	459.3	$	68.7	$	367.4	$	2,485.6
Acquisitions	1.3		—		—		—		(0.1)		1.1
Foreign currency translation	3.6		—		—		0.3		0.8		4.7

Balance at October 31, 2023	$	1,092.7	$	502.2	$	459.3	$	69.0	$	368.0	$	2,491.3
Acquisitions (1)	—		—		—		—		80.6		80.6
Foreign currency translation	2.6		—		—		0.4		1.1		4.1
Balance at October 31, 2024	$	1,095.5	$	502.2	$	459.3	$	69.4	$	449.6	$	2,575.9

(1) During 2024, goodwill increased primarily as a result of the Quality Uptime Acquisition. See Note 3, “Acquisitions”, for additional information.

We did not record goodwill impairment charges during fiscal years 2024 and 2023.

Other Intangible Assets


	As of October 31,
	2024						2023
(in millions)	Gross Carrying Amount		Accumulated Amortization		Total		Gross Carrying Amount		Accumulated Amortization		Total
Customer contracts and relationships	$	748.2	$	(467.2)	$	281.0	$	714.1	$	(413.2)	$	300.9
Trademarks and trade names	12.7		(11.7)		1.0		12.1		(11.1)		1.0
Contract rights and other	0.7		(0.3)		0.5		15.0		(14.0)		1.1
Total(1)	$	761.7	$	(479.3)	$	282.4	$	741.2	$	(438.3)	$	302.9

(1) These intangible assets are being amortized over the expected period of benefit, with a weighted average life of approximately 11 years.

Estimated Annual Amortization Expense for Each of the Next Five Years


(in millions)	2025		2026		2027		2028		2029
Estimated amortization expense(1)	$	51.7	$	44.8	$	39.0	$	33.8	$	28.5

(1) These amounts could vary as acquisitions of additional intangible assets occur in the future and as acquisition accounting is finalized for existing acquisitions.

The estimates of future cash flows used in determining the fair value of goodwill and other intangible assets involve significant management judgment and are based upon assumptions about expected future operating performance, economic conditions, market conditions, and cost of capital. Inherent in estimating the future cash flows are uncertainties beyond our control, such as changes in capital markets. The actual cash flows could differ materially from management’s estimates due to changes in business conditions, operating performance, and economic conditions.

CREDIT FACILITY - Narrative (Details)			12 Months Ended
CREDIT FACILITY - Narrative (Details)	Nov. 01, 2022	Sep. 01, 2017 USD ($)	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Jun. 28, 2021 USD ($)	Jun. 27, 2021 USD ($)	Sep. 01, 2018 USD ($)	Aug. 31, 2017 USD ($)
Debt Instrument [Line Items]
Deferred financing costs					$ 12,600,000
Interest rate cash flow hedge gain to be reclassified during next 12 months, net			$ 5,900,000
Tax to be reclassified during the next 12 months			2,200,000
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Debt Instrument [Line Items]
Net gain (loss) from cash flow hedges recorded in accumulated other comprehensive loss, net of tax			9,200,000	$ 26,000,000.0
Tax related to amounts in accumulated other comprehensive loss			4,300,000	$ 10,500,000
Line of Credit
Debt Instrument [Line Items]
Deferred financing costs					7,700,000
Term Loan
Debt Instrument [Line Items]
Deferred financing costs					4,900,000
Principal payments			$ 32,500,000
Credit Facility
Debt Instrument [Line Items]
Line of credit facility, term		5 years
Basis spread on variable rate	0.10%
Floor on credit spread adjustment	0
Total net leverage ratio	5.00
Secured net leverage ratio	4.00
Interest coverage ratio	1.50
Deferred financing costs					6,400,000
Credit Facility \| Scenario, Material Acquisition
Debt Instrument [Line Items]
Total net leverage ratio	5.50
Secured net leverage ratio	4.50
Credit Facility \| Standby letters of credit
Debt Instrument [Line Items]
Line of credit, borrowing capacity					350,000,000
Credit Facility \| Swing Line Loan
Debt Instrument [Line Items]
Line of credit, borrowing capacity					75,000,000
Credit Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, borrowing capacity		$ 900,000,000.0			1,300,000,000	$ 800,000,000	$ 800,000,000.0	$ 800,000,000.0
Credit Facility \| Term Loan
Debt Instrument [Line Items]
Debt instrument, face amount		$ 800,000,000.0			650,000,000	$ 620,000,000
Deferred financing costs					$ 6,200,000

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss, Net of Taxes	Retained Earnings
Balance, beginning of year (in shares) at Oct. 31, 2021		67,300,000
Balance, beginning of year at Oct. 31, 2021		$ 0.7	$ 750.9	$ (22.5)	$ 880.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		600,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(8.4)
Share-based compensation expense			30.5
Repurchase of common stock, including excise taxes (in shares)		(2,300,000)
Repurchase of common stock, including excise taxes		$ 0.0	(97.5)
Other comprehensive (loss) income				6.3
Net income	$ 230.4				230.4
Dividends
Common stock ($0.90, $0.88, and $0.78 per share)					(51.9)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2022		65,500,000
Balance, end of year at Oct. 31, 2022	$ 1,717.2	$ 0.7	675.5	(16.2)	1,057.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		600,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(9.0)
Share-based compensation expense			30.5
Repurchase of common stock, including excise taxes (in shares)	(3,340,000)	(3,300,000)
Repurchase of common stock, including excise taxes	$ (137.1)	$ (0.1)	(138.1)
Other comprehensive (loss) income				6.9
Net income	$ 251.3				251.3
Dividends
Common stock ($0.90, $0.88, and $0.78 per share)					(57.5)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2023	62,847,387	62,800,000
Balance, end of year at Oct. 31, 2023	$ 1,799.9	$ 0.6	558.9	(9.2)	1,249.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		500,000
Stock issued (taxes withheld) under employee stock purchase and share-based compensation plans, net (in shares)		$ 0.0	(5.5)
Share-based compensation expense			30.0
Repurchase of common stock, including excise taxes (in shares)	(1,170,000)	(1,200,000)
Repurchase of common stock, including excise taxes	$ (55.8)	$ 0.0	(56.1)
Other comprehensive (loss) income				(9.8)
Net income	$ 81.4				81.4
Dividends
Common stock ($0.90, $0.88, and $0.78 per share)					(56.5)
Stock issued under share-based compensation plans					(1.5)
Balance, end of year (in shares) at Oct. 31, 2024	62,196,665	62,200,000
Balance, end of year at Oct. 31, 2024	$ 1,781.9	$ 0.6	$ 527.4	$ (19.1)	$ 1,272.9

EMPLOYEE BENEFIT PLANS - Schedule of Information for the Plans (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Net obligations	$ 6.9	$ 6.1
Projected benefit obligations	12.5	11.9
Fair value of assets	5.6	5.8
Unfunded Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Projected benefit obligations	$ 12.5	$ 11.9

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details

INSURANCE - Schedule of Instruments Used to Collateralize Insurance Obligations (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Letters Of Credit [Line Items]
Instruments used to collateralize insurance obligations	$ 230.7	$ 234.7
Standby letters of credit
Letters Of Credit [Line Items]
Instruments used to collateralize insurance obligations	53.1	53.5
Surety bonds and surety-backed letters of credit
Letters Of Credit [Line Items]
Instruments used to collateralize insurance obligations	175.3	178.0
Restricted insurance deposits
Letters Of Credit [Line Items]
Instruments used to collateralize insurance obligations	$ 2.3	$ 3.1

PREFERRED AND COMMON STOCK

12 Months Ended

Oct. 31, 2024

Stockholders' Equity Note [Abstract]

PREFERRED AND COMMON STOCK

Preferred Stock

We are authorized to issue 500,000 shares of preferred stock. None of these preferred shares are issued.

Common Stock

Effective December 13, 2023, our Board of Directors expanded our existing share repurchase program by an additional $150.0 million of our common stock. Share repurchases may take place on the open market or otherwise, and all or part of the repurchases may be made pursuant to Rule 10b5-1 plans or in privately negotiated transactions. The timing of repurchases is at our discretion and will depend upon several factors, including market and business conditions, future cash flows, share price, share availability, and other factors. Repurchased shares are retired and returned to an authorized but unissued status. The repurchase program may be suspended or discontinued at any time without prior notice.

Repurchase Activity

We repurchased shares under the share repurchase program during the year ended October 31, 2024, as summarized below. At October 31, 2024, authorization for $154.5 million of repurchases remained under the Share Repurchase Program.


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023
Total number of shares purchased	1.17		3.34
Average price paid per share(1)	$	47.86	$	41.06
Total cash paid for share repurchases(1)	$	55.8	$	137.1

(1) Average price paid per share and total cash paid for share repurchases does not include any excise tax for stock repurchases as part of the Inflation Reduction Act of 2022.

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Oct. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation

Principles of Consolidation

Use of Estimates

Cash and Cash Equivalents

Trade Accounts Receivable and Costs Incurred in Excess of Amounts Billed

Allowance for Doubtful Accounts

Sales Allowance

Other Current Assets

At October 31, 2024 and 2023, other current assets primarily consisted of other receivables, short-term insurance recoverables, and capitalized commissions.

Other Investments

Property, Plant and Equipment


Category			Years
Computer equipment and software			3–7
Machinery and other equipment			3–5
Transportation equipment			1.5–10
Buildings			10–40
Furniture and fixtures			5

Leases

the balance sheet and will expense payments for such leases on a straight-line basis over the lease term. We also elected to not separate lease components from non-lease components.

Goodwill and Other Intangible Assets

less than the carrying amount, then we calculate an impairment loss. The impairment loss calculation compares the fair value, which is based on projected discounted cash flows, to the carrying value.

Other Noncurrent Assets

Federal Energy Savings Performance Contract Receivables and Remaining Performance Obligations

Federal Energy Savings Performance Contract Receivables

Remaining Performance Obligations

Fair Value of Financial Instruments

Level 1 – Quoted prices for identical instruments in active markets;

Level 3 – Significant inputs to the valuation model are unobservable.

Insurance Reserves

We use a combination of insured and self-insurance programs to cover workers’ compensation, general liability, automobile liability, property damage, and other insurable risks. Insurance claim liabilities represent our estimate of retained risks without regard to insurance coverage. We retain a substantial portion of the risk related to certain workers’ compensation and medical claims. Liabilities associated with these losses include estimates of both filed claims and IBNR Claims.

Other Accrued Liabilities

Other Noncurrent Liabilities

Contracts with Customers

Contract Types

We have arrangements under various contract types, as described below.

Monthly Fixed-Price

Square-Foot

Cost-Plus

Work Orders

Transaction-Price

Hourly

revenue is recognized at the agreed-upon contractual amount over time, because the customer simultaneously receives and consumes the benefits of the services as they are performed.

Management Reimbursement

Management reimbursement revenue was $318.2 million, $302.3 million, and $280.6 million during 2024, 2023, and 2022, respectively.

Leased Location

Rental expense and certain other expenses under contracts that meet the definition of service concession arrangements are recorded as a reduction of revenue.

Allowance

Energy Savings Contracts and Fixed-Price Repair and Refurbishment

Franchise

Microgrid Systems and Uninterrupted Power Supply Systems Installation

We provide electrical contracting services for energy related products such as the installation of solar solutions, battery storage, distributed generation, and other specialized electric trades.

Costs to Obtain a Contract with a Customer

Contract Balances

Advertising

Advertising costs are expensed as incurred.

Share-Based Compensation

Taxes Collected from Clients and Remitted to Governmental Agencies

We record taxes on client transactions due to governmental agencies as receivables and liabilities on the Consolidated Balance Sheets.

Net Income Per Common Share

Contingencies and Litigation

Income Taxes

Employee Retention Tax Credit

Recently Adopted and Issued Accounting Standards

Recently Adopted Accounting Standards

Recently Issued Accounting Standards

We do not expect any other recently issued accounting pronouncements to have a material impact on our consolidated financial statements and related disclosures.

INCOME TAXES - Schedule of Changes to the Valuation Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Operating Loss Carryforwards, Valuation Allowance Rollforward [Roll Forward]
Valuation allowance at beginning of year	$ 1.2	$ 1.6	$ 2.2
Other, net	(0.1)	(0.4)	(0.6)
Valuation allowance at end of year	$ 1.1	$ 1.2	$ 1.6

INCOME TAXES - Schedule of Reconciliation of U.S. Statutory Tax Rate to Effective Income Tax Rate (Details)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Tax Disclosure [Abstract]
U.S. statutory rate	21.00%	21.00%	21.00%
State and local income taxes, net of federal tax benefit	8.00%	6.90%	7.70%
Federal and state tax credits	(2.60%)	(1.00%)	(1.50%)
Impact of foreign operations	(6.40%)	0.80%	(0.10%)
Changes in uncertain tax positions	(2.20%)	0.10%	(2.50%)
Incremental tax benefit from share-based compensation awards	(1.60%)	(0.70%)	(0.50%)
Energy efficiency incentives	(4.10%)	(0.10%)	(0.30%)
Nondeductible executive compensation	3.40%	1.40%	1.40%
Nontaxable RavenVolt contingent consideration	20.10%	(3.90%)	0.00%
Other nondeductible expenses	2.10%	0.60%	0.30%
Other, net	1.40%	(1.00%)	0.20%
Effective tax rate	39.10%	24.10%	25.70%

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Statement of Stockholders' Equity [Abstract]
Common stock, dividends (in USD per share)	$ 0.90	$ 0.88	$ 0.78

SHARE-BASED COMPENSATION PLANS - Schedule of Monte Carlo Assumptions (Details) - Performance shares - $ / shares	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	2 years 9 months 21 days	2 years 9 months 21 days	2 years 9 months 21 days
Expected stock price volatility	33.00%	39.90%	41.80%
Risk-free interest rate	4.10%	4.00%	1.10%
Stock price (in USD per share)	$ 42.13	$ 46.19	$ 42.88

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

COMMITMENTS AND CONTINGENCIES	12 Months Ended
COMMITMENTS AND CONTINGENCIES	Oct. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Letters of Credit and Surety Bonds We use letters of credit and surety bonds to secure certain commitments related to insurance programs and for other purposes. As of October 31, 2024, these letters of credit totaled $57.9 million, and surety bonds and surety-backed letters of credit totaled $854.7 million. Guarantees In some instances, we offer clients guaranteed energy savings under certain energy savings contracts. At October 31, 2024 and 2023, total guarantees were $224.2 million and $218.0 million, respectively, and these guarantees extend through 2044 and 2043, respectively. We accrue for the estimated cost of guarantees when it is probable that a liability has been incurred and the amount can be reasonably estimated. Historically, we have not incurred any material losses in connection with these guarantees. Indemnifications We are party to a variety of agreements under which we may be obligated to indemnify the other party for certain matters. These agreements are primarily standard indemnification arrangements entered into in our ordinary course of business. Pursuant to these arrangements, we may agree to indemnify, hold harmless, and reimburse the indemnified parties for losses suffered or incurred by the indemnified party, generally our clients, in connection with any claims arising out of the services that we provide. We also incur costs to defend lawsuits or settle claims related to these indemnification arrangements, and in most cases these costs are paid from our insurance program. Although we attempt to place limits on such indemnification arrangements related to the size of the contract, the maximum obligation may not be explicitly stated and, as a result, we are unable to determine the maximum potential amount of future payments we could be required to make under these arrangements. Our certificate of incorporation and bylaws may require us to indemnify our directors and officers for certain liabilities that were incurred as a result of their status or service to ABM as a director or officer. The amount of these obligations cannot be reasonably estimated. Unclaimed Property Audits We routinely remit escheat payments to states in compliance with applicable escheat laws, and we are subject to unclaimed property audits by states in the ordinary course of business. The property subject to review in the audit process may include unclaimed wages, vendor payments, or customer refunds. State escheat laws generally require entities to report and remit abandoned or unclaimed property to the state, and failure to do so can result in assessments that could include interest and penalties in addition to the payment of the escheat liability. Legal Matters We are a party to a number of lawsuits, claims, and proceedings incident to the operation of our business, including those pertaining to labor and employment, contracts, personal injury, and other matters, some of which allege substantial monetary damages. Some of these actions may be brought as class actions on behalf of a class or purported class of employees. At October 31, 2024, the total amount accrued for probable litigation losses where a reasonable estimate of the loss could be made was $12.2 million. We do not accrue for contingent losses that, in our judgment, are considered to be reasonably possible but not probable. The estimation of reasonably possible losses also requires the analysis of multiple possible outcomes that often depend on judgments about potential actions by third parties. Our management currently estimates the range of loss for all reasonably possible losses for which a reasonable estimate of the loss can be made is between zero and $13.1 million. Factors underlying this estimated range of loss may change from time to time, and actual results may vary significantly from this estimate. Litigation outcomes are difficult to predict and the estimation of probable losses requires the analysis of multiple possible outcomes that often depend on judgments about potential actions by third parties. If one or more matters are resolved in a particular period in an amount in excess of, or in a manner different than, what we anticipated, this could have a material adverse effect on our financial position, results of operations, or cash flows. In some cases, although a loss is probable or reasonably possible, we cannot reasonably estimate the maximum potential losses for probable matters or the range of losses for reasonably possible matters. Therefore, our accrual for probable losses and our estimated range of loss for reasonably possible losses do not represent our maximum possible exposure.

FAIR VALUE OF FINANCIAL INSTRUMENTS

12 Months Ended

Oct. 31, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE OF FINANCIAL INSTRUMENTS

Fair Value Hierarchy of Our Financial Instruments

Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis


		As of October 31,
(in millions)	Fair Value Hierarchy	2024		2023
Cash and cash equivalents(1)	1	$	64.6	$	69.5
Insurance deposits(2)	1	2.3		3.1
Assets held in funded deferred compensation plan(3)	1	4.4		4.0
Credit facility (4)	2	1,335.3		1,313.8
Interest rate swap assets(5)	2	13.5		36.4

Preferred equity investments(6)	3	15.4		15.4
Contingent consideration(7)	3	109.1		13.4

(1) Cash and cash equivalents are stated at nominal value, which equals fair value.

There were no transfers to or from Level 3 financial assets or liabilities during 2024 and 2023. At October 31, 2024 and 2023, the Company had no financial assets recorded at fair value using Level 3 inputs.

Non-Financial Assets Measured at Fair Value on a Non-Recurring Basis

In addition to assets and liabilities that are measured at fair value on a recurring basis, we are also required to measure certain items at fair value on a non-recurring basis. These assets can include: goodwill; intangible assets; property, plant and equipment; lease-related ROU assets; and long-lived assets that have been reduced to fair value when they are held for sale. If certain triggering events occur or if an annual impairment test is required, we would evaluate these non-financial assets for impairment. If an impairment were to occur, the asset would be recorded at the estimated fair value, using primarily unobservable Level 3 inputs.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 820
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478119/940-820-50-1

+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Oct. 31, 2024

Accounting Policies [Abstract]

Schedule of Estimated Useful Lives of Property, Plant and Equipment

We determine depreciation for financial reporting purposes using the straight-line method over the following estimated useful lives:


Category			Years
Computer equipment and software			3–7
Machinery and other equipment			3–5
Transportation equipment			1.5–10
Buildings			10–40
Furniture and fixtures			5

REVENUES - Schedule of Disaggregation of Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenue from External Customer [Line Items]
Revenues	$ 8,359.4	$ 8,096.4	$ 7,806.6
Business & Industry
Revenue from External Customer [Line Items]
Revenues	4,059.1	4,089.4	4,095.9
M&D
Revenue from External Customer [Line Items]
Revenues	1,554.3	1,526.7	1,445.2
Education
Revenue from External Customer [Line Items]
Revenues	904.0	880.4	834.7
Aviation
Revenue from External Customer [Line Items]
Revenues	1,032.6	925.7	804.0
Technical Solutions
Revenue from External Customer [Line Items]
Revenues	809.3	674.2	$ 626.8
Janitorial
Revenue from External Customer [Line Items]
Revenues	5,116.1	4,997.7
Janitorial \| Business & Industry
Revenue from External Customer [Line Items]
Revenues	2,781.4	2,745.2
Janitorial \| M&D
Revenue from External Customer [Line Items]
Revenues	1,347.0	1,330.8
Janitorial \| Education
Revenue from External Customer [Line Items]
Revenues	798.7	774.8
Janitorial \| Aviation
Revenue from External Customer [Line Items]
Revenues	189.0	146.9
Janitorial \| Technical Solutions
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Parking
Revenue from External Customer [Line Items]
Revenues	804.9	780.8
Parking \| Business & Industry
Revenue from External Customer [Line Items]
Revenues	418.9	408.2
Parking \| M&D
Revenue from External Customer [Line Items]
Revenues	51.2	42.5
Parking \| Education
Revenue from External Customer [Line Items]
Revenues	0.4	0.8
Parking \| Aviation
Revenue from External Customer [Line Items]
Revenues	334.5	329.3
Parking \| Technical Solutions
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Facility Services
Revenue from External Customer [Line Items]
Revenues	1,167.2	1,226.2
Facility Services \| Business & Industry
Revenue from External Customer [Line Items]
Revenues	858.9	936.0
Facility Services \| M&D
Revenue from External Customer [Line Items]
Revenues	156.1	153.4
Facility Services \| Education
Revenue from External Customer [Line Items]
Revenues	105.0	104.8
Facility Services \| Aviation
Revenue from External Customer [Line Items]
Revenues	47.3	32.0
Facility Services \| Technical Solutions
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Building & Energy Solutions
Revenue from External Customer [Line Items]
Revenues	809.3	674.2
Building & Energy Solutions \| Business & Industry
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Building & Energy Solutions \| M&D
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Building & Energy Solutions \| Education
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Building & Energy Solutions \| Aviation
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Building & Energy Solutions \| Technical Solutions
Revenue from External Customer [Line Items]
Revenues	809.3	674.2
Airline Services
Revenue from External Customer [Line Items]
Revenues	461.8	417.5
Airline Services \| Business & Industry
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Airline Services \| M&D
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Airline Services \| Education
Revenue from External Customer [Line Items]
Revenues	0.0	0.0
Airline Services \| Aviation
Revenue from External Customer [Line Items]
Revenues	461.8	417.5
Airline Services \| Technical Solutions
Revenue from External Customer [Line Items]
Revenues	$ 0.0	$ 0.0

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Current assets
Cash and cash equivalents	$ 64.6	$ 69.5
Trade accounts receivable, net of allowances of $22.8 and $25.0 at October 31, 2024 and 2023, respectively	1,384.1	1,365.0
Costs incurred in excess of amounts billed	162.1	139.2
Prepaid expenses	103.2	78.5
Other current assets	74.8	58.6
Total current assets	1,788.7	1,710.7
Other investments	30.8	28.8
Property, plant and equipment, net of accumulated depreciation of $351.3 and $326.5 at October 31, 2024 and 2023, respectively	150.7	131.5
Right-of-use assets	101.2	113.4
Other intangible assets, net of accumulated amortization of $479.3 and $438.3 at October 31, 2024 and 2023, respectively	282.4	302.9
Goodwill	2,575.9	2,491.3
Other noncurrent assets	167.5	155.0
Total assets	5,097.2	4,933.7
Current liabilities
Current portion of debt, net	31.6	31.5
Trade accounts payable	324.3	299.1
Accrued compensation	295.6	249.7
Accrued taxes—other than income	56.2	58.9
Deferred revenue	63.7	90.1
Insurance claims	197.5	177.0
Income taxes payable	4.8	17.9
Current portion of lease liabilities	26.6	32.5
Other accrued liabilities	348.2	261.2
Total current liabilities	1,348.4	1,217.9
Long-term debt, net	1,302.2	1,279.8
Long-term lease liabilities	92.0	98.8
Deferred income tax liability, net	60.2	85.0
Noncurrent insurance claims	421.8	387.5
Other noncurrent liabilities	86.8	61.1
Noncurrent income taxes payable	3.8	3.7
Total liabilities	3,315.2	3,133.8
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $0.01 par value; 500,000 shares authorized; none issued	0.0	0.0
Common stock, $0.01 par value; 100,000,000 shares authorized; 62,196,665 and 62,847,387 shares issued and outstanding at October 31, 2024 and 2023, respectively	0.6	0.6
Additional paid-in capital	527.4	558.9
Accumulated other comprehensive loss, net of taxes	(19.1)	(9.2)
Retained earnings	1,272.9	1,249.6
Total stockholders’ equity	1,781.9	1,799.9
Total liabilities and stockholders’ equity	$ 5,097.2	$ 4,933.7

EMPLOYEE BENEFIT PLANS - Schedule of Multiemployer Defined Benefit Pension Plans (Details) - Multiemployer Plans, Pension Plans - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Multiemployer Plans [Line Items]
Total Contributions	$ 77.3	$ 73.6	$ 73.8
Building Service 32BJ Pension Fund
Multiemployer Plans [Line Items]
Contributions by ABM, significant	22.1	21.4	22.7
S.E.I.U National Industry Pension Fund
Multiemployer Plans [Line Items]
Contributions by ABM, significant	19.4	19.3	17.6
Central Pension Fund of the IUOE & Participating Employers
Multiemployer Plans [Line Items]
Contributions by ABM, significant	12.4	13.0	12.8
SEIU Local 1 & Participating Employers Pension Trust
Multiemployer Plans [Line Items]
Contributions by ABM, significant	4.3	4.8	5.8
Western Conference of Teamsters Pension Plan
Multiemployer Plans [Line Items]
Contributions by ABM, significant	2.7	2.4	2.2
IUOE Stationary Engineers Local 39 Pension Plan
Multiemployer Plans [Line Items]
Contributions by ABM, significant	2.5	4.6	4.4
All Other Plans
Multiemployer Plans [Line Items]
Contributions by ABM, insignificant	$ 13.9	$ 8.0	$ 8.2

CREDIT FACILITY - Schedule of Components of Debt (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Current portion of long-term debt
Gross term loan	$ 32.5	$ 32.5
Unamortized deferred financing costs	(0.9)	(1.0)
Current portion of term loan	31.6	31.5
Long-term debt
Gross term loan	503.8	536.3
Unamortized deferred financing costs	(0.6)	(1.5)
Total noncurrent portion of term loan	503.2	534.8
Revolving line of credit	799.0	745.0
Long-term debt	1,302.2	$ 1,279.8
Borrowing capacity	423.6
Standby letters of credit	$ 57.9
Credit Facility
Long-term debt
Weighted average interest rate	6.68%	7.17%

Audit Information	12 Months Ended
Audit Information	Oct. 31, 2024
Auditor Information [Abstract]
Auditor Name	KPMG LLP
Auditor Location	New York, New York
Auditor Firm ID	185

PREFERRED AND COMMON STOCK - Schedule of Repurchase Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Stockholders' Equity Note [Abstract]
Total number of shares purchased (in shares)	1,170	3,340
Average price paid per share (in USD per share)	$ 47.86	$ 41.06
Total cash paid for share repurchases	$ 55.8	$ 137.1

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

INSURANCE

12 Months Ended

Oct. 31, 2024

Insurance [Abstract]

INSURANCE

We use a combination of insured and self-insurance programs to cover workers’ compensation, general liability, automobile liability, property damage, and other insurable risks. For the majority of these insurance programs, we retain the initial $1.0 million to $1.5 million of exposure on a per-occurrence basis, either through deductibles or self-insured retentions. Beginning November 1, 2023, retentions range between $1.0 million and $5.0 million of exposure on a per-occurrence basis. Beyond the retained exposures, we have varying primary policy limits ranging between $1.0 million and $5.0 million per occurrence. To cover general liability and automobile liability losses above these primary limits, we maintain commercial umbrella insurance policies that provide aggregate limits of $200.0 million. Our insurance policies generally cover workers’ compensation losses to the full extent of statutory requirements. Additionally, to cover property damage risks above our retained limits, we maintain policies that provide per occurrence limits of $75.0 million. We are also self-insured for certain employee medical and dental plans. We maintain stop-loss insurance for our self-insured medical plan under which we retain up to $0.5 million of exposure on a per-participant, per-year basis with respect to claims.

We maintain our reserves for workers’ compensation, general liability, automobile liability, and property damage insurance claims based upon known trends and events and the actuarial estimates of required reserves considering the most recently completed actuarial reports. We use all available information to develop our best estimate of insurance claims reserves as information is obtained. The results of actuarial reviews are used to estimate our insurance rates and insurance reserves for future periods and to adjust reserves, if appropriate, for prior years.

Insurance Reserve Adjustments

Actuarial Reviews and Updates Performed During 2024

We review our self-insurance liabilities on a quarterly basis and adjust our accruals accordingly. Actual claims activity or development may vary from our assumptions and estimates, which may result in material losses or gains. As we obtain additional information that affects the assumptions and estimates used in our reserve liability calculations, we adjust our self-insurance rates and reserves for future periods and, if appropriate, adjust our reserves for claims incurred in prior accounting periods.

During the first and third quarters of 2024, we performed comprehensive actuarial reviews of the majority of our casualty insurance programs to evaluate changes made to claims reserves and claims payment activity for the periods of May 1, 2023, through October 31, 2023, and November 1, 2023, through April 30, 2024, respectively (the “Actuarial Reviews”). The Actuarial Reviews were comprehensive in nature and were based on loss development patterns, trend assumptions, and underlying expected loss costs during the periods analyzed.

During the second and fourth quarters of 2024, we performed interim actuarial updates of the majority of our casualty insurance programs that considered changes in claims development and claims payment activity for the respective periods analyzed (the “Interim Updates”). These Interim Updates were abbreviated in nature based on actual versus expected development during the periods analyzed and relied on the key assumptions in the Actuarial Reviews (most notably loss development patterns, trend assumptions, and underlying expected loss costs).

Based on the results of the Actuarial Reviews and Interim Updates, we increased our total reserves related to prior years for known claims as well as our estimate of the loss amounts associated with IBNR Claims during 2024 by $20.3 million. The adverse development was offset by improvements in other legacy programs. In 2023, we decreased our total reserves related to prior year claims by $14.8 million.

Insurance-Related Balances and Activity


	As of October 31,
(in millions)	2024		2023
Insurance claim reserves, excluding medical and dental	$	608.4	$	555.0
Medical and dental claim reserves and other	11.0		9.5
Insurance recoverables	91.0		67.1

At October 31, 2024 and 2023, insurance recoverables are included in both “Other current assets” and “Other noncurrent assets” on the accompanying Consolidated Balance Sheets.

Casualty Program Insurance Reserves Rollforward


	Years Ended October 31,
(in millions)	2024		2023		2022
Net balance at beginning of year	$	487.9	$	479.9	$	508.3
Change in case reserves plus IBNR Claims — current year	166.2		154.2		145.7
Change in case reserves plus IBNR Claims — prior years	20.3		(14.8)		(36.8)
Claims paid	(157.3)		(131.4)		(129.1)
Acquisition	—		—		(8.2)
Net balance, October 31(1)	517.3		487.9		479.9
Recoverables	91.0		67.1		71.0
Gross balance, October 31	$	608.4	$	555.0	$	551.0

(1) Includes reserves related to discontinued operations of approximately $0.7 million for 2024, $0.1 million for 2023, and $0.2 million for 2022.

Instruments Used to Collateralize Our Insurance Obligations


	As of October 31,
(in millions)	2024		2023
Standby letters of credit	$	53.1	$	53.5
Surety bonds and surety-backed letters of credit	175.3		178.0
Restricted insurance deposits	2.3		3.1
Total	$	230.7	$	234.7

CREDIT FACILITY - Schedule of Interest Rate Swaps (Details) - USD ($)	Oct. 31, 2025	Nov. 01, 2022	Jul. 31, 2022	Jul. 18, 2022	Jul. 07, 2022	May 04, 2022	Feb. 25, 2022	Feb. 09, 2022
Line of Credit Facility [Line Items]
Notional Amount			$ 300,000,000
Forecast
Line of Credit Facility [Line Items]
Notional Amount	$ 100,000,000
Interest Rate Swap, Effective 2/9/2022
Line of Credit Facility [Line Items]
Notional Amount								$ 100,000,000.0
Fixed Interest Rate								1.72%
Interest Rate Swap, Effective 2/25/2022
Line of Credit Facility [Line Items]
Notional Amount							$ 150,000,000.0
Fixed Interest Rate							1.85%
Interest Rate Swap, Effective 5/4/2022
Line of Credit Facility [Line Items]
Notional Amount						$ 100,000,000.0
Fixed Interest Rate						2.88%
Interest Rate Swap, Effective 7/7/2022
Line of Credit Facility [Line Items]
Notional Amount					$ 161,900,000
Fixed Interest Rate					2.83%
Interest Rate Swap, Effective 7/18/2022
Line of Credit Facility [Line Items]
Notional Amount				$ 13,100,000
Fixed Interest Rate				2.79%
Interest Rate Swap, Effective 11/1/2022
Line of Credit Facility [Line Items]
Notional Amount		$ 170,000,000.0
Fixed Interest Rate		3.81%

LEASES - Schedule of Components of Lease assets and Liabilities (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Lease assets
Operating leases	$ 101.2	$ 113.4
Finance leases	$ 20.5	$ 15.2
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, plant and equipment, net of accumulated depreciation of $351.3 and $326.5 at October 31, 2024 and 2023, respectively	Property, plant and equipment, net of accumulated depreciation of $351.3 and $326.5 at October 31, 2024 and 2023, respectively
Total lease assets	$ 121.7	$ 128.6
Current liabilities
Operating leases	26.6	32.5
Finance leases	$ 4.5	$ 3.1
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Noncurrent liabilities
Operating leases	$ 92.0	$ 98.8
Finance leases	$ 15.0	$ 11.1
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities	Other noncurrent liabilities
Total lease liabilities	$ 138.1	$ 145.5
Accumulated amortization of finance lease assets	$ 23.1	$ 18.9

INCOME TAXES - Narrative (Details) $ in Millions	12 Months Ended
INCOME TAXES - Narrative (Details) $ in Millions	Oct. 31, 2024 USD ($) state	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Income Taxes [Line Items]
Effective tax rate	39.10%	24.10%	25.70%
Income tax provision	$ 52.2	$ 79.7	$ 79.6
Non-taxable change to increase (decrease) fair value of contingent consideration	95.7	(45.6)	0.0
Benefit related to energy efficient incentives	5.5
Tax credits	4.1
Unrecognized tax benefits that would impact effective tax rate	15.5	20.7	22.0
Maximum decrease in unrecognized tax benefits that is reasonably possible	0.1
Uncertain tax positions, interest and penalties accrued	1.3	1.4
Unrecognized tax benefits, interest and penalties benefit	$ 0.1		$ 0.9
Unrecognized tax benefits, interest and penalties expense		$ 0.7
Number of states in which entity operates \| state	50
Foreign Tax Jurisdiction
Income Taxes [Line Items]
Return to provision adjustments	$ (7.3)
State and Local Jurisdiction
Income Taxes [Line Items]
Operating loss carryforwards	$ 46.5

Pay vs Performance Disclosure - USD ($) $ in Millions	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Pay vs Performance Disclosure
Net income	$ 81.4	$ 251.3	$ 230.4

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-6

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-3

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-4

Reference 17: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-10

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-7

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-7

Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

PREFERRED AND COMMON STOCK (Tables)

12 Months Ended

Oct. 31, 2024

Stockholders' Equity Note [Abstract]

Schedule of Repurchase Activity


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023
Total number of shares purchased	1.17		3.34
Average price paid per share(1)	$	47.86	$	41.06
Total cash paid for share repurchases(1)	$	55.8	$	137.1

(1) Average price paid per share and total cash paid for share repurchases does not include any excise tax for stock repurchases as part of the Inflation Reduction Act of 2022.

INCOME TAXES - Schedule of Reconciliation of Total Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 20.7	$ 22.0	$ 30.4
Additions for tax positions related to prior years	0.0	2.1	0.3
Reductions for tax positions related to prior years	(1.5)	(1.5)	(1.5)
Reductions for lapse of statute of limitations	(0.1)	(1.9)	(7.2)
Settlements	(3.6)	0.0	0.0
Balance at end of year	$ 15.5	$ 20.7	$ 22.0

SEGMENT AND GEOGRAPHIC INFORMATION

12 Months Ended

Oct. 31, 2024

Segment Reporting [Abstract]

SEGMENT AND GEOGRAPHIC INFORMATION

Segment Information

Our current reportable segments consist of B&I, M&D, Education, Aviation, and Technical Solutions, as further described below.


REPORTABLE SEGMENTS AND DESCRIPTIONS
B&I			B&I, our largest reportable segment, encompasses janitorial, facilities engineering, and parking services for commercial real estate properties (including corporate offices for high-tech clients), sports and entertainment venues, and traditional hospitals and non-acute healthcare facilities. B&I also provides vehicle maintenance and other services to rental car providers.
M&D			M&D provides integrated facility services, engineering, janitorial, and other specialized services in different types of manufacturing, distribution, and data center facilities. Manufacturing facilities include traditional motor vehicles, electric vehicles, batteries, pharmaceuticals, steel, semiconductors, chemicals, and many others. Distribution facilities include e-commerce, cold storage, logistics, general warehousing, and others.
Education			Education delivers janitorial, custodial, landscaping and grounds, facilities engineering, and parking services for public school districts, private schools, colleges, and universities.
Aviation			Aviation supports airlines and airports with services ranging from parking and janitorial to passenger assistance, catering logistics, air cabin maintenance, and transportation.
Technical Solutions			Technical Solutions specializes in facility infrastructure, mechanical and electrical services, including EV power design, installation and maintenance, as well as microgrid systems installations and uninterrupted power supply services. These services can also be leveraged for cross-selling across all of our industry groups, both domestically and internationally.

The accounting policies for our segments are the same as those disclosed within our significant accounting policies in Note 2, “Basis of Presentation and Significant Accounting Policies.” Our management evaluates the performance of each reportable segment based on its respective operating profit results, which include the allocation of certain centrally incurred costs. Corporate expenses not allocated to segments include certain CEO and other finance and human resource departmental expenses, certain information technology costs, share-based compensation, certain legal costs and settlements, restructuring and related costs, certain actuarial adjustments to self-insurance reserves, and direct acquisition costs. Management does not review asset information by segment, therefore we do not present assets in this note.

Financial Information by Reportable Segment


	Year Ended October 31,
(in millions)	2024		2023		2022
Revenues
Business & Industry	$	4,059.1	$	4,089.4	$	4,095.9
Manufacturing & Distribution	1,554.3		1,526.7		1,445.2
Aviation	1,032.6		925.7		804.0
Education	904.0		880.4		834.7
Technical Solutions	809.3		674.2		626.8

	$	8,359.4	$	8,096.4	$	7,806.6
Operating profit (loss)
Business & Industry	$	307.0	$	315.6	$	334.9
Manufacturing & Distribution	166.3		161.7		161.8
Aviation	59.1		60.0		29.3
Education	55.3		49.7		47.1
Technical Solutions(1)	69.4		53.2		63.8
Government Services	—		—		(0.3)
Corporate(2) (3)	(433.1)		(226.6)		(284.5)
Adjustment for income from unconsolidated affiliates, included in Aviation and Technical Solutions	(6.5)		(3.9)		(2.4)
Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions	(5.5)		(0.3)		(0.9)
	212.0		409.5		348.8
Income from unconsolidated affiliates	6.5		3.9		2.4
Interest expense	(85.0)		(82.3)		(41.1)
Income before income taxes	$	133.6	$	331.1	$	310.0

Depreciation and amortization
Business & Industry	$	37.3	$	44.9	$	47.1
Manufacturing & Distribution	12.2		13.1		13.4
Aviation	12.6		9.6		8.2
Education	21.8		22.5		25.4
Technical Solutions	7.7		17.5		7.0

Corporate	15.0		13.1		11.4
	$	106.6	$	120.7	$	112.4

(1) Reflects a $7.6 million gain on the sale of assets during the year ended October 31, 2022.

(2) Reflects adjustments to the fair value of the contingent consideration payable related to the RavenVolt Acquisition of $95.7 million during the year ended October 31, 2024.

Geographic Information Based on the Country in Which the Sale Originated(1)


	Year Ended October 31,
(in millions)	2024		2023		2022
Revenues
United States	$	7,760.9	$	7,565.6	$	7,335.3
All other countries	598.4		530.8		471.3
	$	8,359.4	$	8,096.4	$	7,806.6

(1) Substantially all of our long-lived assets are related to U.S. operations.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 9: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-34

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26C

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-15

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/280/tableOfContent

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

+ Details

LEASES - Schedule of Lease, Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Finance lease costs:
Operating expenses	$ 4.6	$ 2.4
Interest expense	1.1	0.5
Total lease costs	113.8	99.0
Short-term lease costs	64.0	53.5
Variable lease costs	6.8	6.4
Total short-term and variable lease costs	70.8	59.9
Operating Expenses
Operating lease costs:
Operating lease, cost	81.6	70.6
Selling, General and Administrative Expenses
Operating lease costs:
Operating lease, cost	$ 26.4	$ 25.4

NET INCOME PER COMMON SHARE - Schedule of Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income	$ 81.4	$ 251.3	$ 230.4
Weighted-average common and common equivalent shares outstanding—Basic (in shares)	63.2	66.0	67.1
Effect of dilutive securities
Weighted-average common and common equivalent shares outstanding—Diluted (in shares)	63.6	66.3	67.5
Net income per common share
Basic (in USD per share)	$ 1.29	$ 3.81	$ 3.44
Diluted (in USD per share)	$ 1.28	$ 3.79	$ 3.41
RSUs
Effect of dilutive securities
Effect of dilutive securities (in shares)	0.3	0.2	0.2
Performance shares
Effect of dilutive securities
Effect of dilutive securities (in shares)	0.1	0.2	0.2

CREDIT FACILITY

12 Months Ended

Oct. 31, 2024

Debt Disclosure [Abstract]

CREDIT FACILITY


	As of October 31,
(in millions)	2024		2023
Current portion of long-term debt(1)(2)
Gross term loan	$	32.5	$	32.5
Unamortized deferred financing costs	(0.9)		(1.0)
Current portion of term loan	$	31.6	$	31.5



Long-term debt(1)(2)
Gross term loan	$	503.8	$	536.3
Unamortized deferred financing costs	(0.6)		(1.5)
Total noncurrent portion of term loan	503.2		534.8
Revolving line of credit(3)	799.0		745.0
Long-term debt	$	1,302.2	$	1,279.8

(1) At October 31, 2024, and October 31, 2023, the weighted average interest rate on our outstanding borrowings, not including letters of credit and swaps, was 6.68%.and 7.17%, respectively.

(2) At October 31, 2024, we had borrowing capacity of up to $423.6 million

(3) At October 31, 2024 standby letters of credit amounted to $57.9 million

On September 1, 2017, we refinanced and replaced our then-existing $800.0 million credit facility with a new senior, secured five-year syndicated credit facility, consisting of a $900.0 million revolving line of credit and an $800.0 million amortizing term loan, both of which were scheduled to mature on September 1, 2022. In accordance with the terms of the Credit Facility, the revolving line of credit was reduced to $800.0 million on September 1, 2018.

On June 28, 2021, the Company amended and restated the Credit Facility with the Second Amendment, extending the maturity date to June 28, 2026, and increasing the capacity of the revolving credit facility from $800.0 million to $1.3 billion and the then remaining term loan outstanding from $620.0 million to $650.0 million. The Amended Credit Facility provides for the issuance of up to $350.0 million for standby letters of credit and the issuance of up to $75.0 million in swingline advances. The obligations under the Amended Credit Facility are secured on a first-priority basis by a lien on substantially all of our assets and properties, subject to certain exceptions. Additionally, we may repay amounts borrowed under the Amended Credit Facility at any time without penalty.

At November 1, 2022, we amended our Amended Credit Facility pursuant to the LIBOR Transition Amendment and the Fifth Amendment to replace the benchmark rate at which U.S.-dollar-denominated borrowings bear interest from LIBOR to the forward-looking Secured Overnight Financing Rate (“SOFR”) term rate administered by CME Group Benchmark Administration Limited. As a result of these amendments, we can borrow at Term SOFR plus a credit spread adjustment of 0.10% subject to a floor of zero.

The Amended Credit Facility contains certain covenants, including a maximum total net leverage ratio of 5.00 to 1.00, a maximum secured net leverage ratio of 4.00 to 1.00, and a minimum interest coverage ratio of 1.50 to 1.00, as well as other financial and non-financial covenants. In the event of a material acquisition, as defined in the Amended Credit Facility, we may elect to increase the maximum total net leverage ratio to 5.50 to 1.00 for a total of four fiscal quarters and increase the maximum secured net leverage ratio to 4.50 to 1.00 for a total of four fiscal quarters. Our borrowing capacity is subject to, and limited by, compliance with the covenants described above. At October 31, 2024, we were in compliance with these covenants.

The Amended Credit Facility also includes customary events of default, including: failure to pay principal, interest, or fees when due; failure to comply with covenants; the occurrence of certain material judgments; and a change in control of the Company. If certain events of default occur, including certain cross-defaults, insolvency, change in control, or violation of specific covenants, then the lenders can terminate or suspend our access to the Amended Credit Facility, declare all amounts outstanding (including all accrued interest and unpaid fees) to be immediately due and payable, and require that we cash collateralize the outstanding standby letters of credit.

We incurred deferred financing costs of $6.4 million in conjunction with the Second Amendment and carried over $6.2 million of unamortized deferred financing from the initial execution, First Amendment, and previous amendments of the Credit Facility. Total deferred financing costs of $12.6 million, consisting of $4.9 million related to the term loan and $7.7 million related to the revolver, are being amortized to interest expense over the term of the Amended Credit Facility.

Long-Term Loan Maturities

During 2024, we made principal payments under the term loan of $32.5 million. As of October 31, 2024, the following principal payments are required under the Amended Credit Facility.


(in millions)	2025		2026		2027		2028		2029
Debt maturities	$	32.5	$	1,302.8	$	—	$	—	$	—

Interest Rate Swaps

We enter into interest rate swaps to manage the interest rate risk associated with our floating-rate, SOFR-based borrowings. Under these arrangements, we typically pay a fixed interest rate in exchange for SOFR-based variable interest throughout the life of the agreement. We initially report the mark-to-market gain or loss on a derivative as a component of AOCL and subsequently reclassify the gain or loss into earnings when the hedged transactions occur and affect earnings. Interest payables and receivables under the swap agreements are accrued and recorded as adjustments to interest expense. All of our interest rate swaps have been designated and accounted for as cash flow hedges from inception. See Note 7, “Fair Value of Financial Instruments,” regarding the valuation of our interest rate swaps.

Notional Amount

Fixed Interest Rate

Effective Date

Maturity Date

$ 100.0 million

1.72%

February 9, 2022

June 28, 2026

$ 150.0 million

1.85%

February 25, 2022

June 28, 2026

$ 100.0 million

2.88%

May 4, 2022

June 28, 2026

$161.9 million(1)

2.83%

July 7, 2022

June 28, 2026

$13.1 million(1)

2.79%

July 18, 2022

June 28, 2026

$ 170.0 million

3.81%

November 1, 2022

June 28, 2026

At October 31, 2024 and 2023, amounts recorded in AOCL for interest rate swaps were a gain of $9.2 million, net of taxes of $4.3 million, and a gain of $26.0 million, net of taxes of $10.5 million, respectively. At October 31, 2024, the total amount expected to be reclassified from AOCL to earnings during the next 12 months was $5.9 million, net of taxes of $2.2 million.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/470/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

+ Details

INSURANCE - Schedule of Insurance Related Balances and Activity (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Liability for Claims and Claims Adjustment Expense [Line Items]
Insurance recoverables	$ 91.0	$ 67.1
Insurance claim reserves, excluding medical and dental
Liability for Claims and Claims Adjustment Expense [Line Items]
Insurance claims reserves	608.4	555.0
Medical and dental claim reserves and other
Liability for Claims and Claims Adjustment Expense [Line Items]
Insurance claims reserves	$ 11.0	$ 9.5

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Basis of Presentation [Line Items]
Investments in unconsolidated affiliates	$ 30.8	$ 28.8
Revenues	8,359.4	8,096.4	$ 7,806.6
Advertising expense	10.9	8.8	6.0
Employee retention credit		24.0
Management Reimbursement Revenue
Basis of Presentation [Line Items]
Revenues	$ 318.2	$ 302.3	$ 280.6
Service Maintenance
Basis of Presentation [Line Items]
Contracts with customer, agreement term	1 year
Minimum
Basis of Presentation [Line Items]
Lease term	1 year
Maximum
Basis of Presentation [Line Items]
Lease term	20 years

FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - Fair Value Measurements, Recurring - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 64.6	$ 69.5
Insurance deposits	2.3	3.1
Assets held in funded deferred compensation plan	4.4	4.0
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit facility	1,335.3	1,313.8
Interest rate swaps assets	13.5	36.4
Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Preferred equity investments	15.4	15.4
Contingent consideration	$ 109.1	$ 13.4

SCHEDULE II - VALULATION AND QUALIFYING ACCOUNTS

12 Months Ended

Oct. 31, 2024

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALULATION AND QUALIFYING ACCOUNTS

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS


(in millions)	Balance Beginning of Year		Additions from Acquisitions	Charges to Costs and Expenses(1)	Write-offs(2)/ Allowance Taken	Balance End of Year
Accounts receivable and sales allowances
2024	$	25.0	0.3	88.7	(91.3)	$	22.8
2023	22.6		—	76.0	(73.6)	25.0
2022	32.7		1.4	60.6	(72.1)	22.6

(1) Majority of charges to costs and expenses relates to sales allowance.

(2) Write-offs are net of recoveries.

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 2,491.3	$ 2,485.6
Acquisitions	80.6	1.1
Foreign currency translation	4.1	4.7
Ending balance	2,575.9	2,491.3
Business & Industry
Goodwill [Roll Forward]
Beginning balance	1,092.7	1,087.8
Acquisitions	0.0	1.3
Foreign currency translation	2.6	3.6
Ending balance	1,095.5	1,092.7
Manufacturing & Distribution
Goodwill [Roll Forward]
Beginning balance	502.2	502.2
Acquisitions	0.0	0.0
Foreign currency translation	0.0	0.0
Ending balance	502.2	502.2
Education
Goodwill [Roll Forward]
Beginning balance	459.3	459.3
Acquisitions	0.0	0.0
Foreign currency translation	0.0	0.0
Ending balance	459.3	459.3
Aviation
Goodwill [Roll Forward]
Beginning balance	69.0	68.7
Acquisitions	0.0	0.0
Foreign currency translation	0.4	0.3
Ending balance	69.4	69.0
Technical Solutions
Goodwill [Roll Forward]
Beginning balance	368.0	367.4
Acquisitions	80.6	(0.1)
Foreign currency translation	1.1	0.8
Ending balance	$ 449.6	$ 368.0

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(15))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482598/350-20-45-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

+ Details

GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment charges	$ 0	$ 0

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Estimated Useful Lives of Property, Plant and Equipment (Details)	Oct. 31, 2024
Computer equipment and software \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	3 years
Computer equipment and software \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	7 years
Machinery and other equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	3 years
Machinery and other equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	5 years
Transportation equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	1 year 6 months
Transportation equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	10 years
Buildings \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	10 years
Buildings \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	40 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	5 years

INCOME TAXES - Schedule of Geographic Sources of Income Before Income Taxes / Schedule of Reconciliation of U.S. Statutory Tax Rate to Annual Effective Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Tax Disclosure [Abstract]
United States	$ 88.8	$ 294.3	$ 278.5
Foreign	44.8	36.8	31.5
Income before income taxes	133.6	331.1	310.0
Current:
Federal	(53.7)	(50.6)	3.5
State	(22.8)	(25.0)	(6.0)
Foreign	(0.4)	(9.0)	(9.4)
Deferred:
Federal	19.3	(0.5)	(46.1)
State	6.7	5.3	(22.1)
Foreign	(1.3)	0.1	0.5
Income tax provision	$ (52.2)	$ (79.7)	$ (79.6)

REVENUES (Tables)

12 Months Ended

Oct. 31, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenues


	Year Ended October 31, 2024
(in millions)	B&I		M&D		Education		Aviation		Technical Solutions		Total
Major Service Line
Janitorial(1)	$	2,781.4	$	1,347.0	$	798.7	$	189.0	$	—	$	5,116.1
Parking(2)	418.9		51.2		0.4		334.5		—		804.9
Facility Services(3)	858.9		156.1		105.0		47.3		—		1,167.2
Building & Energy Solutions(4)	—		—		—		—		809.3		809.3
Airline Services(5)	—		—		—		461.8		—		461.8
Total	$	4,059.1	$	1,554.3	$	904.0	$	1,032.6	$	809.3	$	8,359.4


	Year Ended October 31, 2023
(in millions)	B&I		M&D		Education		Aviation		Technical Solutions		Total
Major Service Line
Janitorial(1)	$	2,745.2	$	1,330.8	$	774.8	$	146.9	$	—	$	4,997.7
Parking(2)	408.2		42.5		0.8		329.3		—		780.8
Facility Services(3)	936.0		153.4		104.8		32.0		—		1,226.2
Building & Energy Solutions(4)	—		—		—		—		674.2		674.2
Airline Services(5)	—		—		—		417.5		—		417.5
Total	$	4,089.4	$	1,526.7	$	880.4	$	925.7	$	674.2	$	8,096.4

Schedule of Contract Asset and Liability

The following tables present the balances in our contract assets and contract liabilities:


	As of October 31,
(in millions)	2024		2023
Contract assets
Billed trade receivables(1)	$	1,282.9	$	1,219.6
Unbilled trade receivables(1)	124.0		170.4
Costs incurred in excess of amounts billed(2)	162.1		139.2
Capitalized commissions(3)	30.8		30.2

(2) Fluctuation is primarily due to the timing of payments on our contracts measured using the cost-to-cost method of revenue recognition.


(in millions)	Year Ended October 31, 2024
Contract liabilities(1)
Balance at beginning of year	$	141.2
Acquisition additions (2)	3.9
Additional contract liabilities	256.7
Recognition of deferred revenue	(283.7)
Balance at end of year	$	118.2

(1) Included in other accrued liabilities on the Consolidated Balance Sheets.

(2) Represents additions associated with the Quality Uptime Acquisition.

CONSOLIDATED STATEMENTS OF COMREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Statement [Abstract]
Revenues	$ 8,359.4	$ 8,096.4	$ 7,806.6
Operating expenses	7,325.9	7,037.6	6,757.5
Selling, general and administrative expenses	765.3	572.8	628.3
Amortization of intangible assets	56.1	76.5	72.1
Operating profit	212.0	409.5	348.8
Income from unconsolidated affiliates	6.5	3.9	2.4
Interest expense	(85.0)	(82.3)	(41.1)
Income before income taxes	133.6	331.1	310.0
Income tax provision	(52.2)	(79.7)	(79.6)
Net income	81.4	251.3	230.4
Other comprehensive (loss)/income
Interest rate swaps	(22.9)	(0.5)	36.7
Foreign currency translation and other	6.8	7.3	(19.8)
Income tax provision	6.3	0.1	(10.5)
Comprehensive income	$ 71.6	$ 258.1	$ 236.9
Net income per common share
Basic (in USD per share)	$ 1.29	$ 3.81	$ 3.44
Diluted (in USD per share)	$ 1.28	$ 3.79	$ 3.41
Weighted-average common and common equivalent shares outstanding
Basic (in shares)	63.2	66.0	67.1
Diluted (in shares)	63.6	66.3	67.5

SHARE-BASED COMPENSATION PLANS - Schedule of Compensation Expense by Type of Award and Related Income Tax Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense before income taxes	$ 30.0	$ 30.5	$ 30.5
Income tax benefit	(8.4)	(8.6)	(8.6)
Share-based compensation expense, net of taxes	21.6	21.8	21.9
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense before income taxes	19.9	17.7	18.5
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense before income taxes	$ 10.1	$ 12.7	$ 12.0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

SHARE-BASED COMPENSATION PLANS (Tables)

12 Months Ended

Oct. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Compensation Expense by Type of Award and Related Income Tax Benefit

Compensation Expense by Type of Award and Related Income Tax Benefit


	Years Ended October 31,
(in millions)	2024		2023		2022
RSUs	$	19.9	$	17.7	$	18.5
Performance shares	10.1		12.7		12.0

Share-based compensation expense before income taxes	30.0		30.5		30.5
Income tax benefit	(8.4)		(8.6)		(8.6)
Share-based compensation expense, net of taxes	$	21.6	$	21.8	$	21.9

Schedule of RSU Activity

RSU Activity


	Number of Shares (in millions)	Weighted-Average Grant Date Fair Value per Share
Outstanding at October 31, 2023	1.0	$	41.09
Granted	0.8	41.32
Vested (including 0.1 shares withheld for income taxes)	(0.4)	42.09

Forfeited	(0.1)	42.40
Outstanding at October 31, 2024	1.2	$	40.82

Schedule of Performance Share Activity

Performance Share Activity


	Number of Shares (in millions)	Weighted-Average Grant Date Fair Value per Share
Outstanding at October 31, 2023	0.9	$	44.43
Granted	0.4	41.62
Vested (including 0.1 shares withheld for income taxes)	(0.3)	40.35
Performance adjustments	(0.1)	48.36
Forfeited	(0.1)	44.20
Outstanding at October 31, 2024	0.9	$	44.06

Schedule of Monte Carlo Assumptions

In 2024, 2023, and 2022, we used the Monte Carlo simulation valuation technique to estimate the fair value of TSR performance share grants, which used the assumptions in the table below.

Monte Carlo Assumptions


	2024			2023			2022
Expected life(1)	2.81 years			2.81 years			2.81 years
Expected stock price volatility(2)	33.0		%	39.9		%	41.8		%

Risk-free interest rate(3)	4.1		%	4.0		%	1.1		%
Stock price(4)	$	42.13		$	46.19		$	42.88

(1) The expected life represents the remaining performance period of the awards.

(4) The stock price is the closing price of our common stock on the valuation date.

Schedule of Employee Stock Purchase Plan

Employee Stock Purchase Plan


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023		2022
Weighted-average fair value of granted purchase rights per share	$	2.31	$	2.23	$	2.19
Common stock issued	0.1		0.1		0.1
Fair value of common stock issued per share	$	43.93	$	42.40	$	41.68
Aggregate purchases	$	3.7	$	3.4	$	3.4

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 502.0	$ 458.0
Less: Accumulated depreciation	351.3	326.5
Total	150.7	131.5
Depreciation expense	50.5	44.2	$ 40.3
Machinery and other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	172.9	170.7
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	117.2	110.7
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	95.9	79.0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	85.5	69.3
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	22.1	19.8
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7.7	7.7
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 0.7	$ 0.8

EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Oct. 31, 2024

Retirement Benefits [Abstract]

Schedule of Information for the Plans

Information for the Plans


	As of October 31,
(in millions)	2024		2023
Net obligations	$	6.9	$	6.1
Projected benefit obligations(1)	12.5		11.9
Fair value of assets	5.6		5.8

(1) At October 31, 2024 and 2023, total projected benefit obligations related to unfunded and underfunded plans were $12.5 million and $11.9 million, respectively.

Schedule of Multiemployer Defined Benefit Pension Plans

Key Information for Individually Significant Multiemployer Defined Benefit Pension Plans(1)

($ in millions)

Pension Protection Act

Zone Status(3)

FIP/RP

Status(4)

Contributions by ABM

Surcharge

Imposed(5)

Expiration Dates of Collective Bargaining Agreements

Pension Fund

EIN/PN(2)

2024

2023

Pending/
Implemented

2024

2023

2022

Building Service 32BJ Pension Fund

13-1879376 / 001

Yellow 6/30/2024

Yellow 6/30/2023

Implemented

22.1

21.4

22.7

10/15/2027 - 12/31/2027

S.E.I.U National Industry Pension Fund

52-6148540 / 001

Red 12/31/2023

Red 12/31/2022

Implemented

19.4

19.3

17.6

Yes

6/30/2025 - 7/31/2028

Central Pension Fund of the IUOE & Participating Employers

36-6052390 / 001

Green 1/31/2024

Green 1/31/2023

N/A*

12.4

13.0

12.8

N/A*

12/31/2024 - 6/30/2029

SEIU Local 1 & Participating Employers Pension Trust

36-6486542 / 001

Green 9/30/2023

Green 9/30/2022

N/A*

4.3

4.8

5.8

N/A*

5/31/2026 - 4/4/2027

Western Conference of Teamsters Pension Plan

91-6145047 / 001

Green 12/31/2023

Green 12/31/2022

N/A*

2.7

2.4

2.2

N/A*

11/30/2026 - 12/31/2029

IUOE Stationary Engineers Local 39 Pension Plan

94-6118939 / 001

Green 12/31/2023

Green 12/31/2022

N/A*

2.5

4.6

4.4

N/A*

8/31/2029

All Other Plans:

13.9

8.0

8.2

Total Contributions

77.3

73.6

73.8

*Not applicable

(2) The “EIN/PN” column provides the Employer Identification Number and the three-digit plan number assigned to the plan by the IRS.

(4) Indicates whether a Financial Improvement Plan (“FIP”) for yellow zone plans or a Rehabilitation Plan (“RP”) for red zone plans is pending or implemented.

Multiemployer Pension Plans for which ABM Is a Significant Contributor


Pension Fund						Contributions to the plan exceeded more than 5% of total contributions per most currently available Forms 5500 (as of the plan’s year end)
Apartment Employees Trust Fund*						12/31/2022 and 12/31/2021
Arizona Sheet Metal Pension Trust Fund*						6/30/2023, 6/30/2022,and 6/30/2021
Building Service 32BJ Pension Fund						6/30/2023, 6/30/2022,and 6/30/2021
Building Service Pension Plan*						4/30/2023, 4/30/2022, and 4/30/2021
Central Pennsylvania Teamsters Defined Benefit Plan*						12/31/2023
Central Pension Fund of the IUOE & Participating Employers						1/31/2024 and 1/31/2023
Contract Cleaners Service Employees' Pension Plan*						12/31/2022 and 12/31/2021
IUOE Local 30 Pension Fund*						12/31/2023 and 12/31/2022
IUOE Stationary Engineers Local 39 Pension Plan						12/31/2023, 12/31/2022, and 12/31/2021
Local 210's Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
Local 670 Pension Plan*						12/31/2023, 12/31/2022
Local 68 Engineers Union Pension Plan*						6/30/2023
Local 808 IBT Pension Fund*						9/30/2023
Massachusetts Service Employees Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
S.E.I.U National Industry Pension Fund						12/31/2023, 12/31/2022, and 12/31/2021
SEIU Local 1 & Participating Employers Pension Trust						9/30/2023, 9/30/2022, and 9/30/2021
Service Employees International Union Local 1 Cleveland Pension Plan*						12/31/2023, 12/31/2022, and 12/31/2021
Service Employees International Union Local 32BJ, District 36 Building Operators Pension Trust Fund*						12/31/2023, 12/31/2022, and 12/31/2021
Teamsters Local 617 Pension Fund*						2/28/2023, 2/28/2022, and 2/28/2021
Teamsters Local Union No. 727 Pension Plan*						2/28/2023
U.S.W.U. Local 74 Welfare Fund*						12/31/2023, 12/31/2022, and 12/31/2021

* These plans are not separately listed in our multiemployer table as they represent an insignificant portion of our total multiemployer pension plan contributions.

- Definition

Tabular disclosure of information about multiemployer plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480547/715-80-55-8

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-9

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 80
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480576/715-80-50-9

+ Details

SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenues
Revenues	$ 8,359.4	$ 8,096.4	$ 7,806.6
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Operating profit (loss)
Operating profit (loss)
Operating profit (loss)	212.0	409.5	$ 348.8
Income from unconsolidated affiliates	6.5	3.9	2.4
Interest expense	(85.0)	(82.3)	(41.1)
Income before income taxes	133.6	331.1	310.0
Depreciation and amortization
Depreciation and amortization	106.6	120.7	112.4
Change in fair value of contingent consideration	95.7	(45.6)	0.0
Employee retention credit		24.0
Business & Industry
Revenues
Revenues	4,059.1	4,089.4	4,095.9
Manufacturing & Distribution
Revenues
Revenues	1,554.3	1,526.7	1,445.2
Aviation
Revenues
Revenues	1,032.6	925.7	804.0
Education
Revenues
Revenues	904.0	880.4	834.7
Technical Solutions
Revenues
Revenues	809.3	674.2	626.8
Operating Segments \| Business & Industry
Operating profit (loss)
Operating profit (loss)	307.0	315.6	334.9
Depreciation and amortization
Depreciation and amortization	37.3	44.9	47.1
Operating Segments \| Manufacturing & Distribution
Operating profit (loss)
Operating profit (loss)	166.3	161.7	161.8
Depreciation and amortization
Depreciation and amortization	12.2	13.1	13.4
Operating Segments \| Aviation
Operating profit (loss)
Operating profit (loss)	59.1	60.0	29.3
Depreciation and amortization
Depreciation and amortization	12.6	9.6	8.2
Operating Segments \| Education
Operating profit (loss)
Operating profit (loss)	55.3	49.7	47.1
Depreciation and amortization
Depreciation and amortization	21.8	22.5	25.4
Operating Segments \| Technical Solutions
Operating profit (loss)
Operating profit (loss)	69.4	53.2	63.8
Depreciation and amortization
Depreciation and amortization	7.7	17.5	7.0
Operating Segments \| Technical Solutions \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Customer Contracts For Healthcare Technology Management
Depreciation and amortization
Gain on the sale of assets			7.6
Operating Segments \| Government Services
Operating profit (loss)
Operating profit (loss)	0.0	0.0	(0.3)
Corporate
Operating profit (loss)
Operating profit (loss)	(433.1)	(226.6)	(284.5)
Depreciation and amortization
Depreciation and amortization	15.0	13.1	11.4
Corporate \| RavenVolt
Depreciation and amortization
Change in fair value of contingent consideration	(95.7)	(45.6)
Employee retention credit		24.0
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Operating profit (loss)
Income from unconsolidated affiliates	(6.5)	(3.9)	(2.4)
Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions	$ (5.5)	$ (0.3)	$ (0.9)

INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023
Deferred tax assets attributable to:
Self-insurance claims (net of recoverables)	$ 106.3	$ 95.2
Deferred and other compensation	29.0	31.4
Accounts receivable allowances	5.6	7.8
Settlement liabilities	3.4	4.5
Other accruals	4.0	4.3
State taxes	1.5	1.5
State net operating loss carryforwards	2.5	2.6
Tax credits	3.4	2.3
Unrecognized tax benefits	3.5	3.6
Operating lease liabilities	23.5	27.3
Gross deferred tax assets	182.7	180.5
Valuation allowance	(1.1)	(1.2)
Total deferred tax assets	181.6	179.3
Deferred tax liabilities attributable to:
Property, plant and equipment	(1.0)	(4.3)
Goodwill and other acquired intangibles	(194.8)	(200.0)
Right-of-use assets	(25.1)	(28.6)
Tax accounting method change	(6.3)	(11.7)
Other comprehensive income	(2.3)	(8.4)
Other	(12.3)	(11.3)
Total deferred tax liabilities	(241.8)	(264.3)
Net deferred tax liabilities	$ (60.2)	$ (85.0)

NET INCOME PER COMMON SHARE (Tables)

12 Months Ended

Oct. 31, 2024

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Income Per Common Share

Basic and Diluted Net Income Per Common Share Calculations


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023		2022


Net income	$	81.4	$	251.3	$	230.4

Weighted-average common and common equivalent shares outstanding — Basic	63.2		66.0		67.1
Effect of dilutive securities
RSUs	0.3		0.2		0.2

Performance shares	0.1		0.2		0.2
Weighted-average common and common equivalent shares outstanding — Diluted	63.6		66.3		67.5

Net income per common share
Basic	$	1.29	$	3.81	$	3.44

Diluted	$	1.28	$	3.79	$	3.41

Schedule of Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans

Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans


	Years Ended October 31,
(in millions)	2024	2023	2022
Anti-dilutive	0.1	0.3	—

THE COMPANY AND NATURE OF OPERATIONS (Details)	12 Months Ended
THE COMPANY AND NATURE OF OPERATIONS (Details)	Oct. 31, 2024 industry_group segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of industry groups \| industry_group	4
Number of technical solution segments \| segment	1

REVENUES - Schedule of Contract Asset and Liability (Details) - USD ($)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Revenue from Contract with Customer [Abstract]
Billed trade receivables	$ 1,282,900,000	$ 1,219,600,000
Unbilled trade receivables	124,000,000.0	170,400,000
Costs incurred in excess of amounts billed	162,100,000	139,200,000
Capitalized commissions	30,800,000	$ 30,200,000
Capitalized contract price	16,100,000
Amortization of previously capitalized contract costs	15,500,000
Impairment loss recorded on costs capitalized	0
Contract with Customer, Liabilities [Roll Forward]
Contract liabilities, balance at beginning of period	141,200,000
Acquisition additions	3,900,000
Additional contract liabilities	256,700,000
Recognition of deferred revenue	(283,700,000)
Contract liabilities, balance at end of period	$ 118,200,000

LEASES

12 Months Ended

Oct. 31, 2024

Leases [Abstract]

LEASES

The components of lease assets and liabilities and their classification on our Consolidated Balance Sheets were as follows:


		As of October 31,
(in millions)	Classification	2024		2023
Lease assets
Operating leases	Right-of-use assets	$	101.2	$	113.4
Finance leases	Property, plant and equipment, net(1)	20.5		15.2
Total lease assets		$	121.7	$	128.6

Lease liabilities
Current liabilities
Operating leases	Current portion of lease liabilities	$	26.6	$	32.5
Finance leases	Other accrued liabilities	4.5		3.1
Noncurrent liabilities
Operating leases	Long-term lease liabilities	92.0		98.8
Finance leases	Other noncurrent liabilities	15.0		11.1
Total lease liabilities		$	138.1	$	145.5

(1) Finance lease assets are recorded net of accumulated amortization of $23.1 million and $18.9 million as of October 31, 2024 and October 31, 2023, respectively.

The components of lease costs and classification within the Consolidated Statements of Comprehensive Income were as follows:


	Year Ended October 31,
(in millions)	2024		2023
Operating lease costs:
Operating expenses(1)(2)	$	81.6	$	70.6
Selling, general and administrative expenses(3)	26.4		25.4
Finance lease costs:
Operating expenses(4)	4.6		2.4

Interest expense(5)	1.1		0.5
Total lease costs	$	113.8	$	99.0

(1) Related to certain parking arrangements.

(2) Includes short-term lease costs and variable lease costs.

(3) Includes short-term lease costs.

(4) Represents amortization of leased assets.

(5) Interest on lease liabilities.

The following table presents information on short-term and variable lease costs:


	Year Ended October 31,
(in millions)	2024		2023
Short-term lease costs	$	64.0	$	53.5
Variable lease costs	6.8		6.4
Total short-term and variable lease costs	$	70.8	$	59.9

Sublease income generated during the year ended October 31, 2024, was immaterial.


(in millions)	Operating Lease Liabilities		Finance Lease Liabilities		Total
Fiscal 2025	$	31.9	$	5.5	$	37.4
Fiscal 2026	29.7		4.7		34.4
Fiscal 2027	22.8		3.1		25.9
Fiscal 2028	16.2		3.1		19.4
Fiscal 2029	11.6		3.1		14.7
Thereafter	25.1		3.1		28.2
Total lease payments	137.2		22.8		160.0
Less: imputed interest	18.5		3.3		21.9
Present value of lease liabilities	$	118.7	$	19.5	$	138.1

Future sublease rental income was excluded for the periods shown above as the amounts are immaterial.

We have entered into operating lease arrangements as of October 31, 2024, that are effective for future periods. The total amount of ROU assets and lease liabilities related to these arrangements is immaterial.

The following table includes the weighted-average remaining lease terms, in years, and the weighted-average discount rate used to calculate the present value of operating lease liabilities:


	Year Ended October 31,
	2024		2023
Weighted-average remaining lease term (years)
Operating leases	5.5		5.5
Finance leases	5.3		5.2
Weighted-average discount rate
Operating leases	5.05	%	4.60	%
Finance leases	5.88	%	5.28	%

The following table includes supplemental cash and non-cash information related to operating leases:


	Year Ended October 31,
(in millions)	2024		2023
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	35.3	$	37.9
Operating cash flows from finance leases	1.1		0.5
Financing cash flows from finance leases	4.2		3.0
Lease assets obtained in exchange for new operating lease liabilities	20.9		28.7

LEASES

The components of lease assets and liabilities and their classification on our Consolidated Balance Sheets were as follows:


		As of October 31,
(in millions)	Classification	2024		2023
Lease assets
Operating leases	Right-of-use assets	$	101.2	$	113.4
Finance leases	Property, plant and equipment, net(1)	20.5		15.2
Total lease assets		$	121.7	$	128.6

Lease liabilities
Current liabilities
Operating leases	Current portion of lease liabilities	$	26.6	$	32.5
Finance leases	Other accrued liabilities	4.5		3.1
Noncurrent liabilities
Operating leases	Long-term lease liabilities	92.0		98.8
Finance leases	Other noncurrent liabilities	15.0		11.1
Total lease liabilities		$	138.1	$	145.5

(1) Finance lease assets are recorded net of accumulated amortization of $23.1 million and $18.9 million as of October 31, 2024 and October 31, 2023, respectively.

The components of lease costs and classification within the Consolidated Statements of Comprehensive Income were as follows:


	Year Ended October 31,
(in millions)	2024		2023
Operating lease costs:
Operating expenses(1)(2)	$	81.6	$	70.6
Selling, general and administrative expenses(3)	26.4		25.4
Finance lease costs:
Operating expenses(4)	4.6		2.4

Interest expense(5)	1.1		0.5
Total lease costs	$	113.8	$	99.0

(1) Related to certain parking arrangements.

(2) Includes short-term lease costs and variable lease costs.

(3) Includes short-term lease costs.

(4) Represents amortization of leased assets.

(5) Interest on lease liabilities.

The following table presents information on short-term and variable lease costs:


	Year Ended October 31,
(in millions)	2024		2023
Short-term lease costs	$	64.0	$	53.5
Variable lease costs	6.8		6.4
Total short-term and variable lease costs	$	70.8	$	59.9

Sublease income generated during the year ended October 31, 2024, was immaterial.


(in millions)	Operating Lease Liabilities		Finance Lease Liabilities		Total
Fiscal 2025	$	31.9	$	5.5	$	37.4
Fiscal 2026	29.7		4.7		34.4
Fiscal 2027	22.8		3.1		25.9
Fiscal 2028	16.2		3.1		19.4
Fiscal 2029	11.6		3.1		14.7
Thereafter	25.1		3.1		28.2
Total lease payments	137.2		22.8		160.0
Less: imputed interest	18.5		3.3		21.9
Present value of lease liabilities	$	118.7	$	19.5	$	138.1

Future sublease rental income was excluded for the periods shown above as the amounts are immaterial.

The following table includes the weighted-average remaining lease terms, in years, and the weighted-average discount rate used to calculate the present value of operating lease liabilities:


	Year Ended October 31,
	2024		2023
Weighted-average remaining lease term (years)
Operating leases	5.5		5.5
Finance leases	5.3		5.2
Weighted-average discount rate
Operating leases	5.05	%	4.60	%
Finance leases	5.88	%	5.28	%

The following table includes supplemental cash and non-cash information related to operating leases:


	Year Ended October 31,
(in millions)	2024		2023
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	35.3	$	37.9
Operating cash flows from finance leases	1.1		0.5
Financing cash flows from finance leases	4.2		3.0
Lease assets obtained in exchange for new operating lease liabilities	20.9		28.7

INSURANCE - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
INSURANCE - Narrative (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Nov. 01, 2023
Schedule of Other Liabilities [Line Items]
Insurance policy coverage, general and automobile liability losses	$ 200.0
Insurance policy coverage, property damage	75.0
Change in case reserves plus IBNR Claims — prior years	20.3	$ (14.8)	$ (36.8)
Minimum
Schedule of Other Liabilities [Line Items]
Self insurance retention amount per-claim	1.0			$ 1.0
Primary policy limit	1.0
Maximum
Schedule of Other Liabilities [Line Items]
Self insurance retention amount per-claim	1.5			$ 5.0
Primary policy limit	5.0
Self insurance retention amount per-claim, medical plan	$ 0.5

PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Oct. 31, 2024

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

Property, Plant and Equipment


	As of October 31,
(in millions)	2024		2023
Machinery and other equipment	$	172.9	$	170.7
Computer equipment and software	117.2		110.7
Transportation equipment	95.9		79.0
Leasehold improvements	85.5		69.3
Furniture and fixtures	22.1		19.8
Buildings	7.7		7.7
Land	0.7		0.8
	502.0		458.0
Less: Accumulated depreciation(1)	351.3		326.5
Total	$	150.7	$	131.5

(1) For 2024, 2023, and 2022, depreciation expense was $50.5 million, $44.2 million, and $40.3 million, respectively.

NET INCOME PER COMMON SHARE

12 Months Ended

Oct. 31, 2024

Earnings Per Share [Abstract]

NET INCOME PER COMMON SHARE

Basic and Diluted Net Income Per Common Share Calculations


	Years Ended October 31,
(in millions, except per share amounts)	2024		2023		2022


Net income	$	81.4	$	251.3	$	230.4

Weighted-average common and common equivalent shares outstanding — Basic	63.2		66.0		67.1
Effect of dilutive securities
RSUs	0.3		0.2		0.2

Performance shares	0.1		0.2		0.2
Weighted-average common and common equivalent shares outstanding — Diluted	63.6		66.3		67.5

Net income per common share
Basic	$	1.29	$	3.81	$	3.44

Diluted	$	1.28	$	3.79	$	3.41

Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans


	Years Ended October 31,
(in millions)	2024	2023	2022
Anti-dilutive	0.1	0.3	—

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Oct. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill


(in millions)	Business & Industry		Manufacturing & Distribution		Education		Aviation		Technical Solutions		Total
Balance at October 31, 2022	$	1,087.8	$	502.2	$	459.3	$	68.7	$	367.4	$	2,485.6
Acquisitions	1.3		—		—		—		(0.1)		1.1
Foreign currency translation	3.6		—		—		0.3		0.8		4.7

Balance at October 31, 2023	$	1,092.7	$	502.2	$	459.3	$	69.0	$	368.0	$	2,491.3
Acquisitions (1)	—		—		—		—		80.6		80.6
Foreign currency translation	2.6		—		—		0.4		1.1		4.1
Balance at October 31, 2024	$	1,095.5	$	502.2	$	459.3	$	69.4	$	449.6	$	2,575.9

(1) During 2024, goodwill increased primarily as a result of the Quality Uptime Acquisition. See Note 3, “Acquisitions”, for additional information.

Schedule of Other Intangible Assets

Other Intangible Assets


	As of October 31,
	2024						2023
(in millions)	Gross Carrying Amount		Accumulated Amortization		Total		Gross Carrying Amount		Accumulated Amortization		Total
Customer contracts and relationships	$	748.2	$	(467.2)	$	281.0	$	714.1	$	(413.2)	$	300.9
Trademarks and trade names	12.7		(11.7)		1.0		12.1		(11.1)		1.0
Contract rights and other	0.7		(0.3)		0.5		15.0		(14.0)		1.1
Total(1)	$	761.7	$	(479.3)	$	282.4	$	741.2	$	(438.3)	$	302.9

(1) These intangible assets are being amortized over the expected period of benefit, with a weighted average life of approximately 11 years.

Schedule of Estimated Annual Amortization Expense

Estimated Annual Amortization Expense for Each of the Next Five Years


(in millions)	2025		2026		2027		2028		2029
Estimated amortization expense(1)	$	51.7	$	44.8	$	39.0	$	33.8	$	28.5

(1) These amounts could vary as acquisitions of additional intangible assets occur in the future and as acquisition accounting is finalized for existing acquisitions.

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

+ Details

INCOME TAXES (Tables)

12 Months Ended

Oct. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Geographic Sources of Income Before Income Taxes

Geographic Sources of Income Before Income Taxes


	Year Ended October 31,
(in millions)	2024		2023		2022
United States	$	88.8	$	294.3	$	278.5
Foreign	44.8		36.8		31.5
Income before income taxes	$	133.6	$	331.1	$	310.0

Schedule of Components of Income Tax Provision

Components of Income Tax Provision


	Year Ended October 31,
(in millions)	2024		2023		2022
Current:
Federal	$	(53.7)	$	(50.6)	$	3.5
State	(22.8)		(25.0)		(6.0)
Foreign	(0.4)		(9.0)		(9.4)
Deferred:
Federal	19.3		(0.5)		(46.1)
State	6.7		5.3		(22.1)
Foreign	(1.3)		0.1		0.5
Income tax provision	$	(52.2)	$	(79.7)	$	(79.6)

Schedule of Reconciliation of U.S. Statutory Tax Rate to Annual Effective Tax Rate

Reconciliation of the U.S. Statutory Tax Rate to Annual Effective Tax Rate


	Year Ended October 31,
	2024		2023		2022
U.S. statutory rate	21.0	%	21.0	%	21.0	%
State and local income taxes, net of federal tax benefit	8.0		6.9		7.7
Federal and state tax credits	(2.6)		(1.0)		(1.5)
Impact of foreign operations	(6.4)		0.8		(0.1)
Changes in uncertain tax positions	(2.2)		0.1		(2.5)
Incremental tax benefit from share-based compensation awards	(1.6)		(0.7)		(0.5)
Energy efficiency incentives	(4.1)		(0.1)		(0.3)
Nondeductible executive compensation	3.4		1.4		1.4
Nontaxable RavenVolt contingent consideration	20.1		(3.9)		—
Other nondeductible expenses	2.1		0.6		0.3
Other, net	1.4		(1.0)		0.2
Effective tax rate	39.1	%	24.1	%	25.7	%

Schedule of Components of Deferred Tax Assets and Liabilities

Components of Deferred Tax Assets and Liabilities


	As of October 31,
(in millions)	2024		2023
Deferred tax assets attributable to:
Self-insurance claims (net of recoverables)	$	106.3	$	95.2
Deferred and other compensation	29.0		31.4
Accounts receivable allowances	5.6		7.8
Settlement liabilities	3.4		4.5
Other accruals	4.0		4.3

State taxes	1.5		1.5
State net operating loss carryforwards	2.5		2.6
Tax credits	3.4		2.3
Unrecognized tax benefits	3.5		3.6

Operating lease liabilities	23.5		27.3
Gross deferred tax assets	182.7		180.5
Valuation allowance	(1.1)		(1.2)
Total deferred tax assets	181.6		179.3

Deferred tax liabilities attributable to:
Property, plant and equipment	(1.0)		(4.3)
Goodwill and other acquired intangibles	(194.8)		(200.0)
Right-of-use assets	(25.1)		(28.6)
Tax accounting method change	(6.3)		(11.7)
Other comprehensive income	(2.3)		(8.4)
Other	(12.3)		(11.3)
Total deferred tax liabilities	(241.8)		(264.3)

Net deferred tax liabilities	$	(60.2)	$	(85.0)

Schedule of Changes to the Valuation Allowance

Changes to the Valuation Allowance


	Years Ended October 31,
(in millions)	2024		2023		2022
Valuation allowance at beginning of year	$	1.2	$	1.6	$	2.2
Other, net	(0.1)		(0.4)		(0.6)
Valuation allowance at end of year	$	1.1	$	1.2	$	1.6

Schedule of Reconciliation of Total Unrecognized Tax Benefits

Reconciliation of Total Unrecognized Tax Benefits


	Years Ended October 31,
(in millions)	2024		2023		2022
Balance at beginning of year	$	20.7	$	22.0	$	30.4

Additions for tax positions related to prior years	—		2.1		0.3
Reductions for tax positions related to prior years	(1.5)		(1.5)		(1.5)
Reductions for lapse of statute of limitations	(0.1)		(1.9)		(7.2)
Settlements	(3.6)		—		—
Balance at end of year	$	15.5	$	20.7	$	22.0

INCOME TAXES

12 Months Ended

Oct. 31, 2024

Income Tax Disclosure [Abstract]

INCOME TAXES

Geographic Sources of Income Before Income Taxes


	Year Ended October 31,
(in millions)	2024		2023		2022
United States	$	88.8	$	294.3	$	278.5
Foreign	44.8		36.8		31.5
Income before income taxes	$	133.6	$	331.1	$	310.0

Components of Income Tax Provision


	Year Ended October 31,
(in millions)	2024		2023		2022
Current:
Federal	$	(53.7)	$	(50.6)	$	3.5
State	(22.8)		(25.0)		(6.0)
Foreign	(0.4)		(9.0)		(9.4)
Deferred:
Federal	19.3		(0.5)		(46.1)
State	6.7		5.3		(22.1)
Foreign	(1.3)		0.1		0.5
Income tax provision	$	(52.2)	$	(79.7)	$	(79.6)

Reconciliation of the U.S. Statutory Tax Rate to Annual Effective Tax Rate


	Year Ended October 31,
	2024		2023		2022
U.S. statutory rate	21.0	%	21.0	%	21.0	%
State and local income taxes, net of federal tax benefit	8.0		6.9		7.7
Federal and state tax credits	(2.6)		(1.0)		(1.5)
Impact of foreign operations	(6.4)		0.8		(0.1)
Changes in uncertain tax positions	(2.2)		0.1		(2.5)
Incremental tax benefit from share-based compensation awards	(1.6)		(0.7)		(0.5)
Energy efficiency incentives	(4.1)		(0.1)		(0.3)
Nondeductible executive compensation	3.4		1.4		1.4
Nontaxable RavenVolt contingent consideration	20.1		(3.9)		—
Other nondeductible expenses	2.1		0.6		0.3
Other, net	1.4		(1.0)		0.2
Effective tax rate	39.1	%	24.1	%	25.7	%

During 2024 and 2023, we had effective tax rates of 39.1% and 24.1%, respectively, resulting in a provision for tax of $52.2 million and $79.7 million, respectively. Our effective tax rate for 2024 was negatively impacted by a $95.7 million non-taxable change to increase the fair value of the contingent consideration related to the RavenVolt Acquisition, partially offset by a $7.3 million tax benefit for return to provision adjustments related to our non-U.S. operations, and a $5.5 million benefit related to energy efficiency incentives. Our effective tax rate for 2023 was positively impacted by a $45.6 million non-taxable change to decrease the fair value of the contingent consideration related to the RavenVolt Acquisition.

Components of Deferred Tax Assets and Liabilities


	As of October 31,
(in millions)	2024		2023
Deferred tax assets attributable to:
Self-insurance claims (net of recoverables)	$	106.3	$	95.2
Deferred and other compensation	29.0		31.4
Accounts receivable allowances	5.6		7.8
Settlement liabilities	3.4		4.5
Other accruals	4.0		4.3

State taxes	1.5		1.5
State net operating loss carryforwards	2.5		2.6
Tax credits	3.4		2.3
Unrecognized tax benefits	3.5		3.6

Operating lease liabilities	23.5		27.3
Gross deferred tax assets	182.7		180.5
Valuation allowance	(1.1)		(1.2)
Total deferred tax assets	181.6		179.3

Deferred tax liabilities attributable to:
Property, plant and equipment	(1.0)		(4.3)
Goodwill and other acquired intangibles	(194.8)		(200.0)
Right-of-use assets	(25.1)		(28.6)
Tax accounting method change	(6.3)		(11.7)
Other comprehensive income	(2.3)		(8.4)
Other	(12.3)		(11.3)
Total deferred tax liabilities	(241.8)		(264.3)

Net deferred tax liabilities	$	(60.2)	$	(85.0)

Net Operating Loss Carryforwards and Credits

State net operating loss carryforwards totaling $46.5 million at October 31, 2024, are being carried forward in several state jurisdictions where we are permitted to use net operating losses from prior periods to reduce future taxable income. These losses will expire between 2025 and 2044. Federal net operating loss carryforwards were fully utilized during 2023. Federal and state tax credit carryforwards totaling $4.1 million are available to reduce future cash taxes and will expire between 2025 and 2044.

The valuation allowance represents the amount of tax benefits related to state net operating loss carryforwards that are not likely to be realized. We believe the remaining deferred tax assets are more likely than not to be realizable based on estimates of future taxable income.

Changes to the Valuation Allowance


	Years Ended October 31,
(in millions)	2024		2023		2022
Valuation allowance at beginning of year	$	1.2	$	1.6	$	2.2
Other, net	(0.1)		(0.4)		(0.6)
Valuation allowance at end of year	$	1.1	$	1.2	$	1.6

Unrecognized Tax Benefits

At October 31, 2024, 2023, and 2022, there were $15.5 million, $20.7 million, and $22.0 million, respectively, of unrecognized tax benefits that if recognized in the future would impact our effective tax rate. We estimate that a decrease in unrecognized tax benefits of up to approximately $0.1 million is reasonably possible over the next 12 months due to lapses of applicable statutes of limitations. At October 31, 2024 and 2023, accrued interest and penalties were $1.3 million and $1.4 million, respectively. For interest and penalties, we recognized a $0.1 million benefit, a $0.7 million expense, and a $0.9 million benefit in 2024, 2023, and 2022, respectively.

Reconciliation of Total Unrecognized Tax Benefits


	Years Ended October 31,
(in millions)	2024		2023		2022
Balance at beginning of year	$	20.7	$	22.0	$	30.4

Additions for tax positions related to prior years	—		2.1		0.3
Reductions for tax positions related to prior years	(1.5)		(1.5)		(1.5)
Reductions for lapse of statute of limitations	(0.1)		(1.9)		(7.2)
Settlements	(3.6)		—		—
Balance at end of year	$	15.5	$	20.7	$	22.0

Jurisdictions

We conduct business in all 50 states, significantly in California, Texas, and New York, as well as in various foreign jurisdictions. Our most significant income tax jurisdiction is the United States. Due to expired statutes and closed audits, our federal income tax returns for years prior to fiscal 2020 are no longer subject to examination by the U.S. Internal Revenue Service. Generally, for the majority of state and foreign jurisdictions where we do business, periods prior to fiscal 2020 are no longer subject to examination. We are currently being examined by the City of New York City.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

PREFERRED AND COMMON STOCK - Narrative (Details) - USD ($) $ in Millions	Oct. 31, 2024	Dec. 13, 2023	Oct. 31, 2023
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized (in shares)	500,000		500,000
Preferred stock, shares issued (in shares)	0		0
Expansion of share repurchase program		$ 150.0
Remaining amount of authorized repurchases of common stock	$ 154.5

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 761.7	$ 741.2
Accumulated Amortization	(479.3)	(438.3)
Total	$ 282.4	$ 302.9
Intangible assets weighted average life	11 years	11 years
Customer contracts and relationships
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 748.2	$ 714.1
Accumulated Amortization	(467.2)	(413.2)
Total	281.0	300.9
Trademarks and trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	12.7	12.1
Accumulated Amortization	(11.7)	(11.1)
Total	1.0	1.0
Contract rights and other
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	0.7	15.0
Accumulated Amortization	(0.3)	(14.0)
Total	$ 0.5	$ 1.1

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Cash flows from operating activities
Net income	$ 81.4	$ 251.3	$ 230.4
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	106.6	120.7	112.4
Deferred income taxes	(24.7)	(4.9)	67.7
Share-based compensation expense	30.0	30.5	30.5
Provision for/(Recovery of) bad debt	8.8	3.0	(7.7)
Amortization of accumulated other comprehensive gain on interest rate swaps	0.0	0.0	(4.8)
Discount accretion on insurance claims	0.6	0.4	0.1
Gain on sale of assets	(0.6)	(0.1)	(0.8)
Income from unconsolidated affiliates	(6.5)	(3.9)	(2.4)
Distributions from unconsolidated affiliates	4.6	1.9	1.9
Change in fair value of contingent consideration	95.7	(45.6)	0.0
Changes in operating assets and liabilities, net of effects of acquisitions
Trade accounts receivable and costs incurred in excess of amounts billed	(32.6)	(152.7)	(143.8)
Prepaid expenses and other current assets	(40.4)	(7.4)	19.7
Right-of-use assets	12.7	1.8	14.7
Other noncurrent assets	(34.0)	33.8	(21.2)
Trade accounts payable and other accrued liabilities	(10.9)	(3.8)	(143.0)
Long-term lease liabilities	(7.3)	(5.7)	(15.2)
Insurance claims	54.3	5.0	(17.4)
Income taxes payable	(6.8)	15.1	(31.8)
Other noncurrent liabilities	(4.2)	3.8	(69.0)
Total adjustments	145.3	(8.0)	(210.0)
Net cash provided by operating activities	226.7	243.3	20.4
Cash flows from investing activities
Additions to property, plant and equipment	(59.4)	(52.6)	(50.8)
Proceeds from sale of assets	1.8	2.9	6.0
Investments in equity securities	0.0	(12.4)	(2.1)
Purchase of business, net of cash acquired	(114.3)	0.0	(194.6)
Net cash used in investing activities	(171.9)	(62.1)	(241.5)
Cash flows from financing activities
Taxes withheld from issuance of share-based compensation awards, net	(7.0)	(10.5)	(9.9)
Repurchases of common stock, including excise taxes	(56.1)	(138.1)	(97.5)
Dividends paid	(56.5)	(57.5)	(51.9)
Borrowings from debt	1,334.0	1,178.5	1,479.4
Repayment of borrowings from debt	(1,312.5)	(1,136.0)	(1,096.9)
Changes in book cash overdrafts	40.7	(20.3)	4.3
Financing of energy savings performance contracts	0.0	0.5	9.9
Repayment of finance lease obligations	(4.2)	(3.0)	(1.9)
Net cash (used in) provided by financing activities	(61.5)	(186.3)	235.5
Effect of exchange rate changes on cash and cash equivalents	1.8	1.6	(4.2)
Net (decrease) increase in cash and cash equivalents	(4.9)	(3.5)	10.2
Cash and cash equivalents at beginning of year	69.5	73.0	62.8
Cash and cash equivalents at end of year	64.6	69.5	73.0
Supplemental cash flow information
Income tax payments, net	83.2	69.1	46.4
Interest paid on credit facility	$ 98.5	$ 89.4	$ 28.9