Business Acquisition [Axis] Business Acquisition [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Other noncurrent liabilities Increase (Decrease) in Other Noncurrent Liabilities Recovery of bad debt Accounts Receivable, Credit Loss Expense (Reversal) Entity Address, Postal Zip Code Entity Address, Postal Zip Code 2025 Long-Term Debt, Maturity, Year Two Debt Instrument [Axis] Debt Instrument [Axis] Interest coverage ratio Debt Instrument, Covenant, Minimum Interest Coverage Ratio Debt Instrument, Covenant, Minimum Interest Coverage Ratio Dividends paid Payments of Ordinary Dividends, Common Stock Line of credit facility, borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Proceeds from sale of assets Proceeds from Sale of Other Assets, Investing Activities Debt facilities Debt Instrument, Fair Value Disclosure Assets held in funded deferred compensation plan Deferred Compensation Plan Assets Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Statistical Measurement [Domain] Statistical Measurement [Domain] Maturities of Long-term Debt Maturities of Long-Term Debt [Abstract] Costs incurred in excess of amounts billed Contract With Customer, Asset, Costs Incurred In Excess Of Amounts Billed, Current Contract With Customer, Asset, Costs Incurred In Excess Of Amounts Billed, Current Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Table] Capitalized contract price Contract With Customer, Asset, Increase (Decrease) For New Capitalized Costs Contract With Customer, Asset, Increase (Decrease) For New Capitalized Costs Additional paid-in capital Additional Paid in Capital, Common Stock Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations B&I Business & Industry Business And Industry [Member] Business and Industry [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Net income Net income Net income Net Income (Loss) Attributable to Parent Operating profit Segment Reporting Information, Profit (Loss) [Abstract] Anti-dilutive (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Accrued taxes — other than income Accrual for Taxes Other than Income Taxes, Current Schedule of Term Loan Maturities Schedule of Maturities of Long-Term Debt [Table Text Block] Amortization of accumulated other comprehensive gain on interest rate swaps Amortization of Deferred Hedge Gains Interest Rate Swap, Effective 11/1/2022 Interest Rate Swap, Effective 11/1/2022 [Member] Interest Rate Swap, Effective 11/1/2022 Insurance Policies [Domain] Insurance Policies [Domain] Insurance Policies [Domain] Equity Component [Domain] Equity Component [Domain] Scenario [Axis] Scenario [Axis] Investment, Name [Domain] Investment, Name [Domain] Amount of reasonably possible loss Loss Contingency, Estimate of Possible Loss Receivables Facility Receivables Facility [Member] Receivables Facility Standby letters of credit Standby Letters of Credit Standby Letters of Credit [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Revenues Segment Reporting Information, Revenue for Reportable Segment [Abstract] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Entity Address, State or Province Entity Address, State or Province Fair Value, Inputs, Level 1 Fair Value, Inputs, Level 1 [Member] Other comprehensive income Other Comprehensive Income (Loss), Net of Tax [Abstract] Schedule of Share-based Compensation Arrangement by Share-based Payment Award Award Type [Axis] Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Current portion of lease liabilities Operating Lease, Liability, Current Revenues associated with acquisition Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Guarantee obligation Guarantee Obligation The total amount of guaranteed energy savings. Interest rate cash flow hedge gain to be reclassified during next 12 months, net Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Floor on credit spread adjustment Debt Instrument, Basis Spread Floor Debt Instrument, Basis Spread Floor Long-term debt, net Long-term debt Long-Term Debt, Excluding Current Maturities Total liabilities Liabilities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Management Reimbursement Revenue by Segment and Remaining Performance Obligations Revenue from Contract with Customer [Policy Text Block] Medical and dental claim reserves Medical And Dental Self Insurance Program [Member] Medical and Dental Self Insurance Program [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Document Type Document Type Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Interest Rate Swap, Effective 7/18/2022 Interest Rate Swap, Effective 7/18/2022 [Member] Interest Rate Swap, Effective 7/18/2022 Segments [Axis] Segments [Axis] DEBT Debt Disclosure [Text Block] Technical Solutions Technical Solutions [Member] Technical Solutions [Member] Product and Service [Domain] Product and Service [Domain] Entity Shell Company Entity Shell Company Gross term loan Loans Payable, Noncurrent, Gross Loans Payable, Noncurrent, Gross Deferred income taxes Deferred Income Tax Expense (Benefit) Current portion of term loan Loans Payable, Current 2026 Long-Term Debt, Maturity, Year Three Changes in book cash overdrafts Proceeds from (Repayments of) Bank Overdrafts Other investments Other Investments Insurance claim reserves, excluding medical and dental All Other Claim Types, Excluding Medical And Dental Self Insurance Program [Member] All Other Claim Types, Excluding Medical And Dental Self Insurance Program Secured net leverage ratio Debt Instrument, Covenant, Maximum Secured Net Leverage Ratio Debt Instrument, Covenant, Maximum Secured Net Leverage Ratio Consolidation Items [Domain] Consolidation Items [Domain] Aviation Aviation [Member] Aviation [Member] Schedule of Contract with Customer, Asset and Liability Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Document Period End Date Document Period End Date Insurance Policies [Axis] Insurance Policies [Axis] Insurance Policies [Axis] Total assets Assets Insurance policy coverage, property damage Property Damage, Policy Limit Represents the policy limit provided by the insurance program for property damage risks. Debt Disclosure [Abstract] Debt Disclosure [Abstract] Net income per common share Earnings Per Share [Abstract] Interest Rate Swap, Effective 5/4/2022 Interest Rate Swap, Effective 5/4/2022 [Member] Interest Rate Swap, Effective 5/4/2022 Facility Services Facility Services [Member] Facility Services [Member] Stock issued under share-based compensation plans Dividend, Share-Based Payment Arrangement, Shares Performance shares Performance Shares [Member] Income tax benefit (provision) Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Stockholders' Equity Note [Abstract] Accrued compensation Employee-related Liabilities, Current Line of Credit Line of Credit [Member] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Stockholders’ Equity Stockholders' Equity Attributable to Parent [Abstract] Segments [Domain] Segments [Domain] NET INCOME PER COMMON SHARE Earnings Per Share [Text Block] Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Award Type [Domain] Award Type [Domain] Cash purchase price Payments to Acquire Businesses, Gross Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis Fair Value, by Balance Sheet Grouping [Table Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Foreign currency translation and other Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Parent Entity Registrant Name Entity Registrant Name Total adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Revolving line of credit Long-Term Line of Credit, Noncurrent Insurance [Abstract] 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[Policy Text Block] Statement [Table] Statement [Table] Document Quarterly Report Document Quarterly Report Current assets Assets, Current [Abstract] Long-term lease liabilities Operating Lease, Liability, Noncurrent Statistical Measurement [Axis] Statistical Measurement [Axis] Retained earnings Retained Earnings (Accumulated Deficit) Disposal Group Name [Axis] Disposal Group Name [Axis] Equity Components [Axis] Equity Components [Axis] Scenario [Domain] Scenario [Domain] Self insurance retention amount per-claim, medical plan Self Insured Retention, Amount Per Participant, Per Year, For Certain Employee Medical And Dental Programs Self Insured Retention, Amount Per Participant, Per Year, For Certain Employee Medical And Dental Programs Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Gross term loan Loans Payable, Current, Gross Loans Payable, Current, Gross Schedule of Other Liabilities [Line Items] Schedule Of Other Liabilities [Line Items] Schedule of Other Liabilities [Line Items] Number of technical solutions segments Number Of Technical Solution Segments Number Of Technical Solution Segments Document Fiscal Year Focus Document Fiscal Year Focus Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Statement [Line Items] Statement [Line Items] Repayment of finance lease obligations Finance Lease, Principal Payments Sale of customer contracts for clinical engineering services, consideration Disposal Group, Including Discontinued Operation, Consideration Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Selling, general and administrative expenses Selling, General and Administrative Expense Loss Contingencies [Table] Loss Contingencies [Table] Change in fair value in contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Instruments Used to Collateralize Insurance Obligations by Type [Axis] Instruments Used to Collateralize Insurance Obligations by Type [Axis] Instruments Used to Collateralize Insurance Obligations by Type [Axis] Right-of-use assets Operating Lease, Right-of-Use Asset Repurchase of common stock Stock Repurchased During Period, Value Accumulated Other Comprehensive Loss, Net of Taxes AOCI Attributable to Parent [Member] Interest Rate Swap, Effective 2/9/2022 Interest Rate Swap, Effective 2/9/2022 [Member] Interest Rate Swap, Effective 2/9/2022 Instruments used to collateralize insurance obligations Instruments Used To Collateralize Insurance Obligations Instruments Used To Collateralize Insurance Obligations Document Transition Report Document Transition Report Local Phone Number Local Phone Number Operating profit Operating profit Operating Income (Loss) Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Litigation Status [Axis] Litigation Status [Axis] Preferred equity investment Equity Securities without Readily Determinable Fair Value, Amount Effect of dilutive securities Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Total assets acquired, excluding goodwill and intangibles Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Tangible Assets Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Tangible Assets Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Capitalized commissions Contract With Customer, Asset, Capitalized Commissions Contract With Customer, Asset, Capitalized Commissions Goodwill Goodwill Repurchase of common stock (in shares) Shares repurchased under share repurchase program (in shares) Stock Repurchased During Period, Shares Unamortized deferred financing costs Debt Issuance Costs, Current, Net Credit Facility Credit Facility [Member] Credit Facility [Member] Adjustments to reconcile net income to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustment for tax deductions for energy efficient government buildings, included in Technical Solutions Energy Efficient Government Buildings Tax Credits, Amount Energy Efficient Government Buildings Tax Credits, Amount Income tax provision Provisions for taxes Income Tax Expense (Benefit) Deferred income tax liability, net Deferred Income Tax Liabilities, Net Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Income Statement [Abstract] Income Statement [Abstract] Additional Paid-in Capital Additional 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respectively Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Schedule of Anti-Dilutive Outstanding Stock Awards Issued Under Share-Based Compensation Plans Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Operating Segments Operating Segments [Member] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Customer Contracts for Healthcare Technology Management Customer Contracts For Healthcare Technology Management [Member] Customer Contracts for Clinical Engineering Services Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Term Loan Loans Payable [Member] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Current liabilities Liabilities, Current [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Building & Energy Solutions Building And Energy Solutions [Member] Building & Energy Solutions [Member] Borrowings from debt Proceeds from Issuance of Long-Term Debt Common stock, shares issued (in shares) Common Stock, Shares, Issued Letters Of Credit [Line Items] Letters Of Credit [Line Items] Letters Of Credit [Line Items] Contract liabilities, balance at beginning of period Contract liabilities, balance at end of period Contract with Customer, Liability, Current Insurance claims Self Insurance Reserve, Current Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Total net leverage ratio Debt Instrument, Covenant, Maximum Total Net Leverage Ratio Debt Instrument, Covenant, Maximum Total Net Leverage Ratio Amendment Flag Amendment Flag Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Debt instrument, face amount Debt Instrument, Face Amount Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table] Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Schedule of Financial Information by Reportable Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Other noncurrent assets Other Assets, Noncurrent Management Reimbursement Revenue Management Reimbursement Revenue [Member] Management Reimbursement Revenue [Member] Depreciation and amortization Depreciation, Depletion and Amortization Current portion of debt Long-Term Debt, Current Maturities [Abstract] Liability for Claims and Claims Adjustment Expense [Line Items] Liability for Claims and Claims Adjustment Expense [Line Items] Insurance policy coverage, general and automobile liability losses Insurance Policy Coverage, General Liability And Automobile Liability Losses Represents commercial insurance umbrella policies that cover general liability and automobile liability losses above primary limits. Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Energy Savings Contracts Energy Savings Contracts [Member] Energy Savings Contracts [Member] Income tax benefit for change in tax reserves Effective Income Tax Rate Reconciliation, Change In Tax Reserves, Amount Effective Income Tax Rate Reconciliation, Change In Tax Reserves, Amount Schedule of Interest Rate Swap Information Schedule of Interest Rate Derivatives [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Property, plant and equipment, net of accumulated depreciation of $314.3 and $296.9 at April 30, 2023 and October 31, 2022, respectively Property, Plant and Equipment, Net Repayment of borrowings from debt Repayments of Long-Term Debt Other noncurrent assets Increase (Decrease) in Other Noncurrent Assets Maximum contingent consideration payable in future years Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Gain on sale of government services business Gain on sale of assets Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal Trade accounts receivable, allowance Accounts Receivable, Allowance for Credit Loss, Current Insurance claim reserves Self Insurance Reserve Common stock, shares authorized (in shares) Common Stock, Shares Authorized Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Income taxes payable Accrued Income Taxes, Current Maximum Maximum [Member] Schedule of Revenue from External Customers by Major Service Lines and Segments Revenue from External Customers by Products and Services [Table Text Block] Accumulated other comprehensive loss, net of taxes Accumulated Other Comprehensive Income (Loss), Net of Tax RavenVolt RavenVolt, Inc. [Member] RavenVolt, Inc. Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Insurance deposits Restricted Cash and Cash Equivalents, Noncurrent Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total current assets Assets, Current Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Balance, beginning of period (in shares) Balance, end of period (in shares) Shares, Outstanding Measurement Frequency [Domain] Measurement Frequency [Domain] COMMON STOCK Stockholders' Equity Note Disclosure [Text Block] Common stock, dividends (in USD per share) Common Stock, Dividends, Per Share, Declared Other intangible assets, net of accumulated amortization of $499.6 and $459.8 at April 30, 2023 and October 31, 2022, respectively Finite-Lived Intangible Assets, Net Line of Credit Facility [Table] Line of Credit Facility [Table] Remaining performance obligation period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Expansion of of authorized repurchase amount of common stock Stock Repurchase Program, Increase (Decrease) In Authorized Amount Stock Repurchase Program, Increase (Decrease) In Authorized Amount Surety bonds and surety-backed letters of credit Surety Bonds And Surety-Backed Letters Of Credit Surety Bonds And Other Instruments Title of 12(b) Security Title of 12(b) Security BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Airline Services Airline Services [Member] Airline Services [Member] Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Deferred payroll tax Social Security Tax, Employer, Deferral, CARES Act Social Security Tax, Employer, Deferral, CARES Act Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Impairment loss recorded on costs capitalized Capitalized Contract Cost, Impairment Loss Stock issued under employee stock purchase and share-based compensation plans (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Recognition of deferred revenue Contract With Customer, Liability, Including New Contract Revenue Recognized Contract With Customer, Liability, Including New Contract Revenue Recognized LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] 2023 Long-Term Debt, Maturity, Remainder of Fiscal Year Gain from cash flow hedges recorded in accumulated other comprehensive loss, net of tax OCI, before Reclassifications, before Tax, Attributable to Parent Weighted-average common and common equivalent shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trade accounts payable Accounts Payable, Current Momentum Maybin Support Services Limited, Momentum Support Limited (UK) And Momentum Property Support Services Limited [Member] Maybin Support Services Limited, Momentum Support Limited (UK) and Momentum Property Support Services Limited Long-term lease liabilities Increase (Decrease) In Lease Liabilities, Noncurrent Increase (Decrease) In Lease Liabilities, Noncurrent 2027 Long-Term Debt, Maturity, Year Four THE COMPANY AND NATURE OF OPERATIONS Nature of Operations [Text Block] Entity Filer Category Entity Filer Category Basic (in shares) Weighted-average common and common equivalent shares outstanding — Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Operating profit (loss) associated with acquisition Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Loss contingency accrual Loss Contingency Accrual Government Services Government Services [Member] Government Services [Member] Change in case reserves plus IBNR Claims — prior years Prior Year Claims and Claims Adjustment Expense Commitments and contingencies Commitments and Contingencies Self insurance retention amount per-claim Self Insured Retention, Amount Per Occurrence Self Insured Retention, Amount Per Occurrence Security Exchange Name Security Exchange Name Interest rate swap liabilities Interest Rate Derivative Liabilities, at Fair Value Loss/(Gain) on sale of assets Gain (Loss) on Disposition of Assets Notional Amount Derivative, Notional Amount Preferred stock, $0.01 par value; 500,000 shares authorized; none issued Preferred Stock, Value, Issued Education Education [Member] Education [Member] Standby letters of credit Letters of Credit Outstanding, Amount Segment Reconciling Items Segment Reconciling Items [Member] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Income taxes payable, net Increase (Decrease) in Income Taxes Payable Interest rate swap assets Interest Rate Derivative Assets, at Fair Value Current portion of debt, net Current portion of debt Debt, Current Cover page. Cover [Abstract] Pending Litigation Pending Litigation [Member] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Interest Rate Swap, Effective 2/25/2022 Interest Rate Swap, Effective 2/25/2022 [Member] Interest Rate Swap, Effective 2/25/2022 Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Secured Overnight Financing Rate (SOFR) REVENUES Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Instruments Used to Collateralize Insurance Obligations, Type [Domain] Instruments Used to Collateralize Insurance Obligations, Type [Domain] Instruments Used to Collateralize Insurance Obligations, Type [Domain] Forecast Forecast [Member] Taxes withheld from issuance of share-based compensation awards, net Payment, Tax Withholding, Share-Based Payment Arrangement Total liabilities and stockholders’ equity Liabilities and Equity Line of credit facility, term Debt Instrument, Term Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Restricted insurance deposits Deposits [Member] Remaining amount of authorized repurchases of common stock Stock Repurchase Program, Remaining Authorized Repurchase Amount Effect of dilutive securities (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Trade accounts receivable and costs incurred in excess of amounts billed Increase (Decrease) in Receivables Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Disposal Group Name [Domain] Disposal Group Name [Domain] Purchase of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Goodwill tax deductible amount Business Acquisition, Goodwill, Expected Tax Deductible Amount Current Fiscal Year End Date Current Fiscal Year End Date Diluted (in USD per share) Earnings Per Share, Diluted Privately Held Company Privately Held Company [Member] Privately Held Company Share-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Consolidation Items [Axis] Consolidation Items [Axis] Right-of-use assets Increase (Decrease) In Operating Lease Right-Of-Use Asset Increase (Decrease) In Operating Lease Right-Of-Use Asset Total current liabilities Liabilities, Current Financing of energy savings performance contracts Proceeds from Construction Loans Payable Other current assets Other Assets, Current Noncurrent income taxes payable Accrued Income Taxes, Noncurrent Amount of remaining performance obligation Revenue, Remaining Performance Obligation, Amount Trade accounts receivable, net of allowances of $24.2 and $22.6 at April 30, 2023 and October 31, 2022, respectively Accounts and Other Receivables, Net, Current Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One Parking Parking [Member] Long-term debt Long-Term Debt, Excluding Current Maturities [Abstract] Product and Service [Axis] Product and Service [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Interest expense Interest Expense Credit Facility [Axis] Credit Facility [Axis] Insurance recoverables Estimated Insurance Recoveries Schedule of Components of Debt Schedule of Long-Term Debt Instruments [Table Text Block] Primary policy limit Workers Compensation, General Liability, And Other Insurable Risks, Insurance Policy Limit Represents the policy limit provided by the insurance program for workers' compensation, general liability, and other insurable risks. Entity Tax Identification Number Entity Tax Identification Number Noncurrent insurance claims Self Insurance Reserve, Noncurrent Fixed Interest Rate Derivative, Fixed Interest Rate Schedule of Insurance Related Balances and Activity Schedule Of Insurance Related Balances And Activity [Table Text Block] Schedule Of Insurance Related Balances And Activity [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Investments in equity securities Payments to Acquire Equity Securities, FV-NI Costs incurred in excess of amounts billed Contract with Customer, Asset, after Allowance for Credit Loss, Current Surety bonds and surety-backed letters of credit Surety Bonds And Surety-Backed Letters Of Credit [Member] Surety Bonds And Surety-Backed Letters Of Credit Additional contract liabilities Contract With Customer, Liability, Increase (Decrease) For Additional Contract Liabilities Contract With Customer, Liability, Increase (Decrease) For Additional Contract Liabilities Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Number of industry groups Number Of Industry Groups Number Of Industry Groups Dividends Dividends [Abstract] Entity Central Index Key Entity Central Index Key Measurement Frequency [Axis] Measurement Frequency [Axis] Consideration paid Business Combination, Consideration Transferred Insurance claims Increase (Decrease) in Self Insurance Reserve Other accrued liabilities Other Accrued Liabilities, Current City Area Code City Area Code ASSETS Assets [Abstract] M&D Manufacturing & Distribution Manufacturing And Distribution [Member] Unamortized deferred financing costs Debt Issuance Costs, Noncurrent, Net Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Unbilled trade receivables Contract With Customer, Asset, Unbilled Trade Receivables, Current Contract With Customer, Asset, Unbilled Trade Receivables, Current Contract with Customer, Liabilities [Roll Forward] Contract with Customer, Liabilities [Roll Forward] Contract with Customer, Liabilities [Roll Forward] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Interest Rate Swap, Effective 7/7/2022 Interest Rate Swap, Effective 7/7/2022 [Member] Interest Rate Swap, Effective 7/7/2022 Percentage of remaining performance obligation Revenue, Remaining Performance Obligation, Percentage Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] 2024 Long-Term Debt, Maturity, Year One Share-based compensation expense Share-Based Payment Arrangement, Noncash Expense Variable Rate [Axis] Variable Rate [Axis] Other noncurrent liabilities Other Liabilities, Noncurrent Income from unconsolidated affiliates Income from unconsolidated affiliates Income from unconsolidated affiliates Income (Loss) from Equity Method Investments Total noncurrent portion of term loan Loans Payable, Noncurrent Disposal Group Classification [Domain] Disposal Group Classification [Domain] Additions to property, plant and equipment Payments to Acquire Property, Plant, and Equipment Tax to be reclassified during the next 12 months Interest Rate Cash Flow Hedge Gain (Loss) To Be Reclassified During Next 12 Months, Tax Interest Rate Cash Flow Hedge Gain (Loss) To Be Reclassified During Next 12 Months, Tax Schedule of Basic and Diluted Net Income Per Common Share Calculations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]