Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Intangible assets, accumulated amortization Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Range [Domain] Statistical Measurement [Domain] Payments on long-term borrowings Payments on long-term borrowings Payments on long-term borrowings Properties and equipment Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment Business Combination [Abstract] Business Combination [Abstract] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Accrued liabilities Business Combination, Recognized Liability Assumed, Liability, Current Non-U.S. Benefit Plan Foreign Plan [Member] Total intangible assets, gross carrying value Intangible Assets, Gross (Excluding Goodwill) Indefinite-lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Asset Class [Axis] Asset Class [Axis] Entity File Number Entity File Number Capital in Excess of Par Value Additional Paid-in Capital [Member] Interest Rate Swap Interest Rate Swap [Member] Basic earnings per share: Earnings Per Share, Basic [Abstract] Recent Accounting Pronouncements and Accounting Changes New Accounting Pronouncements, Policy [Policy Text Block] April 2025 Repurchase Program April 2025 Repurchase Program [Member] April 2025 Repurchase Program Operating Activities [Axis] Operating Activities [Axis] Erie County Firefighter Plaintiffs Erie County Firefighter Plaintiffs [Member] Erie County Firefighter Plaintiffs [Member] Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Guarantor obligation, maximum potential cash payments Guarantor Obligations, Maximum Exposure, Undiscounted Environmental Solutions Environmental Solutions [Member] Environmental solutions. Share-Based Payment Arrangement Share-Based Payment Arrangement [Member] Goodwill [Line Items] Goodwill [Line Items] Other Expenses Other Expenses Measurement Basis [Axis] Measurement Basis [Axis] Earnings per share (usd per share) Earnings Per Share, Basic Schedule of Gross Borrowings and Gross Payments Schedule of Line of Credit Facilities [Table Text Block] SettlementAgreementVoid SettlementAgreementVoid [Member] Settlement Agreement Void Revenue Recognition Revenue from Contract with Customer [Text Block] Debt Securities, Unrealized Gain (Loss) Debt Securities, Unrealized Gain (Loss) Excess tax benefit from stock compensation activity Share-Based Payment Arrangement, Exercise of Option, Tax Benefit Loss from discontinued operations and disposal, net of tax (usd per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Continuing Operations Continuing Operations [Member] Current Income Tax Expense (Benefit) Current Income Tax Expense (Benefit) Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Affiliated Entity Affiliated Entity [Member] Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Parts Parts [Member] Parts. Interest rate swap, notional amount Derivative Asset, Notional Amount Employee Stock Option Share-Based Payment Arrangement, Option [Member] Foreign currency translation Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Foreign Currency Adjustment Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Foreign Currency Adjustment Debt and Equity Securities, Realized Gain (Loss) Debt and Equity Securities, Realized Gain (Loss) Non-Recurring Discrete Tax Benefit Non-Recurring Discrete Tax Benefit Non-Recurring Discrete Tax Benefit Gain contingency, unrecorded amount Litigation Settlement, Amount Awarded from Other Party Cash dividends declared Dividends, Common Stock, Cash Total stockholders’ equity Beginning Balance Ending Balance Stockholders' Equity Attributable to Parent Equity, Attributable to Parent Measurement Frequency [Axis] Measurement Frequency [Axis] Other comprehensive loss before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Common stock, shares authorized Common Stock, Shares Authorized Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Current assets: Assets, Current [Abstract] Liabilities and Equity, Total Liabilities and Equity Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Actuarial Losses Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Acquisitions, including measurement period adjustments Standard and Extended Product Warranty Accrual, Increase from Business Combination LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Description of payment terms Revenue, Performance Obligation, Description of Payment Terms Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Cover [Abstract] Cover [Abstract] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Amounts reclassified from accumulated other comprehensive loss Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Maximum Maximum [Member] Finite-lived intangible asset, useful life Finite-Lived Intangible Asset, Useful Life Segment, Expenditure, Addition to Long-Lived Assets Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Accounting Policies [Abstract] Share Repurchase Program, Remaining Authorized, Number of Shares Share Repurchase Program, Remaining Authorized, Number of Shares Net Carrying Value Finite-Lived Intangible Assets, Net Debt Instrument [Line Items] Debt Instrument [Line Items] Treasury Stock, Common Treasury Stock, Common [Member] Maximum covenant leverage ratio Line Of Credit Facility Covenant Terms Leverage Ratio Maximum Line Of Credit Facility Covenant Terms Leverage Ratio Maximum Dividends Payable [Line Items] Dividends Payable [Line Items] Number of claims dismissed (case) Loss Contingency, Claims Dismissed, Number Retirement Benefits [Abstract] Retirement Benefits [Abstract] Schedule of Depreciation and Amortization Expense by Segment Schedule of Depreciation and Amortization Expense by Segment [Table Text Block] Schedule of Depreciation and Amortization Expense by Segment Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Acquisitions Business Combination [Text Block] Schedule of Depreciation and Amortization Expense by Segment [Table] Schedule of Depreciation and Amortization Expense by Segment [Table] Schedule of Depreciation and Amortization Expense by Segment Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Acquisition and integration-related expenses, net Acquisition and integration related expenses Acquisition and integration related expenses Proceeds from early terminated 2017 swap Proceeds from early termination of interest rate swap The cash inflow from early termination of interest rate swap, designated as a cash flow hedge. Schedule of Carrying Amounts and Estimated Fair Values of Long-Term Borrowings Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Other Liabilities, Noncurrent Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating Segments Operating Segments [Member] Lackawanna Firefighter Plaintiffs Lackawanna Firefighter Plaintiffs [Member] Lackawanna Firefighter Plaintiffs [Member] Long-term Debt, Current Maturities Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Employer contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Guarantor obligation, single year maximum cash payments Guarantor Obligations, Maximum Exposure, Undiscounted, Annual Amount Guarantor Obligations, Maximum Exposure, Undiscounted, Annual Amount Line of Credit Facility [Table] Line of Credit Facility [Table] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Reclassification out of Accumulated Other Comprehensive Loss [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Tax Benefit from worthless stock deduction, Interest Tax Benefit from worthless stock deduction, Interest Tax Benefit from worthless stock deduction, Interest Disposal Group Name [Domain] Disposal Group Name [Domain] Settlement offer per eligible plaintiff who has not already filed a lawsuit Settlement Offer Per Eligible Plaintiff Who Has Not Already Filed A Lawsuit Settlement offer amount to each firefighter who has not filed a case and is eligible to be part of the settlement. Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Letter of Credit Letter of Credit [Member] Secured Debt Secured Debt [Member] Operating Lease, Liability, Current Operating Lease, Liability, Current Roll-Forward of Fair Value of Recurring Level 3 Fair Value Measurements Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Philadelphia Firefighter Plaintiffs Philadelphia Firefighter Plaintiffs [Member] Philadelphia firefighter plaintiffs. Deferred Income Tax Liabilities, Net Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus Loss from discontinued operations and disposal, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Payments Standard and Extended Product Warranty Accrual, Decrease for Payments Earnings from continuing operations (usd per share) Income (Loss) from Continuing Operations, Per Basic Share Litigation Case [Domain] Litigation Case [Domain] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss) Award Type [Axis] Award Type [Axis] Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Currency Translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Long-term borrowings Long-Term Debt Total assets Assets Assets Estimated amortization of intangibles, 2024 Finite-Lived Intangible Asset, Expected Amortization, Year One Trading Symbol Trading Symbol Acquisitions Business Combination [Policy Text Block] Provisions to expense Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Regulatory Liability [Axis] Regulatory Liability [Axis] Geographical [Domain] Geographical [Domain] Line of credit facility, covenants holiday, permitted acquisition consideration Line of Credit Facility, Covenants Holiday, Permitted Acquisition Consideration Permitted acquisition consideration amount which would allow for a temporary covenant holiday period. Superior Court of New Jersey, Union County Superior Court of New Jersey, Union County [Member] Superior Court of New Jersey, Union County [Member] Entity Address, City or Town Entity Address, City or Town Short-term Debt, Type [Domain] Short-Term Debt, Type [Domain] Operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Finance Lease, Weighted Average Discount Rate, Percent Finance Lease, Weighted Average Discount Rate, Percent Deferred tax payments under the CARES Act Deferred Tax Payments Under CARES Act Deferred federal income tax payments under the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act"). Warning systems Warning systems [Member] Warning systems. Massachusetts Firefighter Plaintiffs Massachusetts Firefighter Plaintiffs [Member] Massachusetts Firefighter Plaintiffs [Member] MRL MRL [Member] Mark Rite Lines Equipment Company, Inc. Effects of foreign exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Inventories Inventory Disclosure [Text Block] Statement of Income Location, Balance [Domain] Statement of Income Location, Balance [Domain] Total consideration Business Combination, Consideration Transferred Estimated amortization of intangibles, 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Four Entity Emerging Growth Company Entity Emerging Growth Company Cash dividends declared per common share (usd per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Pennsylvania Firefighter Plaintiffs Pennsylvania Firefighter Plaintiffs [Member] Pennsylvania firefighter plaintiffs. Finance Lease, Weighted Average Remaining Lease Term Finance Lease, Weighted Average Remaining Lease Term Level 2 Fair Value, Inputs, Level 2 [Member] Indefinite-lived intangible assets Indefinite-Lived Intangible Assets (Excluding Goodwill) Business Combination [Domain] Business Combination [Domain] InterestRateSwapMember2023 Interest Rate Swap 2023 [Member] Interest Rate Swap 2023 Dismissed Dismissed [Member] Dismissed [Member] Rental equipment, net of accumulated depreciation of $71.4 and $69.2, respectively DepreciableRentalEquipmentAvailableforOperating Leases, net Depreciable Rental Equipment Available for Operating Leases, net Number of plaintiffs cases dismissed (plaintiff) Loss Contingency Number Of Plaintiffs Dismissed Loss contingency number of plaintiffs, dismissed. Number of cases of plaintiff's claims (case) Loss Contingency, Claims Settled and Dismissed, Number Florida Firefighters Plaintiffs Florida Firefighters Plaintiffs [Member] Florida Firefighters Plaintiffs [Member] Number of claimants settled (plaintiff) Loss Contingency, Pending Claims, Number Net Sales Disaggregated By Geographic Region and Major Product Line Disaggregation of Revenue [Table Text Block] Operating lease liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Operating Lease Liability Present value of lessee's discounted obligation for lease payments from operating leases acquired at the acquisition date. U.S. UNITED STATES Non-US lines of credit Non Us Lines Of Credit [Member] Non-US lines of credit. Schedule of Product Warranty Liability Schedule of Product Warranty Liability [Table Text Block] Schedule of Capital Expenditures by Segment [Table] Schedule of Capital Expenditures by Segment [Table] Schedule of Capital Expenditures by Segment Retained Earnings Retained Earnings [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Cash and cash equivalents at beginning of year Cash and cash equivalents at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Derivative Asset Derivative Asset Income tax expense Income Tax Expense (Benefit) Mega Corp Mega Corp [Member] Mega Corp Base rate borrowings margin range Debt Instrument, Basis Spread on Variable Rate Loss from discontinued operations and disposal, net of tax (usd per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Amended 2016 Credit Agreement Amended 2016 Credit Agreement [Member] Amended 2016 Credit Agreement [Member] Taxes Payable, Current Taxes Payable, Current Pittsburgh Firefighter Plaintiffs Pittsburgh Firefighter Plaintiffs [Member] Pittsburgh Firefighter Plaintiffs [Member] Intangible assets, net of accumulated amortization of $110.3 and $104.2, respectively Total intangible assets, net Intangible Assets, Net (Excluding Goodwill) Remaining Remaining [Member] Remaining [Member] Product and Service [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Change in unrealized gain or loss on interest rate swaps, net of income tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Stock option exercises and other Stock Issued During Period, Value, Stock Option Exercises And Other Stock Issued During Period, Value, Stock Option Exercises And Other Earnings from continuing operations (usd per share) Income (Loss) from Continuing Operations, Per Diluted Share Business Combination [Table] Business Combination [Table] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Plaintiffs [Axis] Plaintiffs [Axis] Plaintiffs [Axis] Hog Hog [Member] Hog Supreme Court of State of New York, New York County Supreme Court of State of New York, New York County [Member] Supreme Court of State of New York, New York County [Member] Business Combination, Recognized Asset Acquired and Liability Assumed Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block] Goodwill Goodwill, Acquired During Period Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Proceeds from stock-based compensation activity Proceeds from Stock Options Exercised Tax expense on unrealized net gain on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax, Parent City Area Code City Area Code Payments for acquisition-related activity, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Class of Treasury Stock [Table] Class of Treasury Stock [Table] Settlements of contingent consideration liabilities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Gross borrowings Proceeds from Long-Term Lines of Credit Lackawanna County Pennsylvania [Member] Lackawanna County Pennsylvania [Member] Lackawanna County Pennsylvania [Member] Investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Amortization of interest rate swap settlement gain Amortization of interest rate swap settlement gain Amortization of interest rate swap settlement gain Stock-based payments: Shares Granted or Issued, Share-Based Payment Arrangement [Abstract] Amortization of actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Subsequent Event Subsequent Event [Member] Selling, engineering, general and administrative expenses Selling, General and Administrative Expenses [Member] Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Estimated amortization of intangibles, remainder of 2023 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Treasury Stock, Value, Acquired in Subsequent Period, Cost Method Treasury Stock, Value, Acquired in Subsequent Period, Cost Method Treasury Stock, Value, Acquired in Subsequent Period, Cost Method Outside Chicago Firefighter Plaintiffs Outside Chicago Firefighter Plaintiffs [Member] Outside Chicago firefighter plaintiffs. Equity Components [Axis] Equity Components [Axis] Number of reportable segments Number of Reportable Segments Other Other Disposal Groups [Member] Other Disposal Groups [Member] Inventories Business Combination, Recognized Asset Acquired, Inventory, Current Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] Proceeds from Hedge, Financing Activities Proceeds from Hedge, Financing Activities Accounts receivable Business Combination, Recognized Asset Acquired, Receivable, Current 2025 Credit Agreement 2025 Credit Agreement [Member] 2025 Credit Agreement Rental Equipment, Accumulated Depreciation DepreciableRentalEquipmentAvailableforOperatingLeasesAccumulatedDepreciation Accumulated Depreciation on Rental Equipment Available for Operating Leases Entity Address, State or Province Entity Address, State or Province Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Excess tax benefit from completion of tax audit Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority Related Party Related and Nonrelated Parties [Domain] Liabilities, Current, Total Liabilities, Current Derivative Instrument [Axis] Derivative Instrument [Axis] Cash dividends paid to stockholders Cash dividends paid to stockholders Payments of Ordinary Dividends, Common Stock Capital in excess of par value Additional Paid in Capital, Common Stock Rental income Rental income [Member] Rental income. Net cash used for investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation and Consolidation Basis of Accounting, Policy [Policy Text Block] Lender Name [Axis] Lender Name [Axis] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Deferred Other Tax Expense (Benefit) Deferred Other Tax Expense (Benefit) Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Treasury Stock, Shares, Acquired in Subsequent Period Treasury Stock, Shares, Acquired in Subsequent Period Treasury Stock, Shares, Acquired in Subsequent Period Distribution Rights Distribution Rights [Member] Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Accrued Treasury Shares Cost Accrued Treasury Shares Cost Accrued Treasury Shares Cost Federal Court, Eastern District of Pennsylvania Federal Court, Eastern District of Pennsylvania [Member] Federal Court, Eastern District of Pennsylvania [Member] Reported Value Measurement [Member] Reported Value Measurement [Member] Percentage of claimants agreed for settlement Percentage Of Claimants Agreed For Settlement Percentage of claimants agreed for settlement. Equity [Abstract] Equity [Abstract] 2022 Credit Agreement 2022 Credit Agreement [Member] 2022 Credit Agreement Other Comprehensive Income Location [Domain] Other Comprehensive Income Location [Domain] Segment Information Segment Reporting Disclosure [Text Block] New York City Firefighter Plaintiffs New York City Firefighter Plaintiffs [Member] New York City Firefighter Plaintiffs [Member] Goodwill [Table] Goodwill [Table] Recognized Tax Benefit from worhtless stock deduction, Net Recognized Tax Benefit from worthless stock deduction, Net Recognized Tax Benefit from worthless stock deduction, Net 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] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Long-Term Debt and Lease Obligation, Current Long-Term Debt and Lease Obligation, Current Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Summary of Components of Net Periodic Pension (Benefit) Expense Schedule of Net Benefit Costs [Table Text Block] Estimated fair value of additional consideration Estimated fair value of additional consideration (a) Business Combination, Contingent Consideration, Liability Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Guaranteed percentage of outstanding voting capital stock Guarantee Obligations, Maximum Exposure, Percentage of Outstanding Voting Capital Stock Percentage of outstanding voting capital stock provided as a guarantee of obligations. Leases, Lessee Lessee, Leases [Policy Text Block] Amortization expense Amortization of Intangible Assets Selling, engineering, general and administrative expenses Selling, General and Administrative Expense Deferred tax assets Deferred Income Tax Assets, Net Stock Repurchased During Period, Value Stock Repurchased During Period, Value Line of credit facility, permitted dividends and stock repurchases Line of Credit Facility, Covenants, Permitted Dividends and Stock Repurchases Amount of dividends and stock repurchases the Company is permitted to fund if its leverage ratio is greater than what is defined in the covenant. Changes in Each Component of Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Trackless Trackless [Member] Trackless Depreciation and amortization Depreciation, Depletion and Amortization Payments to Acquire Buildings Payments to Acquire Buildings Schedule of Other Significant Noncash Transactions Other Significant Noncash Transactions [Table] Entity Central Index Key Entity Central Index Key Rental equipment Business combination recognized identifiable assets acquired and liabilities assumed rental equipment Business combination recognized identifiable assets acquired and liabilities assumed rental equipment Settlement Agreement Settlement Agreement [Member] Settlement agreement. Revenues Revenues Settlement offer per eligible plaintiff who has already filed a lawsuit Settlement Offer Per Eligible Plaintiff Who Has Already Filed A Lawsuit Settlement offer amount to each firefighter who has already filed a lawsuit and is eligible to be part of the settlement. Purchase Options, Land Purchase Options, Land Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Revolving Credit Facility Revolving Credit Facility [Member] Contingent consideration liability Contingent consideration liability, beginning balance Contingent consideration liability, ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Debt settlement charges Deferred Debt Issuance Cost, Writeoff Defined Benefit Plan [Table] Defined Benefit Plan [Table] Tax Benefit from Remeasurement of Deferred Taxes for Changes in State Tax Apportionment TaxBenefitFromRemeasurementOfDeferredTaxesForChangesinStateTaxApportionment Tax Benefit From Remeasurement Of Deferred Taxes For Changes in State Tax Apportionment Finance lease obligations Finance Lease, Liability Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Contract with Customer, Liability, Current Contract with Customer, Liability, Current Europe/Other Europe/Other [Member] Europe/Other Segments [Axis] Segments [Axis] Work in process Inventory, Work in Process, Net of Reserves Balance at January 1 Balance at March 31 Product Warranty Accrual, Current Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Organization and Description of the Business Organization And Description Of The Business [Policy Text Block] Disclosure related to the organization and description of the business. New Way New Way [Member] New Way Other, net Payment for (Proceeds from) Other Investing Activity Subsequent Event Type [Axis] Subsequent Event Type [Axis] Cash Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent Assets [Abstract] Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Estimated amortization of intangibles, 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Three Debt Instrument [Axis] Debt Instrument [Axis] Joe Johnson Equipment Joe Johnson Equipment [Member] Joe Johnson Equipment [Member] Fair Value Measurements Fair Value Disclosures [Text Block] Pensions Retirement Benefits [Text Block] Business Combination [Line Items] Business Combination [Line Items] Total before tax Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Gross Carrying Value Finite-Lived Intangible Assets, Gross Credit Facility [Domain] Credit Facility [Domain] Public safety and security equipment Public safety and security equipment [Member] Public safety and security equipment. Equity, Attributable to Parent [Abstract] Equity, Attributable to Parent [Abstract] Class of Stock Disclosures [Abstract] Class of Stock Disclosures [Abstract] Entity Address, Address Line One Entity Address, Address Line One Stock repurchase program Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Plaintiffs [Domain] Plaintiffs [Domain] Plaintiffs [Domain] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Operating Lease, Liability, Noncurrent Operating Lease, Liability, Noncurrent Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Multiemployer plans, withdrawal charges Multiemployer Plans, Withdrawal Charges Amount incurred by withdrawing from a pension pan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. Settlement Candidates Settlement Candidates [Domain] Settlement Candidates [Domain] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Entity Registrant Name Entity Registrant Name Property Lease Guarantee Property Lease Guarantee [Member] Net periodic pension expense Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Estimated product liability obligations of the discontinued North American refuse truck body business Product Liability Accrual, Component Amount Settlement of pre-existing contractual relationship Business Combination, Separately Recognized Transaction, Acquisition-Related Cost, Debt and Equity Securities Issuance Cost, Not Expensed Summary of Components of Long-Term Borrowings and Finance Lease Obligations Schedule of Long-Term Debt Instruments [Table Text Block] Commitments Disclosure [Line Items] Commitments Disclosure [Line Items] Commitments Disclosure [Line Items] Customer relationships Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Customer Relationships The amount of assets representing a favorable existing relationship with customers acquired at the acquisition date. Interest rate swap asset, fair value Interest Rate Derivative Assets, at Fair Value Business Combination, Recognized Asset Acquired,Finance Lease Right-of-Use Assets Business Combination, Recognized Asset Acquired,Finance Lease Right-of-Use Assets Business Combination, Recognized Asset Acquired,Finance Lease Right-of-Use Assets Document Quarterly Report Document Quarterly Report Counterparty Name [Domain] Counterparty Name [Domain] Claims settled amount Loss Contingency Claims Settled Amount Loss contingency claims settled amount. Number of operating segments Number of Operating Segments Contingent Consideration Liability, Current Contingent Consideration Liability, Current Contingent Consideration Liability, Current Related Party Related and Nonrelated Parties [Axis] Interest cost Defined Benefit Plan, Interest Cost Fire Rescue Fire Rescue [Member] Fire rescue. Other current liabilities Disposal Group, Including Discontinued Operation, Other Liabilities, Current Amortization of actuarial losses of defined benefit pension plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax Gross payments Repayments of Long-Term Lines of Credit Schedule of Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Initial cash consideration paid for acquisition Payments to Acquire Businesses, Gross New Jersey Firefighter Plaintiffs New Jersey Firefighter Plaintiffs [Member] [Domain] New Jersey Firefighter Plaintiffs [Member] [Domain] Outstanding letters of credit and bonds Letters of Credit Outstanding, Amount Gain (loss) on disposal Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Other, net Proceeds from (Payment for) Other Financing Activity Percentage of claimants agreed for settlement as per settlement agreement Percentage Of Claimants Agreed For Settlement As Per Settlement Agreement Percentage of claimants agreed for settlement as per settlement agreement. Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Total reclassifications for the period, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Tax Benefit from worthless stock deduction Tax Benefit from worthless stock deduction Tax Benefit from worthless stock deduction Other Other Intangible Assets [Member] Safety and Security Systems Safety And Security Systems [Member] Safety and security systems. Prior Service Costs Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Equity Award [Domain] Award Type [Domain] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Canada CANADA Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Tax expense on change in unrecognized net actuarial losses and prior service cost related to pension benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Supreme Court of State of New York Erie County Supreme Court of State of New York Erie County [Member] Supreme Court of State of New York Erie County [Member] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Estimate of Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] 2019 Credit Agreement 2019 Credit Agreement [Member] 2019 Credit Agreement entered into on July 29, 2019, which amends and restates the Amended 2016 Credit Agreement. Employee Stock Employee Stock [Member] Changes in operating assets and liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital Trade names Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Trade Names The amount of assets representing trade names acquired at the acquisition date. 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