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Mexico MEXICO Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Other Asia / Middle East Other Asia and Middle East [Member] Other Asia and Middle East Other Accrued Liabilities Other Accrued Liabilities [Member] Other Accrued Liabilities Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Restated Credit Agreement Restated Credit Agreement [Member] Restated Credit Agreement Present value lease liabilities Operating Lease, Liability Balance at beginning of period Balance at end of period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Two Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary of significant accounting policies. UKRAINE UKRAINE Restructuring charges Restructuring Charges South America South America [Member] 2026 Long-Term Debt, Maturity, Year Four Hedging Designation [Axis] Hedging Designation [Axis] Auditor Location Auditor Location BUSINESS Nature of Operations [Text Block] Entity Filer Category Entity Filer Category Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Federal Current Federal Tax Expense (Benefit) U.S. United States UNITED STATES Information for pension plans with projected benefit obligations in excess of plan assets: Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract] Stock-based compensation expense Share-Based Payment Arrangement, Expense Amounts recognized in Accumulated other comprehensive loss, before tax at December 31, consist of: Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract] Business acquisitions: Noncash Investing and Financing Items [Abstract] Commitments and Contingencies (Note 18) Commitments and Contingencies Security Exchange Name Security Exchange Name Outstanding, beginning of period (in dollars per share) Outstanding, end of period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Letters of credit outstanding Letters of Credit Under Credit Agreement Letters of Credit Outstanding, Amount Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary of significant accounting policies. Total net sales Total sales Net Sales Revenue from Contract with Customer, Excluding Assessed Tax Other Europe Other Europe [Member] Other Europe Service cost Service cost Defined Benefit Plan, Service Cost Cover [Abstract] Entity Voluntary Filers Entity Voluntary Filers Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction CONTRACT ASSETS AND CONTRACT LIABILITIES Revenue from Contract with Customer [Text Block] Less: Cash acquired Cash Acquired from Acquisition Segment Reporting [Abstract] Segment Reporting [Abstract] Deferred revenue Deferred Tax Assets, Deferred Income Change in projected benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Scenario Forecast Forecast [Member] Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Defined Benefit Plan, Plan Assets, Category [Axis] Defined Benefit Plan, Plan Assets, Category [Axis] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Amortization of net loss Defined Benefit Plan, Amortization of Gain (Loss) Total Liabilities and Equity Liabilities and Equity Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Non-US Non-US [Member] Warranty Costs Standard Product Warranty, Policy [Policy Text Block] Non-Designated Not Designated as Hedging Instrument [Member] Gross deferred income tax assets Deferred Tax Assets, Gross Summary of Components of Income from Operations before Provision for Income Taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Less: Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Net income attributable to Wabtec shareholders (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Proceeds from disposal of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Aggregate accumulated benefit obligation Defined Benefit Plan, Accumulated Benefit Obligation Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Consolidation Items [Axis] Consolidation Items [Axis] Accrued expenses and reserves Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Expenses And Reserves Accrued expenses and reserves component of deferred income tax asset. Collateral Held [Domain] Collateral Held [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range Exercise Price Range [Domain] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Other current assets Other Assets, Current Right-of-use assets Deferred Tax Assets, Right-of-use Asset Deferred Tax Assets, Right-of-use Asset Unrecognized tax benefits Balance at beginning of year Balance at end of year Unrecognized Tax Benefits Total deferred income tax assets Deferred Tax Assets, Net of Valuation Allowance Intangible assets Deferred Tax Liabilities, Intangible Assets RUSSIAN FEDERATION RUSSIAN FEDERATION Domestic Income (Loss) from Continuing Operations before Income Taxes, Domestic Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Derivative assets at fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Number of countries where product found (more than) Number Of Countries Where Product Found Number of countries where product found. Summary of Maturity of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Unrecognized tax benefits subject to change within the next 12 months Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Entity Address, Address Line One Entity Address, Address Line One Balance at beginning of year Balance at end of year Contract with Customer, Liability Products and Services Product and Service [Axis] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Other noncurrent assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax (in shares) Stock Granted Exercised And Cancelled For Various Equity Instruments Stock awards granted, exercised and cancelled for the following forms of stock compensation 1) Stock Options 2) Restricted Stock Awards and 3) Incentive Stock Awards. Trade Names Trade Names [Member] Equity Method Investments Equity Method Investments [Policy Text Block] Retirement Plan Type [Axis] Retirement Plan Type [Axis] INVENTORIES Inventory Disclosure [Text Block] Summary of Long-Term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Machinery and equipment Machinery and Equipment [Member] Right-of-use liabilities Deferred Tax Liabilities, Leasing Arrangements Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Funded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Total deferred income tax liabilities Deferred Tax Liabilities, Gross Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Unbilled accounts receivable Contract with Customer, Asset, after Allowance for Credit Loss, Current Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] Below market intangible amortization Amortization of Intangible Liability Amortization of Intangible Liability Threatened Litigation Threatened Litigation [Member] Employee contributions Defined Benefit Plan, Plan Assets, Contributions by Plan Participant Product Warranties Disclosures [Abstract] Product Warranties Disclosures [Abstract] Cross-currency Swaps Currency Swap [Member] Net cash proceeds received (remitted) Proceeds from (Repayments of) Accounts Receivable Securitization VALUATION AND QUALIFYING ACCOUNTS SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Five Projected benefit obligation Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation Allowance for doubtful accounts SEC Schedule, 12-09, Allowance, Credit Loss [Member] Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] FAIR VALUE MEASUREMENT AND DERIVATIVE INSTRUMENTS Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Tax Period [Axis] Tax Period [Axis] Other accrued liabilities Other Accrued Liabilities, Current Weighted Average Exercise Price of Options Currently Exercisable (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price Net amount recognized Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Other Borrowings Other Debt Obligations [Member] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Revenue expected to be recognized over next 12 months Revenue, Remaining Performance Obligation, Percentage Revolving Credit Facility Multi-Currency Revolving Loan Facility [Member] Multi-Currency Revolving Loan Facility North America North America [Member] 3.20% Senior Notes, due 2025 3.2000 Percent Senior Notes Due Two Thousand and Twenty Five [Member] 3.2000 Percent Senior Notes Due Two Thousand and Twenty Five Cost of Goods Sold Cost of Sales [Member] Projected benefit obligation Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation