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Cover [Abstract] 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] Total noncurrent assets Assets, Noncurrent Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Backlog Order or Production Backlog [Member] Work-in-progress Inventory, Work in Process, Net of Reserves CONTRACT ASSETS AND CONTRACT LIABILITIES Revenue from Contract with Customer [Text Block] Segment Reporting [Abstract] Segment Reporting [Abstract] Non-controlling Interest Noncontrolling Interest [Member] Scenario Forecast Forecast [Member] Interest expense, net Interest Income (Expense), Net Cost of sales: Cost of Goods and Services Sold [Abstract] Total Liabilities and Equity Liabilities and Equity Foreign currency impact Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Goodwill [Roll Forward] Goodwill [Roll Forward] Assumed conversion of dilutive stock-based compensation plans (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Diluted Earnings Per Share, Diluted [Abstract] Non-US Non-US [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Non-Designated Not Designated as Hedging Instrument [Member] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Acquisitions of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Leverage ratio Debt Instrument, Covenant, Leverage Ratio, Maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Less: Present value discount Lessee, Operating Lease, Liability, Undiscounted Excess Amount Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Net income attributable to Wabtec shareholders (in dollars per share) Diluted (in dollars per share) Earnings Per Share, Diluted Other intangible assets, net Intangible Assets, Net (Excluding Goodwill) Award vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Net loss on disposal of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Stock based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Consolidation Items [Axis] Consolidation Items [Axis] Collateral Held [Domain] Collateral Held [Domain] Concentration Risk By Type Concentration Risk Type [Axis] Total current liabilities Liabilities, Current Cash dividends Dividends, Cash 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Transit Segment Transit Segment [Member] Transit segment. Other current assets Other Assets, Current Number of countries where product is found (more than) Number Of Countries Where Product Found Number of countries where product found. RUSSIAN FEDERATION RUSSIAN FEDERATION Remaining performance obligations, amount Revenue, Remaining Performance Obligation, Amount Plan term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Other income and expenses: Nonoperating Income (Expense) [Abstract] Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Derivative asset fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Schedule of Maturity of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Revolving Receivables Program Accounts Receivable Securitization, Policy [Policy Text Block] Accounts Receivable Securitization, Policy Other financing activities Proceeds from (Payments for) Other Financing Activities Balance at beginning of year Balance at end of period Contract with Customer, Liability Product Or Service Product and Service [Axis] Revolving Credit Facility Multi-Currency Revolving Loan Facility [Member] Multi-Currency Revolving Loan Facility Other noncurrent assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Current Availability Line of Credit Facility, Remaining Borrowing Capacity Proceeds from disposal of property, plant and equipment Proceeds From Sale Of Property, Plant, And Equipment And Divestiture Of Business Proceeds From Sale Of Property, Plant, And Equipment And Divestiture Of Business Payments of debt Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Trade Names Trade Names [Member] Credit Facility Credit Facility [Axis] INVENTORIES Inventory Disclosure [Text Block] Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Aggregate Intrinsic value (in millions) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Nonvested, Aggregate Intrinsic Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Nonvested, Aggregate Intrinsic Value [Roll Forward] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Entity Tax Identification Number Entity Tax Identification Number 4.15% Senior Notes, due 2024 4.150 Percent Senior Notes Due Two Thousand and Twenty Four [Member] 4.150 Percent Senior Notes Due Two Thousand and Twenty Four [Member] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Remainder of 2022 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Unbilled accounts receivable Contract with Customer, Asset, after Allowance for Credit Loss, Current Consolidated Entities [Domain] Consolidated Entities [Domain] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] Threatened Litigation Threatened Litigation [Member] Product Warranties Disclosures [Abstract] Product Warranties Disclosures [Abstract] Cross-currency Swaps Currency Swap [Member] Increase (decrease) in cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net cash proceeds received Proceeds from (Repayments of) Accounts Receivable Securitization Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] 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] Finite Lived Intangible Assets By Major Class Finite-Lived Intangible Assets by Major Class [Axis] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Purchase price of acquisition Business Combination, Consideration Transferred Other accrued liabilities Other Accrued Liabilities, Current City Area Code City Area Code Assets Assets [Abstract] Other assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Other Borrowings Other Debt Obligations [Member] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Remaining performance obligation percentage expected to be recognized Revenue, Remaining Performance Obligation, Percentage Foreign currency translation loss Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax 4.70% Senior Notes, due 2028 4.70 Percent Senior Notes Due Two Thousand and Twenty Six [Member] 4.70 Percent Senior Notes Due Two Thousand and Twenty Eight [Member] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Variable Rate [Axis] Variable Rate [Axis] Other long-term liabilities Other Liabilities, Noncurrent Equity income Income (Loss) from Equity Method Investments Components Components [Member] Components Accrued liabilities and customer deposits Increase Decrease In Accrued Liabilities And Customer Deposits Increase decrease in accrued liabilities and customer deposits. Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Derivative term (maximum) Derivative, Term of Contract 4.375% Senior Notes, due 2023 4.375 Percent Senior Notes Due Two Thousand and Twenty Three [Member] 4.375 Percent Senior Notes Due Two Thousand and Twenty Three [Member] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Schedule of Computation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Four Lessee, Operating Lease, Liability, Payments, Due after Year Four