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Concentration Risk Benchmark [Axis] Total current assets Assets, Current Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Senior Notes Senior Notes [Member] Leverage ratio calculation, restricted cash amount Debt Instrument, Covenant, Leverage Ratio Calculation, Restricted Cash Amount Debt Instrument, Covenant, Leverage Ratio Calculation, Restricted Cash Amount Other accrued liabilities Increase (Decrease) in Accrued Liabilities Current Availability Line of Credit Facility, Remaining Borrowing Capacity Repurchase of stock Payments for Repurchase of Common Stock Exercisable at period end (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Long-term debt Long-term portion Long-Term Debt, Excluding Current Maturities Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] 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] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Remaining performance obligation percentage expected to be recognized Revenue, Remaining Performance Obligation, Percentage INCOME TAXES Income Tax Disclosure [Text Block] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Earnings Per Share [Abstract] Earnings Per Share [Abstract] Numerator Net Income (Loss) Attributable to Parent [Abstract] Schedule of Sales by Product Revenue from External Customers by Products and Services [Table Text Block] Raw materials Inventory, Raw Materials, Net of Reserves Retained earnings Retained Earnings (Accumulated Deficit) Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Inventories Increase (Decrease) in Inventories Treasury stock, retired (in shares) Treasury Stock, Shares, Retired Deferred financing costs Debt Issuance Costs, Gross Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Present value of lease liabilities Operating Lease, Liability Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Performance Shares Incentive Stock Units Performance Shares [Member] Foreign currency impact/other Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) Credit Facility Credit Facility [Axis] Product Warranties Disclosures [Abstract] Product Warranties Disclosures [Abstract] Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Net cash proceeds received included in cash from operating activities Proceeds from (Repayments of) Accounts Receivable Securitization Net loss on disposal of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Operating Activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Gross profit Gross Profit Schedule of Changes in Product Warranty Reserve Schedule of Product Warranty Liability [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value OTHER EXPENSE, NET Other Income and Other Expense Disclosure [Text Block] Fair Value, Inputs, Level 2 Fair Value, Inputs, Level 2 [Member] Unamortized debt issuance costs Debt Issuance Costs, Net LONG-TERM DEBT Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Intangible assets, weighted average remaining useful life (years) Finite-Lived Intangible Assets, Remaining Amortization Period Collateral Held [Axis] Collateral Held [Axis] Equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Geographical [Domain] Geographical [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Face Value Company borrowed amount Debt Instrument, Face Amount Acquired Technology Technology-Based Intangible Assets [Member] Balance at the beginning Balance at end of period Standard and Extended Product Warranty Accrual Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Restructuring and Related Costs [Table] Restructuring Cost [Table] Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Concentration Risk By Type Concentration Risk Type [Axis] Common stock, $.01 par value; 500.0 shares authorized; 171.9 shares issued and 171.1 outstanding at March 31, 2025; 226.9 shares issued and 171.3 outstanding at December 31, 2024 Common Stock, Value, Issued Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Fiscal Period Fiscal Period, Policy [Policy Text Block] Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Litigation Status [Axis] Litigation Status [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Foreign currency impact Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment Contract With Customer Asset Increase (Decrease) Foreign Currency Translation Adjustment Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Canceled (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Other current liabilities Other Current Liabilities [Member] Intangible Assets Disclosure [Line Items] Indefinite-Lived Intangible Assets [Line Items] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Debt instrument, covenant, leverage ratio, maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Debt Instrument, Covenant, Leverage Ratio, Maximum Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Fair Value Measurement [Domain] Fair Value Measurement [Domain] Net income attributable to Wabtec shareholders (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic Accounts payable Increase (Decrease) in Accounts Payable Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward] Plan term Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Schedule Of Product Information [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Foreign currency loss Realized Gain (Loss), Foreign Currency Transaction, before Tax Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule Of Goodwill [Table] Goodwill [Table] Designated Designated as Hedging Instrument [Member] Numerator for basic and diluted earnings per common share Net Income (Loss) Available to Common Stockholders, Basic Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Total Assets Segment assets Assets Transit Segment Transit Segment [Member] Transit segment. Strategic Acquisitions Strategic Acquisitions [Member] Strategic Acquisitions 2026 Finite-Lived Intangible Asset, Expected Amortization, Year One Total cost of sales Cost of sales Cost of Goods and Services Sold Outstanding Borrowings Long-Term Line of Credit Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Other long-term liabilities Other Liabilities, Noncurrent Number of countries where product is found (more than) Number Of Countries Where Product Found Number of countries where product found. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Commitments and contingencies (Note 14) Commitments and Contingencies Termination Date Trading Arrangement Termination Date BUSINESS Nature of Operations [Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Revolving Receivables Program Accounts Receivable Securitization, Policy [Policy Text Block] Accounts Receivable Securitization, Policy STOCK-BASED COMPENSATION Share-Based Payment Arrangement [Text Block] Non-Designated Not Designated as Hedging Instrument [Member] Revolving Credit Facility Multi-Currency Revolving Loan Facility [Member] Multi-Currency Revolving Loan Facility Entity Address, City or Town Entity Address, City or Town Debt Instrument Debt Instrument [Axis] Portfolio Optimization Portfolio Optimization [Member] Portfolio Optimization Stock-based compensation expense Share-Based Payment Arrangement, Expense Net income attributable to Wabtec shareholders Net income attributable to Wabtec shareholders Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Inspection Technologies Inspection Technologies [Member] Inspection Technologies Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax Stock Granted Exercised And Cancelled For Various Equity Instruments, Value Stock Granted Exercised And Cancelled For Various Equity Instruments, Value Business Acquisition [Axis] Business Acquisition [Axis] Schedule of Intangible Assets of the Company, Other Than Goodwill and Trade Names Schedule of Finite-Lived Intangible Assets [Table Text Block] Aggregate borrowing amount Line of Credit Facility, Current Borrowing Capacity Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number 4.150 % 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] Consolidated Entities [Domain] Consolidated Entities [Domain] CONTRACT ASSETS AND CONTRACT LIABILITIES Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Non-controlling Interest Noncontrolling Interest [Member] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Denominator Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Stock repurchase Treasury Stock, Value, Acquired, Cost Method Dellner Couplers Dellner Couplers [Member] Dellner Couplers Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Effect of changes in currency exchange rates Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Restructuring Plan [Domain] Restructuring Plan [Domain] Other accrued liabilities Other Accrued Liabilities, Current Name Forgone Recovery, Individual Name Remaining 2025 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Gross receivables sold/cash proceeds received Proceeds from Accounts Receivable Securitization Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Document Period End Date Document Period End Date Customer collections remitted to financial institution Repayments of Accounts Receivable Securitization Finished goods Inventory, Finished Goods, Net of Reserves Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Total lease payments Lessee, Operating Lease, Liability, to be Paid Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Insider Trading Arrangements [Line Items] Percent of income allocated to non-vested restricted stock Net Income (Loss) Attributable To Parent, Percent Allocated To Non-Vested Restricted Stock Net Income (Loss) Attributable To Parent, Percent Allocated To Non-Vested Restricted Stock Balance at beginning of year Balance at end of period Contract with Customer, Asset, after Allowance for Credit Loss Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Treasury stock retirement Treasury Stock, Retired, Cost Method, Amount Other current assets Other Current Assets [Member] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Amounts in beginning balance reclassified to revenue Contract with Customer, Liability, Revenue Recognized Adjustment to Compensation: Adjustment to Compensation [Axis] Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Foreign Exchange Contracts Foreign Exchange Contract [Member] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Litigation Case [Domain] Litigation Case [Domain] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Litigation Status [Domain] Litigation Status [Domain] Basic (in shares) Weighted average shares outstanding- basic (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Components Components [Member] Components Total Equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Foreign currency translation gain (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name 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] Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Four Lessee, Operating Lease, Liability, Payments, Due after Year Four Number of businesses acquired Number of Businesses Acquired Entity Filer Category Entity Filer Category Remaining performance obligations, amount Revenue, Remaining Performance Obligation, Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Company Selected Measure Name Company Selected Measure Name Base Rate [Member]