Geographic Concentration Risk Geographic Concentration Risk [Member] Business Acquisition [Axis] Business Acquisition [Axis] Amounts reclassified from Accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total lease payments Lessee, Operating Lease, Liability, to be Paid Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Expected return on pension assets/amortization Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component Periodic Defined Benefits Expense Reversal of Expense Excluding Interest Cost And Service Cost Component Entity Address, Postal Zip Code Entity Address, Postal Zip Code Weighted Average Remaining Contractual Life Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Debt Instrument Debt Instrument [Axis] Proceeds from debt, net of issuance costs Proceeds from Issuance of Long-Term Debt and Capital Securities, Net Cash dividends Payments of Ordinary Dividends, Common Stock Maximum borrowing capacity Maximum Revolving Credit Facility Availability Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Foreign Exchange Contracts Foreign Exchange Contract [Member] Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Investing Activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Schedule of Components of Other Income, Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Debt instrument, basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Statistical Measurement [Domain] Statistical Measurement [Domain] Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Intangible Assets Disclosure [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Other current assets Other Current Assets [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Redemption of debt Repayments of Debt Reclassified to accounts receivable Contract with Customer, Asset, Reclassified to Receivable Stock repurchase Treasury Stock, Value, Acquired, Cost Method Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Less: Net income attributable to noncontrolling interest Net income attributable to Wabtec shareholders Net Income (Loss) Attributable to Parent Operating Leases Lessee, Operating Lease, Liability, to be Paid [Abstract] Equity Component [Domain] Equity Component [Domain] Scenario [Axis] Scenario [Axis] Secured Debt Secured Debt [Member] Debt redemption price (as a percent) Debt Instrument, Redemption Price, Percentage Restructuring Plan [Axis] Restructuring Plan [Axis] Restated Credit Agreement Restated Credit Agreement [Member] Restated Credit Agreement Percentage of incentive stock awards expected to be vested and awarded of stocks granted (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage LEASES Lessee, Operating Leases [Text Block] Treasury stock, at cost, 47.1 and 45.7 shares, at March 31, 2023 and December 31, 2022, respectively Treasury Stock, Common, Value Plan Name Plan Name [Axis] Interest expense and other, net Interest Expense And Other Net Amount of interest expense and other revenue and expenses that are associated with the entity's normal revenue producing operation. Balance at beginning of year Balance at end of period Contract with Customer, Asset, after Allowance for Credit Loss Other Accrued Liabilities Other Accrued Liabilities [Member] Other Accrued Liabilities Hedging Designation [Domain] Hedging Designation [Domain] 2000 Plan Plan Two Thousand [Member] Plan two thousand. Derivative Instrument [Axis] Derivative Instrument [Axis] Canceled (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Plan Name Plan Name [Domain] Remaining 2023 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Goodwill [Line Items] Goodwill [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Outstanding Borrowings Long-Term Line of Credit Entity Address, State or Province Entity Address, State or Province 3.45% Senior Notes, due 2026 3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member] 3.45 Percent Senior Notes Due Two Thousand and Twenty Six [Member] Outstanding, weighted average remaining contractual life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Award Type Award Type [Axis] Net cash (used for) provided by operating activities Net Cash Provided by (Used in) Operating Activities Unrealized gain on pension benefit plans and post-retirement benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Total expected costs Restructuring and Related Cost, Expected Cost Aftermarket Aftermarket [Member] Aftermarket Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period Long-term debt Long-term portion Long-Term Debt, Excluding Current Maturities Subsidiaries Subsidiaries [Member] Total Liabilities Liabilities Weighted-average remaining lease term (years) Operating Lease, Weighted Average Remaining Lease Term Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Geographical [Axis] Geographical [Axis] Additions/adjustments Goodwill, Purchase Accounting Adjustments Accrued postretirement and pension benefits Liability, Defined Benefit Plan, Noncurrent Warranty claim payments Standard and Extended Product Warranty Accrual, Decrease for Payments Acquired Technology Technology-Based Intangible Assets [Member] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Adjustment for incentive stock awards expected to vest (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Expected To Vest Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Expected To Vest Revolving Credit Facility Revolving Credit Facility [Member] Collateral Held [Axis] Collateral Held [Axis] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Number of positions eliminated Restructuring and Related Cost, Number of Positions Eliminated Document Type Document Type Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Finite Lived Intangible Assets Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] 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, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Segments [Axis] Segments [Axis] LONG-TERM DEBT Debt Disclosure [Text Block] Products And Services Product and Service [Domain] Directors Plan Non-Employee Directors’ Fee and Stock Option Plan [Member] Non-Employee Directors’ Fee and Stock Option Plan [Member] Operating Activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Interest coverage ratio Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Debt Instrument, Covenant, Interest Coverage Ratio, Minimum 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Recognized in current year Contract With Customer Liability New Contract Additions Contract With Customer Liability New Contract Additions Consolidation Items [Domain] Consolidation Items [Domain] Schedule of Change in Carrying Amount of Contract Assets and Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Document Period End Date Document Period End Date Accrued warranty Product Warranty Accrual, Current Schedule of Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Total Assets Assets Debt Disclosure [Abstract] Debt Disclosure [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Adjustment for incentive stock awards expected to vest (in dollars per shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Net Performance Adjustment Weighted Average Net Performance Adjustment Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Net Performance Adjustment Weighted Average Net Performance Adjustment Fair Value Income Statement Location [Axis] Income Statement Location [Axis] Performance Shares Incentive Stock Units Performance Shares [Member] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Income tax expense related to components of other comprehensive income Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Current portion of long-term debt Less: current portion Long-Term Debt, Current Maturities Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [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 Segments [Domain] Segments [Domain] Schedule Of Goodwill [Table] Schedule of Goodwill [Table] EARNINGS PER SHARE Earnings Per Share [Text Block] Schedule of Notional Amounts and Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name Award Type [Domain] Exercisable weighted average remaining contractual life (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Restructuring Plan [Domain] Restructuring Plan [Domain] Schedule of Intangible Assets of the Company, Other Than Goodwill and Trade Names Schedule of Finite-Lived Intangible Assets [Table Text Block] Other comprehensive income before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Derivative Contract Type Derivative Contract [Domain] Gross profit Gross Profit Financing Activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Entity Registrant Name Entity Registrant Name Contract Assets Change in Contract with Customer Asset [Roll Forward] Change in Contract with Customer Asset [Roll Forward] Below market intangible amortization Amortization Of Intangible Liability Amortization Of Intangible Liability Foreign currency impact Goodwill, Foreign Currency Translation Gain (Loss) Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Customer relationships Customer Relationships [Member] Entity Address, City or Town Entity Address, City or Town Derivative contracts Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Leases [Abstract] Leases [Abstract] Operating expenses: Operating Expenses [Abstract] Total Equity Beginning Balance Ending Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Minimum Minimum [Member] Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Raw materials Inventory, Raw Materials, Net of Reserves Unrealized loss on derivative contracts Unrealized Gain (Loss) on Derivatives 2011 Plan Plan Two Thousand Eleven [Member] Plan two thousand eleven. Unamortized debt issuance costs Debt Issuance Costs, Net Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Treasury Stock Treasury Stock, Common [Member] Gross receivables sold/cash proceeds received Proceeds from Accounts Receivable Securitization Trading Symbol Trading Symbol Entity File Number Entity File Number Supplier finance program, obligation Supplier Finance Program, Obligation Supplier Finance Program, Obligation Treasury stock, shares (in shares) Beginning Balance (in shares) Ending Balance (in shares) Treasury Stock, Common, Shares BELARUS BELARUS Noncurrent contract liabilities Contract with Customer, Liability, Noncurrent 2027 Finite-Lived Intangible Asset, Expected Amortization, Year Four Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Engineering expenses Research and Development Expense Equipment Equipment [Member] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Effective tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Line of Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Concentration Risk By Benchmark Concentration Risk Benchmark [Axis] Use of Estimates Use of Estimates, Policy [Policy Text Block] ACQUISITIONS Business Combination Disclosure [Text Block] Accounts payable Increase (Decrease) in Accounts Payable Percent of revenue from customers outside the U.S. (as a percent) Concentration Risk, Percentage Balance at the beginning Balance at end of period Standard and Extended Product Warranty Accrual 2018 Refinancing Credit Agreement Two Thousand and Eighteen Refinancing Agreement [Member] Two Thousand and Eighteen Refinancing Agreement [Member] INCOME TAXES Income Tax Disclosure [Text Block] Finished goods Inventory, Finished Goods, Net of Reserves Credit Facility Credit Facility [Domain] Amortization expense Intangible assets, amortization expense Amortization of Intangible Assets Schedule of Change in the Carrying Amount of Goodwill by Segment Schedule of Goodwill [Table Text Block] Net income attributable to Wabtec shareholders (in dollars per share) Basic (in dollars per share) Earnings Per Share, Basic 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Recognized in current year Contract With Customer Asset New Contract Additions Contract With Customer Asset New Contract Additions 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 Pension and postretirement benefit plans Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Unrealized gain on derivative contracts Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Concentration Risk Type Concentration Risk Type [Domain] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Provisions for loss contracts Provision for Loss on Contracts Damages alleged Loss Contingency, Damages Sought, Value Total Westinghouse Air Brake Technologies Corporation shareholders’ equity Stockholders' Equity Attributable to Parent FAIR VALUE MEASUREMENT AND DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] 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 Entity Interactive Data Current Entity Interactive Data Current Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Changes in operating assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Numerator Net Income (Loss) Attributable to Parent [Abstract] 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Three Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Retained Earnings Retained Earnings [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Litigation Status [Domain] Litigation Status [Domain] Common Stock Common Stock [Member] Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Number of reportable segments Number of Reportable Segments Schedule of Lease Expense, Term and Discount Rate Lease, Cost [Table Text Block] Repurchase of stock Payments for Repurchase of Common Stock Contingent consideration, current Business Combination, Contingent Consideration, Liability Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Number of facilities to be closed Restructuring And Related Cost, Number Of Facilities Closed Restructuring And Related Cost, Number Of Facilities Closed Statement [Table] Statement [Table] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Digital Electronics Digital Electronics [Member] Digital Electronics Document Quarterly Report Document Quarterly Report Net income attributable to Wabtec shareholders per common share Earnings Per Share, Basic and Diluted EPS [Abstract] Earnings Per Share, Basic and Diluted EPS Assets Assets, Current [Abstract] Original Equipment Manufacturer OEM [Member] OEM Statistical Measurement [Axis] Statistical Measurement [Axis] Stock repurchase (in shares) Treasury Stock, Shares, Acquired Integration 2.0 Integration 2.0 [Member] Integration 2.0 Noncurrent contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent Retained earnings Retained Earnings (Accumulated Deficit) Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Equity Components [Axis] Equity Components [Axis] Scenario [Domain] Scenario [Domain] Litigation Case [Domain] Litigation Case [Domain] Exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Accumulated Other Comprehensive Loss Comprehensive Income, Policy [Policy Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Foreign currency impact Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment Contract with Customer Liability Increase (Decrease) Foreign Currency Translation Adjustment Statement [Line Items] Statement [Line Items] 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 Intangible Assets Disclosure [Line Items] Indefinite-Lived Intangible Assets [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Other income, net Total Other income, net Nonoperating Income (Expense) Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Selling, general and administrative expenses Selling, General and Administrative Expense Loss Contingencies [Table] Loss Contingencies [Table] Goods Product [Member] 1.25% Senior Notes (EUR), due 2027 1.25 Percent Euro Notes Due Two Thousand and Twenty Seven [Member] 1.25 Percent Euro Notes Due Two Thousand and Twenty Seven Accumulated Other Comprehensive Loss AOCI Attributable to Parent AOCI Attributable to Parent [Member] Product Information [Line Items] Product Information [Line Items] Document Transition Report Document Transition Report Other comprehensive income before tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Local Phone Number Local Phone Number Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Income from operations Income (loss) from operations Operating Income (Loss) 2024 Notes Plus 2024 Notes Plus [Member] 2024 Notes Plus Inventories Increase (Decrease) in Inventories Total Derivative, Fair Value, Net Accounting Standards Recently Issued New Accounting Pronouncements, Policy [Policy Text Block] Litigation Status [Axis] Litigation Status [Axis] Aggregate borrowing amount Line of Credit Facility, Current Borrowing Capacity Denominator Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Common stock, shares outstanding (in shares) Beginning Balance (in shares) Ending Balance (in shares) Common Stock, Shares, Outstanding Services Service [Member] Goodwill Beginning balance Ending balance Goodwill Other current liabilities Other Current Liabilities [Member] Schedule of Receivables Sold Transfer of Financial Assets Accounted for as Sales [Table Text Block] Restricted Stock and Units Restricted Stock And Units [Member] Restricted stock and units. Depreciation Expense Depreciation, Depletion, and Amortization [Policy Text Block] Collateral Pledged Collateral Pledged [Member] Schedule of Restricted Stock Activity and Incentive Stock Awards Activity Schedule of Incentive Stock Awards Activity and Restricted Stock Activity [Table Text Block] Schedule of Incentive Stock Awards Activity and Restricted Stock Activity [Table Text Block] Adjustments to reconcile net income to net cash (used for) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Income tax expense Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Deferred income taxes Deferred Income Tax Liabilities, Net Schedule of Changes in Product Warranty Reserve Schedule of Product Warranty Liability [Table Text Block] 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Income Statement [Abstract] Income Statement [Abstract] Number of options granted in period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Additional Paid-in Capital Additional Paid-in Capital [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Contract Liabilities Change in Contract with Customer Liability [Roll Forward] Change in Contract with Customer Liability [Roll Forward] Document Fiscal Period Focus Document Fiscal Period Focus Basic Earnings Per Share, Basic [Abstract] Total cost of sales Cost of Goods and Services Sold Derivative [Line Items] Derivative [Line Items] Diluted (in shares) Weighted average shares outstanding- diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of Components of Inventory, Net of Reserves Schedule of Inventory, Current [Table Text Block] Liabilities at fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Loss Contingencies [Line Items] Loss Contingencies [Line Items] Acquisitions/adjustments Contract with Customer, Asset, Increase (Decrease) for Contract Acquired in Business Combination Digital Intelligence Digital Intelligence [Member] Digital Intelligence Cash dividends (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Base Rate Base Rate [Member] Number of countries company operates Number of Countries in which Entity Operates Common stock, $.01 par value; 500.0 shares authorized and 226.9 shares issued: 179.8 and 181.2 outstanding at March 31, 2023 and December 31, 2022, respectively Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Warranty expense Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Senior Notes Senior Notes [Member] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Account receivable securitization facility, maximum amount Account Receivable Securitization Facility, Maximum Amount Account Receivable Securitization Facility, Maximum Amount Operating Segments Operating Segments [Member] Exercisable, aggregate intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value WARRANTIES Product Warranty Disclosure [Text Block] Cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents 2011 and 2000 Plans Plan Two Thousand Eleven And Two Thousand [Member] Plan Two Thousand Eleven And Two Thousand Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] General Electric Company General Electric Company [Member] General Electric Company [Member] Liabilities Liabilities, Current [Abstract] Foreign Exchange Forward Foreign Exchange Forward [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Customer deposits Contract with Customer, Liability, Current Income Statement Location [Domain] Income Statement Location [Domain] Amendment Flag Amendment Flag Trade names, useful life Finite-Lived Intangible Asset, Useful Life Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities Operating lease cost Operating Lease, Cost Face Value Debt Instrument, Face Amount Intangible assets, weighted average remaining useful life (years) Finite-Lived Intangible Assets, Remaining Amortization Period Other comprehensive income, net of tax Other comprehensive income, net Other Comprehensive Income (Loss), Net of Tax Comprehensive income attributable to Wabtec shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Collections reinvested under revolving receivables agreement Repayments of Accounts Receivable Securitization Litigation Case [Axis] Litigation Case [Axis] Schedule of Segment Financial Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Other noncurrent assets Other Assets, Noncurrent Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Exercisable at period end (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Freight Segment Freight Segment [Member] Freight Segment 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. Foreign currency impact/other Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) Derivative [Table] Derivative [Table] Beginning balance (in shares) Ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Current year amounts reclassified to revenue Contract with Customer Liability Revenue Recognized from Current Year Additions Contract with Customer Liability Revenue Recognized from Current Year Additions Acquired technology Technology Equipment [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Effect of changes in currency exchange rates Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Property, plant and equipment, net Property, Plant and Equipment, Net Lease obligation incurred Lease Obligation Incurred Schedule of Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Stock Option Share-Based Payment Arrangement, Option [Member] OTHER INCOME, NET Other Income and Other Expense Disclosure [Text Block] Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax Stock Issued During Period, Value, Stock Options Exercised Other miscellaneous expense, net Other Nonoperating Income (Expense) Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Total Long-Term Debt Balance Sheet Location [Axis] Balance Sheet Location [Axis] RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Contingent consideration Contingent consideration, noncurrent Business Combination, Contingent Consideration, Liability, Noncurrent Restructuring period Restructuring Activities Restructuring Period Restructuring Activities Restructuring Period Accounts receivable from securitization Accounts Receivable from Securitization Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Total operating expenses Operating Expenses Maximum Maximum [Member] Schedule of Sales by Product Revenue from External Customers by Products and Services [Table Text Block] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Fiscal Period Fiscal Period, Policy [Policy Text Block] Total current assets Current assets Assets, Current Designated Designated as Hedging Instrument [Member] Trade names Indefinite-Lived Trademarks Amounts in beginning balance reclassified to revenue Contract with Customer, Liability, Revenue Recognized Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Measurement Basis [Axis] Measurement Basis [Axis] Net sales: Revenues [Abstract] Net Carrying Amount Finite-Lived Intangible Assets, Net Restricted cash Restricted Cash Performance obligation period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Foreign currency gain Foreign Currency Transaction Gain (Loss), Realized ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Unamortized compensation expense expected to be vested Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Denver Transit, Installation of Constant Wireless Crossings Denver Transit Installation of Constant Wireless Crossings [Member] Denver Transit Installation of Constant Wireless Crossings [Member] Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Outstanding, aggregate intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Accounts receivable and unbilled accounts receivable Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Consolidated Entities [Axis] Consolidated Entities [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Present value of lease liabilities Operating Lease, Liability SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Two Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Fair Value Estimate of Fair Value Measurement [Member] Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Inventories, net Total inventories Inventory, Net UKRAINE UKRAINE Accounts payable Accounts Payable, Current Restructuring charges Restructuring Charges Number of businesses acquired Number of Businesses Acquired Hedging Designation [Axis] Hedging Designation [Axis] Schedule Of Product Information [Table] Schedule of Product Information [Table] BUSINESS Nature of Operations [Text Block] Entity Filer Category Entity Filer Category Basic (in shares) Weighted average shares outstanding- basic (in shares) Weighted Average Number of Shares Outstanding, Basic Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stock-based compensation expense Share-Based Payment Arrangement, Expense Commitments and contingencies (Note 14) Commitments and Contingencies Security Exchange Name Security Exchange Name Corporate Activities and Elimination Corporate And Eliminations [Member] Corporate And Eliminations [Member] Beginning balance (in dollars per share) Ending balance (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Gross Notional Amount Derivative, Notional Amount Letters of Credit Under Credit Agreement Letters of Credit Outstanding, Amount Restricted Stock Restricted Stock [Member] Total net sales Total sales Revenue from Contract with Customer, Excluding Assessed Tax Accrued income taxes Increase (Decrease) in Income Taxes Payable Cover page. 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 Restructuring and Related Activities [Abstract] 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 Payment of income tax withholding on share-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement 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] 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] 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 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Transit Segment Transit Segment [Member] Transit segment. Other current assets Other Assets, Current Services Product Line Services Product Line [Member] Services Product Line Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] 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 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 2023 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] (Decrease) increase 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 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] Digital Intelligence Product Line Digital Intelligence Product Line [Member] Digital Intelligence Product Line 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 gain 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 Interest Rate Contracts Interest Rate Contract [Member] 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 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] 2024 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] Cost of Goods Sold Cost of Sales [Member] Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Four Lessee, Operating Lease, Liability, Payments, Due after Year Four