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Document and Entity Information
Apr. 29, 2021
Cover [Abstract]  
Entity Registrant Name WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP
Amendment Flag false
Entity Central Index Key 0000943452
Document Type 8-K
Document Period End Date Apr. 29, 2021
Entity Incorporation State Country Code DE
Entity File Number 033-90866
Entity Tax Identification Number 25-1615902
Entity Address, Address Line One 30 Isabella Street
Entity Address, City or Town Pittsburgh
Entity Address, State or Province PA
Entity Address, Postal Zip Code 15212
City Area Code (412)
Local Phone Number 825-1000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.01 per share
Trading Symbol WAB
Security Exchange Name NYSE
Entity Emerging Growth Company false