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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
Net income attributable to Wabtec shareholders $ 815 $ 633 $ 558
Foreign currency translation gain (loss) 55 (200) (136)
Unrealized gain (loss) on derivative contracts 22 (5) (10)
Unrealized gain on pension benefit plans and post-retirement benefit plans 0 11 21
Other comprehensive income (loss) before tax 77 (194) (125)
Income tax expense related to components of other comprehensive loss (6) (1) (2)
Other comprehensive income (loss), net of tax 71 (195) (127)
Comprehensive income attributable to Wabtec shareholders $ 886 $ 438 $ 431