CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income attributable to Wabtec shareholders	$ 1,056	$ 815	$ 633
Foreign currency translation (loss) gain	(277)	55	(200)
Unrealized gain (loss) on derivative contracts	14	22	(5)
Unrealized gain on pension benefit plans and post-retirement benefit plans	14	0	11
Other comprehensive (loss) income before tax	(249)	77	(194)
Income tax expense related to components of other comprehensive (loss) income	(7)	(6)	(1)
Other comprehensive (loss) income, net of tax	(256)	71	(195)
Comprehensive income attributable to Wabtec shareholders	$ 800	$ 886	$ 438