CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income attributable to Wabtec shareholders	$ 272	$ 169
Foreign currency translation (loss) gain	(88)	25
Unrealized gain on derivative contracts	13	5
Unrealized gain on pension benefit plans and post-retirement benefit plans	1	1
Other comprehensive (loss) income before tax	(74)	31
Income tax expense related to components of other comprehensive income	(3)	(1)
Other comprehensive (loss) income, net of tax	(77)	30
Comprehensive income attributable to Wabtec shareholders	$ 195	$ 199