CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 206	$ 217
Other comprehensive (loss) income
Foreign currency translation adjustments		(66)	39
Hedge instruments	[1]	8	14
Postretirement defined benefit plans	[1]	3	(1)
Total other comprehensive (loss) income attributable to BorgWarner Inc.		(55)	52
Comprehensive income attributable to BorgWarner Inc.	[1]	151	269
Net earnings from continuing operations attributable to noncontrolling interest		15	13
Other comprehensive loss attributable to noncontrolling interest	[1]	(5)	(1)
Comprehensive income		$ 161	$ 281

[1] Net of income taxes.