CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 216	$ 247	$ 416	$ 312
Other comprehensive (loss) income
Foreign currency translation adjustments	[1]	(262)	57	(280)	(30)
Hedge instruments	[1]	5	4	5	(2)
Defined benefit postretirement plans	[1]	5	2	10	10
Total other comprehensive (loss) income attributable to BorgWarner Inc.		(252)	63	(265)	(22)
Comprehensive (loss) income attributable to BorgWarner Inc.	[1]	(36)	310	151	290
Net earnings attributable to noncontrolling interest, net of tax		15	27	39	56
Other comprehensive loss attributable to noncontrolling interest	[1]	(17)	0	(18)	(5)
Comprehensive (loss) income		$ (38)	$ 337	$ 172	$ 341

[1] Net of income taxes.