CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 204	$ 216	$ 421	$ 416
Other comprehensive loss
Foreign currency translation adjustments	[1]	(95)	(262)	(56)	(280)
Hedge instruments	[1]	24	5	38	5
Defined benefit postretirement plans	[1]	(3)	5	(4)	10
Total other comprehensive loss attributable to BorgWarner Inc.		(74)	(252)	(22)	(265)
Comprehensive income (loss) attributable to BorgWarner Inc.	[1]	130	(36)	399	151
Net income attributable to noncontrolling interest, net of tax		18	15	31	39
Other comprehensive loss attributable to noncontrolling interest	[1]	(13)	(17)	(14)	(18)
Comprehensive income (loss)		$ 135	$ (38)	$ 416	$ 172

[1] Net of income taxes.