CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 217	$ 200
Other comprehensive income (loss)
Foreign currency translation adjustments	[1]	39	(18)
Hedge instruments	[1]	14	0
Defined benefit postretirement plans	[1]	(1)	5
Total other comprehensive income (loss) attributable to BorgWarner Inc.		52	(13)
Comprehensive income attributable to BorgWarner Inc.	[1]	269	187
Net earnings attributable to noncontrolling interest, net of tax		13	24
Other comprehensive loss attributable to noncontrolling interest	[1]	(1)	(1)
Comprehensive income		$ 281	$ 210

[1] Net of income taxes.