CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 625	$ 944	$ 537
Other comprehensive (loss) income
Foreign currency translation adjustments	[1]	31	(327)	(102)
Hedge instruments	[1]	24	4	0
Postretirement defined benefit plans	[1]	(7)	(2)	202
Total other comprehensive (loss) income attributable to BorgWarner Inc.		48	(325)	100
Comprehensive income attributable to BorgWarner Inc	[1]	673	619	637
Net earnings attributable to noncontrolling interest, net of tax		70	82	102
Other comprehensive (loss) income attributable to the noncontrolling interest	[1]	(8)	(24)	(6)
Comprehensive income		$ 735	$ 677	$ 733

[1] Net of income taxes.