CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net earnings attributable to BorgWarner Inc.		$ 338	$ 625	$ 944
Other comprehensive (loss) income
Foreign currency translation adjustments		(163)	31	(327)
Hedge instruments	[1]	(37)	24	4
Postretirement defined benefit plans	[1]	8	(7)	(2)
Total other comprehensive (loss) income attributable to BorgWarner Inc.		(192)	48	(325)
Comprehensive income attributable to BorgWarner Inc	[1]	146	673	619
Net earnings attributable to noncontrolling interest, net of tax		61	70	82
Other comprehensive (loss) income attributable to the noncontrolling interest	[1]	(14)	(8)	(24)
Comprehensive income		$ 193	$ 735	$ 677

[1] Net of income taxes.