EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$ 217	$ 200
Weighted average shares of common stock outstanding (in shares)	232.8	238.2
Basic earnings per share of common stock (in dollar per share)	$ 0.93	$ 0.84
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$ 217	$ 200
Weighted average shares of common stock outstanding (in shares)	232.8	238.2
Effect of stock-based compensation (in shares)	1.6	0.8
Weighted average shares of common stock outstanding including dilutive shares (in shares)	234.4	239.0
Diluted earnings per share of common stock (in dollar per share)	$ 0.93	$ 0.84