CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Net sales	$ 4,180	$ 3,874
Cost of sales	3,430	3,124
Gross profit	750	750
Selling, general and administrative expenses	384	388
Restructuring expense	7	15
Other operating expense (income), net	19	(5)
Operating income	340	352
Equity in affiliates’ earnings, net of tax	(4)	(8)
Unrealized loss on debt and equity securities	15	39
Interest expense, net	10	15
Other postretirement expense (income)	2	(9)
Earnings before income taxes and noncontrolling interest	317	315
Provision for income taxes	87	91
Net earnings	230	224
Net earnings attributable to noncontrolling interest, net of tax	13	24
Net earnings attributable to BorgWarner Inc.	$ 217	$ 200
Earnings per share attributable to BorgWarner Inc. — basic (in dollar per share)	$ 0.93	$ 0.84
Earnings per share attributable to BorgWarner Inc. — diluted (in dollar per share)	$ 0.93	$ 0.84
Weighted average shares outstanding:
Basic (in shares)	232.8	238.2
Diluted (in shares)	234.4	239.0