CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net sales	$ 3,622	$ 3,226	$ 10,676	$ 9,318
Cost of sales	2,970	2,619	8,767	7,588
Gross profit	652	607	1,909	1,730
Selling, general and administrative expenses	330	325	963	951
Restructuring expense	56	5	68	42
Other operating (income) expense, net	(6)	12	(1)	(7)
Operating income	272	265	879	744
Equity in affiliates’ earnings, net of tax	(10)	(5)	(23)	(21)
Realized and unrealized loss (gain) on debt and equity securities	60	(1)	129	27
Interest (income) expense, net	(19)	12	3	41
Other postretirement expense (income)	3	(1)	8	(2)
Earnings from continuing operations before income taxes and noncontrolling interest	238	260	762	699
Provision for income taxes	133	68	230	177
Net earnings from continuing operations	105	192	532	522
Net (loss) earnings from discontinued operations	(37)	100	(12)	225
Net earnings	68	292	520	747
Net earnings from continuing operations attributable to noncontrolling interest, net of tax	18	19	49	58
Net earnings from discontinued operations attributable to noncontrolling interest, net of tax	0	0	0	0
Net earnings attributable to BorgWarner Inc.	50	273	471	689
Amounts attributable to BorgWarner Inc.:
Net earnings from continuing operations	$ 87	$ 173	$ 483	$ 464
Basic earnings per share:
Earnings per share from continuing operations — basic (in dollar per share)	$ 0.37	$ 0.74	$ 2.07	$ 1.96
Earnings per share from discontinued operations — basic (in dollar per share)	(0.16)	0.43	(0.05)	0.95
Earnings per share attributable to BorgWarner Inc. — basic (in dollar per share)	0.21	1.17	2.02	2.91
Diluted earnings per share:
Earnings per share from continuing operations — diluted (in dollar per share)	0.37	0.73	2.06	1.95
Earnings per share from discontinued operations — diluted (in dollar per share)	(0.16)	0.42	(0.05)	0.95
Earnings per share attributable to BorgWarner Inc. — diluted (in dollar per share)	$ 0.21	$ 1.15	$ 2.01	$ 2.90
Weighted average shares outstanding:
Basic (in shares)	233.4	234.3	233.2	236.5
Diluted (in shares)	235.3	235.6	234.6	237.5
Discontinued Operations | Phinia
Amounts attributable to BorgWarner Inc.:
Net (loss) earnings from discontinued operations	$ (37)	$ 100	$ (12)	$ 225