Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales	$ 2,407.0	$ 2,268.6
Cost of sales	1,889.7	1,804.3
Gross profit	517.3	464.3
Selling, general and administrative expenses	218.8	188.4
Other expense, net	5.8	11.7
Operating income	292.7	264.2
Equity in affiliates’ earnings, net of tax	(9.7)	(9.1)
Interest income	(1.5)	(1.6)
Interest expense and finance charges	18.0	21.3
Earnings before income taxes and noncontrolling interest	285.9	253.6
Provision for income taxes	86.3	80.4
Net earnings	199.6	173.2
Net earnings attributable to the noncontrolling interest, net of tax	10.4	9.1
Net earnings attributable to BorgWarner Inc.	$ 189.2	$ 164.1
Earnings per share — basic	$ 0.89	$ 0.75
Earnings per share — diluted	$ 0.89	$ 0.75
Weighted average shares outstanding (thousands):
Basic	211,596	217,388
Diluted	212,236	218,137
Dividends declared per share	$ 0.14	$ 0.13