Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 2,268.6	$ 1,984.2
Cost of sales	1,804.3	1,555.2
Gross profit	464.3	429.0
Selling, general and administrative expenses	188.4	168.2
Other expense, net	11.7	1.2
Operating income	264.2	259.6
Equity in affiliates’ earnings, net of tax	(9.1)	(8.5)
Interest income	(1.6)	(1.7)
Interest expense and finance charges	21.3	10.0
Earnings before income taxes and noncontrolling interest	253.6	259.8
Provision for income taxes	80.4	72.1
Net earnings	173.2	187.7
Net earnings attributable to the noncontrolling interest, net of tax	9.1	8.8
Net earnings attributable to BorgWarner Inc.	$ 164.1	$ 178.9
Earnings per share — basic	$ 0.75	$ 0.79
Earnings per share — diluted	$ 0.75	$ 0.79
Weighted average shares outstanding (thousands):
Basic	217,388	225,796
Diluted	218,137	227,088
Dividends declared per share	$ 0.13	$ 0.13