Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 2,214.2	$ 1,884.0	$ 6,812.0	$ 5,900.1
Cost of sales	1,743.1	1,485.8	5,379.9	4,643.9
Gross profit	471.1	398.2	1,432.1	1,256.2
Selling, general and administrative expenses	209.7	148.0	600.4	483.6
Other expense, net	111.1	13.1	147.8	33.4
Operating income	150.3	237.1	683.9	739.2
Equity in affiliates’ earnings, net of tax	(12.4)	(8.7)	(31.6)	(28.3)
Interest income	(1.6)	(2.0)	(4.7)	(5.3)
Interest expense and finance charges	22.4	15.0	65.1	42.6
Earnings before income taxes and noncontrolling interest	141.9	232.8	655.1	730.2
Provision for income taxes	48.8	66.9	213.4	219.2
Net earnings	93.1	165.9	441.7	511.0
Net earnings attributable to the noncontrolling interest, net of tax	9.8	8.5	29.9	26.6
Net earnings attributable to BorgWarner Inc.	$ 83.3	$ 157.4	$ 411.8	$ 484.4
Earnings per share — basic	$ 0.39	$ 0.70	$ 1.91	$ 2.15
Earnings per share — diluted	$ 0.39	$ 0.70	$ 1.90	$ 2.14
Weighted average shares outstanding (thousands):
Basic	212,872	224,837	215,332	225,329
Diluted	213,766	225,991	216,189	226,565
Dividends declared per share	$ 0.13	$ 0.13	$ 0.39	$ 0.39