BorgWarner Inc. and Consolidated Subsidiaries Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 8,023.2	$ 8,305.1	$ 7,436.6
Cost of sales	6,320.1	6,548.7	5,879.1
Gross profit	1,703.1	1,756.4	1,557.5
Selling, general and administrative expenses	662.0	698.9	639.7
Other expense, net	101.4	93.8	62.6
Operating income	939.7	963.7	855.2
Equity in affiliates’ earnings, net of tax	(40.0)	(47.3)	(43.5)
Interest income	(7.5)	(5.5)	(4.8)
Interest expense and finance charges	60.4	36.4	34.2
Earnings before income taxes and noncontrolling interest	926.8	980.1	869.3
Provision for income taxes	280.4	292.6	218.3
Net earnings	646.4	687.5	651.0
Net earnings attributable to the noncontrolling interest, net of tax	36.7	31.7	26.7
Net earnings attributable to BorgWarner Inc.	$ 609.7	$ 655.8	$ 624.3
Earnings per share — basic	$ 2.72	$ 2.89	$ 2.73
Earnings per share — diluted	$ 2.70	$ 2.86	$ 2.70
Weighted average shares outstanding (thousands):
Basic	224,414	227,150	228,600
Diluted	225,648	228,924	231,337
Dividends declared per share	$ 0.52	$ 0.51	$ 0.25