BorgWarner Inc. and Consolidated Subsidiaries Consolidated Statements of Operations (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 8,305.1	$ 7,436.6	$ 7,183.2
Cost of sales	6,548.7	5,879.1	5,716.3
Gross profit	1,756.4	1,557.5	1,466.9
Selling, general and administrative expenses	698.9	639.7	629.3
Other expense, net	93.8	62.6	84.7
Operating income	963.7	855.2	752.9
Equity in affiliates’ earnings, net of tax	(47.3)	(43.5)	(42.8)
Interest income	(5.5)	(4.8)	(4.7)
Interest expense and finance charges	36.4	34.2	39.4
Earnings before income taxes and noncontrolling interest	980.1	869.3	761.0
Provision for income taxes	292.6	218.3	238.6
Net earnings	687.5	651.0	522.4
Net earnings attributable to the noncontrolling interest, net of tax	31.7	26.7	21.5
Net earnings attributable to BorgWarner Inc.	$ 655.8	$ 624.3	$ 500.9
Earnings per share — basic	$ 2.89	$ 2.73	$ 2.22
Earnings per share — diluted	$ 2.86	$ 2.70	$ 2.09	[1]
Weighted average shares outstanding (thousands):
Basic	227,150	228,600	225,304
Diluted	228,924	231,337	242,754
Dividends declared per share	$ 0.51	$ 0.25	$ 0

[1] * The Company's diluted earnings per share for the year ended December 31, 2012 includes the impact of the Company's 3.50% convertible senior notes and associated warrants. Refer to the Earnings Per Share footnote to the Consolidated Financial Statements for further information on the diluted earnings per share calculation.