Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Schedule of Earnings per Share reconciliation [Text Block]

	Year Ended December 31,
(in millions except per share amounts)	2015		2014		2013
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	609.7	$	655.8	$	624.3
Weighted average shares of common stock outstanding	224.414		227.150		228.600
Basic earnings per share of common stock	$	2.72	$	2.89	$	2.73
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	609.7	$	655.8	$	624.3
Weighted average shares of common stock outstanding	224.414		227.150		228.600
Effect of stock-based compensation	1.234		1.774		2.737
Weighted average shares of common stock outstanding including dilutive shares	225.648		228.924		231.337
Diluted earnings per share of common stock	$	2.70	$	2.86	$	2.70