Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Schedule of Earnings per Share reconciliation [Text Block]

	Year Ended December 31,
(in millions except per share amounts)	2016		2015		2014
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	118.5	$	609.7	$	655.8
Weighted average shares of common stock outstanding	214.374		224.414		227.150
Basic earnings per share of common stock	$	0.55	$	2.72	$	2.89
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	118.5	$	609.7	$	655.8
Weighted average shares of common stock outstanding	214.374		224.414		227.150
Effect of stock-based compensation	0.954		1.234		1.774
Weighted average shares of common stock outstanding including dilutive shares	215.328		225.648		228.924
Diluted earnings per share of common stock	$	0.55	$	2.70	$	2.86