Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation

The following table reconciles the numerators and denominators used to calculate basic and diluted earnings per share of common stock:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions, except per share amounts)	2015		2014		2015		2014
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	157.4	$	166.6	$	484.4	$	515.9
Weighted average shares of common stock outstanding	224.837		227.077		225.329		227.395
Basic earnings per share of common stock	$	0.70	$	0.73	$	2.15	$	2.27
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	157.4	$	166.6	$	484.4	$	515.9
Weighted average shares of common stock outstanding	224.837		227.077		225.329		227.395
Effect of stock-based compensation	1.154		1.591		1.236		1.827
Weighted average shares of common stock outstanding including dilutive shares	225.991		228.668		226.565		229.222
Diluted earnings per share of common stock	$	0.70	$	0.73	$	2.14	$	2.25