Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

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)	2014		2013		2014		2013
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	166.6	$	166.8	$	515.9	$	482.9
Weighted average shares of common stock outstanding	227.077		227.638		227.395		229.168
Basic earnings per share of common stock	$	0.73	$	0.73	$	2.27	$	2.11
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	166.6	$	166.8	$	515.9	$	482.9
Weighted average shares of common stock outstanding	227.077		227.638		227.395		229.168
Effect of stock-based compensation	1.591		2.838		1.827		2.768
Weighted average shares of common stock outstanding including dilutive shares	228.668		230.476		229.222		231.936
Diluted earnings per share of common stock	$	0.73	$	0.72	$	2.25	$	2.08