Earnings Per Share (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
(in millions, except per share amounts)	2014		2013		2014		2013
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	190.2	$	174.1	$	349.3	$	316.1
Weighted average shares of common stock outstanding	227.678		229.496		227.554		229.934
Basic earnings per share of common stock	$	0.84	0.76		$	1.54	$	1.37
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	190.2	$	174.1	$	349.3	$	316.1
Weighted average shares of common stock outstanding	227.678		229.496		227.554		229.934
Effect of stock-based compensation	1.992		2.706		1.945		2.732
Weighted average shares of common stock outstanding including dilutive shares	229.670		232.202		229.499		232.666
Diluted earnings per share of common stock	$	0.83	$	0.75	$	1.52	$	1.36