Earnings Per Share (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
(in millions, except per share amounts)	2015		2014		2015		2014
Basic earnings per share:
Net earnings attributable to BorgWarner Inc.	$	148.1	$	190.2	$	327.0	$	349.3
Weighted average shares of common stock outstanding	225.353		227.678		225.575		227.554
Basic earnings per share of common stock	$	0.66	$	0.84	$	1.45	$	1.54
Diluted earnings per share:
Net earnings attributable to BorgWarner Inc.	$	148.1	$	190.2	$	327.0	$	349.3
Weighted average shares of common stock outstanding	225.353		227.678		225.575		227.554
Effect of stock-based compensation	1.262		1.992		1.277		1.945
Weighted average shares of common stock outstanding including dilutive shares	226.615		229.670		226.852		229.499
Diluted earnings per share of common stock	$	0.65	$	0.83	$	1.44	$	1.52