Reporting Segments (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Net Sales by Reporting Segment

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions)	2016			2015			2016			2015
Engine	$	1,359.3		$	1,308.9		$	4,202.7		$	4,102.8
Drivetrain	865.9			583.7			2,640.5			1,821.8
Inter-segment eliminations	(11.0		)	(8.6		)	(31.2		)	(24.5		)
Net sales	$	2,214.2		$	1,884.0		$	6,812.0		$	5,900.1

Segment Earnings Before Interest and Income Taxes

	Three Months Ended September 30,						Nine Months Ended September 30,
(in millions)	2016			2015			2016			2015
Engine	$	218.2		$	211.9		$	686.4		$	670.3
Drivetrain	86.9			70.3			263.5			213.4
Adjusted EBIT	305.1			282.2			949.9			883.7
Asset impairment expense	106.5			—			106.5			—
Restructuring expense	1.3			9.3			26.9			41.3
Merger and acquisition expense	5.9			3.9			18.9			3.9
Contract expiration loss (gain)	1.3			—			(6.2		)	—
Gain on previously held equity interest	—			—			—			(10.8		)
Corporate, including equity in affiliates' earnings and stock-based compensation	27.4			23.2			88.3			81.8
Interest income	(1.6		)	(2.0		)	(4.7		)	(5.3		)
Interest expense and finance charges	22.4			15.0			65.1			42.6
Earnings before income taxes and noncontrolling interest	141.9			232.8			655.1			730.2
Provision for income taxes	48.8			66.9			213.4			219.2
Net earnings	93.1			165.9			441.7			511.0
Net earnings attributable to the noncontrolling interest, net of tax	9.8			8.5			29.9			26.6
Net earnings attributable to BorgWarner Inc.	$	83.3		$	157.4		$	411.8		$	484.4

Segment assets

	September 30,		December 31,
(in millions)	2016		2015
Engine	$	4,233.5	$	4,018.0
Drivetrain	3,566.4		3,685.1
Total	7,799.9		7,703.1
Corporate *	1,207.4		1,122.6
Total assets	$	9,007.3	$	8,825.7

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*    Corporate assets include investments and other long-term receivables and deferred income taxes.