Reporting Segments (Tables)

6 Months Ended

Jun. 30, 2011

Segment Reporting [Abstract]

Net Sales by Reporting Segment

Net Sales by Reporting Segment

	Three Months Ended June 30,						Six Months Ended June 30,
(millions of dollars)	2011			2010			2011			2010
Engine	$	1,297.9		$	1,017.6		$	2,547.3		$	1,923.6
Drivetrain	525.7			408.7			1,012.1			794.5
Inter-segment eliminations	(4.8		)	(4.6		)	(10.2		)	(9.6		)
Net sales	$	1,818.8		$	1,421.7		$	3,549.2		$	2,708.5

Segment Earnings Before Interest and Income Taxes

Adjusted Earnings Before Interest, Income Taxes and Noncontrolling Interest (“Adjusted EBIT”)

	Three Months Ended June 30,						Six Months Ended June 30,
(millions of dollars)	2011			2010			2011			2010
Engine	$	197.2		$	132.8		$	383.3		$	239.5
Drivetrain	38.9			37.3			70.9			74.0
Adjusted EBIT	236.1			170.1			454.2			313.5
Patent infringement settlement, net of legal costs incurred	(29.1		)	—			(29.1		)	—
Environmental litigation settlement	—			28.0			—			28.0
BERU - Eichenauer equity investment gain	—			(8.0		)	—			(8.0		)
Corporate, including equity in affiliates' earnings and stock-based compensation	28.8			22.8			59.2			50.3
Interest income	(1.2		)	(0.6		)	(2.2		)	(1.2		)
Interest expense and finance charges	20.5			14.2			38.9			28.4
Earnings before income taxes and noncontrolling interest	217.1			113.7			387.4			216.0
Provision for income taxes	49.8			26.0			90.7			46.9
Net earnings	167.3			87.7			296.7			169.1
Net earnings attributable to the noncontrolling interest, net of tax	5.3			4.9			10.2			10.1
Net earnings attributable to BorgWarner Inc.	$	162.0		$	82.8		$	286.5		$	159.0

Segment assets

Total Assets

(millions of dollars)	June 30, 2011		December 31, 2010
Engine	$	3,566.2	$	3,277.7
Drivetrain	1,614.9		1,230.5
Total	5,181.1		4,508.2
Corporate (a)	1,044.9		1,046.8
Total assets	$	6,226.0	$	5,555.0

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(a) Corporate assets include equity in affiliates, investments and advances and deferred income taxes.