Subsequent Events (Tables) (Subsequent event [Member])

12 Months Ended

Dec. 31, 2012

Subsequent event [Member]

Summarized Results of Operations for Discontinued Operations

Summarized results of operations for discontinued operations, including the discontinued operations disclosed in Note 4, are as follows:

	Year Ended December 31,
(IN MILLIONS)	2012			2011			2010
Revenues	$	22		$	25		$	31
Operating loss		(10	)		(2	)		(27	)
Loss from operations before income taxes		(10	)		(2	)		(27	)
Benefit for income taxes		4			1			9
Loss from operations		(6	)		(1	)		(18	)
Net (loss)/income attributable to noncontrolling interests		(1	)		1			1
Gain/(Loss) on sale, net of tax(1)		—			1			(5	)
(Loss)/Income from discontinued operations, net of tax	$	(7	)	$	1		$	(22	)