Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Loss before income taxes	$ 2	$ 0	$ 2	$ (2)
Provision for income taxes	2	1	3	1
Loss from operations of discontinued foreign subsidiaries	$ 0	$ (1)	$ (1)	$ (3)