Pretax Income (Loss) for Domestic and Foreign Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Income Taxes [Abstract]
United States	$ 233	$ 74		$ (17)
Foreign	67	(38)	[1]	89
Income (loss) before income taxes	$ 300	$ 36		$ 72

[1] 2011 includes $128 million of transaction-related costs.