Results of Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	$ 34	$ 48	$ 188
Cost of sales	31	50	181
Restructuring expense	3	5	(1)
Other expense, net	1	3	28
Pre-tax loss	(1)	(10)	(20)
Income tax expense (benefit)	(1)	(2)	1
Loss from discontinued operations		$ (8)	$ (21)