Discontinued Operations - Results of Discontinued Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]
Sales	$ 0	$ 8	$ 0	$ 34
Cost of sales	1	7	2	30
Restructuring charges, net		1	1	3
Other income (expense), net			3	(1)
Pre-tax loss	(1)	0		0
Income tax expense		0		0
Loss from discontinued operations	$ (1)	$ 0	$ 0	$ 0