Other (Income) Expenses, Net - Schedule of Other (Income) Expenses, Net (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
Income Statement [Abstract]
Equity loss	$ 18	$ 4	$ 40	$ 16
Interest income	(3)	(6)	(11)	(16)
Foreign currency gains, net	(4)	(3)	(15)	(4)
Net gain from asset sales	(1)	(1)	(7)
Net (gain) loss on mark-to-market derivative contracts (M)	(17)	4	(18)	13
Other, net			(4)	(5)
Other (income) expenses, net	$ (7)	$ (2)	$ (15)	$ 4