Other Income, Net - Schedule of Other Income, Net (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Income And Expenses [Abstract]
Equity loss (income)	$ 68	$ 28	$ (15)
Interest income	(13)	(31)	(20)
Foreign currency (gains) losses, net	(33)	(5)	16
Net gain from asset sales	(10)	(321)	(41)
Net gain on mark-to-market derivative contracts	(29)	(13)	(52)
Other, net	(8)	1	25
Other (income) expenses, net	$ (25)	$ (341)	$ (87)