Accumulated Other Comprehensive Loss - Changes in Composition of Accumulated Other Comprehensive Income or Loss (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Increase (Decrease) in Accumulated Other Comprehensive Loss [Roll Forward]
Balance as of beginning of period	$ (239)	$ (316)	$ (190)
Other comprehensive income (Loss)	63	76	(123)
Other comprehensive income (loss)	(9)	1	(3)
Total other comprehensive income (loss)	54	77	(126)
Balance as of end of period	(185)	(239)	(316)
Foreign currency translation adjustments
Increase (Decrease) in Accumulated Other Comprehensive Loss [Roll Forward]
Balance as of beginning of period	(250)	(326)	(203)
Other comprehensive income (Loss)	63	76	(123)
Balance as of end of period	(187)	(250)	(326)
Unrealized gains on available-for-sale securities
Increase (Decrease) in Accumulated Other Comprehensive Loss [Roll Forward]
Balance as of beginning of period	11	10	13
Other comprehensive income (loss)	(9)	1	(3)
Balance as of end of period	$ 2	$ 11	$ 10

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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