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Equity - Accumulated Other Comprehensive Income (Loss), Net of Tax (Parenthetical) (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other comprehensive income (loss), Tax | $ 0 | $ 0 | $ 0 |
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Currency Translation Adjustments [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other comprehensive income (loss), Tax | 0 | 0 | 0 |
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Unrealized Gain (Loss) on Equity Investments [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other comprehensive income (loss), Tax | 0 | 0 | 0 |
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Unrealized Gain (Loss) on Cash Flow Hedges [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other comprehensive income (loss), Tax | 0 | 0 | 0 |
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Unrecognized Actuarial Gain (Loss) on Defined Benefit Plans [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |||
| Other comprehensive income (loss), Tax | $ 2 | $ 1 | $ (2) |