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Financial Instruments - Summary of Gross Fair Value of Company's Derivative Contracts (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
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Dec. 31, 2012
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| Derivatives, Fair Value [Line Items] | ||
| Fair Value Asset | $ 11 | $ 15 |
| Derivative liabilities, Fair Value | (1) | (4) |
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Derivatives Designated as Hedging Instruments [Member] | Interest rate caps [Member] | Accrued Expenses and Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, Fair Value | ||
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Derivatives Designated as Hedging Instruments [Member] | Interest rate caps [Member] | Other Non-Current Assets [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Fair Value Asset | 8 | |
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Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member] | Accrued Expenses and Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, Fair Value | (3) | |
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Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Current Assets [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Fair Value Asset | ||
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Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Accrued Expenses and Other Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, Fair Value | (1) | (1) |
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Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Other Non-Current Liabilities [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Derivative liabilities, Fair Value | ||
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Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Other Non-Current Assets [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Fair Value Asset | 5 | |
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Derivatives Not Designated as Hedging Instruments [Member] | Foreign Currency Contracts [Member] | Other Current Assets [Member]
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| Derivatives, Fair Value [Line Items] | ||
| Fair Value Asset | $ 3 | $ 10 |