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Accrued Expenses and Other Current Liabilities - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
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|---|---|---|
| Accrued Expenses And Other Current Liabilities [Line Items] | ||
| Accrued commissions and incentives | $ 253 | $ 211 |
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Customer Loyalty Payments [Member]
|
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| Accrued Expenses And Other Current Liabilities [Line Items] | ||
| Accrued commissions and incentives | $ 35 | $ 15 |