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Equity-Based Compensation - Schedule of Equity-Based Compensation Expense Recognized in Consolidated Financial Statements (Parenthetical) (Detail) (Maximum [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended |
|---|---|
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Dec. 31, 2013
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Maximum [Member]
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Equity-based compensation expenses | $ 1 |