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Commitments and Contingencies - Future Minimum Lease Payments Required under Non-Cancellable Operating Leases (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
|---|---|
| Operating Leases Future Minimum Payments Due [Abstract] | |
| 2014 | $ 13 |
| 2015 | 10 |
| 2016 | 8 |
| 2017 | 6 |
| 2018 | 5 |
| Thereafter | 19 |
| Total | $ 61 |