|
Property and Equipment, Net - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Property Plant And Equipment [Abstract] | |||
| Net capital lease assets | $ 104 | $ 94 | |
| Investment in property and equipment | 139 | 155 | |
| Depreciation expense | 126 | 145 | 139 |
| Interest on capital projects capitalized | $ 6 | $ 3 | |