|
Financial Instruments - Fair Values of Company's Other Financial Instruments (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Fair Value Of Financial Instruments [Line Items] | ||
| Investment in Orbitz Worldwide, Carrying Amount | $ 19 | |
| Total debt, Carrying Amount | (3,573) | (3,430) |
| Derivative assets, Fair Value | 11 | 15 |
| Derivative liabilities, Fair Value | (1) | (4) |
|
Level 1 [Member]
|
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| Fair Value Of Financial Instruments [Line Items] | ||
| Investment in Orbitz Worldwide, Carrying Amount | 19 | |
| Fair market value of investment in Orbitz Worldwide | 349 | 133 |
|
Level 2 [Member]
|
||
| Fair Value Of Financial Instruments [Line Items] | ||
| Derivative assets, Carrying Amount | 11 | 15 |
| Derivative liabilities, Carrying Amount | (1) | (4) |
| Total debt, Carrying Amount | (3,573) | (3,430) |
| Derivative assets, Fair Value | 11 | 15 |
| Derivative liabilities, Fair Value | (1) | (4) |
| Total debt, Fair Value | $ (3,693) | $ (2,899) |