Orbitz Worldwide - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Related Party Transaction [Line Items]
Investment in Orbitz Worldwide	$ 13		$ 19
Equity in (losses) earnings of investment in Orbitz Worldwide	(4)	2
(Provision for) benefit from income taxes	10	11
Orbitz Worldwide [Member]
Related Party Transaction [Line Items]
Equity investments	44.00%
Investment in Orbitz Worldwide	13		19
Fair value of investment in Orbitz Worldwide	381
Equity in (losses) earnings of investment in Orbitz Worldwide	(4)	2
(Provision for) benefit from income taxes	(7)	158
Equity method investment revenue intercompany	25	22
Balance payable to Orbitz Worldwide	$ 18		$ 12

Equity method investment revenue intercompany.

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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