Income Taxes - Income (Loss) from Continuing Operations Before Income Taxes and Equity in Earnings (Losses) of Investment in Orbitz Worldwide for US and Non-US Operations (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Abstract]
US	$ 14	$ (59)	$ 46
Non-US	(197)	(87)	(133)
Loss from continuing operations before income taxes and equity in earnings (losses) of investment in Orbitz Worldwide	$ (183)	$ (146)	$ (87)