Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share Disclosure [Line Items]
Income (loss) from continuing operations attributable to Expedia, Inc.	$ (104,226)	$ 20,608
Earnings (loss) per share from continuing operations attributable to Expedia, Inc. available to common stockholders:
Basic	$ (0.77)	$ 0.15
Diluted	$ (0.77)	$ 0.15
Weighted average number of shares outstanding: Basic	135,641	133,202
Options to purchase common stock		3,443
Other dilutive securities		2,661
Weighted average number of shares outstanding, Diluted	135,641	139,306