Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share Disclosure [Line Items]
Income (loss) from continuing operations attributable to Expedia, Inc.	$ 71,500	$ 105,241	$ (32,726)	$ 125,849
Earnings (loss) per share from continuing operations attributable to Expedia, Inc. available to common stockholders:
Basic	$ 0.52	$ 0.79	$ (0.24)	$ 0.95
Diluted	$ 0.51	$ 0.76	$ (0.24)	$ 0.91
Weighted average number of shares outstanding: Basic	136,351	132,556	135,998	132,877
Options to purchase common stock	4,594	3,988		3,715
Other dilutive securities	167	1,648		2,155
Weighted average number of shares outstanding, Diluted	141,112	138,192	135,998	138,747