Segment Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 1,494,632	$ 1,205,017	$ 2,695,003	$ 2,217,384
Adjusted EBITDA	259,256	191,702	366,027	296,830
Depreciation	(65,558)	(51,139)	(127,692)	(100,005)
Amortization of intangible assets	(18,264)	(18,837)	(36,756)	(31,407)
Stock-based compensation	(21,014)	(16,086)	(45,835)	(91,164)
Legal reserves, occupancy tax and other	(31,416)	(6,246)	(34,955)	(67,804)
Acquisition-related and other				(9,829)
Realized (gain) loss on revenue hedges	6,216	(5,108)	5,433	(7,963)
Operating income (loss)	129,220	94,286	126,222	(11,342)
Other expense, net	(22,615)	(6,863)	(39,102)	(20,506)
Income (loss) before income taxes	106,605	87,423	87,120	(31,848)
Provision for income taxes	(20,751)	(24,408)	(21,070)	(12,505)
Net income (loss)	85,854	63,015	66,050	(44,353)
Net loss attributable to noncontrolling interests	3,519	8,485	9,019	11,627
Net income (loss) attributable to Expedia, Inc.	89,373	71,500	75,069	(32,726)
Operating Segments | Leisure
Segment Reporting Information [Line Items]
Revenue	1,391,518	1,109,709	2,491,651	2,033,557
Adjusted EBITDA	341,794	264,853	523,280	442,951
Depreciation	(32,939)	(25,507)	(63,452)	(48,568)
Realized (gain) loss on revenue hedges	6,216	(5,108)	5,433	(7,963)
Operating income (loss)	315,071	234,238	465,261	386,420
Operating Segments | Egencia
Segment Reporting Information [Line Items]
Revenue	103,114	95,308	203,352	183,827
Adjusted EBITDA	17,341	17,562	33,662	29,690
Depreciation	(4,501)	(3,335)	(9,156)	(7,032)
Operating income (loss)	12,840	14,227	24,506	22,658
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Adjusted EBITDA	(99,879)	(90,713)	(190,915)	(175,811)
Depreciation	(28,118)	(22,297)	(55,084)	(44,405)
Amortization of intangible assets	(18,264)	(18,837)	(36,756)	(31,407)
Stock-based compensation	(21,014)	(16,086)	(45,835)	(91,164)
Legal reserves, occupancy tax and other	(31,416)	(6,246)	(34,955)	(67,804)
Acquisition-related and other				(9,829)
Operating income (loss)	$ (198,691)	$ (154,179)	$ (363,545)	$ (420,420)