Schedule of Statement of Operations Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Revenue	$ 1,355,978		$ 1,712,504		$ 1,494,632		$ 1,200,371		$ 1,152,015	$ 1,401,860	$ 1,205,017	$ 1,012,367	$ 5,763,485		$ 4,771,259		$ 4,030,347
Costs and expenses:
Cost of revenue													1,179,081	[1]	1,038,034	[1]	898,604	[1]
Selling and marketing													2,808,329	[1]	2,196,145	[1]	1,721,037	[1]
Technology and content													686,154	[1]	577,820	[1]	484,898	[1]
General and administrative													425,373	[1]	377,078	[1]	345,354	[1]
Amortization of intangible assets													79,615		71,731		31,705
Acquisition-related and other															66,472	[1]
Legal reserves, occupancy tax and other													41,539		77,919		117,025
Restructuring and related reorganization charges	25,630												25,630
Operating income	94,706	[2]	296,836	[2]	129,220	[2]	(2,998)	[2]	138,711	238,691	94,286	(105,628)	517,764		366,060		431,724
Other income (expense):
Other, net													(53,123)		(65,367)		(81,667)
Total other income (expense), net													(53,123)		(65,367)		(81,667)
Income before income taxes													464,641		300,693		350,057
Provision for income taxes													(91,691)		(84,335)		(47,078)
Income from continuing operations													372,950		216,358		302,979
Discontinued operations, net of taxes																	(22,539)
Net income													372,950		216,358		280,440
Net (income) loss attributable to noncontrolling interests													25,147		16,492		(269)
Net income attributable to Expedia, Inc.	65,969		257,059		89,373		(14,304)		94,717	170,859	71,500	(104,226)	398,097		232,850		280,171
Comprehensive income attributable to Expedia, Inc.													241,126		251,025		297,543
Parent
Other income (expense):
Equity in pre-tax earnings of consolidated subsidiaries													455,831		285,456		356,110
Other, net													(91,569)		(83,006)		(83,306)
Total other income (expense), net													364,262		202,450		272,804
Income before income taxes													364,262		202,450		272,804
Provision for income taxes													33,835		30,400		29,906
Income from continuing operations																	302,710
Discontinued operations, net of taxes																	(22,539)
Net income													398,097		232,850		280,171
Net income attributable to Expedia, Inc.													398,097		232,850		280,171
Comprehensive income attributable to Expedia, Inc.													398,097		232,850		280,171
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue													4,500,723		3,849,746		3,490,462
Costs and expenses:
Cost of revenue													898,647		797,801		719,121
Selling and marketing													1,913,719		1,492,370		1,271,163
Technology and content													472,762		399,763		355,567
General and administrative													243,793		216,551		220,360
Amortization of intangible assets													1,848		3,042		6,444
Legal reserves, occupancy tax and other													41,539		77,919
Restructuring and related reorganization charges													5,020
Intercompany (income) expense, net													666,675		731,867		692,325
Operating income													256,720		130,433		108,457
Other income (expense):
Equity in pre-tax earnings of consolidated subsidiaries													282,769		234,869		336,173
Other, net													34,223		7,394		(25,079)
Total other income (expense), net													316,992		242,263		311,094
Income before income taxes													573,712		372,696		419,551
Provision for income taxes													(110,929)		(81,170)		(60,245)
Income from continuing operations																	359,306
Net income													462,783		291,526		359,306
Net income attributable to Expedia, Inc.													462,783		291,526		359,306
Comprehensive income attributable to Expedia, Inc.													463,075		290,857		359,921
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue													1,389,979		970,087		546,204
Costs and expenses:
Cost of revenue													274,788		235,753		178,010
Selling and marketing													1,027,798		756,767		458,565
Technology and content													213,159		178,052		129,860
General and administrative													181,228		160,594		123,566
Amortization of intangible assets													77,767		68,689		25,261
Acquisition-related and other															66,472
Legal reserves, occupancy tax and other																	117,025
Restructuring and related reorganization charges													20,610
Intercompany (income) expense, net													(666,415)		(731,867)		(692,325)
Operating income													261,044		235,627		323,267
Other income (expense):
Other, net													4,223		10,245		26,718
Total other income (expense), net													4,223		10,245		26,718
Income before income taxes													265,267		245,872		349,985
Provision for income taxes													(14,597)		(33,565)		(16,739)
Income from continuing operations																	333,246
Net income													250,670		212,307		333,246
Net (income) loss attributable to noncontrolling interests													25,147		16,492		(269)
Net income attributable to Expedia, Inc.													275,817		228,799		332,977
Comprehensive income attributable to Expedia, Inc.													118,554		247,643		349,734
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenue													(127,217)		(48,574)		(6,319)
Costs and expenses:
Cost of revenue													5,646		4,480		1,473
Selling and marketing													(133,188)		(52,992)		(8,691)
Technology and content													233		5		(529)
General and administrative													352		(67)		1,428
Intercompany (income) expense, net													(260)
Other income (expense):
Equity in pre-tax earnings of consolidated subsidiaries													(738,600)		(520,325)		(692,283)
Total other income (expense), net													(738,600)		(520,325)		(692,283)
Income before income taxes													(738,600)		(520,325)		(692,283)
Income from continuing operations																	(692,283)
Net income													(738,600)		(520,325)		(692,283)
Net income attributable to Expedia, Inc.													(738,600)		(520,325)		(692,283)
Comprehensive income attributable to Expedia, Inc.													$ (738,600)		$ (520,325)		$ (692,283)

[1] Includes stock-based compensation as follows: Cost of revenue $ 3,921 $ 3,752 $ 3,296 Selling and marketing 18,067 16,190 13,474 Technology and content 22,100 20,465 16,073 General and administrative 40,923 33,123 31,753 Acquisition-related and other - 56,643 -

[2] During the fourth quarter of 2014, we recognized $26 million related to restructuring and related reorganization charges.