Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 2,092,829	$ 2,580,905	$ 2,195,869	$ 1,903,961	$ 1,698,567	$ 1,937,753	$ 1,662,600	$ 1,373,397	$ 8,773,564	$ 6,672,317	$ 5,763,485
Intersegment revenue									0	0	0
Adjusted EBITDA									1,615,672	1,103,111	1,024,788
Depreciation									(477,061)	(336,680)	(265,817)
Amortization of intangible assets									(317,141)	(156,458)	(76,773)
Impairment of intangible assets	(33,000)								(34,890)	(7,207)	(2,842)
Stock-based compensation									(242,417)	(178,068)	(85,011)
Legal reserves, occupancy tax and other									(26,498)	104,587	(41,539)
Restructuring and related reorganization charges, excluding stock-based compensation									(43,217)	(72,122)	(25,630)
Realized (gain) loss on revenue hedges									(12,746)	(43,597)	(9,412)
Operating income	147,186	386,152	25,662	(97,298)	29,477	344,998	90,092	(51,001)	461,702	413,566	517,764
Other income (expense), net									(185,102)	512,396	(53,123)
Income before income taxes									276,600	925,962	464,641
Provision for income taxes									(15,315)	(203,214)	(91,691)
Net income									261,285	722,748	372,950
Net loss attributable to non-controlling interests									20,563	41,717	25,147
Net income attributable to Expedia, Inc.	$ 79,457	$ 279,331	$ 31,649	$ (108,589)	$ (12,538)	$ 283,216	$ 449,644	$ 44,143	281,848	764,465	398,097
Corporate & Eliminations
Segment Reporting Information [Line Items]
Revenue									(297,318)	(214,632)	(132,964)
Intersegment revenue									(297,318)	(214,632)	(132,964)
Adjusted EBITDA									(641,168)	(509,747)	(400,788)
Depreciation									(164,956)	(116,850)	(98,206)
Amortization of intangible assets									(317,141)	(156,458)	(76,773)
Impairment of intangible assets									(34,890)	(7,207)	(2,842)
Stock-based compensation									(242,417)	(178,068)	(85,011)
Legal reserves, occupancy tax and other									(26,498)	104,587	(41,539)
Restructuring and related reorganization charges, excluding stock-based compensation									(43,217)	(72,122)	(25,630)
Realized (gain) loss on revenue hedges									0	0	0
Operating income									(1,470,287)	(935,865)	(730,789)
Core OTA
Segment Reporting Information [Line Items]
Revenue									7,083,620	5,877,213	4,905,150
Core OTA | Operating Segments
Segment Reporting Information [Line Items]
Revenue									7,083,620	5,877,213	4,905,150
Intersegment revenue									0	0	0
Adjusted EBITDA									1,965,987	1,600,042	1,387,386
Depreciation									(255,778)	(189,318)	(139,509)
Amortization of intangible assets									0	0	0
Impairment of intangible assets									0	0	0
Stock-based compensation									0	0	0
Legal reserves, occupancy tax and other									0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation									0	0	0
Realized (gain) loss on revenue hedges									(12,746)	(43,597)	(9,412)
Operating income									1,697,463	1,367,127	1,238,465
trivago
Segment Reporting Information [Line Items]
Revenue									538,479	333,024	280,555
trivago | Operating Segments
Segment Reporting Information [Line Items]
Revenue									835,797	547,656	413,519
Intersegment revenue									297,318	214,632	132,964
Adjusted EBITDA									34,826	2,856	3,917
Depreciation									(7,145)	(2,113)	(1,360)
Amortization of intangible assets									0	0	0
Impairment of intangible assets									0	0	0
Stock-based compensation									0	0	0
Legal reserves, occupancy tax and other									0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation									0	0	0
Realized (gain) loss on revenue hedges									0	0	0
Operating income									27,681	743	2,557
Egencia
Segment Reporting Information [Line Items]
Revenue									462,279	400,115	399,704
Egencia | Operating Segments
Segment Reporting Information [Line Items]
Revenue									462,279	400,115	399,704
Intersegment revenue									0	0	0
Adjusted EBITDA									80,625	68,116	60,933
Depreciation									(31,340)	(24,394)	(20,032)
Amortization of intangible assets									0	0	0
Impairment of intangible assets									0	0	0
Stock-based compensation									0	0	0
Legal reserves, occupancy tax and other									0	0	0
Restructuring and related reorganization charges, excluding stock-based compensation									0	0	0
Realized (gain) loss on revenue hedges									0	0	0
Operating income									49,285	43,722	40,901
HomeAway
Segment Reporting Information [Line Items]
Revenue									689,186	20,222
HomeAway | Operating Segments
Segment Reporting Information [Line Items]
Revenue									689,186	20,222
Intersegment revenue									0	0
Adjusted EBITDA									175,402	4,011
Depreciation									(17,842)	(742)
Amortization of intangible assets									0	0
Impairment of intangible assets									0	0
Stock-based compensation									0	0
Legal reserves, occupancy tax and other									0	0
Restructuring and related reorganization charges, excluding stock-based compensation									0	0
Realized (gain) loss on revenue hedges									0	0
Operating income									$ 157,560	3,269
eLong
Segment Reporting Information [Line Items]
Revenue										41,743	178,076
eLong | Operating Segments
Segment Reporting Information [Line Items]
Revenue										41,743	178,076
Intersegment revenue										0	0
Adjusted EBITDA										(62,167)	(26,660)
Depreciation										(3,263)	(6,710)
Amortization of intangible assets										0	0
Impairment of intangible assets										0	0
Stock-based compensation										0	0
Legal reserves, occupancy tax and other										0	0
Restructuring and related reorganization charges, excluding stock-based compensation										0	0
Realized (gain) loss on revenue hedges										0	0
Operating income										$ (65,430)	$ (33,370)