CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Income Statement [Abstract]
Revenue		$ 10,059,844	$ 8,773,564		$ 6,672,317
Costs and expenses:
Cost of revenue		1,756,531	1,596,698	[1]	1,309,559	[1]
Selling and marketing		5,297,832	4,367,417	[1]	3,381,086	[1]
Technology and content		1,386,787	1,235,019	[1]	830,244	[1]
General and administrative		675,961	678,292	[1]	573,913	[1]
Amortization of intangible assets		275,445	317,141		156,458
Impairment of intangible assets		0	34,890		7,207
Legal reserves, occupancy tax and other		25,412	26,498		(104,587)
Restructuring and related reorganization charges	[1]	16,738	55,907		104,871
Operating income		625,138	461,702		413,566
Other income (expense):
Interest income		34,137	19,726		16,695
Interest expense		(181,712)	(173,148)		(126,195)
Gain on sale of business		0	0		508,810
Other, net		(60,799)	(31,680)		113,086
Total other income (expense), net		(208,374)	(185,102)		512,396
Income before income taxes		416,764	276,600		925,962
Provision for income taxes		(45,405)	(15,315)		(203,214)
Net income		371,359	261,285		722,748
Net loss attributable to non-controlling interests		6,605	20,563		41,717
Net income attributable to Expedia, Inc.		$ 377,964	$ 281,848		$ 764,465
Earnings per share attributable to Expedia, Inc. available to common stockholders:
Basic (in dollars per share)		$ 2.49	$ 1.87		$ 5.87
Diluted (in dollars per share)		$ 2.42	$ 1.82		$ 5.70
Shares used in computing earnings per share:
Basic (in shares)		151,619	150,367		130,159
Diluted (in shares)		156,385	154,517		134,018
Dividends declared per common share (in dollars per share)		$ 1.16	$ 1		$ 0.84

[1] (1) Includes stock-based compensation as follows: Cost of revenue$10,173 $11,388 $5,307Selling and marketing39,855 46,654 33,164Technology and content54,633 63,536 26,766General and administrative44,689 108,149 80,082Restructuring and related reorganization charges— 12,690 32,749