CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenue		$ 11,223,000,000	$ 10,060,000,000	$ 8,774,000,000
Costs and expenses:
Cost of revenue	[1]	1,965,000,000	1,757,000,000	1,597,000,000
Selling and marketing	[1]	5,767,000,000	5,298,000,000	4,367,000,000
Technology and content	[1]	1,617,000,000	1,387,000,000	1,235,000,000
General and administrative	[1]	808,000,000	676,000,000	678,000,000
Amortization of intangible assets		283,000,000	275,000,000	317,000,000
Impairment of goodwill		86,000,000	0	0
Impairment of intangible assets		42,000,000	0	35,000,000
Legal reserves, occupancy tax and other		(59,000,000)	25,000,000	27,000,000
Restructuring and related reorganization charges	[1]	0	17,000,000	56,000,000
Operating income		714,000,000	625,000,000	462,000,000
Other income (expense):
Interest income		71,000,000	34,000,000	20,000,000
Interest expense		(190,000,000)	(182,000,000)	(173,000,000)
Other, net		(110,000,000)	(60,000,000)	(32,000,000)
Total other expense, net		(229,000,000)	(208,000,000)	(185,000,000)
Income before income taxes		485,000,000	417,000,000	277,000,000
Provision for income taxes		(87,000,000)	(45,000,000)	(16,000,000)
Net income		398,000,000	372,000,000	261,000,000
Net loss attributable to non-controlling interests		8,000,000	6,000,000	21,000,000
Net income attributable to Expedia Group, Inc.		$ 406,000,000	$ 378,000,000	$ 282,000,000
Earnings per share attributable to Expedia Group, Inc. available to common stockholders:
Basic (in dollars per share)		$ 2.71	$ 2.49	$ 1.87
Diluted (in dollars per share)		$ 2.65	$ 2.42	$ 1.82
Shares used in computing earnings per share (000's):
Basic (in shares)		149,961	151,619	150,367
Diluted (in shares)		152,889	156,385	154,517

[1] (1) Includes stock-based compensation as follows: Cost of revenue$11 $10 $11Selling and marketing44 40 47Technology and content61 55 63General and administrative87 44 108Restructuring and related reorganization charges— — 13