CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018		Sep. 30, 2017
Income Statement [Abstract]
Revenue	$ 3,276	$ 2,966		$ 8,664		$ 7,741
Costs and expenses:
Cost of revenue	504	459	[1]	1,489	[1]	1,320	[1]
Selling and marketing	1,501	1,461	[1]	4,558	[1]	4,174	[1]
Technology and content	404	350	[1]	1,200	[1]	1,015	[1]
General and administrative	202	141	[1]	597	[1]	478	[1]
Amortization of intangible assets	71	71		215		204
Impairment of goodwill	0	0		61		0
Legal reserves, occupancy tax and other	(78)	(1)		(74)		23
Restructuring and related reorganization charges	0	4		0		16
Operating income	672	481		618		511
Other income (expense):
Interest income	34	9		61		25
Interest expense	(47)	(44)		(149)		(130)
Other, net	(47)	(31)		(101)		(65)
Total other expense, net	(60)	(66)		(189)		(170)
Income before income taxes	612	415		429		341
Provision for income taxes	(81)	(66)		(56)		(22)
Net income	531	349		373		319
Net (income) loss attributable to non-controlling interests	(6)	3		16		4
Net income attributable to Expedia Group, Inc.	$ 525	$ 352		$ 389		$ 323
Earnings per share attributable to Expedia Group, Inc. available to common stockholders:
Basic (in dollars per share)	$ 3.51	$ 2.32		$ 2.59		$ 2.13
Diluted (in dollars per share)	$ 3.43	$ 2.23		$ 2.54		$ 2.06
Shares used in computing earnings per share (000's):
Basic (in shares)	149,482	152,088		150,450		151,406
Diluted (in shares)	153,153	157,760		153,404		156,520
Dividends declared per common share (in dollars per share)	$ 0.32	$ 0.3		$ 0.92		$ 0.86

[1] Includes stock-based compensation as follows: Cost of revenue $3 million, $2 million, $8 million, and $8 million; Selling and marketing $11 million, $10 million, $34 million, and $31 million; Technology and content $15 million, $14 million, $46 million, and $42 million; General and administrative $25 million, $(19) million, $66 million, and $23 million.