Earnings (Loss) Per Share - Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income (loss) attributable to Expedia Group, Inc.	$ (736)	$ 183	$ (2,037)	$ 80
Preferred stock dividend	(17)	0	(17)	0
Net income (loss) attributable to Expedia Group, Inc. common stockholders	$ (753)	$ 183	$ (2,054)	$ 80
Earnings (loss) per share attributable to Expedia Group, Inc. available to common stockholders:
Basic (in dollars per share)	$ (5.34)	$ 1.23	$ (14.57)	$ 0.54
Diluted (in dollars per share)	$ (5.34)	$ 1.21	$ (14.57)	$ 0.53
Weighted average number of shares outstanding (000's):
Basic (in shares)	141,072	149,049	140,947	148,468
Dilutive effect of:
Options to purchase common stock (in shares)	0	1,893	0	1,944
Other dilutive securities (in shares)	0	619	0	645
Diluted (in shares)	141,072	151,561	140,947	151,057