Earnings Per Share - Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Net income attributable to Expedia Group, Inc.	$ 1,234	$ 797	$ 352
Earnings (loss) per share attributable to Expedia Group, Inc. available to common stockholders:
Basic (in dollars per share)	$ 9.39	$ 5.50	$ 2.24
Diluted (in dollars per share)	$ 8.95	$ 5.31	$ 2.17
Weighted average number of shares outstanding (000's):
Basic (in shares)	131,432	144,967	156,672
Dilutive effect of:
Convertible Notes (in shares)	3,921	3,921	3,921
Stock-based awards (in shares)	2,566	1,340	1,158
Diluted (in shares)	137,919	150,228	161,751