Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income attributable to Expedia Group, Inc.	$ 330	$ 386	$ 130	$ 251
Earnings Per Share, Basic [Abstract]
Basic (in dollars per share)	$ 2.61	$ 2.92	$ 1.02	$ 1.88
Diluted (in dollars per share)	$ 2.48	$ 2.80	$ 0.96	$ 1.79
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)	126,453	131,948	127,541	133,724
Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]
Convertible notes (in shares)	3,933	3,921	3,928	3,921
Stock-based awards (in shares)	2,423	1,963	2,827	2,486
Diluted (in shares)	132,809	137,832	134,296	140,131