Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share [Abstract]
Net income attributable to Expedia Group, Inc.	$ 959	$ 684	$ 1,089	$ 935
Earnings Per Share, Basic [Abstract]
Basic (in dollars per share)	$ 7.76	$ 5.28	$ 8.63	$ 7.07
Diluted (in dollars per share)	$ 7.33	$ 5.04	$ 8.18	$ 6.75
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic (in shares)	123,699	129,758	126,246	132,393
Weighted Average Number of Shares Outstanding, Diluted, Adjustment [Abstract]
Convertible notes (in shares)	3,942	3,921	3,933	3,921
Stock-based awards (in shares)	3,373	2,053	3,009	2,341
Diluted (in shares)	131,014	135,732	133,188	138,655