Segment Information - Revenue by Services and Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 11,667	$ 8,598	$ 5,199
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	7,939	6,569	3,511
All other countries
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,728	2,029	1,688
Lodging
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	8,905	6,449	4,051
Air
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	362	254	105
Advertising and media
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	777	603	405
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	1,623	1,292	638
Other | Bodybuilding.com
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue			59
Sales Channel, Through Intermediary | Merchant
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	7,762	5,537	3,261
Sales Channel, Through Intermediary | Agency
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	2,994	2,307	1,267
Sales Channel, Through Intermediary | Advertising, media and other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 911	$ 754	$ 671