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Segment Information - Revenue by Services and Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 12,839	$ 11,667	$ 8,598
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	8,147	7,939	6,569
All other countries
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	4,692	3,728	2,029
Lodging
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	10,264	8,905	6,449
Air
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	410	362	254
Advertising and media
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	821	777	603
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	1,344	1,623	1,292
Sales Channel, Through Intermediary | Merchant
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	8,818	7,762	5,537
Sales Channel, Through Intermediary | Agency
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	3,075	2,994	2,307
Sales Channel, Through Intermediary | Advertising, media and other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	$ 946	$ 911	$ 754

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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