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Segment Information - Revenue by Services and Geographic Area (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | $ 13,691 | $ 12,839 | $ 11,667
United States |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 8,372 | 8,147 | 7,939
All other countries |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 5,319 | 4,692 | 3,728
Lodging |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 10,950 | 10,264 | 8,905
Air |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 428 | 410 | 362
Advertising and media |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 954 | 821 | 777
Other |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 1,359 | 1,344 | 1,623
Sales Channel, Through Intermediary | Merchant |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 9,439 | 8,818 | 7,762
Sales Channel, Through Intermediary | Agency |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | 3,169 | 3,075 | 2,994
Sales Channel, Through Intermediary | Advertising, media and other |  |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |  |
Revenue | $ 1,083 | $ 946 | $ 911

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