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Leases (Schedule of Revenues Disaggregated by Geography) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | $ 3,458 | $ 3,392 | $ 8,832 | $ 8,895
Avis |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | 1,961 | 1,953 | 4,993 | 5,097
Budget |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | 1,312 | 1,247 | 3,306 | 3,261
Other |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | 185 | 192 | 533 | 537
Americas |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | 2,597 | 2,587 | 6,790 | 6,891
Europe, Middle East and Africa |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | 710 | 660 | 1,595 | 1,548
Asia and Australasia |  |  |  |
Lessor, Lease, Description [Line Items] |  |  |  |
Total lease revenues | $ 151 | $ 145 | $ 447 | $ 456

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