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Segment Information - Summary of Segments Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 12,008 | $ 11,994 | $ 9,313
Vehicle depreciation and lease charges, net | 1,739 | 828 | 1,197
Vehicle interest, net | 736 | 402 | 313
Adjusted EBITDA | 2,490 | 4,133 | 2,411
Non-vehicle related depreciation and amortization | 216 | 225 | 272
Assets exclusive of assets under vehicle programs | 9,590 | 8,499 | 8,581
Assets under vehicle programs | 22,979 | 17,428 | 14,019
Property and equipment additions | 273 | 246 | 108
Americas |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 9,347 | 9,474 | 7,557
Vehicle depreciation and lease charges, net | 1,215 | 414 | 851
Vehicle interest, net | 617 | 348 | 258
Adjusted EBITDA | 2,196 | 3,660 | 2,364
Non-vehicle related depreciation and amortization | 147 | 141 | 178
Assets exclusive of assets under vehicle programs | 6,533 | 5,798 | 5,746
Assets under vehicle programs | 19,285 | 14,269 | 11,437
Property and equipment additions | 126 | 117 | 74
International |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 2,661 | 2,520 | 1,756
Vehicle depreciation and lease charges, net | 524 | 414 | 346
Vehicle interest, net | 119 | 54 | 55
Adjusted EBITDA | 400 | 560 | 118
Non-vehicle related depreciation and amortization | 68 | 66 | 84
Assets exclusive of assets under vehicle programs | 2,633 | 2,402 | 2,716
Assets under vehicle programs | 3,694 | 3,159 | 2,582
Property and equipment additions | 44 | 33 | 26
Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Vehicle depreciation and lease charges, net | 0 | 0 | 0
Vehicle interest, net | 0 | 0 | 0
Adjusted EBITDA | (106) | (87) | (71)
Non-vehicle related depreciation and amortization | 1 | 18 | 10
Assets exclusive of assets under vehicle programs | 424 | 299 | 119
Assets under vehicle programs | 0 | 0 | 0
Property and equipment additions | $ 103 | $ 96 | $ 8

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- Definition Adjusted earnings before non-vehicle related depreciation and amortization, any impairment charge, restructuring and other related charges, early extinguishment of debt costs, non-vehicle related interest, transaction-related costs, net charges for an unprecedented personal-injury legal matters, non-operational charges related to shareholder activist activity and income taxes. + References No definition available. + Details
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