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Vehicle Rental Activities - Components Of Vehicle Depreciation And Lease Charges (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Components Of Companys Vehicles [Abstract] |  |  |  |
Depreciation expense | $ 1,402 | $ 1,330 | $ 1,890 |
Lease charges | 156 | 195 | 255 | $ 195
(Gain) loss on sale of vehicles, net | (361) | (157) | (82) |
Vehicle depreciation and lease charges, net | 1,197 | 1,368 | 2,063 |
Other accounts payables | 142 | 232 | 418 |
Receivables due from former subsidiaries | $ 134 | $ 162 | $ 576 |

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- Definition Disclosure - Components of Company's Vehicles [Abstract] + References No definition available. + Details
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- Definition Gain on sales of vehicles, net including the cost of the vehicle disposition, for vehicles used in rental activities. + References No definition available. + Details
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- Definition Vehicle Depreciation And Lease Charges, Net + References No definition available. + Details
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- Definition Amount of depreciation expense recorded on rental vehicles. + References No definition available. + Details
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- Definition Amount of lease charges recorded on rental vehicles. + References No definition available. + Details
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- Definition Amount of obligations incurred classified as other, payable within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount due from parties in nontrade transactions, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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