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Schedule Of Carrying Amounts And Estimated Fair Values (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Debt Instrument [Line Items] |  |
Short-term debt and current portion of long-term debt |  | $ 19
Reported Value Measurement [Member] |  |
Debt Instrument [Line Items] |  |
Short-term debt and current portion of long-term debt | $ 19 | 19
Long-term debt, excluding convertible debt | 4,191 | 3,416
Debt under vehicle programs Vehicle-backed debt due to Avis Budget Rental Car Funding | 5,080 | 7,936
Vehicle-backed debt | 1,775 | 3,129
Interest rate swaps and interest rate contracts | 2 | 3
Estimate of Fair Value Measurement [Member] |  |
Debt Instrument [Line Items] |  |
Short-term debt and current portion of long-term debt | 18 | 19
Long-term debt, excluding convertible debt | 4,337 | 3,572
Debt under vehicle programs Vehicle-backed debt due to Avis Budget Rental Car Funding | 5,317 | 8,077
Vehicle-backed debt | 1,796 | 3,142
Interest rate swaps and interest rate contracts | $ 2 | $ 3

X
- Definition Carrying amount as of the balance sheet date of obligations due to Avis Budget Rental Car Funding (AESOP) LLC- a related party, for rental vehicles. + References No definition available. + Details
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- Definition Debt under vehicle programs, interest rate swaps and interest rate contracts. + References No definition available. + Details
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- Definition Fair value information on non-current portion of long-term debt, excluding convertible debt. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of debt related to rental vehicles due to third party lenders. + References No definition available. + Details
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Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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X
- Details
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- Details
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