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Debt Under Vehicle Programs And Borrowing Arrangements (Schedule Of Available Funding Under The Vehicle Programs) (Detail) $ in Millions | Mar. 31, 2019 USD ($)
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Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | $ 13,355
Outstanding Borrowings (b) | 11,253
Available Capacity | 2,102
Debt Due To Avis Budget Rental Car Funding (Member) |
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | 9,236
Outstanding Borrowings (b) | 8,576
Available Capacity | 660
Leasing Vehicles And Related Assets Pledged As Collateralized Debt | 9,900
Americas Debt Borrowings [Member] |
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | 926
Outstanding Borrowings (b) | 655
Available Capacity | 271
Leasing Vehicles And Related Assets Pledged As Collateralized Debt | 700
International Debt Borrowings [Domain] |
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | 2,985
Outstanding Borrowings (b) | 1,835
Available Capacity | 1,150
Leasing Vehicles And Related Assets Pledged As Collateralized Debt | 2,000
International Capital Leases [Domain] |
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | 207
Outstanding Borrowings (b) | 186
Available Capacity | 21
Leasing Vehicles And Related Assets Pledged As Collateralized Debt | 200
Other (Member) |
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] |
Total Capacity (a) | 1
Outstanding Borrowings (b) | 1
Available Capacity | $ 0

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- Definition Debt Under Vehicle Programs And Borrowing Arrangements [Line Items] + References No definition available. + Details
Name: | car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems
Namespace Prefix: | car_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Leasing Vehicles And Related Assets, Pledged As Collateralized Debt + References No definition available. + Details
Name: | car_LeasingVehiclesAndRelatedAssetsPledgedAsCollateralizedDebt
Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount borrowed under the vehicle program as of the balance sheet date. + References No definition available. + Details
Name: | car_VehicleProgramDebtAmountOutstanding
Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of borrowing capacity currently available under the vehicle program (current borrowing capacity less the amount of borrowings outstanding). + References No definition available. + Details
Name: | car_VehicleProgramDebtAvailableCapacity
Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Maximum borrowing capacity under the vehicle program without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the program. + References No definition available. + Details
Name: | car_VehicleProgramDebtTotalCapacity
Namespace Prefix: | car_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=car_DebtDueToRentalCarFundingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=car_AmericasDebtBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=car_InternationalDebtBorrowingsDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=car_InternationalCapitalLeasesDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LongtermDebtTypeAxis=car_OtherDebtUnderVehicleProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |