Name:	car_DebtUnderVehicleProgramsAndBorrowingArrangementsLineItems
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Data Type:	xbrli:stringItemType
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Period Type:	duration

Interest income earned from variable funding notes. This amount is equal to the amount of interest expense on the notes and is eliminated in the consolidation of the financial statements.

+ References

No definition available.

+ Details

Name:	car_InterestIncomeEarned
Namespace Prefix:	car_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The interest rate paid by the variable funding notes issued by Avis Budget Rental Car Funding under the vehicle program.

+ References

No definition available.

+ Details

Name:	car_InterestRateOnVariableFundingNotesIssuedUnderVehicleProgram
Namespace Prefix:	car_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

- Definition

The maximum capacity established by the Company for notes to be issued by Avis Budget Rental Car Funding to the Company to finance the purchase of vehicles.

+ References

No definition available.

+ Details

Name:	car_MaximumCapacityOfVariableFundingNoteProgramToFinanceVehiclePurchases
Namespace Prefix:	car_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of underlying vehicles and related assets collateralizing outstanding balance.

+ References

No definition available.

+ Details

Name:	car_VehicleProgramDebtCollateral
Namespace Prefix:	car_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage points added to the reference rate to compute the variable rate on the lessee's capital lease.

+ References

No definition available.

+ Details

Name:	us-gaap_CapitalLeasesOfLesseeContingentRentalsBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The value of the collateral (typically cash) that the entity receives in a financing transaction in exchange for securities lent. This item represents a liability in the financial statements of the lender of the securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 25

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=7523047&loc=d3e113275-111724

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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Debt Under Vehicle Programs And Borrowing Arrangements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing vehicles and related assets, pledged as collateralized debt		6,900
Minimum
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Interest rate on capital leases		2.00%
Maximum
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Interest rate on capital leases		4.00%
Avis Budget Rental Car Funding Program
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Weighted Average Interest Rate	4.00%	3.00%
Weighted Average Effective Interest Rate	5.00%	3.00%
Maximum Capacity of Variable Funding Note Program to Finance Vehicle Purchases			400
Interest Rate on Variable Funding Notes Issued Under vehicle Program		4.50%
Interest Income Earned	4
Budget Truck Financing
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Weighted Average Interest Rate	5.00%	4.00%
Collateralized financings		392
Capital Leases
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Leasing vehicles and related assets, pledged as collateralized debt		317
Other
Debt Under Vehicle Programs And Borrowing Arrangements [Line Items]
Weighted Average Interest Rate	5.00%	4.00%
Collateral under vehicle programs		2,000