Name:	car_DecreaseIncreaseInProgramCash
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Early Debt Extinguishment

No definition available.

Name:	car_EarlyDebtExtinguishment
Namespace Prefix:	car_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Gain on sales of vehicles, net including the cost of the vehicle disposition, for vehicles used in rental activities.

No definition available.

Name:	car_GainLossOnSaleOfVehicles
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Increase (Decrease) In Income Taxes And Deferred Income Taxes

No definition available.

Name:	car_IncreaseDecreaseInIncomeTaxesAndDeferredIncomeTaxes
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Data Type:	xbrli:monetaryItemType
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The cash outflow for acquisition of vehicles used in revenue generation activities.

No definition available.

Name:	car_InvestmentInVehicles
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Net Cash Used In Financing Activities Exclusive Of Vehicle Programs

No definition available.

Name:	car_NetCashProvidedByUsedInFinancingActivitiesExclusiveOfVehiclePrograms
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Net Cash Provided By Used In Financing Activities Of Vehicle Programs

No definition available.

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Data Type:	xbrli:monetaryItemType
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The net cash inflow (outflow) from investing activity exclusive of vehicle programs .

No definition available.

Name:	car_NetCashUsedInInvestingActivitiesExclusiveOfVehiclePrograms
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The net cash inflow (outflow) from investing activities of vehicle programs.

No definition available.

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Net change in assets and liabilities, excluding the impact of acquisitions and dispositions.

No definition available.

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The net cash inflow (outflow) for borrowing related to vehicle programs, having initial term of repayment within one year or the normal operating cycle, if longer.

No definition available.

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The expense recognized in the current period that allocates the cost of non-revenue generating tangible assets over their useful lives.

No definition available.

Name:	car_NonVehicleRelatedDepreciationAndAmortization
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Data Type:	xbrli:monetaryItemType
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The net cash outflow on repayment of principal on borrowings used for vehicle programs

No definition available.

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The cash outflow for a borrowing having initial term of repayment of more than one year or the normal operating cycle, if longer; and/or the cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

No definition available.

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The net cash inflow (outflow) in aggregate debt due to repayments and proceeds from additional borrowings related to vehicle programs

No definition available.

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The cash inflow from a borrowing having initial term of repayment of more than one year or the normal operating cycle, if longer; and/or the cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

No definition available.

Name:	car_ProceedsFromLongTermBorrowings
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The cash inflow from the sale of vehicles used in revenue generation activities.

No definition available.

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Current year acquisitions of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, and production equipment; or the cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

No definition available.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes vehicle related depreciation.

No definition available.

Name:	car_VehicleDepreciation
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Vehicle Programs Financing Activities [Abstract].

No definition available.

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Vehicle Programs Investing Activities [Abstract].

No definition available.

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The cash outflow paid to third parties in connection with debt origination for vehicle programs, which will be amortized over the remaining maturity period of the associated long-term debt.

No definition available.

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Period Type:	duration

No definition available.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The increase (decrease) during the reporting period in other assets used in operating activities less other operating liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets and liabilities, other noncurrent assets and liabilities, or a combination of other current and noncurrent assets and liabilities.

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The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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No definition available.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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No definition available.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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No definition available.

Name:	us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract
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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Name:	us-gaap_PaymentsForProceedsFromOtherInvestingActivities
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The cash outflow to reacquire common stock during the period.

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The cash outflow for loan and debt issuance costs.

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The cash outflow to acquire investments (not to include restricted cash) that are pledged or subject to withdrawal restrictions.

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.