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The incremental increase (in basis points) in the credit spread on the revolver under the credit agreement if the leverage ratio is greater than a specified threshold.

No definition available.

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The minimum, inclusive, leverage ratio, as defined in the credit agreement, in which the credit spread on the revolver would increase based on the pricing terms outlined in the agreement.

No definition available.

Name:	an_DebtCovenantIncreaseinLeverageRatioMinimumBenchmarkRange
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The maximum, exclusive, leverage ratio, as defined in the credit agreement, in which the current credit spread on the revolver applies based on pricing terms outlined in the credit agreement.

No definition available.

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The minimum, inclusive, leverage ratio, as defined in the credit agreement, in which the current credit spread on the revolver applies based on pricing terms outlined in the agreement.

No definition available.

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Finance leases for real property and equipment classified as long-term debt.

No definition available.

Name:	an_FinanceLeasesIncludedInLongtermDebt
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Maximum amount of increase in the revolving credit facility allowed under the accordion feature of the credit agreement, subject to credit availability and certain other conditions.

No definition available.

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Amount of current borrowing capacity under the revolving credit facility considering any current restrictions on the amount that could be borrowed and any amounts currently outstanding under the facility.

No definition available.

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The maximum amount of letters of credit that can be issued under the terms of the revolving credit facilities.

No definition available.

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Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

No definition available.

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Period Type:	duration

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Period Type:	duration

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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Period Type:	duration

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

No definition available.

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Data Type:	num:percentItemType
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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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