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Represents the cash reserve maintained when certain circumstances are triggered as a percentage of finance receivables securitized, which serves as security for the obligations collaterized by the financing receivables.

No definition available.

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Represents the amount of committed liquidity provided by the funding corporation.

No definition available.

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Represents the number of days for defining financing receivables as past due.

No definition available.

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Gross amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

No definition available.

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Amount of allowance for credit loss on financing receivable, classified as current.

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Amount of net credit losses charged off.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable from change in methodology.

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The carrying amount, as of the date of the latest financial statement presented, of finance receivables which are owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

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Amount of expense related to estimated loss from loan and lease transactions.

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This is the amount of the financial instruments that are considered delinquent (past due) at the end of the period.

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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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Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that continue to be recognized in the statement of financial position. Includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

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Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Name:	us-gaap_UnamortizedDebtIssuanceExpense
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Balance Type:	debit
Period Type:	instant

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Name:	us-gaap_FinancialInstrumentAxis=kar_FloorplanReceivablesMember
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Name:	us-gaap_FinancialInstrumentAxis=kar_OtherLoansMember
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