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Description Of Business (Percentage Of Consumer Loans Assigned Based On Unit and Dollar Volumes) (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Portfolio Program [Member] |  |  |  |
Description Of Business [Line Items] |  |  |  |
Percentage of new consumer loans in unit volume |  | 74.00% | 73.50% | 67.90%
Percentage of new consumer loans in dollar volume | [1] | 70.70% | 69.80% | 65.00%
Purchase Program [Member] |  |  |  |
Description Of Business [Line Items] |  |  |  |
Percentage of new consumer loans in unit volume |  | 26.00% | 26.50% | 32.10%
Percentage of new consumer loans in dollar volume | [1] | 29.30% | 30.20% | 35.00%
[1] | Represents advances paid to Dealers on Consumer Loans assigned under our Portfolio Program and one-time payments made to Dealers to purchase Consumer Loans assigned under our Purchase Program. Payments of Dealer Holdback (as defined below) and accelerated Dealer Holdback are not included.

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- Details
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