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Auto Loans Receivable - Financing Receivable, Past Due (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
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Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | $ 373.6 | $ 377.0
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | 27.8 | 19.7
31-60 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | 18.6 | 13.0
61-90 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | 5.5 | 4.1
Greater than 90 Days |  |
Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | 3.7 | 2.6
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Total auto loans receivable | $ 345.8 | $ 357.3

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