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FINANCE RECEIVABLES - Schedule of Finance Receivables, Net (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | $ 4,661.6 | $ 3,971.1 |  |
Accrued interest and fees | 23.1 | 20.5 |  |
Less: Allowance for credit losses | (139.8) | (123.4) | $ (120.5) | $ (106.4)
Finance receivables, net | 4,544.9 | 3,868.2 |  |
Asset-backed term funding |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | 2,757.3 | 2,604.9 |  |
Warehouse facilities |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | 1,514.8 | 1,052.0 |  |
Other managed receivables |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | $ 389.5 | $ 314.2 |  |

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