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FINANCE RECEIVABLES - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | $ 3,739.7 | $ 3,348.7 |  |
Less: Allowance for finance receivable losses | (115.8) | (106.4) | $ (97.1) | $ (69.3)
Finance receivables, net | 3,623.9 | 3,242.3 |  |
Asset-backed term funding |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | 2,507.0 | 2,146.5 |  |
Warehouse facilities |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | 890.4 | 749.3 |  |
Other managed receivables |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total finance receivables | $ 342.3 | $ 452.9 |  |

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