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Auto Loans Receivable - Financing Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Balance as of beginning of year |  |  | $ 0.0 |  |  |
Provision for credit losses |  |  | 43.8 | [1] | $ 0.0 | $ 0.0
Initial allowance for purchased credit-deteriorated loans |  |  | 21.7 |  |  |
Write-offs |  |  | (13.9) |  |  |
Recoveries | [2] |  | 5.9 |  |  |
Balance as of end of year |  |  | $ 57.5 |  | $ 0.0 |
CIG Financial Acquisition |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Provision for credit losses |  | $ 34.2 |  |  |  |
[1] | (1) Includes initial credit loss expense of $34.2 million associated with the auto loan portfolio acquired in the acquisition of CIG Financial on October 1, 2022.
[2] | (2) Net of costs incurred to recover vehicle collateral.

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