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Debt (Non-Recourse Debt) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 16, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Non-Recourse Debt, Current		$ (8.8)	$ (10.7)
NON-RECOURSE DEBT, NET OF CURRENT PORTION		249.6	312.9
Auto loans receivable		451.2	377.0
Variable Interest Entity, Primary Beneficiary | Asset Pledged as Collateral
Debt Instrument [Line Items]
Restricted cash included in Current Assets		4.3	14.9
Auto loans receivable		50.8	151.4
Nonrecourse
Debt Instrument [Line Items]
Non Recourse Debt		259.9	328.7
Less: unamortized debt discounts and debt issuance costs		(1.5)	(5.1)
Non-Recourse Debt, Current		(8.8)	(10.7)
NON-RECOURSE DEBT, NET OF CURRENT PORTION		249.6	312.9
Warehouse Facilities | Nonrecourse
Debt Instrument [Line Items]
Non Recourse Debt		$ 209.4	181.8
Warehouse Facilities | Nonrecourse | Subsequent Event [Member]
Debt Instrument [Line Items]
Warehouse Facilities Maximum Borrowing Capacity	$ 400.0
Warehouse Facility One [Member] | Nonrecourse
Debt Instrument [Line Items]
Debt instrument, maturity date		Oct. 01, 2024
Warehouse Facility Two [Member] | Nonrecourse | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	Jan. 31, 2025
Term securitization debt | Nonrecourse | Variable Interest Entity, Primary Beneficiary
Debt Instrument [Line Items]
Non Recourse Debt		$ 50.5	$ 146.9
Term securitization debt | Minimum [Member] | Nonrecourse | Variable Interest Entity, Primary Beneficiary
Debt Instrument [Line Items]
Percentage interest on debt instrument		1.49%
Term securitization debt | Maximum [Member] | Nonrecourse | Variable Interest Entity, Primary Beneficiary
Debt Instrument [Line Items]
Percentage interest on debt instrument		4.45%

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The current portion of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the assets used for collateral in the transaction.

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