Debt (Schedule Of Outstanding Term ABS Financings) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Term ABS 2019-2 [Member]
Debt Instrument [Line Items]
Debt financing close date	Aug. 28, 2019
Net Book Value Of Loans Pledged As Collateral	$ 625.1
Term ABS 2020-3 [Member]
Debt Instrument [Line Items]
Debt financing close date	Oct. 22, 2020
Net Book Value Of Loans Pledged As Collateral	$ 750.1
Term ABS 2021-1 [Member]
Debt Instrument [Line Items]
Debt financing close date	Jan. 29, 2021
Net Book Value Of Loans Pledged As Collateral	$ 125.1
Term ABS 2021-2 [Member]
Debt Instrument [Line Items]
Debt financing close date	Feb. 18, 2021
Net Book Value Of Loans Pledged As Collateral	$ 625.1
Term ABS 2021-3 [Member]
Debt Instrument [Line Items]
Debt financing close date	May 20, 2021
Net Book Value Of Loans Pledged As Collateral	$ 562.6
Term ABS 2021-4 [Member]
Debt Instrument [Line Items]
Debt financing close date	Oct. 28, 2021
Net Book Value Of Loans Pledged As Collateral	$ 312.6
Term ABS 2022-1 [Member]
Debt Instrument [Line Items]
Debt financing close date	Jun. 16, 2022
Net Book Value Of Loans Pledged As Collateral	$ 437.6
Term ABS 2022-2 [Member]
Debt Instrument [Line Items]
Debt financing close date	Dec. 15, 2022
Net Book Value Of Loans Pledged As Collateral	$ 250.1
Term ABS 2022-3 [Member]
Debt Instrument [Line Items]
Debt financing close date	Nov. 03, 2022
Net Book Value Of Loans Pledged As Collateral	$ 500.1
Term ABS 2023-1 [Member]
Debt Instrument [Line Items]
Debt financing close date	Mar. 16, 2023
Net Book Value Of Loans Pledged As Collateral	$ 500.2
Term ABS 2023-2 [Member]
Debt Instrument [Line Items]
Debt financing close date	May 25, 2023
Net Book Value Of Loans Pledged As Collateral	$ 500.1
Term ABS 2023-3 [Member]
Debt Instrument [Line Items]
Debt financing close date	Aug. 24, 2023
Net Book Value Of Loans Pledged As Collateral	$ 500.1
Term ABS 2023-A [Member]
Debt Instrument [Line Items]
Debt financing close date	Nov. 30, 2023
Net Book Value Of Loans Pledged As Collateral	$ 252.0
Term ABS 2023-5 [Member]
Debt Instrument [Line Items]
Debt financing close date	Dec. 21, 2023
Net Book Value Of Loans Pledged As Collateral	$ 375.1