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Loans Receivable (Write-Offs Segmented by Year of Assignment) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | $ 86.7 | $ 63.1
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 47.1 | 72.0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 56.8 | 52.5
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 73.3 | 51.7
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 44.9 | 59.3
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff | 2.6 | 2.0
Allowance for Loan and Lease Losses, Write-offs | 0.0 | 0.0
Allowance for Credit Losses [Member] |  |
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Allowance for Loan and Lease Losses, Write-offs | 311.4 | 300.6
Dealer Loans [Member] |  |
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 45.2 | 31.6
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 25.3 | 23.7
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 28.9 | 23.7
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 33.2 | 18.8
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 9.0 | 19.0
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff | 1.2 | 0.9
Allowance for Loan and Lease Losses, Write-offs | 0.0 | 0.0
Dealer Loans [Member] | Allowance for Credit Losses [Member] |  |
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Allowance for Loan and Lease Losses, Write-offs | 142.8 | 117.7
Purchased Loans [Member] |  |
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff | 41.5 | 31.5
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 21.8 | 48.3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 27.9 | 28.8
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 40.1 | 32.9
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 35.9 | 40.3
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year, Writeoff | 1.4 | 1.1
Allowance for Loan and Lease Losses, Write-offs | 0.0 | 0.0
Purchased Loans [Member] | Allowance for Credit Losses [Member] |  |
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |
Allowance for Loan and Lease Losses, Write-offs | $ 168.6 | $ 182.9

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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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