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Short-Term Debt and Long-term Debt (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Securities pledged as collateral | $ 0 | $ 0
Unamortized prepayment penalties | $ 1,500,000 | 2,100,000
Maximum ratio of debt to total assets under debt covenant | 50.00% |
Maximum total debt under debt covenant | $ 1,773,000,000 |
Asset Pledged as Collateral [Member] |  |
Debt Instrument [Line Items] |  |
Financing receivables | 1,200,000,000 | $ 733,300,000
FHLB Advances Due In 2021 Through 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Debt extinguished | $ 115,000,000.0 |
Weighted average interest rate | 1.60% |
Increase (decrease) in weighted average interest rate | (0.16%) |

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- Definition Amount of restricted investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI https://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=127002003&loc=SL6242269-115581 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580 + Details
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