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Supplemental Financial Information (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2023 | Apr. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022
Supplemental Financial Information [Abstract] |  |  |  |  |
Deposit Liabilities, Collateral Issued, Financial Instruments |  |  |  | $ 12.6 | $ 24.4
Interest Costs Capitalized |  | $ 0.0 | $ 0.0 | $ 5.6 | $ 1.2
Proceeds from Income Tax Refunds | $ 45.9 |  |  |  |

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- Definition Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481047/942-405-50-1 + Details
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