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Medium- And Long-Term Debt (Schedule Of Medium- And Long-Term Debt) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument [Line Items] |  |
Medium- and long-term notes | $ 523 | $ 1,356
Total Federal Home Loan Bank advances | 4,000 |
Medium- and long-term debt | 6,206 | 3,024
Parent company |  |
Debt Instrument [Line Items] |  |
Medium- and long-term debt | 764 | 1,593
Subsidiaries |  |
Debt Instrument [Line Items] |  |
Subordinated notes | 965 | 955
Medium- and long-term notes | 489 | 476
Total Federal Home Loan Bank advances | 3,988 | 0
Medium- and long-term debt | 5,442 | 1,431
3.80% subordinated notes due 2026 | Parent company |  |
Debt Instrument [Line Items] |  |
Subordinated notes | $ 241 | 237
Stated interest rate | 3.80% |
Maturity Year | 2026 |
3.70% notes due 2023 | Parent company |  |
Debt Instrument [Line Items] |  |
Medium- and long-term notes | $ 0 | 841
Stated interest rate | 3.70% |
Maturity Year | 2023 |
4.00% notes due 2029 | Parent company |  |
Debt Instrument [Line Items] |  |
Medium- and long-term notes | $ 523 | 515
Stated interest rate | 4.00% |
Maturity Year | 2029 |
4.00% Subordinated Notes Due 2025 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Subordinated notes | $ 337 | 331
Stated interest rate | 4.00% |
Maturity Year | 2025 |
7.875% Subordinated Note Due 2026 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Subordinated notes | $ 162 | 165
Stated interest rate | 7.875% |
Maturity Year | 2026 |
5.332% Subordinated Note Due 2033 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Subordinated notes | $ 466 | 459
Stated interest rate | 5.332% |
Maturity Year | 2033 |
2.50% notes due 2024 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Medium- and long-term notes | $ 489 | 476
Stated interest rate | 2.50% |
Maturity Year | 2024 |
5.07% Advance Due 2025 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Total Federal Home Loan Bank advances | $ 995 | 0
Stated interest rate | 5.07% |
Maturity Year | 2025 |
4.79% Advance Due 2026 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Total Federal Home Loan Bank advances | $ 997 | 0
Stated interest rate | 4.79% |
Maturity Year | 2026 |
4.49% Advance Due 2027 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Total Federal Home Loan Bank advances | $ 999 | 0
Stated interest rate | 4.49% |
Maturity Year | 2027 |
4.49% Advance Due 2028 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Total Federal Home Loan Bank advances | $ 997 | $ 0
Stated interest rate | 4.49% |
Maturity Year | 2028 |

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