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Medium- And Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Pledged to the FHLB as collateral for potential future borrowings - real estate related loans | $ 17,900 |
Pledged to the FHLB as collateral for potential future borrowings - investment securities | 1,100 |
Short-term advances | 500 |
Potential future borrowings | 9,600 |
Fixed-to-floating rate subordinated note | 500 |
Unamortized debt issuance cost | $ 9 | $ 7
5.332% subordinated notes due 2033 | Subsidiaries |  |
Debt Instrument [Line Items] |  |
Maturity year | 2033 |

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- Definition Fixed-to-floating rate subordinated notes + References No definition available. + Details
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- Definition Pledged to the FHLB as collateral for potential future borrowings - investment securities + References No definition available. + Details
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- Definition Pledged to the FHLB as collateral for potential future borrowings - real estate related loans + References No definition available. + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References No definition available. + Details
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