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Derivative And Credit-Related Financial Instruments (Schedule Of Weighted Average Maturity And Interest Rates On Risk Management Cash Flow Swaps) (Details) - Variable rate loans - Swaps - cash flow - receive fixed/pay floating rate - Risk management purposes - Cash flow swap | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Weighted Average Remaining Maturity |  | 4 years 7 months 6 days | 2 years 4 months 24 days
Weighted Average Receive Rate | [1] | 2.35% | 1.84%
Weighted Average Pay Rate | [1],[2] | 4.07% | 0.10%
[1] | Excludes forward starting swaps not effective as of the period shown. December 31, 2022 excluded $4.6 billion of forward starting swaps. December 31, 2021 excluded $3.0 billion of forward starting swaps.
[2] | Variable rates paid on receive fixed swaps designated as cash flow hedges are based on one-month LIBOR, BSBY or Secured Overnight Financing Rate (SOFR) rates in effect at December 31, 2022 and 2021. Derivative contracts with maturity dates beyond the LIBOR cessation date will fall back to the daily SOFR with a spread adjustment.

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- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Average variable interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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