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Derivative And Credit-Related Financial Instruments (Schedule Of Net Gains Recognized In Income On Customer-Initiated Derivatives) (Details) - Customer-initiated and other activities - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net gains recognized in income on customer-initiated derivative instruments | $ 109 | $ 99 | $ 67
Interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net gains recognized in income on customer-initiated derivative instruments | 34 | 36 | 26
Energy Contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net gains recognized in income on customer-initiated derivative instruments | 28 | 18 | 1
Foreign exchange contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net gains recognized in income on customer-initiated derivative instruments | $ 47 | $ 45 | $ 40

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- Definition Net gains recognized in income on customer-initiated derivative instruments + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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