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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
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	$ 98	$ 109	$ 99
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	22	34	36
Energy Related Derivative [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	25	28	18
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net gains recognized in income on customer-initiated derivative instruments	$ 51	$ 47	$ 45

X

- Definition

Net gains recognized in income on customer-initiated derivative instruments

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E

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