Intangible Assets (Schedule Of Goodwill By Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 5,744	$ 5,190
Corporate Bank [Member]
Goodwill [Line Items]
Goodwill	3,012	2,819
Consumer Bank [Member]
Goodwill [Line Items]
Goodwill	2,339	1,978
Wealth Management [Member]
Goodwill [Line Items]
Goodwill	$ 393	$ 393

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 55
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