Loans and Leases - Schedule Of Troubled Debt Restructurings Within The Previous 12 Months (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	38	59
Recorded Investment \| $	$ 29	$ 2
Consumer \| Credit card and other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	4	24
Recorded Investment \| $	$ 0	$ 0
C&I (a) \| Commercial \| C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	18	9
Recorded Investment \| $	$ 5	$ 1
CRE (b) \| Commercial \| C&I
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	6	0
Recorded Investment \| $	$ 19	$ 0
HELOC \| Consumer \| Consumer real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	1	8
Recorded Investment \| $	$ 0	$ 0
Real estate installment loans \| Consumer \| Consumer real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number \| loan	9	18
Recorded Investment \| $	$ 5	$ 1

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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