Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - TDRs Entered into During the Period (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - TDRs Entered into During the Period (Details) - Consumer real estate - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 1,382 $ 998 $ 819
Carrying Value $ 1,206 $ 865 $ 715
Pre-Modification Interest Rate 3.71% 3.49% 3.66%
Post-Modification Interest Rate 3.62% 3.41% 3.59%
Residential Mortgage      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 1,144 $ 891 $ 732
Carrying Value $ 1,015 $ 788 $ 646
Pre-Modification Interest Rate 3.52% 3.48% 3.66%
Post-Modification Interest Rate 3.40% 3.38% 3.59%
Home equity      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 238 $ 107 $ 87
Carrying Value $ 191 $ 77 $ 69
Pre-Modification Interest Rate 4.61% 3.60% 3.67%
Post-Modification Interest Rate 4.65% 3.59% 3.61%