Quarterly report pursuant to Section 13 or 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
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Unpaid Principal Balance $ 669 $ 584 $ 1,028 $ 827
Carrying Value $ 599 $ 513 $ 914 $ 730
Pre-Modification Interest Rate 3.53% 3.53% 3.57% 3.52%
Post-Modification Interest Rate 3.48% 3.52% 3.43% 3.50%
Residential Mortgage        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Unpaid Principal Balance $ 540 $ 522 $ 858 $ 744
Carrying Value $ 489 $ 466 $ 774 $ 667
Pre-Modification Interest Rate 3.47% 3.53% 3.53% 3.51%
Post-Modification Interest Rate 3.38% 3.51% 3.35% 3.49%
Home equity        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Unpaid Principal Balance $ 129 $ 62 $ 170 $ 83
Carrying Value $ 110 $ 47 $ 140 $ 63
Pre-Modification Interest Rate 3.80% 3.58% 3.77% 3.55%
Post-Modification Interest Rate 3.89% 3.61% 3.84% 3.58%