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Loans - Consumer, Excluding Credit Card Loan Portfolio, Loan Modifications, Narrative (Details) - Consumer, excluding credit card - Residential real estate - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Amortized cost of modified loans $ 38,000,000    
Weighted average contractual interest rate 3.57%   5.84%
Additional commitments to lend to borrowers whose loans have been modified as FDM's $ 0    
Loans subject to a trial modification 23,000,000    
Loans subject to Chapter 7 $ 2,000,000    
Carrying value of new TDRs   $ 118,000,000  
Maximum      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Weighted-average term loan extensions 24 years