Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Commercial Loans, Loans Held-for-sale and Accrued Interest Receivable (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Commercial Loans, Loans Held-for-sale and Accrued Interest Receivable (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Oct. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans held for sale   $ 6,002 $ 6,871  
Originations and purchases   15,621 24,862 $ 43,635
Net non-cash transfers into LHFS $ 1,600 632 1,900 808
Accrued interest receivable   $ 4,500 $ 3,800  
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Other Receivables Other Receivables  
Credit card lines        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Interest and fee income reversed   $ 584 $ 332  
Commercial        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Carrying Value     1,900 1,300
Lending commitments     358 283
Commitments in payment default     105 262
Loans held for sale   6,000 6,900  
Proceeds from sales and paydowns of loans originally classified as LHFS   16,300 32,000 43,600
Originations and purchases   $ 15,600 $ 24,900 $ 37,300