Quarterly report pursuant to Section 13 or 15(d)

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

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Outstanding Loans and Leases and Allowance for Credit Losses - Credit Card and Other Consumer - TDRs Entered into During the Period (Details) - Credit card and other consumer - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Unpaid Principal Balance $ 90 $ 111
Carrying Value $ 95 $ 110
Pre-Modification Interest Rate 17.85% 17.40%
Post-Modification Interest Rate 5.01% 5.30%
Credit card    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Unpaid Principal Balance $ 82 $ 94
Carrying Value $ 90 $ 101
Pre-Modification Interest Rate 18.55% 18.52%
Post-Modification Interest Rate 4.97% 5.30%
Direct/indirect consumer    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Unpaid Principal Balance $ 8 $ 17
Carrying Value $ 5 $ 9
Pre-Modification Interest Rate 5.64% 5.34%
Post-Modification Interest Rate 5.64% 5.34%