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 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 $ 68 $ 68 $ 132 $ 148
Carrying Value $ 71 $ 72 $ 137 $ 154
Pre-Modification Interest Rate 19.37% 17.75% 19.09% 17.87%
Post-Modification Interest Rate 3.83% 4.31% 3.83% 4.58%
Credit card        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Unpaid Principal Balance $ 65 $ 62 $ 127 $ 137
Carrying Value $ 69 $ 68 $ 132 $ 147
Pre-Modification Interest Rate 19.77% 18.44% 19.60% 18.48%
Post-Modification Interest Rate 3.78% 4.24% 3.76% 4.53%
Direct/indirect consumer        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Unpaid Principal Balance $ 3 $ 6 $ 5 $ 11
Carrying Value $ 2 $ 4 $ 5 $ 7
Pre-Modification Interest Rate 5.41% 5.64% 5.62% 5.62%
Post-Modification Interest Rate 5.41% 5.64% 5.62% 5.62%