Annual report pursuant to Section 13 and 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
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 260 $ 321 $ 380
Carrying Value $ 264 $ 314 $ 376
Pre-Modification Interest Rate 17.68% 16.70% 18.42%
Post-Modification Interest Rate 4.20% 5.65% 5.34%
Credit card      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 237 $ 269 $ 340
Carrying Value $ 248 $ 277 $ 355
Pre-Modification Interest Rate 18.45% 18.16% 19.18%
Post-Modification Interest Rate 4.09% 5.63% 5.35%
Direct/indirect consumer      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Unpaid Principal Balance $ 23 $ 52 $ 40
Carrying Value $ 16 $ 37 $ 21
Pre-Modification Interest Rate 5.88% 5.83% 5.23%
Post-Modification Interest Rate 5.88% 5.83% 5.21%