Outstanding Loans and Leases - Credit Card and Other Consumer - TDRs Entered into During the Period, Narrative (Details) - Credit card and other consumer	3 Months Ended
	Mar. 31, 2020 payment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of consecutive missed payments	2
Period for payment default after modification	12 months
Credit Card
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percent expected to be in payment default within 12 months after modification	14.00%
Direct/indirect consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Percent expected to be in payment default within 12 months after modification	20.00%