Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Troubled Debt Restructurings, Narrative (Details)

v3.20.4
Outstanding Loans and Leases and Allowance for Credit Losses - Troubled Debt Restructurings, Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
payment
Dec. 31, 2019
USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 927,861 $ 983,426
Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 34,311  
Real estate acquired through foreclosure 123 $ 229
Loans with formal foreclosure proceeding in process 1,200  
Reclassified consumer real estate loans $ 182  
Number of missing payments causing default | payment 3  
Consumer real estate | Chapter Seven Bankruptcy    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 372  
Nonperforming Loans | Consumer real estate | Chapter Seven Bankruptcy | US Government Sponsored-Enterprise Insured Loans | Federal Housing Administration    
Financing Receivable, Credit Quality Indicator [Line Items]    
Real estate acquired through foreclosure 102  
Performing Financial Instruments | Consumer real estate | Chapter Seven Bankruptcy | US Government Sponsored-Enterprise Insured Loans | Federal Housing Administration    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 68