Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Home Equity - Credit Quality Indicators Including Vintage (Details)

v3.20.2
Outstanding Loans and Leases and Allowance for Credit Losses - Home Equity - Credit Quality Indicators Including Vintage (Details) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases $ 955,172 $ 983,426
Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 36,530  
Consumer real estate | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 1,112  
Consumer real estate | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 1,912  
Consumer real estate | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 6,144  
Consumer real estate | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 27,362  
Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 2,301  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 246  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 278  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 569  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 1,208  
Consumer real estate | Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 1,300  
Consumer real estate | Home Equity Loan no Longer Originated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 974  
Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 24,298  
Consumer real estate | Revolving Loans | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 241  
Consumer real estate | Revolving Loans | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 577  
Consumer real estate | Revolving Loans | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 3,107  
Consumer real estate | Revolving Loans | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 20,373  
Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 9,931  
Consumer real estate | Revolving Loan Converted to Term Loan | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 625  
Consumer real estate | Revolving Loan Converted to Term Loan | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 1,057  
Consumer real estate | Revolving Loan Converted to Term Loan | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 2,468  
Consumer real estate | Revolving Loan Converted to Term Loan | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 5,781  
Less than or equal to 90 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 35,542  
Less than or equal to 90 percent | Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 1,972  
Less than or equal to 90 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 24,067  
Less than or equal to 90 percent | Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 9,503  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 415  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 133  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 115  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 167  
Greater than 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 573  
Greater than 100 percent | Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Loans and leases 196  
Greater than 100 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 116  
Greater than 100 percent | Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans $ 261