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
Jun. 30, 2020
Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance $ 998,944 $ 983,426
Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 38,396  
Consumer real estate | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 1,212  
Consumer real estate | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 2,082  
Consumer real estate | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 6,606  
Consumer real estate | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 28,496  
Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 2,443  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 256  
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]    
Financing receivable, before credit loss allowance 298  
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]    
Financing receivable, before credit loss allowance 600  
Consumer real estate | Home Equity Loans and Reverse Mortgages | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 1,289  
Consumer real estate | Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 1,400  
Consumer real estate | Home Equity Loan no Longer Originated    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 1,100  
Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 25,343  
Consumer real estate | Revolving Loans | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 261  
Consumer real estate | Revolving Loans | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 629  
Consumer real estate | Revolving Loans | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 3,336  
Consumer real estate | Revolving Loans | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 21,117  
Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 10,610  
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 695  
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 1,155  
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 2,670  
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 6,090  
Less than or equal to 90 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 37,252  
Less than or equal to 90 percent | Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 2,091  
Less than or equal to 90 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 25,071  
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 10,090  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 497  
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]    
Financing receivable, before credit loss allowance 141  
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 145  
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 211  
Greater than 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 647  
Greater than 100 percent | Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 211  
Greater than 100 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 127  
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 $ 309