Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Outstanding Loans and Leases - Home Equity - Credit Quality Indicators Including Vintage (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance $ 1,050,785 $ 983,426
Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 39,567  
Consumer real estate | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 1,283  
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 2,214  
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 7,153  
Consumer real estate | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 28,917  
Consumer real estate | Home Equity Loans and Reverse Mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 2,557  
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 268  
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 308  
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 647  
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 1,334  
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 1,200  
Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 25,962  
Consumer real estate | Revolving Loans | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 290  
Consumer real estate | Revolving Loans | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 692  
Consumer real estate | Revolving Loans | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 3,713  
Consumer real estate | Revolving Loans | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 21,267  
Consumer real estate | Revolving Loan Converted to Term Loan    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans Converted to Term Loans 11,048  
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 725  
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 1,214  
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 2,793  
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 6,316  
Less than or equal to 90 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 38,277  
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 2,169  
Less than or equal to 90 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 25,653  
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 10,455  
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 562  
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 159  
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 159  
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 244  
Greater than 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Financing receivable, before credit loss allowance 728  
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 229  
Greater than 100 percent | Consumer real estate | Revolving Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving Loans 150  
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 $ 349