Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases and Allowance for Credit Losses - Residential Mortgage - Credit Quality Indicators (Details)

v3.20.4
Outstanding Loans and Leases and Allowance for Credit Losses - Residential Mortgage - Credit Quality Indicators (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 $ 927,861 $ 983,426
Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 34,311  
Consumer real estate | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 223,555  
2020 75,405  
2019 46,643  
2018 15,203  
2017 22,040  
2016 25,070  
Prior 39,194  
Consumer real estate | Less than 620    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 1,082  
Consumer real estate | Less than 620 | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 2,717  
2020 823  
2019 177  
2018 139  
2017 170  
2016 150  
Prior 1,258  
Consumer real estate | Greater than or equal to 620 and less than 680    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 1,798  
Consumer real estate | Greater than or equal to 620 and less than 680 | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 5,462  
2020 1,804  
2019 666  
2018 468  
2017 385  
2016 368  
Prior 1,771  
Consumer real estate | Greater than or equal to 680 and less than 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 5,762  
Consumer real estate | Greater than or equal to 680 and less than 740 | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 25,349  
2020 8,533  
2019 4,679  
2018 1,972  
2017 2,427  
2016 2,307  
Prior 5,431  
Consumer real estate | Greater than or equal to 740    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 25,669  
Consumer real estate | Greater than or equal to 740 | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 178,209  
2020 60,419  
2019 39,107  
2018 12,254  
2017 18,716  
2016 20,275  
Prior 27,438  
Less than or equal to 90 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 33,447  
Less than or equal to 90 percent | Consumer real estate | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 207,389  
2020 68,907  
2019 43,771  
2018 14,658  
2017 21,589  
2016 22,967  
Prior 35,497  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 351  
Greater than 90 percent but less than or equal to 100 percent | Consumer real estate | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 3,138  
2020 1,970  
2019 684  
2018 128  
2017 70  
2016 96  
Prior 190  
Greater than 100 percent | Consumer real estate    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 513  
Greater than 100 percent | Consumer real estate | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 1,210  
2020 702  
2019 174  
2018 47  
2017 39  
2016 37  
Prior 211  
Fully-insured loans | Consumer real estate | Residential mortgage    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total as of December 31, 2020 11,818  
2020 3,826  
2019 2,014  
2018 370  
2017 342  
2016 1,970  
Prior $ 3,296