Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - First Lien Mortgage Securitizations (Details)

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Securitizations and Other Variable Interest Entities - First Lien Mortgage Securitizations (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]          
Mortgage-backed securities, fair value $ 8,400   $ 8,400    
Residential Mortgage - Agency          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]          
Proceeds from loan sales 11,375 $ 2,206 12,927 $ 3,302  
Gains (losses) on securitizations 715 8 721 15  
Repurchases from securitization trusts 167 242 295 486  
Gain (loss) on loans securitized 34 11 61 19  
Deconsolidation of securitizations 9,300 430   1,100  
Commercial Mortgage          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]          
Proceeds from loan sales 220 2,194 2,292 3,181  
Gains (losses) on securitizations (1) 28 40 45  
Repurchases from securitization trusts 0 0 0 0  
First Lien Mortgages          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]          
Mortgage loans serviced for investors 183,400 210,500 183,400 210,500  
Servicing fees 124 $ 144 252 $ 292  
Transfers continuing involvement servicing fee advances 2,000   $ 2,000   $ 2,400
Other income | Residential Mortgage - Agency          
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]          
Gains (losses) on securitizations $ 704