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Variable Interest Entities - Securitization Activity (Details) - Nonconsolidated entities - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Residential mortgage    
Securitization activity    
Principal securitized $ 1,073 $ 6,495
All cash flows during the period:    
Proceeds received from loan sales as financial instruments 1,030 6,375
Servicing fees collected 6 24
Cash flows received on interests 74 155
Commercial and other    
Securitization activity    
Principal securitized 0 3,108
All cash flows during the period:    
Proceeds received from loan sales as financial instruments 0 3,106
Servicing fees collected 0 0
Cash flows received on interests $ 87 $ 71