v3.26.1
Variable Interest Entities and Securitization Activities - Mortgage and Asset Backed Securitization Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Variable Interest Entity    
Debt and Equity Interests $ 1,581,418 $ 1,420,270
Variable Interest Entity, Not Primary Beneficiary    
Variable Interest Entity    
UPB 227,153 218,543
Variable Interest Entity, Not Primary Beneficiary | Residential mortgages    
Variable Interest Entity    
UPB 21,998 20,130
Variable Interest Entity, Not Primary Beneficiary | Commercial mortgages    
Variable Interest Entity    
UPB 89,820 96,473
Variable Interest Entity, Not Primary Beneficiary | U.S. agency collateralized mortgage obligations    
Variable Interest Entity    
UPB 63,643 58,876
Variable Interest Entity, Not Primary Beneficiary | Other consumer or commercial loans    
Variable Interest Entity    
UPB 51,692 43,064
Variable Interest Entity, Not Primary Beneficiary | Debt and Equity Interests    
Variable Interest Entity    
Debt and Equity Interests 30,156 32,074
Variable Interest Entity, Not Primary Beneficiary | Debt and Equity Interests | Residential mortgages    
Variable Interest Entity    
Debt and Equity Interests 2,809 3,183
Variable Interest Entity, Not Primary Beneficiary | Debt and Equity Interests | Commercial mortgages    
Variable Interest Entity    
Debt and Equity Interests 8,966 11,251
Variable Interest Entity, Not Primary Beneficiary | Debt and Equity Interests | U.S. agency collateralized mortgage obligations    
Variable Interest Entity    
Debt and Equity Interests 6,839 7,136
Variable Interest Entity, Not Primary Beneficiary | Debt and Equity Interests | Other consumer or commercial loans    
Variable Interest Entity    
Debt and Equity Interests $ 11,542 $ 10,504