v3.26.1
Securitization Activities - Firms Continuing Involvement in Securitization Entities to Which Firm Sold Assets (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Outstanding Principal Amount $ 205,860 $ 192,909
Retained Interests 8,374 6,458
Purchased Interests 106 90
Retained interest 8,230 6,370
U.S. agency obligations    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Outstanding Principal Amount 74,634 62,433
Retained Interests 4,809 3,169
Purchased Interests 0 0
Residential mortgages    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Outstanding Principal Amount 42,057 38,605
Retained Interests 1,823 1,630
Purchased Interests 81 37
Commercial mortgages    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Outstanding Principal Amount 75,498 77,967
Retained Interests 1,146 1,148
Purchased Interests 25 39
Corporate debt and other asset-backed    
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]    
Outstanding Principal Amount 13,671 13,904
Retained Interests 596 511
Purchased Interests $ 0 $ 14