v3.25.4
Consolidations and Transfers of Financial Assets - Unconsolidated VIEs (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Variable Interest Entities [Line Items]    
Total Assets $ 4,317,538 $ 4,349,731
Unpaid principal balance of mortgage loans 4,095,866 4,110,196
Partnership interest    
Variable Interest Entities [Line Items]    
Net carrying amount 2,500 2,000
Unconsolidated VIEs | Mortgage-related securities    
Variable Interest Entities [Line Items]    
Total Assets 535,491 203,841
Maximum Exposure to Loss 199,010 203,316
Net carrying amount 14,100 1,200
Unconsolidated VIEs | Available-for-Sale Securities    
Variable Interest Entities [Line Items]    
Total Assets 22,835 23,222
Maximum Exposure to Loss 22,847 23,224
Unconsolidated VIEs | Partnership interest    
Variable Interest Entities [Line Items]    
Total Assets 6,973 6,428
Maximum Exposure to Loss 750 669
Net carrying amount 750 669
Multifamily    
Variable Interest Entities [Line Items]    
Unpaid principal balance of mortgage loans 524,962 $ 490,358
Multifamily | Unconsolidated VIEs    
Variable Interest Entities [Line Items]    
Unpaid principal balance of mortgage loans $ 525,000