v3.25.3
Financial Guarantees (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Guarantor Obligations [Line Items]    
Assets in VIE in which we do not have a variable interest in $ 1,100 $ 700
CRT Related Derivatives    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 1,900 2,000
Guarantees of Fannie Mae securities    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 99,228 104,120
Maximum exposure 99,228 104,120
Recognized Liability $ 0 $ 0
Maximum Remaining Term 36 years 37 years
Other Guarantees    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance $ 66 $ 79
Maximum exposure 416 472
Recognized Liability $ 0 $ 0
Maximum Remaining Term 30 years 30 years
Single-family    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance $ 37,604 $ 37,979
Maximum exposure 32,141 32,411
Recognized Liability 553 540
Single-family | Securitization products    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 30,219 30,038
Maximum exposure 24,756 24,470
Recognized Liability $ 450 $ 413
Maximum Remaining Term 40 years 39 years
Single-family | Other mortgage-related guarantees    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance $ 7,385 $ 7,941
Maximum exposure 7,385 7,941
Recognized Liability $ 103 $ 127
Maximum Remaining Term 27 years 27 years
Multifamily    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance $ 352,850 $ 365,954
Maximum exposure 318,173 328,442
Recognized Liability 4,145 4,583
Multifamily | Securitization products    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 342,483 355,108
Maximum exposure 307,818 317,611
Recognized Liability $ 3,805 $ 4,219
Maximum Remaining Term 35 years 35 years
Multifamily | Other mortgage-related guarantees    
Guarantor Obligations [Line Items]    
Unpaid Principal Balance $ 10,367 $ 10,846
Maximum exposure 10,355 10,831
Recognized Liability $ 340 $ 364
Maximum Remaining Term 33 years 34 years