v3.26.1
Segment Reporting - Schedule of Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Net interest income $ 7,198 $ 7,001
Fee and other income 82 84
Net revenues 7,280 7,085
Fair value gains (losses), net 121 123
Investment gains (losses), net (277) (1)
Other gains (losses), net (156) 122
(Provision) benefit for credit losses (277) (24)
Non-interest expense:    
Administrative expenses (745) (992)
Legislative assessments (931) (931)
Credit enhancement expense (358) (479)
Total non-interest expense (2,183) (2,599)
Income before federal income taxes 4,664 4,584
Provision for federal income taxes (944) (923)
Net income 3,720 3,661
Related Party | US Treasury    
Non-interest expense:    
Legislative assessments (931) (931)
Business segments    
Non-interest expense:    
Other income (expense), net (149) (197)
Business segments | Single-Family    
Segment Reporting Information [Line Items]    
Net interest income 5,978 5,866
Fee and other income 61 65
Net revenues 6,039 5,931
Fair value gains (losses), net 204 82
Investment gains (losses), net (257) 1
Other gains (losses), net (53) 83
(Provision) benefit for credit losses (103) (24)
Non-interest expense:    
Administrative expenses (601) (812)
Credit enhancement expense (280) (407)
Other income (expense), net (90) (173)
Total non-interest expense (1,889) (2,312)
Income before federal income taxes 3,994 3,678
Provision for federal income taxes (820) (760)
Net income 3,174 2,918
Business segments | Single-Family | Related Party | US Treasury    
Non-interest expense:    
Legislative assessments (918) (920)
Business segments | Multifamily    
Segment Reporting Information [Line Items]    
Net interest income 1,220 1,135
Fee and other income 21 19
Net revenues 1,241 1,154
Fair value gains (losses), net (83) 41
Investment gains (losses), net (20) (2)
Other gains (losses), net (103) 39
(Provision) benefit for credit losses (174) 0
Non-interest expense:    
Administrative expenses (144) (180)
Credit enhancement expense (78) (72)
Other income (expense), net (59) (24)
Total non-interest expense (294) (287)
Income before federal income taxes 670 906
Provision for federal income taxes (124) (163)
Net income 546 743
Business segments | Multifamily | Related Party | US Treasury    
Non-interest expense:    
Legislative assessments $ (13) $ (11)