v3.26.1
Segment Reporting - Schedule of Segment Reporting (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Net interest income $ 7,493 $ 7,155 $ 14,691 $ 14,156
Fee and other income 72 86 154 170
Net revenues 7,565 7,241 14,845 14,326
Fair value gains (losses), net (76) 211 45 334
Investment gains (losses), net 53 (19) (224) (20)
Other gains (losses), net (23) 192 (179) 314
(Provision) benefit for credit losses (485) (946) (762) (970)
Non-interest expense:        
Administrative expenses (811) (847) (1,556) (1,839)
Legislative assessments (934) (939) (1,865) (1,870)
Credit enhancement expense (361) (400) (719) (879)
Total non-interest expense (2,068) (2,333) (4,251) (4,932)
Income before federal income taxes 4,989 4,154 9,653 8,738
Provision for federal income taxes (1,007) (837) (1,951) (1,760)
Net income 3,982 3,317 7,702 6,978
Related Party | US Treasury        
Non-interest expense:        
Legislative assessments (934) (939) (1,865) (1,870)
Business segments        
Non-interest expense:        
Other income (expense), net 38 (147) (111) (344)
Business segments | Single-Family        
Segment Reporting [Line Items]        
Net interest income 6,248 5,992 12,226 11,858
Fee and other income 53 69 114 134
Net revenues 6,301 6,061 12,340 11,992
Fair value gains (losses), net (35) 197 169 279
Investment gains (losses), net 50 (20) (207) (19)
Other gains (losses), net 15 177 (38) 260
(Provision) benefit for credit losses (226) (737) (329) (761)
Non-interest expense:        
Administrative expenses (650) (687) (1,251) (1,499)
Credit enhancement expense (278) (318) (558) (725)
Other income (expense), net (87) (131) (177) (304)
Total non-interest expense (1,939) (2,054) (3,828) (4,366)
Income before federal income taxes 4,151 3,447 8,145 7,125
Provision for federal income taxes (873) (711) (1,693) (1,471)
Net income 3,278 2,736 6,452 5,654
Business segments | Single-Family | Related Party | US Treasury        
Non-interest expense:        
Legislative assessments (924) (918) (1,842) (1,838)
Business segments | Multifamily        
Segment Reporting [Line Items]        
Net interest income 1,245 1,163 2,465 2,298
Fee and other income 19 17 40 36
Net revenues 1,264 1,180 2,505 2,334
Fair value gains (losses), net (41) 14 (124) 55
Investment gains (losses), net 3 1 (17) (1)
Other gains (losses), net (38) 15 (141) 54
(Provision) benefit for credit losses (259) (209) (433) (209)
Non-interest expense:        
Administrative expenses (161) (160) (305) (340)
Credit enhancement expense (83) (82) (161) (154)
Other income (expense), net 125 (16) 66 (40)
Total non-interest expense (129) (279) (423) (566)
Income before federal income taxes 838 707 1,508 1,613
Provision for federal income taxes (134) (126) (258) (289)
Net income 704 581 1,250 1,324
Business segments | Multifamily | Related Party | US Treasury        
Non-interest expense:        
Legislative assessments $ (10) $ (21) $ (23) $ (32)