v3.26.1
Capital (Dividends and Retained Earnings) (Details) - USD ($)
6 Months Ended
Jul. 24, 2026
Apr. 24, 2026
Feb. 20, 2026
Apr. 25, 2025
Feb. 21, 2025
Jun. 30, 2026
Dec. 31, 2025
Capital [Line Items]              
Joint Capital Enhancement Agreement Percentage           20.00%  
Percent of Average Balance of Outstanding Consolidated Obligations Required per the Joint Capital Enhancement Agreement For Each Previous Quarter           1.00%  
Unrestricted           $ 1,530,907,000 $ 1,462,288,000
Restricted           803,821,000 783,372,000
Retained Earnings (Accumulated Deficit)           2,334,728,000 2,245,660,000
Subclass B1 [Member]              
Capital [Line Items]              
Common Stock, Value, Outstanding           354,100,000 338,900,000
Dividends Cash, Annualized Rate   4.85% 4.85% 4.60% 5.10%    
Subclass B1 [Member] | Subsequent Event [Member]              
Capital [Line Items]              
Dividends Cash, Annualized Rate 5.50%            
Subclass B2 [Member]              
Capital [Line Items]              
Common Stock, Value, Outstanding           $ 3,549,000,000 $ 1,953,300,000
Dividends Cash, Annualized Rate   9.50% 9.50% 9.00% 9.00%    
Subclass B2 [Member] | Subsequent Event [Member]              
Capital [Line Items]              
Dividends Cash, Annualized Rate 9.75%