v3.26.3
Consolidated Obligations - Interest Rate Payment Terms of Consolidated Obligation Bonds (Details) - Hedged Consolidated obligation bonds - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total par value $ 105,178,595 $ 68,408,655
Percentage of Total 100.00% 100.00%
Fixed-rate, non-callable    
Debt Instrument [Line Items]    
Total par value $ 15,086,395 $ 22,142,355
Percentage of Total 14.34% 32.37%
Fixed-rate, callable    
Debt Instrument [Line Items]    
Total par value $ 15,017,800 $ 15,927,800
Percentage of Total 14.28% 23.28%
Step Up, callable    
Debt Instrument [Line Items]    
Total par value $ 455,000 $ 1,132,000
Percentage of Total 0.43% 1.65%
Step Down, callable    
Debt Instrument [Line Items]    
Total par value $ 52,000 $ 52,000
Percentage of Total 0.05% 0.08%
Floating rate, callable    
Debt Instrument [Line Items]    
Total par value $ 2,120,000 $ 25,000
Percentage of Total 2.02% 0.04%
Single-index floating rate    
Debt Instrument [Line Items]    
Total par value $ 72,447,400 $ 29,129,500
Percentage of Total 68.88% 42.58%