v3.25.3
Schedule of Long-term Debt by Call Feature (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Short-term and Long-term Debt [Line Items]    
Par amounts for the FHLBanks' outstanding Consolidated Obligation $ 1,184,100,000 $ 1,193,000,000
Bond premiums 21,080 21,576
Bond discounts (7,358) (8,766)
Concession fees (6,800) (6,848)
Fair value hedging adjustments (138,797) (336,283)
Total book value 59,653,325 87,965,104
Long-term Debt, Gross 59,785,200 88,295,425
Fixed Interest Rate [Member]    
Schedule of Short-term and Long-term Debt [Line Items]    
Long-term Debt, Gross 30,550,200 26,415,025
Step-up Interest Rate [Member] [Member]    
Schedule of Short-term and Long-term Debt [Line Items]    
Long-term Debt, Gross 1,100,000 1,341,000
Variable interest rate [Member]    
Schedule of Short-term and Long-term Debt [Line Items]    
Long-term Debt, Gross $ 28,135,000 $ 60,539,400