v3.26.1
Commitments and Contingencies (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Commitments and Contingencies [Line Items]    
Derivative, Collateral, Right to Reclaim Cash $ 207,798 $ 335,802
Derivative, Collateral, Right to Reclaim Securities 287,845 475,374
Other FHLBanks [Member]    
Commitments and Contingencies [Line Items]    
Debt, Gross 1,234,000,000  
Loan Origination Commitments [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 2,701 2,336
Standby Letters of Credit [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 30,532,836 33,099,489
Financial Standby Letter of Credit [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring in 2027 123,436  
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring in 2028 131,837  
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring in 2029 315,452  
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring in 2030 250,735  
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Expiring in 2031 75,171  
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 896,631 929,869
Consolidated Obligation Bonds [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 2,615,000 530,000
Consolidated Obligation Discount Notes [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability 110,000 1,008,320
Conventional Mortgage Loan [Member]    
Commitments and Contingencies [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability $ 33,748 $ 25,952