v3.26.1
Capital (Details) - USD ($)
Jun. 30, 2026
Jun. 23, 2026
Mar. 23, 2026
Dec. 31, 2025
Capital [Line Items]        
Minimum Capital Stock to Assets Ratio, Percent Required 2.00%     2.00%
Federal Home Loan Bank, Risk-Based Capital, Required $ 1,294,266,000     $ 1,230,921,000
Federal Home Loan Bank, Risk-Based Capital, Actual 6,614,069,000     6,573,370,000
Federal Home Loan Bank, Regulatory Capital, Required 4,310,739,000     4,340,481,000
Federal Home Loan Bank, Regulatory Capital, Actual $ 6,614,069,000     $ 6,573,370,000
Regulatory Capital Ratio, Required 4.00%     4.00%
Federal Home Loan Bank, Regulatory Capital Ratio, Actual 6.14%     6.06%
Federal Home Loan Bank, Leverage Capital, Required $ 5,388,423,000     $ 5,425,601,000
Federal Home Loan Bank, Leverage Capital, Actual $ 9,921,103,000     $ 9,860,055,000
Federal Home Loan Bank, Leverage Ratio, Actual 9.21%     9.09%
Leverage Ratio, Required 5.00%     5.00%
Membership Investment Requirement, Percent of Members Total Assets as of Previous Calendar Year 0.04%      
Membership Investment Requirement, Minimum Dollar Amount $ 1,000      
Membership Investment Requirement, Maximum Dollar Amount $ 7,000,000      
Activity Based Investment Requirement, Percent of Outstanding Advances 4.10%      
Surplus Stock Threshold Percentage 110.00% 110.00% 110.00%  
Minimum Stock Surplus Required For Repurchase $ 1,000,000 $ 1,000,000 $ 1,000,000  
Repurchased Surplus Stock, Total   202,936,000 461,181,000  
RepurchasedSurplusStockMRCSPortion   $ 16,637,000 $ 47,284,000  
Activity Based Investment Requirement, Percent of Outstanding LOCs 0.10%      
Advances Funded Under Special Advances Program Remaining Balance $ 1,694,083,000      
Activity Based Investment Requirement, Reduced Percentage, Funded Advance Programs 2.00%      
Excess Capital Stock $ 800,000,000      
Excess Capial Stock, Percent of Total Assets 0.71%      
Capital Stock to Assets Ratio 3.14%