Statements of Condition (Unaudited) Parenthetical - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
ASSETS
Held-to-maturity securities, Fair Value	$ 989,648	$ 1,048,632
Derivative, Collateral, Right to Reclaim Securities	347,962	475,374
Debt Securities, Available-for-sale, Amortized Cost	18,745,712	19,125,045
Other Assets, Fair Value Disclosure	25,817	24,997
Liabilities [Abstract]
Non-interest bearing deposits	38	38
Transactions with Other FHLBanks (Note 18)	0	0
Accrued interest payable	$ 395,385	$ 356,354
Capital Stock - Class B-1 - Membership/Excess
CAPITAL (Note 14)
Common Stock, Par or Stated Value Per Share	$ 100	$ 100
Common Stock, Shares, Issued	10,303,207	12,636,851
Common Stock, Shares, Outstanding	10,303,207	12,636,851
Capital Stock Class B-2 - Activity
CAPITAL (Note 14)
Common Stock, Par or Stated Value Per Share	$ 100	$ 100
Common Stock, Shares, Issued	17,224,190	20,746,739
Common Stock, Shares, Outstanding	17,224,190	20,746,739
Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]
ASSETS
Derivative, Collateral, Right to Reclaim Securities	$ 0	$ 360,297
Trading Securities
ASSETS
Derivative, Collateral, Right to Reclaim Securities	347,962	115,077
Trading Securities \| Asset Pledged as Collateral with Right
ASSETS
Derivative, Collateral, Right to Reclaim Securities	206,939	0
Asset Pledged as Collateral with Right
ASSETS
Derivative, Collateral, Right to Reclaim Securities	0	303,565
Conventional Mortgage Loan [Member]
ASSETS
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 8,673	$ 8,554

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