Advances Redemption Terms (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Advances by Redemption Terms [Line Items]
Deposit Liabilities Reclassified as Loans Receivable	$ 0	$ 576
Weighted Average Interest Rate on Overdrawn Demand Deposit	0.00%	3.72%
Federal Home Loan Bank, Advances, Maturities Summary, in Next Rolling Twelve Months	$ 24,157,589	$ 22,406,895
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Next Twelve Rolling Months	3.79%	3.95%
Federal Home Loan Bank, Advances, Maturities Summary, in Rolling Year Two	$ 11,715,991	$ 15,634,197
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Two	3.75%	3.63%
Federal Home Loan Bank, Advances, Maturities Summary, in Rolling Year Three	$ 2,431,500	$ 6,251,402
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Three	4.07%	4.10%
Federal Home Loan Bank, Advances, Maturities Summary, in Rolling Year Four	$ 1,424,965	$ 1,514,170
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Four	3.85%	4.17%
Federal Home Loan Bank, Advances, Maturities Summary, in Rolling Year Five	$ 1,068,170	$ 1,182,382
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Five	3.84%	3.92%
Federal Home Loan Bank, Advances, Maturities Summary in Rolling Year Six Through Rolling Year Fifteen	$ 3,495,624	$ 3,837,323
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Six Through Rolling Year Fifteen	3.32%	3.27%
Federal Home Loan Bank, Advances, Maturities Summary, after Rolling Year Fifteen	$ 11,717	$ 13,320
Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing after Rolling Year Fifteen	3.39%	3.47%
Federal Home Loan Bank Advances Par Value	$ 44,305,556	$ 50,840,265
Federal Home Loan Bank, Advances, Weighted Average Interest Rate	3.76%	3.83%
Deferred Prepayment Fees	$ (1,858)	$ (2,329)
Federal Home Loan Bank Advances, Valuation Adjustments For Hedging Activities	(88,651)	(17,830)
Federal Home Loan Bank Advances	$ 44,215,047	$ 50,820,106

[Line Items] for Advances by Redemption Terms

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Deferred Prepayment Fees on Advances

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No definition available.

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- Definition

Federal Home Loan Bank, Advances, Maturities Summary, after Rolling Year Fifteen

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- Definition

Federal Home Loan Bank, Advances, Maturities Summary in Rolling Year Six Through Rolling Year Fifteen

+ References

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- Definition

Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing after Rolling Year Fifteen

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Federal Home Loan Bank, Advances, Weighted Average Interest Rate, Maturing in Rolling Year Six Through Rolling Year Fifteen

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- Definition

Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478353/942-405-50-1

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Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions.

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Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the fourth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the third rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Par amount of advances made and reported by Federal Home Loan Bank (FHLBank).

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Amount of accumulated increase (decrease) on advances made and reported by Federal Home Loan Bank (FHLBank) from hedging adjustments.

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- Definition

Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank).

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the next rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the fourth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank maturing in the third rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate on advances made and reported by Federal Home Loan Bank (FHLBank) maturing in the second rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate on overdrawn demand deposit.

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