Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Loss Contingencies [Line Items]
The FHLBank's outstanding consolidated obligations for which the Bank is jointly and severally liable	$ 1,178,455	$ 1,017,701
Other liabilities	400	782
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Other liabilities	$ 169	$ 158

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount of liabilities classified as other.

+ References

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+ Details