Consolidated Obligations Narrative (Details) - USD ($) $ in Billions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Schedule of Short-term and Long-term Debt [Line Items] | ||
| Obligation with Joint and Several Liability Arrangement, Amount Outstanding | $ 1,131.7 | $ 977.4 |
| FHLBanks [Member] | ||
| Schedule of Short-term and Long-term Debt [Line Items] | ||
| Obligation with Joint and Several Liability Arrangement, Amount Outstanding | $ 1,330.8 | $ 1,151.8 |