Capital (Capital Requirements) (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Banking Regulation, Total Capital [Abstract] | ||
| Risk-Based Capital, Required | $ 825 | $ 1,004 |
| Risk-Based Capital, Actual | 7,077 | 7,321 |
| Regulatory Capital, Required | 2,663 | 2,933 |
| Regulatory Capital, Actual | $ 7,077 | $ 7,321 |
| Regulatory Capital Ratio, Required | 4.00% | 4.00% |
| Regulatory Capital Ratio, Actual | 10.63% | 9.98% |
| Leverage Capital, Required | $ 3,329 | $ 3,666 |
| Leverage Capital, Actual | $ 10,615 | $ 10,981 |
| Leverage ratio - Required | 5.00% | 5.00% |
| Leverage Ratio, Actual | 15.94% | 14.97% |
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- Definition Leverage ratio requirement as defined in the regulations. No definition available.
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- Definition Regulatory capital ratio requirement as defined in the regulations. No definition available.
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- References No definition available.
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- Definition Amount of leveraged capital of Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Minimum amount of leverage capital required for Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Leverage ratio of Federal Home Loan Bank (FHLBank), calculated per regulations of the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of regulatory capital of Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Regulatory capital ratio of Federal Home Loan Bank (FHLBank), calculated per regulations of the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Minimum amount of regulatory capital required for Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of risk-based capital of Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Minimum amount of risk-based capital required for Federal Home Loan Bank (FHLBank), set by the Federal Housing Finance Agency (FHFA). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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