Capital (Regulatory Capital Rules and Requirements) (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Banking Regulation, Total Capital [Abstract] | ||||
| Risk-based capital, Required | $ 1,576 | $ 1,418 | ||
| Risk-based capital, Actual | $ 9,033 | $ 8,602 | ||
| Total regulatory capital ratio, Required | 4.00% | 4.00% | ||
| Total regulatory capital ratio, Actual | 5.48% | 5.88% | ||
| Total regulatory capital, Required | [1] | $ 6,599 | $ 5,849 | |
| Total regulatory capital, Actual | [1] | $ 9,033 | $ 8,602 | |
| Leverage capital ratio, Required | 5.00% | 5.00% | ||
| Leverage capital ratio, Actual | 8.21% | 8.82% | ||
| Leverage capital, Required | $ 8,249 | $ 7,312 | ||
| Leverage capital, Actual | $ 13,550 | $ 12,904 | ||
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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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