Statements of Condition (Parenthetical) - USD ($) shares in Millions, $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| AFS securities, allowance for credit losses | $ 44 | $ 32 |
| Amortized Cost: Total | 19,704 | 20,144 |
| HTM securities, fair value | 571 | 892 |
| Advances, fair value under the fair value option | 1,879 | 5,441 |
| Mortgage loans held for portfolio, allowance for credit losses | 1 | 1 |
| Portion at Fair Value Measurement | ||
| Advances, fair value under the fair value option | 1,879 | 5,441 |
| Bonds, fair value under the fair value option | $ 80 | $ 357 |
| Class B Putable | ||
| Capital stock, par value | $ 100 | |
| Capital stock, Shares, Outstanding | 26 | |
| Capital stock, Shares, Issued | 26 | |
| Class B-1 Putable | ||
| Capital stock, par value | $ 100 | |
| Capital stock, Shares, Outstanding | 16 | |
| Capital stock, Shares, Issued | 16 | |
| Class B-2 Putable | ||
| Capital stock, par value | $ 100 | |
| Capital stock, Shares, Outstanding | 8 | |
| Capital stock, Shares, Issued | 8 |
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- Definition Fair value of Federal Home Loan Bank (FHLBank) advances carried under the fair value option. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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