Debt - Short-Term Debt (Details) - Held by Freddie Mac - USD ($) $ in Millions |
Sep. 30, 2025 |
Dec. 31, 2024 |
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| Short-term Debt [Abstract] | ||
| Short-term debt par value | $ 38,491 | $ 14,716 |
| Short-term Debt | $ 38,255 | $ 14,675 |
| Short-term debt weighted average effective rate | 4.20% | 4.59% |
| Variable Rate | Callable Short Term Notes [Member] | ||
| Short-term Debt [Abstract] | ||
| Short-term debt par value | $ 1,000 | $ 0 |
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- Definition Par value of total other short-term debt. No definition available.
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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