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Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2025
Accounting Policies [Abstract] |
Schedule of Other Assets and Other Liabilities | The following table presents the carrying values of AMF’s assets and liabilities included on Ameren’s and Ameren Missouri’s consolidated balance sheets as of December 31, 2025 :
| 2025 |  | 2024 |
Unbilled revenue (a) | $ | 2 |  |  | $ | — |  |
Other current assets(a)(b) | 21 |  |  | 2 |  |
Noncurrent regulatory assets(a) | 443 |  |  | 465 |  |
Current maturities of long term debt(c) | 23 |  |  | 17 |  |
Interest accrued (c) | 6 |  |  | 1 |  |
Current regulatory liabilities(d) | 11 |  |  | — |  |
Long-term debt, net(c) | 426 |  |  | 448 |  |
(a)Assets may be used only to meet AMF’s obligations and commitments. (b)Included in “Restricted cash” on Ameren Missouri’s balance sheet. (c)The securitized tariff bondholders have no recourse to Ameren Missouri. (d)Included in “Other current liabilities” on Ameren Missouri’s balance sheet.

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- Definition Tabular disclosure of assets and liabilities, classified as other. + References No definition available. + Details
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