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v3.22.2.2

Short-Term Debt And Liquidity (Narrative) (Details) $ in Billions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2021 | Sep. 30, 2022 USD ($) | Sep. 30, 2021
Credit Agreements |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Net Liquidity Available | $ 1.1 |  | $ 1.1 |
Actual debt-to-capital ratio | 0.59 |  | 0.59 |
Utilities |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Short-term Debt, Weighted Average Interest Rate, over Time | 2.48% | 0.06% | 1.29% | 0.17%
Union Electric Company | Missouri Credit Agreement |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Actual debt-to-capital ratio | 0.49 |  | 0.49 |
Ameren Illinois Company | Illinois Credit Agreement |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Actual debt-to-capital ratio | 0.45 |  | 0.45 |

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