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v3.22.2

Short-Term Debt And Liquidity (Narrative) (Details) $ in Billions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 | Jun. 30, 2022 USD ($) | Jun. 30, 2021
Credit Agreements |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Net Liquidity Available | $ 1.3 |  | $ 1.3 |
Actual debt-to-capital ratio | 0.59 |  | 0.59 |
Utilities |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Short-term Debt, Weighted Average Interest Rate, over Time | 0.98% | 0.22% | 0.69% | 0.22%
Union Electric Company | Missouri Credit Agreement |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Actual debt-to-capital ratio | 0.51 |  | 0.51 |
Ameren Illinois Company | Illinois Credit Agreement |  |  |  |
Short-term Debt [Line Items] |  |  |  |
Actual debt-to-capital ratio | 0.44 |  | 0.44 |

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