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Environmental Matters (Tables) | 3 Months Ended
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Mar. 31, 2024
Text Block [Abstract] |
Environmental Obligations Recognized by Company | The following table sets forth a summary of changes in the Company’s liability for Environmental Obligations for the three months ended March 31, 2024 and 2023.
Environmental Obligations (millions) |
|  | March 31, |
|  | 2024 |  |  | 2023 |
Total Balance at Beginning of Period |  | $ | 4.6 |  |  | $ | 4.4 |
Additions |  |  | 0.3 |  |  |  | 0.5 |
Less: Payments / Reductions |  |  | 0.1 |  |  |  | 0.2 |
Total Balance at End of Period |  |  | 4.8 |  |  |  | 4.7 |
Less: Current Portion |  |  | 0.7 |  |  |  | 0.6 |
Noncurrent Balance at End of Period |  | $ | 4.1 |  |  | $ | 4.1 |

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