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COMMITMENTS AND CONTINGENCIES - Environmental Matters Narrative (Details) - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
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Site Contingency [Line Items] |  |
Reserve balance | $ 144.8 | $ 128.0
MGP Sites |  |
Site Contingency [Line Items] |  |
Reserve balance | $ 132.8 | $ 115.9

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