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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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CC&V - Carlton Tunnel |  |
Loss Contingencies [Line Items] |  |
Study and the technological solution | 3 years |
Additional study and the technological solution | 3 years |
Surety Bond |  |
Loss Contingencies [Line Items] |  |
Environmental bonding obligation, outstanding | $ 496.2 | $ 153.0

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