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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
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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