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COMMITMENTS AND CONTINGENCIES (Tables)
3 Months Ended
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedule of regulatory assets and reserves related to manufactured gas plant sites
We have established the following regulatory assets and reserves for manufactured gas plant sites:
(in millions)March 31, 2025December 31, 2024
Regulatory assets$540.7 $570.1 
Reserves for future environmental remediation442.1 445.8