v3.25.4
ASSET RETIREMENT OBLIGATIONS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Balance at beginning of year $ 22.4 $ 21.7
Liabilities settled (0.3) (0.6)
Liabilities incurred 3.0 2.3
Accretion expense 0.0 0.2
Revision of estimate 7.4 (1.2)
Balance at end of year $ 32.5 $ 22.4