v3.26.1
ASSET RETIREMENT OBLIGATIONS - Schedule of Reconciliations of Asset Retirement Obligations (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
ARO liability balance at beginning of period $ 456.5 $ 427.4
Liabilities incurred 0.0 0.0
Liabilities settled (3.0) (5.9)
Accretion expense 5.0 4.3
Revisions, net 1.5 3.7
ARO liability balance at end of period $ 460.0 $ 429.5