v3.25.3
ENVIRONMENTAL (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Environmental Remediation Obligations [Abstract]          
Reserves for future environmental expenditures - total $ 154.7 $ 154.2 $ 154.7 $ 154.2 $ 156.5
Reserves for future environmental expenditures - noncurrent 124.7 122.2 124.7 122.2 $ 126.5
Environmental Remediation Expense 5.5 7.2 15.3 19.4  
Insurance Recoveries (1.0) 0.0 (1.0) 0.0  
Environmental Expense and Liabilities $ 4.5 $ 7.2 $ 14.3 $ 19.4