ENVIRONMENTAL (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Environmental Remediation Obligations [Abstract]
Reserves for future environmental expenditures - total	$ 153.5	$ 149.3	$ 153.5	$ 149.3	$ 146.6
Reserves for future environmental expenditures - noncurrent	128.5	124.3	128.5	124.3	$ 121.6
Environmental Remediation Expense	$ 6.9	$ 7.4	$ 23.1	$ 18.0