RESTRUCTURING COSTS - Schedule of Changes in Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 44.2	$ 10.4
Paid/Utilized	(4.0)	(2.7)
Expense	(4.9)	1.1
Restructuring reserve, ending balance	35.3	8.8
Severance and benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	44.1	10.3
Paid/Utilized	(3.8)	(2.0)
Expense	(5.0)	0.4
Restructuring reserve, ending balance	35.3	8.7
Plant closing and other
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.1	0.1
Paid/Utilized	(0.2)	(0.7)
Expense	0.1	0.7
Restructuring reserve, ending balance	$ 0.0	$ 0.1