EXIT AND DISPOSAL ACTIVITIES - Schedule of Restructuring and Related Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 1.0	$ 9.3	$ 10.4
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 0.0	$ 0.6	$ 0.1
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of goods sold	Cost of goods sold	Cost of goods sold
Selling, general & administrative expense
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 1.0	$ 8.7	$ 10.3
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense	Selling, General and Administrative Expense