RESTRUCTURING CHARGES (Tables)

6 Months Ended

Mar. 31, 2026

Restructuring and Related Activities [Abstract]

Schedule of Reconciliation of Beginning and Ended Restructuring Reserve Balances

The following is a reconciliation of the beginning and ending restructuring reserve balances for the six months ended March 31, 2026:

(in millions)	Employee Separation Costs		Other Costs		Total
Balance at September 30, 2025	$	21.3	$	0.4	$	21.7
Costs incurred and charged to expense	12.3		6.7		19.0
Costs paid or otherwise settled	(16.7)		(6.9)		(23.6)
Balance at March 31, 2026	$	16.9	$	0.2	$	17.1

Schedule of Reconciliation of Total Amounts Expected to be Incurred from Open Restructuring Plans Anticipated to be Realized

The following is a reconciliation of the total amounts expected to be incurred from open restructuring plans or plans that are being formulated and have not been announced as of the filing date of this Form 10-Q. Remaining amounts expected to be incurred were $25.6 million as of March 31, 2026:

(in millions)	Total Amounts Expected to be Incurred		Amounts Incurred During the Six Months Ended March 31, 2026		Amounts Remaining to be Incurred
Customized Polymer Solutions
Employee separation costs	$	2.5	$	2.0	$	0.5
Other restructuring costs	0.8		0.8		—
	3.3		2.8		0.5
Durable Metal Solutions
Employee separation costs	5.5		3.5		2.0
Other restructuring costs	7.3		1.6		5.7
	12.8		5.1		7.7
Sustainable Fiber Solutions
Employee separation costs	8.2		6.7		1.5
Other restructuring costs	19.9		4.3		15.6
	28.1		11.0		17.1
Innovative Closure Solutions
Employee separation costs	0.4		0.1		0.3
Other restructuring costs	—		—		—
	0.4		0.1		0.3
	$	44.6	$	19.0	$	25.6