Leases (Tables)

12 Months Ended

Sep. 30, 2025

Leases [Abstract]

Schedule of Balance Sheet Information

The Company's leases are included in its Consolidated Balance Sheets as follows:

	As of September 30, 2025			As of September 30, 2024
Finance Lease
Property, Plant, and Equipment, Net	$	28.3		$	30.8
Total Finance Lease Assets	$	28.3		$	30.8
Current finance lease liabilities	$	3.4		$	3.4
Non Current Finance Lease Liabilities	28.7			30.2
Total Finance Lease Liabilities	$	32.1		$	33.6
Weighted-average remaining lease term (years)	11.5			12.5
Weighted-average discount rate	6.8		%	6.8		%
Operating Leases
Deferred Income Taxes and Other Assets	$	20.2		$	22.6
Total Operating Lease Assets	$	20.2		$	22.6
Accrued expenses	$	6.9		$	6.0
Deferred Income Taxes and Other Liabilities	10.2			11.9
Total Operating Lease Liabilities	$	17.1		$	17.9
Weighted-average remaining lease term (years)	5.6			6.3
Weighted-average discount rate	6.6		%	6.5		%

Schedule of Supplemental Cash Flow Information

Lease costs incurred are as follows:

(in millions)	Classification	2025		2024		2023
Operating lease expense	Selling and administrative and Research and Development expense	$	6.3	$	7.5	$	4.5
Finance lease cost:
Depreciation of lease assets	Cost of products sold	2.5		2.5		2.4
Interest on lease liabilities	Interest expense, net	2.3		2.4		2.4
Total lease cost		$	11.1	$	12.4	$	9.3

Supplemental cash flow information related to leases was as follows as of September 30, 2025, 2024 and 2023:

	September 30, 2025		September 30, 2024		September 30, 2023
Right of use assets obtained in exchange for lease liabilities
Finance Lease	$	—	$	—	$	—
Operating Leases	2.2		3.0		19.0

	September 30, 2025		September 30, 2024		September 30, 2023
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from Operating Leases	$	5.8	$	6.4	$	2.9
Financing cash flows from Finance Lease	1.4		1.3		1.2
Operating cash flows from Finance Lease	2.3		2.4		2.4

Schedule of Maturities of Finance Lease Liabilities

Maturities of the Company's finance and operating lease liabilities as of September 30, 2025 by fiscal year are as follows:

	Finance Leases		Operating Leases		Total
2026	$	3.7	$	5.9	$	9.6
2027	3.8		2.6		6.4
2028	3.9		2.0		5.9
2029	3.9		2.1		6.0
2030	4.0		1.8		5.8
Thereafter	28.3		5.7		34.0
Total lease payments	$	47.6	$	20.1	$	67.7
Less: amount representing interest	15.5		3.0		18.5
Present value of lease liabilities	$	32.1	$	17.1	$	49.2

Schedule of Maturities of Operating Lease Liabilities

Maturities of the Company's finance and operating lease liabilities as of September 30, 2025 by fiscal year are as follows:

	Finance Leases		Operating Leases		Total
2026	$	3.7	$	5.9	$	9.6
2027	3.8		2.6		6.4
2028	3.9		2.0		5.9
2029	3.9		2.1		6.0
2030	4.0		1.8		5.8
Thereafter	28.3		5.7		34.0
Total lease payments	$	47.6	$	20.1	$	67.7
Less: amount representing interest	15.5		3.0		18.5
Present value of lease liabilities	$	32.1	$	17.1	$	49.2