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DEBT (Tables)

12 Months Ended

Sep. 30, 2025

Debt Disclosure [Abstract]

Schedule of Debt

Debt as of September 30, 2025 and 2024 consist of the following:

						2025												2024
(in millions)						Amount						Rate						Amount						Rate
Revolver Facility, variable rate, expiring October 19, 2028						$	—					—		%				$	—					—		%
3.375% Exchangeable Notes, due June 1, 2029						350.0						3.4		%				350.0						3.4		%
5.00% Notes, due October 1, 2029						4.9						5.0		%				4.9						5.0		%
5.50% Notes, due July 15, 2030						13.2						5.5		%				13.2						5.5		%
3.875% Notes, due March 15, 2031						128.0						3.9		%				128.0						3.9		%
Obligations under finance leases						85.3						5.6		%				81.6						5.4		%
Total debt						581.4												577.7
Debt issuance costs						(13.5)												(16.9)
Less current portion						(11.7)												(9.4)
Long-term debt, net of current portion						$	556.2											$	551.4

Schedule of Maturities of Debt Obligations

The aggregate scheduled maturities of debt obligations are as follows, excluding obligations under finance leases. See Note 10 - Leases for scheduled maturities of obligations under finance leases:

(in millions)						Amount
2026						$	—
2027						—
2028						—
2029						350.0
2030						18.1
Thereafter						128.0
Total long-term debt						$	496.1

Schedule of Long-Term Debt Instruments

The following summarizes the results of the cash tender of the Tendered Offer and full redemption of the 2026 Notes (excluding amounts paid for unpaid and accrued interest), the write-off of unamortized debt issuance costs and loss (gain) from early extinguishment of debt realized during the year ended September 30, 2024.

(in millions)						Amounts Tendered						Amounts Paid						Premium (Discount) Realized						Unamortized Debt Issuance Costs						Loss (Gain) on Early Extinguishment
2026 Notes						$	462.0					$	462.1					$	0.1					$	2.2					$	2.3
2029 Notes						284.2						284.2						—						2.9						2.9
2030 Notes						142.5						142.5						—						2.0						2.0
2031 Notes						285.7						277.7						(8.0)						3.0						(5.0)
Total						$	1,174.4					$	1,166.5					$	(7.9)					$	10.1					$	2.2

Schedule of Debt Repurchase Activity

The following summarizes the repurchase activity for each of the respective Senior Notes, including the amounts paid (excluding amounts paid for unpaid and accrued interest) for debt repurchases, the write-off of unamortized debt issuance costs and gain from early extinguishment realized during the years ended September 30, 2024 and 2023.

						2024																								2023
(in millions)						Amounts Repurchased						Amounts Paid						Unamortized Debt Issuance Costs						Gain Realized						Amounts Repurchased						Amounts Paid						Unamortized Debt Issuance Costs						Gain Realized
2029 Notes						$	8.1					$	7.8					$	0.1					$	0.2					$	2.8					$	2.6					$	—					$	0.2
2030 Notes						132.8						130.5						2.0						0.3						11.5						10.7						0.2						0.6
2031 Notes						39.2						34.6						0.4						4.2						47.1						39.4						0.6						7.1
Total						$	180.1					$	172.9					$	2.5					$	4.7					$	61.4					$	52.7					$	0.8					$	7.9

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