DEBT (Tables)

12 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Schedule of Debt

Debt as of September 30, 2024 and 2023 consist of the following:

	2024				2023
(in millions)	Amount		Rate		Amount		Rate
3.375% Exchangeable Notes, due June 1, 2029	$	350.0	3.4	%	$	—	—	%
4.00% Notes, due October 1, 2026	—		—	%	448.8		4.0	%
5.00% Notes, due October 1, 2029	4.9		5.0	%	297.2		5.0	%
5.50% Notes, due July 15, 2030	13.2		5.5	%	288.5		5.5	%
3.875% Notes, due March 15, 2031	128.0		3.9	%	453.0		3.9	%
Obligations under finance leases	81.6		5.4	%	86.4		5.3	%
Total debt	577.7				1,573.9
Debt issuance costs	(16.9)				(18.4)
Less current portion	(9.4)				(8.6)
Long-term debt, net of current portion	$	551.4			$	1,546.9

Schedule of Maturities of Debt Obligations

The aggregate scheduled maturities of debt obligations are as follows, excluding obligations under capital leases. See Note 12 - Leases for scheduled maturities of obligations under capital leases:

(in millions)	Amount
2025	$	—
2026	—
2027	—
2028	—
2029	350.0
Thereafter	146.1
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 on Early Extinguishment		Amounts Repurchased		Amounts Paid		Unamortized Debt Issuance Costs		Gain on Early Extinguishment
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