DEBT - Schedule of Debt (Details) - USD ($) $ in Millions	Mar. 30, 2025	Feb. 28, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Total debt	$ 656.9		$ 577.7
Debt issuance costs	(15.4)		(16.9)
Less current portion	(9.5)		(9.4)
Long-term debt, net of current portion	632.0		551.4
3.375% Exchangeable Notes, due June 1, 2029
Debt Instrument [Line Items]
Secured debt	$ 350.0		$ 350.0
Stated interest rate	3.375%	3.375%	3.40%
5.00% Notes, due October 1, 2029
Debt Instrument [Line Items]
Secured debt	$ 4.9		$ 4.9
Stated interest rate	5.00%		5.00%
5.50% Notes, due July 15, 2030
Debt Instrument [Line Items]
Secured debt	$ 13.2		$ 13.2
Stated interest rate	5.50%		5.50%
3.875% Notes, due March 15, 2031
Debt Instrument [Line Items]
Secured debt	$ 128.0		$ 128.0
Stated interest rate	3.875%		3.90%
Obligations under finance leases
Debt Instrument [Line Items]
Stated interest rate	5.40%		5.40%
Obligations under finance leases	$ 77.8		$ 81.6
Revolving Credit Facility
Debt Instrument [Line Items]
Revolver facility	$ 83.0		$ 0.0
Stated interest rate	6.20%		0.00%

Amount of short-term and long-term debt and lease obligation.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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