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Borrowing Arrangements (Components Of Long-Term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Sep. 30, 2023	May 28, 2021
Long-term Debt, Gross	$ 452.3	$ 451.3
Deferred financing costs	3.4	3.9
Current portion of long-term debt	0.7	0.7
Long-term debt	448.2	446.7
Unsecured Debt [Member]
4.0% Senior Notes	450.0	450.0
Long-term Debt, Gross			$ 450.0
Other [Member]
Finance Lease, Liability	$ 2.3	$ 1.3

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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Present value of lessee's discounted obligation for lease payments from finance lease.

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