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Borrowing Arrangements (Components Of Long-Term Debt) (Details) - USD ($)	Dec. 31, 2021	Sep. 30, 2021
Debt instrument	$ 452,000,000.0	$ 452,200,000
Deferred financing costs	(5,100,000)	(5,300,000)
Current portion of long-term debt	(1,000,000.0)	(1,000,000.0)
Long-term debt	445,900,000	445,900,000
Line of Credit Facility, Remaining Borrowing Capacity	133.8
Unsecured Debt [Member]
5.5% Senior Notes	450,000,000.0	450,000,000.0
Other [Member]
Debt instrument	$ 2,000,000.0	$ 2,200,000

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- Definition

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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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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