Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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No definition available.

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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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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Financing Agreements (Schedule of Total Debt) (Details) - USD ($)	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Apr. 23, 2021	Sep. 30, 2020	Oct. 07, 2019
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ (37,600,000)	$ (37,600,000)
Long-term Debt, by Current and Noncurrent [Abstract]
Unsecured debenture interest rate					4.375%
Debt Instrument, Face Amount					$ 425,000,000.0
Revolving credit facility, matures September 2021	238,400,000			$ 222,300,000
Total Long-term debt	1,482,200,000			1,655,700,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	10,000,000.0			9,000,000.0
Long-term Debt, by Current and Noncurrent [Abstract]
Revolving credit facility, matures September 2021	160,000,000.0
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,030,000,000.0			1,191,000,000.0
Senior Unsecured 5.00% Notes due on February 14, 2025 [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Unsecured debenture interest rate	5.00%
Debt Instrument, Face Amount	$ 300,000,000.0				$ 425.0
Securitization Program [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Revolving credit facility, matures September 2021	98,300,000			82,200,000
Debt Instrument, Face Amount			$ 110,000,000.0
Note Securitization Facility [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Revolving credit facility, matures September 2021	$ 90,000,000.0			$ 90,000,000.0
Debt Instrument, Face Amount			$ 90,000,000.0