Credit Facilities, Short-term Borrowings and Long-term Debt (Narrative) (Details) $ in Thousands	9 Months Ended	12 Months Ended
Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Debt Instrument [Line Items]
Short-term debt	$ 23,500	$ 66,800
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,000,000
Line of credit facility, maximum borrowing capacity extension	1,500,000
Principal amount borrowing outstanding	$ 23,500	$ 66,800
Effective interest rate	0.0633	0.0424
Foreign Lines of Credit and Overdraft Facilities [Member]
Debt Instrument [Line Items]
Short-term debt	$ 0	$ 0
Second Amended And Restated Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Debt issuance costs	2,236
Deferred debt issuance costs remaining	1,046
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Balance of unamortized debt issuance costs, line of credit	$ 1,233	$ 1,046
Minimum [Member] \| SOFR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Maximum [Member] \| SOFR [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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

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

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

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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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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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- Definition

Effective interest rate.

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- Definition

Maximum borrowing capacity under the credit facility that the facility can be extended to subject to lenders’ consideration and without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Principal amount outstanding.

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