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Composition Of Certain Financial Statement Captions (Schedule Of Other Non-Current Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Composition Of Certain Financial Statement Captions [Abstract]
Supplemental retirement plan obligations	$ 3,902	$ 4,127
Non-current tax liabilities	93,465	83,758
Other liabilities	10,799	12,237
Total other non-current liabilities	$ 108,166	$ 100,122

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Composition Of Certain Financial Statement Captions [Abstract]

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Non-Current Tax Liabilities

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Amount of liability, classified as noncurrent, for retirement benefits, classified as other.

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Obligations not otherwise itemized or categorized in the footnotes to the financial statements that are expected to be paid after one year (or the normal operating cycle, if longer), from the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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