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Supplemental Statement of Cash Flows Information (Schedule of Supplemental Statement of Cash Flows Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized			$ 14,238	$ 14,146
Income taxes paid			20,843	65,283
Income tax refunds received			12,143	11,012
Non-cash activities:
Purchases of property, plant and equipment on account			2,040	2,325
Impact of the adoption of ASC 842				255
Common shares issued from treasury stock for benefit plans	$ 14,900	$ 14,748	$ 14,900	$ 14,748

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Non Cash Activities Impact Of Adoption ASC 606

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