Supplemental Statement of Cash Flows Information (Schedule of Supplemental Statement of Cash Flows Information) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized		$ 30,021	$ 31,116
Income taxes paid		105,554	60,334
Income tax refunds received		6,171	1,459
Non-cash activities:
Purchases of property, plant and equipment on account		4,208	2,612
Common shares issued from treasury to settle benefit obligations	$ 1,050	$ 22,937	$ 19,467