Income Taxes (Earnings Before Income Taxes by Geographical Area) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
United States	$ 122,389	$ 99,427	$ 136,280
Other countries	153,379	100,471	109,519
Earnings before income taxes	$ 275,768	$ 199,898	$ 245,799