Income Taxes (Tax Expense and Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 105,738	$ 50,287	$ 177,728	$ 142,129
Income tax expense	$ 21,139	$ 10,841	$ 28,012	$ 24,472
Effective tax rate	20.00%	21.60%	15.80%	17.20%