Income Taxes (Tax Expense and Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 122,096	$ 105,738	$ 352,440	$ 177,728
Income tax expense	$ 20,021	$ 21,139	$ 62,765	$ 28,012
Effective tax rate	16.40%	20.00%	17.80%	15.80%