Income Taxes (Tax Expense and Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Earnings before income taxes	$ 109,720	$ 31,749
Income tax expense	$ 19,676	$ 2,143
Effective tax rate	17.90%	6.70%