Earnings Per Share (Reconciliation of Net Earnings to Net Earnings Per Share Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net earnings	$ 87,091	$ 90,044
Denominator:
Basic shares outstanding	59,216	60,021
Dilutive effect of stock options; restricted and performance stock	1,925	1,825
Diluted shares outstanding	61,141	61,846
Income per common share:
Basic earnings per share	$ 1.47	$ 1.5
Diluted earnings per share	$ 1.42	$ 1.46