Income Taxes (Components Of Federal And State Income Taxes Included In The Consolidated Statements Of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Current Income Taxes [Abstract]
Federal	$ 0	$ (10)	$ (42,548)
State	12,214	8,699	6,974
Deferred Income Taxes [Abstract]
Federal	137,025	90,970	4,538
State	(32,610)	15,023	49,775
Total Income Taxes	$ 116,629	$ 114,682	$ 18,739