Income Taxes (Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. Income (Loss) Before Income Taxes	$ (333,546)	$ 139,796
Income Tax Expense (Benefit), Computed at U.S. Federal Statutory Rate of 35%	(116,741)	48,929
State Income Taxes (Benefit)	(24,972)	8,085
Miscellaneous	(2,724)	(1,958)
Total Income Taxes	$ (144,437)	$ 55,056
Federal Statutory Rate	35.00%	35.00%