Income Taxes (Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
U.S. Income (Loss) Before Income Taxes	$ (348,645)	$ 404,284
Income Tax Expense (Benefit), Computed at U.S. Federal Statutory Rate of 35%	(122,026)	141,499
Increase (Reduction) in Taxes Resulting from State Income Taxes	(32,209)	26,285
Increase (Reduction) in Taxes Resulting From Miscellaneous	(2,686)	(5,483)
Total Income Taxes	$ (156,921)	$ 162,301
Federal Statutory Rate	35.00%	35.00%