Income Taxes (Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. Income Before Income Taxes	$ 139,796	$ 137,568
Income Tax Expense, Computed at U.S. Federal Statutory Rate of 35%	48,929	48,149
Increase (Reduction) in Taxes Resulting from State Income Taxes	8,085	8,133
Increase (Reduction) in Taxes Resulting From Miscellaneous	(1,958)	(966)
Total Income Taxes	$ 55,056	$ 55,316
Federal Statutory Rate	35.00%	35.00%