Income Taxes (Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Income Taxes [Abstract]
U.S. Income Before Income Taxes	$ 356,262	$ 282,665
Income Tax Expense, Computed at U.S. Federal Statutory Rate of 35%	124,692	98,933
Increase (Reduction) in Taxes Resulting from State Income Taxes	25,726	16,845
Increase (Reduction) in Taxes Resulting From Miscellaneous	(6,315)	(4,388)
Total Income Taxes	$ 144,103	$ 111,390
Federal Statutory Rate	35.00%	35.00%