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Income Taxes (Components Of Federal And State Income Taxes Included In The Consolidated Statements Of Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Current Income Taxes - Federal	$ 19,707	$ 0
Current Income Taxes - State	5,625	2,549
Deferred Income Taxes - Federal	23,206	34,903
Deferred Income Taxes - State	6,887	6,097
Income Tax Expense	55,425	43,549
Deferred Investment Tax Credit	(109)	(107)
Total Income Taxes	55,316	43,442
Other Income	(109)	(107)
Income Tax Expense	$ 55,425	$ 43,549

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.