Income Taxes (Tables)

3 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components Of Federal And State Income Taxes Included In The Consolidated Statements Of Income

	Three Months Ended
	December 31,
	2011	2010
Current Income Taxes
Federal	$(7)	$-
State	1,334	1,452
Deferred Income Taxes
Federal	31,338	29,936
State	8,060	6,664
	40,725	38,052
Deferred Investment Tax Credit	(145)	(174)
Total Income Taxes	$40,580	$37,878
Presented as Follows:
Other Income	$(145)	$(174)
Income Tax Expense	40,725	38,052
Total Income Taxes	$40,580	$37,878

Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate

	Three Months Ended
	December 31,
	2011	2010
U.S. Income Before Income Taxes	$101,279	$96,421
Income Tax Expense, Computed at U.S. Federal
Statutory Rate of 35%	$35,448	$33,747
Increase (Reduction) in Taxes Resulting from:
State Income Taxes	6,106	5,275
Miscellaneous	(974)	(1,144)
Total Income Taxes	$40,580	$37,878

Significant Components Of Deferred Tax Liabilities And Assets

	At December 31, 2011	At September 30, 2011
Deferred Tax Liabilities:
Property, Plant and Equipment	$1,116,690	$1,062,255
Pension and Other Post-Retirement Benefit Costs	213,170	217,302
Other	67,876	70,389
Total Deferred Tax Liabilities	1,397,736	1,349,946
Deferred Tax Assets:
Pension and Other Post-Retirement Benefit Costs	(262,571)	(263,606)
Tax Loss Carryforwards	(83,199)	(71,516)
Other	(75,082)	(74,863)
Total Deferred Tax Assets	(420,852)	(409,985)
Total Net Deferred Income Taxes	$976,884	$939,961
Presented as Follows:
Net Deferred Tax Liability/(Asset) – Current	$(14,921)	$ (15,423)
Net Deferred Tax Liability – Non-Current	991,805	955,384
Total Net Deferred Income Taxes	$976,884	$939,961