Income Taxes (Tables)

12 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

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

The components of federal and state income taxes included in the Consolidated Statements of Income are as follows:

	Year Ended September 30
	2015			2014			2013
	(Thousands)
Current Income Taxes —
Federal	$	25,064		$	34,579		$	(632	)
State	13,387			12,620			5,503
Deferred Income Taxes —
Federal	(244,336		)	116,143			130,318
State	(113,251		)	26,272			37,569
	(319,136		)	189,614			172,758
Deferred Investment Tax Credit	(414		)	(434		)	(426		)
Total Income Taxes	$	(319,550	)	$	189,180		$	172,332
Presented as Follows:
Other Income	$	(414	)	$	(434	)	$	(426	)
Income Tax Expense (Benefit)	(319,136		)	189,614			172,758
Total Income Taxes	$	(319,550	)	$	189,180		$	172,332

Schedule Of Income Tax Reconciliation By Applying Federal Income Tax Rate

The following is a reconciliation of this difference:

	Year Ended September 30
	2015			2014			2013
	(Thousands)
U.S. Income (Loss) Before Income Taxes	$	(698,977	)	$	488,593		$	432,333
Income Tax Expense (Benefit), Computed at U.S. Federal Statutory Rate of 35%	$	(244,642	)	$	171,008		$	151,317
State Income Taxes (Benefit)	(64,912		)	25,280			27,997
Miscellaneous	(9,996		)	(7,108		)	(6,982		)
Total Income Taxes	$	(319,550	)	$	189,180		$	172,332

Significant Components Of Deferred Tax Liabilities And Assets

Significant components of the Company’s deferred tax liabilities and assets were as follows:

	At September 30
	2015			2014
	(Thousands)
Deferred Tax Liabilities:
Property, Plant and Equipment	$	1,291,718		$	1,614,515
Pension and Other Post-Retirement Benefit Costs	141,032			113,248
Unrealized Hedging Gains	118,522			37,051
Other	51,230			50,884
Total Deferred Tax Liabilities	1,602,502			1,815,698
Deferred Tax Assets:
Pension and Other Post-Retirement Benefit Costs	(168,451		)	(124,452		)
Tax Loss and Credit Carryforwards	(185,681		)	(171,423		)
Other	(110,408		)	(103,863		)
Total Deferred Tax Assets	(464,540		)	(399,738		)
Total Net Deferred Income Taxes	$	1,137,962		$	1,415,960
Presented as Follows:
Deferred Tax Liability/(Asset) — Current	$	(137,200	)	$	(40,323	)
Deferred Tax Liability — Non-Current	1,275,162			1,456,283
Total Net Deferred Income Taxes	$	1,137,962		$	1,415,960

Reconciliation Of The Change In Unrecognized Tax Benefits

The following is a reconciliation of the change in unrecognized tax benefits:

	Year Ended September 30
	2015			2014			2013
	(Thousands)
Balance at Beginning of Year	$	3,147		$	2,001		$	11,170
Additions for Tax Positions Related to Current Year	—			—			700
Additions for Tax Positions of Prior Years	2,504			2,447			164
Reductions for Tax Positions of Prior Years	(566		)	(1,301		)	(10,033		)
Balance at End of Year	$	5,085		$	3,147		$	2,001