Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Provision For Income Taxes

The provision for income taxes is comprised of the following:

	Years Ended December 31,
	2012		2011			2010
	(In thousands)
Current
Federal	$	797,406	$	499,535		$	30,999
State	135,148		91,316			4,473
Deferred
Federal	70,671		(9,679		)	21,796
State	24,737		819			2,044
	$	1,027,962	$	581,991		$	59,312

Reconciliation Of Effective Tax Rate

The statutory federal income tax rate applied to pre-tax book income reconciles to income tax expense as follows:

	Years Ended December 31,
	2012			2011			2010
	(In thousands)
Tax computed at statutory rate	$	975,798		$	574,682		$	67,327
State income taxes, net of federal tax benefit	110,739			64,284			4,372
Domestic production activities deduction	(54,745		)	(32,194		)	(940		)
Noncontrolling interest in net income	(12,783		)	(14,221		)	(11,315		)
Uncertain tax positions	7,309			(12,125		)	—
Other	1,644			1,565			(132		)
	$	1,027,962		$	581,991		$	59,312

Deferred Tax Assets And Liabilities

Our deferred income tax assets and liabilities as of December 31, 2012 and 2011 are as follows:

	December 31, 2012
	Assets		Liabilities			Total
	(In thousands)
Deferred income taxes
Accrued employee benefits	$	13,285	$	—		$	13,285
Accrued post-retirement benefits	—		(563		)	(563		)
Accrued environmental costs	5,096		—			5,096
Hedging instruments	23,927		—			23,927
Inventory differences	—		(181,634		)	(181,634		)
Prepayments and other	—		(5,327		)	(5,327		)
Total current	42,308		(187,524		)	(145,216		)
Properties, plants and equipment (due primarily to tax in excess of book depreciation)	—		(539,338		)	(539,338		)
Accrued post-retirement benefits	15,628		—			15,628
Accrued environmental costs	18,963		—			18,963
Hedging instruments	3,802		—			3,802
Deferred turnaround costs	—		(60,167		)	(60,167		)
Net operating loss and tax credit carryforwards	21,863		—			21,863
Investment in HEP	—		(15,915		)	(15,915		)
Debt fair value premiums	8,820		—			8,820
Contingent liabilities	2,908		—			2,908
Other	6,766		—			6,766
Total noncurrent	78,750		(615,420		)	(536,670		)
Total	$	121,058	$	(802,944	)	$	(681,886	)

	December 31, 2011
	Assets		Liabilities			Total
	(In thousands)
Deferred income taxes
Accrued employee benefits	$	22,791	$	—		$	22,791
Accrued post-retirement benefits	4,012		—			4,012
Accrued environmental costs	2,253		—			2,253
Inventory differences	—		(161,428		)	(161,428		)
Deferred turnaround costs	—		(356		)	(356		)
Prepayments and other	37,442		(80,397		)	(42,955		)
Total current	66,498		(242,181		)	(175,683		)
Properties, plants and equipment (due primarily to tax in excess of book depreciation)	—		(511,788		)	(511,788		)
Accrued post-retirement benefits	41,873		—			41,873
Accrued environmental costs	4,651		—			4,651
Deferred turnaround costs	—		(22,971		)	(22,971		)
Investment in HEP	—		(13,389		)	(13,389		)
Other	42,618		(4,715		)	37,903
Total noncurrent	89,142		(552,863		)	(463,721		)
Total	$	155,640	$	(795,044	)	$	(639,404	)

Reconciliation Of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	Years Ended December 31,
	2012			2011			2010
	(In thousands)
Balance at January 1	$	2,425		$	1,864		$	1,964
Additions due to merger with Frontier	—			22,577			—
Additions for tax positions of prior years	10,305			73			6
Reductions for tax positions of prior years	(89		)	(204		)	(106		)
Settlements	—			(21,679		)	—
Reductions for statute limitations	—			(206		)	—
Balance at December 31	$	12,641		$	2,425		$	1,864