Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Components Of Income (Loss) Before Income Taxes

The components of income (loss) before income taxes are as follows:

	Year Ended December 31,
	2014			2013			2012
Domestic	$	1,102,101		$	944,378		$	586,631
Foreign	(18,183		)	(2,206		)	(1,462		)
	$	1,083,918		$	942,172		$	585,169

Schedule Of The Provision For (Benefit From) Income Taxes

The Company's provision for (benefit from) income taxes consists of the following:

	Year Ended December 31,
	2014			2013			2012
Current
Federal	$	300,610		$	215,903		$	190,917
State	37,351			22,249			15,327
Foreign	1,974			(137		)	(837		)
	339,935			238,015			205,407
Deferred
Federal	40,950			94,471			(5,398		)
State	22,714			(556		)	(519		)
Foreign	(4,697		)	(183		)	124
	58,967			93,732			(5,793		)
Total provision	$	398,902		$	331,747		$	199,614

Reconciliation Of Taxes Computed At The Statutory Rate To Income Tax Expense

A reconciliation of taxes computed at the statutory rate to the Company's income tax expense is as follows:

	Year Ended December 31,
	2014			2013			2012
Provision for federal income tax, at statutory rate	$	379,371		$	329,760		$	204,809
State income tax provision, net of federal income tax effect	40,012			14,364			9,625
Foreign income tax rate differential	3,640			519			(201		)
Manufacturing deduction	(24,465		)	(16,275		)	(14,560		)
Contingent tax liability	(1,626		)	(404		)	—
Noncontrolling interests	(2,255		)	—			—
Other, net	4,225			3,783			(59		)
	$	398,902		$	331,747		$	199,614

Schedule Of Deferred Tax Assets And Liabilities

The tax effects of the principal temporary differences between financial reporting and income tax reporting at December 31 are as follows:

	2014			2013
Net operating loss carryforward	$	18,200		$	11,324
Credit carryforward	694			708
Accruals	62,845			32,352
Allowance for doubtful accounts	1,998			2,068
Inventories	11,437			15,440
Other	7,660			6,666
Deferred taxes assets—total	102,834			68,558
Property, plant and equipment	(398,683		)	(434,561		)
Turnaround costs	(2,289		)	(26,002		)
Basis difference—consolidated partnerships	(194,480		)	—
Other	—			(478		)
Deferred tax liabilities—total	(595,452		)	(461,041		)
Valuation allowance	(11,011		)	(11,324		)
Total net deferred tax liabilities	$	(503,629	)	$	(403,807	)
Balance sheet classifications
Current deferred tax asset	$	32,437		$	34,169
Noncurrent deferred tax liability	(536,066		)	(437,976		)
Total net deferred tax liabilities	$	(503,629	)	$	(403,807	)

Schedule Of Changes In Gross Unrecognized Tax Benefits

The gross unrecognized tax benefits at December 31 are as follows:

	2014			2013			2012
Beginning balance	$	2,501		$	3,122		$	3,122
Reductions due to statutes of limitations expiring	(2,501		)	(621		)	—
Ending balance	$	—		$	2,501		$	3,122