Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Taxes [Abstract]

Schedule Of Components Of Income And Loss From Continuing Operations Before Income Taxes

	Years Ended December 31,
	2015		2014		2013
Domestic	$	(2,069,019)	$	372,672	$	165,463
Foreign		9,236		69,517		(64,706)
	$	(2,059,783)	$	442,189	$	100,757

Schedule Of Components Of Income Tax Expense (Benefit)

	Years Ended December 31,
	2015		2014		2013
Current:
Federal	$	(952)	$	150,997	$	19,897
State		2,818		11,339		10,816
Foreign		19,227		36,287		25,613
		21,093		198,623		56,326
Deferred:
Federal		(249,193)		(33,172)		(6,341)
State		(10,034)		648		386
Foreign		(13,886)		(4,700)		4,901
		(273,113)		(37,224)		(1,054)
	$	(252,020)	$	161,399	$	55,272

Schedule Of Effective Income Tax Rate Reconciliation

	Years Ended December 31,
	2015		2014		2013
Computed expected tax expense	$	(720,923)	$	154,766	$	35,265
Increase (decrease) resulting from
State and foreign income taxes		(6,353)		8,467		(852)
Reduction in value of assets		464,395		-		34,874
Other		10,861		(1,834)		(14,015)
Income tax	$	(252,020)	$	161,399	$	55,272

Schedule Of Deferred Tax Assets and Liabilities

	December 31,
	2015		2014
Deferred tax assets:
Allowance for doubtful accounts	$	8,275	$	3,942
Operating loss and tax credit carryforwards		92,798		21,928
Compensation and employee benefits		59,310		57,045
Decommissioning liabilities		30,400		21,029
Other		57,768		50,641
		248,551		154,585
Valuation allowance		(5,395)		-
Net deferred tax assets		243,156		154,585
Deferred tax liabilities:
Property, plant and equipment		469,728		648,054
Notes receivable		14,796		5,718
Goodwill and other intangible assets		119,661		138,017
Other		22,040		33,654
Deferred tax liabilities		626,225		825,443
Net deferred tax liability	$	383,069	$	670,858

Summary Of Activity In Unrecognized Tax Benefits

	Years Ended December 31,
	2015		2014		2013
Unrecognized tax benefits,     December 31, 2014, 2013 and 2012, respectively	$	30,344	$	29,899	$	26,399
Additions based on tax positions related to current year		-		-		-
Additions based on tax positions related to prior years		6,752		7,860		5,065
Reductions based on tax positions related to prior years		(7,381)		(7,415)		(1,565)
Unrecognized tax benefits,     December 31, 2015, 2014 and 2013, respectively	$	29,715	$	30,344	$	29,899