View Filing Data

Deferred compensation liabilities

750,000

Subordinated notes

1,850,000

2,350,000

Deferred tax liabilities

843,189

997,494

Derivative liabilities

111

117,137

178,599

Asset retirement obligations and other liabilities

299,973

284,994

Total liabilities

5,313,222

5,289,351

Commitments and contingencies

Stockholders’ Equity

Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding

Common stock, $0.01 par, 475,000,000 shares authorized, 169,369,535 issued at September 30, 2015 and 168,711,131 issued at December 31, 2014

1,693

1,687

Common stock held in treasury, 60,015 shares at September 30, 2015 and 82,954 shares at December 31, 2014

(2,275)

(3,088)

Additional paid-in capital

2,439,075

2,400,475

Retained earnings

646,189

1,058,355

Total stockholders’ equity

3,084,682

3,457,429

Total liabilities and stockholders’ equity

$ 8,397,904

$ 8,746,780

[1]	Includes capitalized asset retirement costs and the associated accumulated amortization.

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 3,306	$ 2,719
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	475,000,000	475,000,000
Common stock, shares issued	169,369,535	168,711,131
Common stock held in treasury, shares	60,015	82,954

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues and other income:
Natural gas, NGLs and oil sales	$ 252,065	$ 446,067	$ 835,601	$ 1,495,601
Derivative fair value income (loss)	202,004	142,057	290,052	(28,902)
(Loss) gain on the sale of assets	(681)	167	2,053	281,878
Brokered natural gas, marketing and other	25,864	28,324	61,688	90,904
Total revenues and other income	479,252	616,615	1,189,394	1,839,481
Costs and expenses:
Direct operating	35,058	37,792	106,975	112,522
Transportation, gathering and compression	99,634	84,777	284,258	235,747
Production and ad valorem taxes	7,336	10,110	26,506	32,632
Brokered natural gas and marketing	32,331	28,706	80,924	97,610
Exploration	4,235	11,443	17,146	39,910
Abandonment and impairment of unproved properties	12,366	13,444	36,187	32,771
General and administrative	46,178	54,963	150,471	161,063
Termination costs	(77)	0	6,290	0
Deferred compensation plan	(43,705)	(46,198)	(56,611)	(37,714)
Interest	42,904	39,188	125,590	130,077
Loss on early extinguishment of debt	22,495	0	22,495	24,596
Depletion, depreciation and amortization	153,993	142,450	453,178	404,493
Impairment of proved properties and other assets	502,233	0	502,233	24,991
Total costs and expenses	914,981	376,675	1,755,642	1,258,698
(Loss) income before income taxes	(435,729)	239,940	(566,248)	580,783
Income tax (benefit) expense:
Current	0	0	0	5
Deferred	(134,781)	93,522	(174,390)	230,450
Total income tax expense (benefit)	(134,781)	93,522	(174,390)	230,455
Net (loss) income	$ (300,948)	$ 146,418	$ (391,858)	$ 350,328
Net (loss) income per common share:
Basic	$ (1.81)	$ 0.87	$ (2.36)	$ 2.11
Diluted	(1.81)	0.86	(2.36)	2.10
Dividends paid per common share	$ 0.04	$ 0.04	$ 0.12	$ 0.12
Weighted average common shares outstanding:
Basic	166,517	165,841	166,327	162,866
Diluted	166,517	166,460	166,327	163,685

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Sep. 30, 2015

Sep. 30, 2014

Statement Of Income And Comprehensive Income [Abstract]

Net (loss) income

$ (300,948)

$ 146,418

$ (391,858)

$ 350,328

Other comprehensive income:

De-designated hedges reclassified into natural gas, NGLs and oil sales, net of taxes

^[1]

(2,172)

(6,458)

Total comprehensive (loss) income

$ (300,948)

$ 144,246

$ (391,858)

$ 343,870

[1]

Amounts are net of income tax benefit of $1,332 for the three months ended September 30, 2014 and $4,122 for the nine months ended September 30, 2014. As of March 31, 2013, we elected to discontinue hedge accounting prospectively and as of December 31, 2014, all remaining accumulated other comprehensive income (“AOCI”) hedging gains had been transferred to earnings.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Statement Of Income And Comprehensive Income [Abstract]
De-designated hedges reclassified into natural gas, NGLs and oil sales, tax portion	$ 1,332	$ 4,122

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating activities:
Net (loss) income	$ (391,858)	$ 350,328
Adjustments to reconcile net (loss) income to net cash provided from operating activities:
Loss from equity method investments, net of distributions	0	3,096
Deferred income tax (benefit) expense	(174,390)	230,450
Depletion, depreciation and amortization and impairment	955,411	429,484
Exploration dry hole costs	87	1
Abandonment and impairment of unproved properties	36,187	32,771
Derivative fair value (income) loss	(290,052)	28,902
Cash settlements on derivative financial instruments that do not qualify for hedge accounting	360,645	(113,859)
Allowance for bad debt	600	250
Amortization of deferred financing costs, loss on extinguishment of debt and other	27,572	31,430
Deferred and stock-based compensation	(10,679)	15,486
Gain on the sale of assets	(2,053)	(281,878)
Changes in working capital:
Accounts receivable	79,448	13,098
Inventory and other	(7,073)	(5,335)
Accounts payable	(13,158)	(13,355)
Accrued liabilities and other	(55,127)	(65,931)
Net cash provided from operating activities	515,560	654,938
Investing activities:
Additions to natural gas and oil properties	(901,227)	(867,285)
Additions to field service assets	(2,878)	(9,492)
Acreage purchases	(61,213)	(145,543)
Other	(75)	1,103
Proceeds from disposal of assets	14,825	147,126
Purchases of marketable securities held by the deferred compensation plan	(23,594)	(23,053)
Proceeds from the sales of marketable securities held by the deferred compensation plan	28,168	25,206
Net cash used in investing activities	(945,994)	(871,938)
Financing activities:
Borrowing on credit facilities	1,940,000	1,682,000
Repayment on credit facilities	(1,676,000)	(1,533,000)
Issuance of senior notes	750,000	0
Repayment of subordinated notes	(516,875)	(312,000)
Debt issuance costs	(14,156)	0
Dividends paid	(20,308)	(19,862)
Issuance of common stock, net of offering expenses	0	396,580
Change in cash overdrafts	(40,123)	(12,305)
Proceeds from the sales of common stock held by the deferred compensation plan	7,938	15,707
Net cash provided from financing activities	430,476	217,120
Increase in cash and cash equivalents	42	120
Cash and cash equivalents at beginning of period	448	348
Cash and cash equivalents at end of period	$ 490	$ 468

Summary of Organization and Nature of Business	9 Months Ended
Summary of Organization and Nature of Business	Sep. 30, 2015
Industry Specific Policies [Abstract]
Summary of Organization and Nature of Business	(1) SUMMARY OF ORGANIZATION AND NATURE OF BUSINESS Range Resources Corporation (“Range,” “we,” “us,” or “our”) is a Fort Worth, Texas-based independent natural gas, natural gas liquids (“NGLs”) and oil company primarily engaged in the exploration, development and acquisition of natural gas and oil properties in the Appalachian and Midcontinent regions of the United States. Our objective is to build stockholder value through consistent growth in reserves and production on a cost-efficient basis. Range is a Delaware corporation with our common stock listed and traded on the New York Stock Exchange under the symbol “RRC.”

Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	(2) BASIS OF PRESENTATION These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Range Resources Corporation 2014 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 24, 2015. The results of operations for the third quarter and the nine months ended September 30, 2015 are not necessarily indicative of the results to be expected for the full year. These consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for fair presentation of the results for the periods presented. All adjustments are of a normal recurring nature unless otherwise disclosed. These consolidated financial statements, including selected notes, have been prepared in accordance with the applicable rules of the SEC and do not include all of the information and disclosures required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) for complete financial statements.

New Accounting Standards	9 Months Ended
New Accounting Standards	Sep. 30, 2015
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Standards	(3) NEW ACCOUNTING STANDARDS Not Yet Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued an accounting standard for “Revenue from Contracts with Customers,” which supersedes the revenue recognition requirements in “Topic 605, Revenue Recognition” and requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In July 2015, the FASB approved a one-year deferral of the effective date of this new standard. Consequently, the new guidance is effective for us for the reporting period beginning January 1, 2018, with early adoption permitted in first quarter 2017. Entities have the option of using either a fully retrospective or modified approach to adopt the new standard. We are currently evaluating the new guidance and have not determined the impact this standard may have on our financial statements or decided upon the method of adoption. In August 2014, the FASB issued an accounting standards update that requires management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in United States auditing standards. This standard is effective for us in first quarter 2017 and early adoption is permitted. We do not expect the adoption of this standard to have any impact on our consolidated results of operations, financial position or cash flows. In April 2015, the FASB issued an accounting standards update, “Interest-Imputation of Interest: Simplifying the Presentation of Debt Issuance Cost” which requires entities to present debt issuance cost related to a recognized debt liability as a direct deduction of the carrying amount of debt in the balance sheet, consistent with the presentation of debt discounts. This standard is effective for us for the reporting period beginning January 1, 2016, with early adoption permitted. Entities will be required to apply the guidance on a retrospective basis to each period presented as a change in accounting principle. Adoption of the new guidance will only affect the presentation of our consolidated balance sheets and will not have a material impact. We will adopt the new standard as of December 31, 2015. Recently Adopted In April 2014, an accounting standards update was issued that raised the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other material disposal transactions that do not meet the revised definition of a discontinued operation. Under the updated standard, a disposal of a component or group of components of an entity is required to be reported as discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results when the component or group of components of the entity (1) has been disposed of by a sale, (2) has been disposed of other than by a sale or (3) is classified as held for sale. This accounting standards update was effective for annual periods beginning on or after December 15, 2014 and was applied prospectively. Early adoption was permitted but only for disposals (or classifications that are held for sale) that had not been reported in financial statements previously issued or available for use. We adopted this new standard in first quarter 2014 and, as a result, the Conger Exchange (see discussion in Note 4 below) is not reported as a discontinued operation.

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56949863&loc=d3e22499-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e765-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
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-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=51655806&loc=d3e725-108305

(Loss) Income Per Common Share

Acquisitions and Dispositions	9 Months Ended
Acquisitions and Dispositions	Sep. 30, 2015
Business Combinations [Abstract]
Acquisitions and Dispositions	(4) ACQUISITIONS AND DISPOSITIONS 2015 Dispositions In third quarter 2015, we sold miscellaneous inventory and surface acreage for proceeds of $524,000 resulting in a pre-tax loss of $681,000. In addition, the first six months 2015 includes the sale of miscellaneous unproved and proved property and inventory for proceeds of $14.3 million resulting in a pre-tax gain of $2.7 million. Included in the $14.3 million of proceeds is $10.5 million received from the sale of certain West Texas properties which closed in February 2015. 2014 Dispositions In addition to the Conger Exchange described below, we sold miscellaneous unproved and proved property and inventory in the nine months ended September 30, 2014 for total proceeds of $2.1 million resulting in a pre-tax gain of $1.7 million. Conger Exchange Transaction In April 2014, we entered into an exchange agreement with EQT Corporation and certain of its affiliates (collectively, “EQT”) in which we sold our Conger assets in Glasscock and Sterling Counties, Texas in exchange for producing properties and gas gathering assets in Virginia and $145.0 million in cash, before closing adjustments (“the Conger Exchange”). We closed the exchange transaction on June 16, 2014 and recognized a pre-tax gain of $285.2 million, before selling expenses of $5.0 million, which is recognized as a gain on sale of assets in our consolidated statements of operations for the nine months ended September 30, 2014. For the period from January 1, 2014 through June 16, 2014, we recognized $21.9 million of field net operating income (defined as natural gas, oil and NGLs sales and net brokered margin less direct operating expenses, production and ad valorem taxes and transportation expenses) for our Conger assets. For the period from June 16, 2014 through September 30, 2014, we recognized $18.4 million of natural gas, oil and NGLs sales from the property interests acquired in the Conger Exchange and we recognized $14.6 million of field net operating income (defined as natural gas, oil and NGLs sales less direct operating expenses, production and ad valorem taxes and transportation expenses).

Income Taxes

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

Income Taxes

(5) INCOME TAXES

Income tax (benefit) expense was as follows (in thousands):

		Three Months Ended September 30,						Nine Months Ended September 30,
		2015			2014			2015			2014
Income tax (benefit) expense	$	(134,781	)	$	93,522		$	(174,390	)	$	230,455
Effective tax rate		30.9	%		39.0	%		30.8	%		39.7	%

We compute our quarterly taxes under the effective tax rate method based on applying an anticipated annual effective rate to our year-to-date income, except for discrete items. The three months and the nine months ended September 30, 2015 includes tax expense of $28.5 million related to an increase in our valuation allowance for federal net operating loss carryforwards that we do not believe are realizable. The three months ended September 30, 2015 includes $8.5 million of income tax expense and the nine months ended September 30, 2015 includes $19.8 million income tax expense related to increases in our valuation allowances for state net operating loss and credit carryforwards that we do not believe are realizable. Income taxes for discrete items are computed and recorded in the period that the specific transaction occurs. For third quarter and the nine months ended September 30, 2015 and 2014, our overall effective tax rate was different than the federal statutory rate of 35% due primarily to state income taxes, valuation allowances and other permanent differences. The three months ended September 30, 2015 also includes an income tax benefit of $2.6 million and the nine months ended September 30, 2015 includes an income tax benefit of $3.5 million adjusting our valuation allowance for our deferred tax asset related to future deferred compensation plan distributions of our senior executives.

(Loss) Income Per Common Share

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

(6) (LOSS) INCOME PER COMMON SHARE

Basic income or loss per share attributable to common shareholders is computed as (1) income or loss attributable to common shareholders (2) less income allocable to participating securities (3) divided by weighted average basic shares outstanding. Diluted income or loss per share attributable to common stockholders is computed as (1) basic income or loss attributable to common shareholders (2) plus diluted adjustments to income allocable to participating securities (3) divided by weighted average diluted shares outstanding. The following tables set forth a reconciliation of income or loss attributable to common shareholders to basic income or loss attributable to common shareholders to diluted income or loss attributable to common shareholders (in thousands except per share amounts):

		Three Months Ended September 30,						Nine Months Ended September 30,
		2015			2014			2015			2014
Net (loss) income, as reported	$	(300,948	)	$	146,418		$	(391,858	)	$	350,328
Participating earnings ^(a)		(114	)		(2,479	)		(338	)		(5,940	)
Basic net (loss) income attributed to common shareholders		(301,062	)		143,939			(392,196	)		344,388
Reallocation of participating earnings ^(a)		¾			9			¾			28
Diluted net (loss) income attributed to common shareholders	$	(301,062	)	$	143,948		$	(392,196	)	$	344,416
Net (loss) income per common share:
Basic	$	(1.81	)	$	0.87		$	(2.36	)	$	2.11
Diluted	$	(1.81	)	$	0.86		$	(2.36	)	$	2.10

^(a)

Restricted Stock Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

The following table provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Weighted average common shares outstanding – basic	166,517	165,841	166,327	162,866
Effect of dilutive securities:
Director and employee stock options and SARs	¾	619	¾	819
Weighted average common shares outstanding – diluted	166,517	166,460	166,327	163,685

Weighted average common shares-basic for the three months ended September 30, 2015 excludes 2.8 million shares of restricted stock and the three months ended September 30, 2014 excludes 2.9 million shares of restricted stock held in our deferred compensation plan (although all awards are issued and outstanding upon grant). Weighted average common shares-basic for both the nine months ended September 30, 2015 and the nine months ended September 30, 2014 excludes 2.8 million shares of restricted stock held in our deferred compensation plan. Due to our net loss from operations for the three months and the nine months ended September 30, 2015, we excluded all outstanding stock appreciation rights (“SARs”) and restricted stock from the computation of diluted net loss per share because the effect would have been anti-dilutive to the computations. For the three months ended September 30, 2014, 351,000 of SARs were outstanding but not included in the computations of diluted income from operations per share because the grant prices of the SARs were greater than the average market price of the common stock. All SARs outstanding for the nine months ended September 30, 2014 were included in the computations of diluted income per share because the grant prices of the SARs were less than the average market price of the common stock.

Suspended Exploratory Well Costs

9 Months Ended

Sep. 30, 2015

Suspended Exploratory Well Costs

(7) SUSPENDED EXPLORATORY WELL COSTS

We capitalize exploratory well costs until a determination is made that the well has either found proved reserves or that it is impaired. Capitalized exploratory well costs are included in natural gas and oil properties in the accompanying consolidated balance sheets. If an exploratory well is determined to be impaired, the well costs are charged to exploration expense in the accompanying consolidated statements of operations. We did not have any exploratory well costs that have been capitalized for a period greater than one year as of December 31, 2014 and September 30, 2015. All exploratory well costs in 2015 are wells drilled in the Marcellus Shale. The following table reflects the change in capitalized exploratory well costs for the nine months ended September 30, 2015 and the year ended December 31, 2014 (in thousands):

		September 30, 2015			December 31, 2014
Balance at beginning of period	$	2,996		$	6,964
Additions to capitalized exploratory well costs pending the determination of proved reserves		61,493			18,747
Reclassifications to wells, facilities and equipment based on determination of proved reserves		¾			(15,735	)
Divested wells		¾			(6,980	)
Balance at end of period		64,489			2,996
Less exploratory well costs that have been capitalized for a period of one year or less		(64,489	)		(2,996	)
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	¾		$	¾

Indebtedness

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Indebtedness

(8) INDEBTEDNESS

We had the following debt outstanding as of the dates shown below (bank debt interest rate at September 30, 2015 is shown parenthetically). No interest was capitalized during the three months or nine months ended September 30, 2015 and September 30, 2014 (in thousands):

	September 30, 2015		December 31, 2014
Bank debt (1.8%)	$	987,000	$	723,000
Senior notes:
4.875% senior notes due 2025		750,000		¾
Senior subordinated notes:
6.75% senior subordinated notes due 2020		¾		500,000
5.75% senior subordinated notes due 2021		500,000		500,000
5.00% senior subordinated notes due 2022		600,000		600,000
5.00% senior subordinated notes due 2023		750,000		750,000
Total debt	$	3,587,000	$	3,073,000

Bank Debt

In October 2014, we entered into an amended and restated revolving bank facility, which we refer to as our bank debt or our bank credit facility, which is secured by substantially all of our assets and has a maturity date of October 16, 2019. The bank credit facility provides for a maximum facility amount of $4.0 billion. On September 30, 2015, the bank commitments were $2.0 billion. The bank credit facility provides for a borrowing base subject to redeterminations annually by May and for event-driven unscheduled redeterminations. As part of our annual redetermination completed on March 31, 2015, our borrowing base was reaffirmed at $3.0 billion and our bank commitment was also reaffirmed at $2.0 billion. As of September 30, 2015, our bank group was composed of twenty-nine financial institutions with no one bank holding more than 6% of the total facility. The bank credit facility amount may be increased to the committed borrowing base amount, subject to the banks agreeing to participate in the facility increase and our payment of a mutually acceptable commitment fee to those banks. As of September 30, 2015, the outstanding balance under our bank credit facility was $987.0 million. Additionally, we had $136.8 million of undrawn letters of credit leaving $876.2 million of committed borrowing capacity available under the facility. During a non-investment grade period, borrowings under the bank credit facility can either be at the alternate base rate (“ABR,” as defined in the bank credit agreement) plus a spread ranging from 0.25% to 1.25% or LIBOR borrowings at the LIBOR Rate (as defined in the bank credit agreement) plus a spread ranging from 1.25% to 2.25%. The applicable spread is dependent upon borrowings relative to the borrowing base. We may elect, from time to time, to convert all or any part of our LIBOR loans to base rate loans or to convert all or any of the base rate loans to LIBOR loans. The weighted average interest rate was 1.7% for the three months ended September 30, 2015 compared to 2.1% for the three months ended September 30, 2014. The weighted average interest rate was 1.7% for the nine months ended September 30, 2015 compared to 2.1% for the nine months ended September 30, 2014. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At September 30, 2015, the commitment fee was 0.30% and the interest rate margin was 1.5% on our LIBOR loans and 0.5% on our base rate loans.

At any time during which we have an investment grade debt rating from Moody’s Investors Service, Inc. or Standard & Poor’s Ratings Services and we have elected, at our discretion, to effect the investment grade rating period, certain collateral security requirements, including the borrowing base requirement and restrictive covenants, will cease to apply and an additional financial covenant (as defined in the bank credit facility) will be imposed. During the investment grade period, borrowings under the credit facility can either be at the ABR plus a spread ranging from 0.125% to 0.75% or at the LIBOR Rate plus a spread ranging from 1.125% to 1.75% depending on our debt rating. The commitment fee paid on the undrawn balance would range from 0.15% to 0.30%. We currently do not have an investment grade debt rating from Moody’s Investors Service, Inc. or Standard & Poor’s Rating Service.

Senior Notes

In May 2015, we issued $750.0 million aggregate principal amount of 4.875% senior notes due 2025 (the “4.875% Notes”) for net proceeds of $737.4 million after underwriting discounts and commissions of $12.6 million. The notes were issued at par. The 4.875% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S of the Securities Act of 1933, as amended (the “Securities Act”). Interest due on the 4.875% Notes is payable semi-annually in May and November and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after February 15, 2025, we may redeem the notes, in whole or in part and from time to time, at 100% of the principal amount, plus accrued and unpaid interest. Upon the occurrence of certain changes in control, we must offer to repurchase the 4.875% Notes. The 4.875% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of Range’s existing and future senior unsecured debt, and rank senior to all of our existing and future subordinated debt. On the closing of the 4.875% Notes, we used the net proceeds to repay borrowings under our bank credit facility pending our intended redemption of all of our 6.75% senior subordinated notes due 2020, which was completed in August 2015 using borrowings under our bank credit facility.

Senior Subordinated Notes

If we experience a change of control, noteholders may require us to repurchase all or a portion of our senior subordinated notes at 101% of the aggregate principal amount plus accrued and unpaid interest, if any. All of the senior subordinated notes and the guarantees by our subsidiary guarantors are general, unsecured obligations and are subordinated to our bank debt and will be subordinated to existing and future senior debt that we or our subsidiary guarantors are permitted to incur under the bank credit facility and the indentures governing the subordinated notes.

Early Extinguishment of Debt

On July 1, 2015, we announced a call for the redemption of $500.0 million of our outstanding 6.75% senior subordinated notes due 2020 at a price of 103.375% of par plus accrued and unpaid interest, which were redeemed on August 3, 2015. In third quarter 2015, we recognized a loss on early extinguishment of debt of $22.5 million, including transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt.

On May 27, 2014, we announced a call for the redemption of $300.0 million of our outstanding 8.0% senior subordinated notes due 2019 at 104.0% of par plus accrued and unpaid interest, which were redeemed on June 26, 2014. In second quarter 2014, we recognized a $24.6 million loss on early extinguishment of debt, including transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt.

Guarantees

Range is a holding company which owns no operating assets and has no significant operations independent of its subsidiaries. The guarantees by our subsidiaries, which are directly or indirectly owned by Range, of our senior notes, senior subordinated notes and our bank credit facility are full and unconditional and joint and several, subject to certain customary release provisions. A subsidiary guarantor may be released from its obligations under the guarantee:

—

in the event of a sale or other disposition of all or substantially all of the assets of the subsidiary guarantor or a sale or other disposition of all the capital stock of the subsidiary guarantor, to any corporation or other person (including an unrestricted subsidiary of Range) by way of merger, consolidation, or otherwise; or

—

if Range designates any restricted subsidiary that is a guarantor to be an unrestricted subsidiary in accordance with the terms of the indenture.

Debt Covenants

Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate, or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the credit agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the credit agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at September 30, 2015.

The indentures governing our senior subordinated notes contain various restrictive covenants that are substantially identical to each other and may limit our ability to, among other things, pay cash dividends, incur additional indebtedness, sell assets, enter into transactions with affiliates, or change the nature of our business. At September 30, 2015, we were in compliance with these covenants.

Asset Retirement Obligations

9 Months Ended

Sep. 30, 2015

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

(9) ASSET RETIREMENT OBLIGATIONS

Our asset retirement obligations primarily represent the estimated present value of the amounts we will incur to plug, abandon and remediate our producing properties at the end of their productive lives. Significant inputs used in determining such obligations include estimates of plugging and abandonment costs, estimated future inflation rates and well lives. The inputs are calculated based on historical data as well as current estimated costs. In the first nine months 2015, we increased our estimated abandonment costs on certain of our water impoundments and changed estimated well lives for certain wells in Pennsylvania. A reconciliation of our liability for plugging and abandonment costs for the nine months ended September 30, 2015 is as follows (in thousands):

	Nine Months Ended September 30, 2015
Beginning of period	$	287,463
Liabilities incurred		4,135
Liabilities settled		(13,205	)
Disposition of wells		(4,116	)
Accretion expense		14,521
Change in estimate		15,727
End of period		304,525
Less current portion		(17,689	)
Long-term asset retirement obligations	$	286,836

Accretion expense is recognized as a component of depreciation, depletion and amortization expense in the accompanying consolidated statements of operations.

Capital Stock

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Capital Stock

(10) CAPITAL STOCK

We have authorized capital stock of 485.0 million shares which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. We currently have no preferred stock issued or outstanding. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2014:

	Nine Months Ended September 30, 2015		Year Ended December 31, 2014
Beginning balance		168,628,177		163,342,894
Equity offering		—		4,560,000
SARs exercised		77,002		195,242
Restricted stock grants		334,201		270,062
Restricted stock units vested		247,201		244,413
Treasury shares issued		22,939		15,566
Ending balance		169,309,520		168,628,177

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

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Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Activities

9 Months Ended

Sep. 30, 2015

Derivative Activities

(11) DERIVATIVE ACTIVITIES

We use commodity-based derivative contracts to manage exposure to commodity price fluctuations. We do not enter into these arrangements for speculative or trading purposes. We do not utilize complex derivatives, as we typically utilize commodity swaps or collars to (1) reduce the effect of price volatility of the commodities we produce and sell and (2) support our annual capital budget and expenditure plans. The fair value of our derivative contracts, represented by the estimated amount that would be realized upon termination, based on a comparison of the contract price and a reference price, generally the New York Mercantile Exchange (“NYMEX”) for natural gas and crude oil or Mont Belvieu for NGLs, approximated a net asset of $334.8 million at September 30, 2015. These contracts expire monthly through December 2017. In 2013 and 2014, we sold crude oil derivative swap contracts (“sold swaps”) and in third quarter 2015, we entered into purchased crude oil swaps (“re-purchased swaps”) for certain of the sold swaps to lock in derivative gains for fourth quarter 2015. The following table sets forth our commodity-based derivative volumes by year as of September 30, 2015, excluding our basis swaps which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
Natural Gas
2015	Collars	145,000 Mmbtu/day	$ 4.07–$ 4.56
2015	Swaps	727,500 Mmbtu/day	$ 3.63
2016	Swaps	630,000 Mmbtu/day	$ 3.42
2017	Swaps	20,000 Mmbtu/day	$ 3.49

Crude Oil
2015	Sold Swaps	11,250 bbls/day	$ 85.87
2015	Re-Purchased Swaps	2,500 bbls/day	$ 40.19
2016	Swaps	3,999 bbls/day	$ 66.09
2017	Swaps	500 bbls/day	$ 55.00

NGLs (C3-Propane)
2015	Swaps	12,000 bbls/day	$ 0.55/gallon
2016	Swaps	5,500 bbls/day	$ 0.60/gallon

NGLs (NC4-Normal Butane)
2015	Swaps	3,500 bbls/day	$ 0.72/gallon
2016	Swaps	2,500 bbls/day	$ 0.72/gallon

NGLs (C5-Natural Gasoline)
2015	Swaps	4,000 bbls/day	$ 1.16/gallon
2016	Swaps	2,500 bbls/day	$ 1.23/gallon

Every derivative instrument is required to be recorded on the balance sheet as either an asset or a liability measured at its fair value. If the derivative does not qualify as a hedge or is not designated as a hedge, changes in fair value of these non-hedge derivatives are recognized in earnings as derivative fair value income or loss.

Basis Swap Contracts

In addition to the collars and swaps above, at September 30, 2015, we had natural gas basis swap contracts which lock in the differential between NYMEX and certain of our physical pricing indices primarily in Appalachia. These contracts settle monthly through March 2017 and include a total volume of 37,285,000 Mmbtu. The fair value of these contracts was a loss of $2.0 million on September 30, 2015.

Derivative Assets and Liabilities

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of September 30, 2015 and December 31, 2014 is summarized below. The assets and liabilities are netted where derivatives with both gain and loss positions are held by a single counterparty and we have master netting arrangements. The tables below provide additional information relating to our master netting arrangements with our derivative counterparties (in thousands):

		September 30, 2015
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	213,837	$	—		$	213,837
	–collars		19,657		—			19,657
	–basis swaps		1,875		(3,458	)		(1,583	)
Crude oil	–sold swaps		66,494		—			66,494
	–re-purchased swaps		1,287		—			1,287
NGLs	–C3 swaps		13,933		—			13,933
	–NC4 swaps		6,004		—			6,004
	–C5 swaps		13,546		—			13,546
		$	336,633	$	(3,458	)	$	333,175

		September 30, 2015
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–basis swaps	$	(3,862	)	$	3,458	$	(404	)
		$	(3,862	)	$	3,458	$	(404	)

		December 31, 2014
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	198,740	$	—		$	198,740
	–collars		57,460		—			57,460
	–basis swaps		2,442		(755	)		1,687
Crude oil	–swaps		128,578		—			128,578
NGLs	–C3 swaps		14,727		—			14,727
	–C5 swaps		2,171		—			2,171
		$	404,118	$	(755	)	$	403,363

		December 31, 2014
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–basis swaps	$	(755	)	$	755	$	—
		$	(755	)	$	755	$	—

For the three and nine months ended September 30, 2014, the realized gains from our cash flow hedges (for those derivatives that previously qualified for hedge accounting which were reclassified from AOCI into revenue) is summarized below (in thousands):

		Three Months Ended September 30,			Nine Months Ended September 30,
		2014			2014
Swaps	$	1,255		$	3,144
Collars		2,249			7,436
Income taxes		(1,332	)		(4,122	)
	$	2,172		$	6,458

The effects of our non-hedge derivatives (those derivatives that do not qualify for hedge accounting) on our consolidated statements of operations are summarized below (in thousands):


		Three Months Ended September 30,					Nine Months Ended September 30,
		Derivative Fair Value Income (Loss)					Derivative Fair Value Income (Loss)
		2015			2014		2015			2014
Swaps	$	198,245		$	105,767	$	281,921		$	23,173
Re-purchased swaps		1,683			—		1,683			—
Collars		5,626			30,119		12,391			(7,997	)
Basis swaps		(3,550	)		6,171		(5,943	)		(44,078	)
Total	$	202,004		$	142,057	$	290,052		$	(28,902	)

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

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Fair Value Measurements

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

(12) FAIR VALUE MEASUREMENTS

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities: the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as cash flows or earnings, into a single present value amount using current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.

The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and do not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy while Level 3 inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:

—

Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

—

Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date.

—

Level 3 – Unobservable inputs that are not corroborated by market data and may be used with internally developed methodologies that result in management’s best estimate of fair value.

Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the fair value hierarchy.

Fair Values – Recurring

We use a market approach for our recurring fair value measurements and endeavor to use the best information available. The following tables present the fair value hierarchy table for assets and liabilities measured at fair value, on a recurring basis (in thousands):

	Fair Value Measurements at September 30, 2015 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total Carrying Value as of September 30, 2015
Trading securities held in the deferred compensation plans	$	60,273	$	—		$	—	$	60,273
Derivatives –swaps		—		315,101			—		315,101
–collars		—		19,657			—		19,657
–basis swaps		—		(1,987	)		—		(1,987	)

	Fair Value Measurements at December 31, 2014 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Carrying Value as of December 31, 2014
Trading securities held in the deferred compensation plans	$	68,454	$	—	$	—	$	68,454
Derivatives –swaps		—		344,216		—		344,216
–collars		—		57,460		—		57,460
–basis swaps		—		1,687		—		1,687

Our trading securities in Level 1 are exchange-traded and measured at fair value with a market approach using end of period market values. Derivatives in Level 2 are measured at fair value with a market approach using third-party pricing services, which have been corroborated with data from active markets or broker quotes.

Our trading securities held in the deferred compensation plan are accounted for using the mark-to-market accounting method and are included in other assets in the accompanying consolidated balance sheets. We elected to adopt the fair value option to simplify our accounting for the investments in our deferred compensation plan. Interest, dividends, and mark-to-market gains or losses are included in deferred compensation plan expense in the accompanying consolidated statements of operations. For third quarter 2015, interest and dividends were $164,000 and the mark-to-market adjustment was a loss of $4.5 million compared to interest and dividends of $151,000 and a mark-to-market loss of $1.2 million in third quarter 2014. For the nine months ended September 30, 2015, interest and dividends were $412,000 and the mark-to-market adjustment was a loss of $3.7 million compared to interest and dividends of $322,000 and a mark-to-market gain of $1.3 million in the same period of 2014.

Fair Values—Non-recurring

Our proved natural gas and oil properties are reviewed for impairment periodically as events or changes in circumstances indicate the carrying amount may not be recoverable. In the three months ended September 30, 2015, due to declines in commodity prices, there were indicators that the carrying value of certain of our oil and gas properties may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. Their remaining fair value was measured using an income approach based upon internal estimates of future production levels, prices, drilling and operating costs and discount rates, which are Level 3 measurements. We recorded non-cash charges during the three months and the nine months ended September 30, 2015 of $502.2 million related to natural gas and oil properties in Northern Oklahoma and shallow legacy natural gas and oil properties in Northwest Pennsylvania. In the nine months ended September 30, 2014, we recognized an impairment expense of $25.0 million on certain of our oil and gas properties in Mississippi, West Texas and North Texas. Our estimates of future cash flows attributable to our natural gas and oil properties could decline further with commodity prices which may result in additional impairment charges. The following table presents the value of these assets measured at fair value on a non-recurring basis at the time impairment was recorded (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2015				2014				2015				2014
		Fair Value		Impairment		Fair Value VValue Value VValue		Impairment		Fair Value		Impairment		Fair Value		Impairment
Natural gas and oil properties	$	98,872	$	502,233	$	¾	$	¾	$	98,872	$	502,233	$	18,086	$	24,991

Fair Values—Reported

The following table presents the carrying amounts and the fair values of our financial instruments as of September 30, 2015 and December 31, 2014 (in thousands):

	September 30, 2015						December 31, 2014
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, collars and basis swaps	$	333,175		$	333,175		$	403,363		$	403,363
Marketable securities ^(a)		60,273			60,273			68,454			68,454
(Liabilities):
Basis swaps		(404	)		(404	)		—			—
Bank credit facility ^(b)		(987,000	)		(987,000	)		(723,000	)		(723,000	)
Deferred compensation plan ^(c)		(137,637	)		(137,637	)		(203,433	)		(203,433	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(666,563	)		—			—
6.75% senior subordinated notes due 2020 ^(b)		—			—			(500,000	)		(523,125	)
5.75% senior subordinated notes due 2021 ^(b)		(500,000	)		(471,875	)		(500,000	)		(520,000	)
5.00% senior subordinated notes due 2022 ^(b)		(600,000	)		(532,500	)		(600,000	)		(601,500	)
5.00% senior subordinated notes due 2023 ^(b)		(750,000	)		(664,688	)		(750,000	)		(754,688	)

^(a)	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges. Refer to Note 13 for additional information.

^(b)	The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs. Refer to Note 8 for additional information.

^(c)	The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Our current assets and liabilities contain financial instruments, the most significant of which are trade accounts receivable and payable. We believe the carrying values of our current assets and liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments and (2) our historical and expected incurrence of bad debt expense. Non-financial liabilities initially measured at fair value include asset retirement obligations. For additional information, see Note 9.

Concentrations of Credit Risk

As of September 30, 2015, our primary concentrations of credit risk are the risks of not collecting accounts receivable and the risk of counterparty’s failure to perform under derivative obligations. Most of our receivables are from a diverse group of companies, including major energy companies, pipeline companies, local distribution companies, financial institutions and end-users in various industries. Letters of credit or other appropriate security are obtained as deemed necessary to limit our risk of loss. Our allowance for uncollectable receivables was $3.3 million at September 30, 2015 and $2.7 million at December 31, 2014. As of September 30, 2015, our derivative contracts consist of swaps and collars. Our derivative exposure to credit risk is diversified among major investment grade financial institutions, where we have master netting agreements which provide for offsetting payables against receivables from separate derivative contracts. To manage counterparty risk associated with our derivatives, we select and monitor our counterparties based on our assessment of their financial strength and/or credit ratings. We may also limit the level of exposure with any single counterparty. At September 30, 2015, our derivative counterparties include seventeen financial institutions, of which all but two are secured lenders in our bank credit facility. At September 30, 2015, our net derivative assets include a net receivable from these two counterparties that are not included in our bank credit facility of $18.4 million.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Plans

9 Months Ended

Sep. 30, 2015

Stock-Based Compensation Plans

(13) STOCK-BASED COMPENSATION PLANS

Stock-Based Awards

In 2005, we began granting SARs which represent the right to receive a payment equal to the excess of the fair market value of shares of our common stock on the date the right is exercised over the value of the stock on the date of grant. All SARs granted under our Amended and Restated 2005 Equity-Based Incentive Compensation Plan (the “2005 Plan”) will be settled in shares of stock, vest over a three-year period and have a maximum term of five years from the date they are granted. Beginning in first quarter 2011, the Compensation Committee of the Board of Directors began granting restricted stock units under our equity-based stock compensation plans. These restricted stock units, which we refer to as restricted stock Equity Awards, vest over a three-year period. All awards granted have been issued at prevailing market prices at the time of grant and the vesting of these shares is based upon an employee’s continued employment with us.

In first quarter 2014, the Compensation Committee began granting performance share unit (“PSU”) awards under our 2005 Plan. The number of shares to be issued is determined by our total shareholder return compared to the total shareholder return of a predetermined group of peer companies over the performance period. The grant date fair value of the PSU awards is determined using a Monte Carlo simulation and is recognized as stock-based compensation expense over the three-year performance period. The actual payout of shares granted depends on our total shareholder return compared to our peer companies and will be between zero and 150%.

The Compensation Committee also grants restricted stock to certain employees and non-employee directors of the Board of Directors as part of their compensation. Upon grant of these restricted shares, which we refer to as restricted stock Liability Awards, the shares generally are placed in our deferred compensation plan and, upon vesting, employees are allowed to take withdrawals either in cash or in stock. Compensation expense is recognized over the balance of the vesting period, which is typically three years for employee grants and immediate vesting for non-employee directors. All restricted stock awards are issued at prevailing market prices at the time of the grant and vesting is based upon an employee’s continued employment with us. Prior to vesting, all restricted stock awards have the right to vote such shares and receive dividends thereon. These Liability Awards are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market adjustment is reported as deferred compensation plan expense in the accompanying consolidated statements of operations.

Total Stock-Based Compensation Expense

Stock-based compensation represents amortization of restricted stock, PSUs and SARs expense. Unlike the other forms of stock-based compensation, the mark-to-market adjustment of the liability related to the vested restricted stock held in our deferred compensation plan is directly tied to the change in our stock price and not directly related to the functional expenses and therefore, is not allocated to the functional categories. The following table details the allocation of stock-based compensation to functional expense categories (in thousands):

		Three Months Ended September 30,					Nine Months Ended September 30,
		2015			2014		2015		2014
Direct operating expense	$	609		$	720	$	2,149	$	3,509
Brokered natural gas and marketing expense		618			656		1,743		2,314
Exploration expense		688			1,033		2,171		3,408
General and administrative expense		11,512			11,556		38,545		43,856
Termination costs		(1	)		—		1,720		—
Total stock-based compensation	$	13,426		$	13,965	$	46,328	$	53,087

Stock Appreciation Right Awards

We have one active equity-based stock plan, the 2005 Plan. Under this plan, incentive and non-qualified stock options, SARs, and various other awards may be issued to non-employee directors and employees pursuant to decisions of the Compensation Committee, which is comprised of only non-employee, independent directors. There were 1.5 million SARs outstanding at September 30, 2015. Information with respect to SARs activity is summarized below:

	Shares			Weighted Average Exercise Price
Outstanding at December 31, 2014		1,966,549		$	59.80
Exercised		(427,598	)		45.67
Expired/forfeited		(9,469	)		65.04
Outstanding at September 30, 2015		1,529,482		$	63.71

Performance Share Unit Awards

The following is a summary of our non-vested PSU awards outstanding at September 30, 2015:

	Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		134,341		$	86.11
Units granted ^(a)		276,204			56.78
Units vested		(103,397	)		69.67
Units forfeited		(2,679	)		82.60
Outstanding at September 30, 2015		304,469		$	65.12

^(a) Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero percent and 150% of the performance units granted depending on the total shareholder return ranking compared to the peer companies at the end of the three-year performance period.

The following assumptions were used to estimate the fair value of PSUs granted during first nine months 2015 and 2014:

	Nine Months Ended September 30,
	2015			2014
Risk-free interest rate		1.0	%		0.77	%
Expected annual volatility		33	%		33	%
Weighted average grant date fair value per unit	$	56.78		$	86.14

We recorded PSU compensation expense of $2.4 million in three months ended September 30, 2015 compared to $1.4 million in the same period of 2014. We recorded PSU compensation expense of $6.5 million in first nine months 2015 compared to $6.1 million in the same period of 2014.

Restricted Stock Awards

Equity Awards

In first nine months 2015, we granted 586,000 restricted stock Equity Awards to employees at an average grant price of $52.35 compared to 355,000 restricted stock Equity Awards granted to employees at an average grant price of $84.96 in first nine months 2014. These awards generally vest over a three-year period. We recorded compensation expense for these Equity Awards of $5.9 million in the three months ended September 30, 2015 compared to $5.8 million in the same period of 2014. We recorded compensation expense for these Equity Awards of $19.8 million in first nine months 2015 compared to $21.0 million in the same period of 2014. Equity Awards are not issued to employees until they are vested. Employees do not have the option to receive cash.

Liability Awards

In first nine months 2015, we granted 295,000 shares of restricted stock Liability Awards as compensation to employees at an average price of $56.17 with vesting generally over a three-year period and 48,000 shares were granted to non-employee directors at an average price of $55.03 with immediate vesting. In first nine months 2014, we granted 208,000 shares of Liability Awards as compensation to employees at an average price of $87.24 with vesting generally over a three-year period and 64,000 shares were granted to non-employee directors at an average price of $87.97 with immediate vesting. We recorded compensation expense for Liability Awards of $4.4 million in the three months ended September 30, 2015 compared to $5.0 million in the same period of 2014. We recorded compensation expense for Liability Awards of $16.1 million in first nine months 2015 compared to $19.8 million in first nine months 2014. Substantially all of these awards are held in our deferred compensation plan, are classified as a liability and are remeasured at fair value at the end of each reporting period. This mark-to-market adjustment is reported as deferred compensation expense in our consolidated statements of operations (see additional discussion below). The following is a summary of the status of our non-vested restricted stock outstanding at September 30, 2015:

	Equity Awards					Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		360,415		$	79.60		304,504		$	80.33
Granted		586,311			52.35		342,495			56.01
Vested		(338,327	)		66.30		(260,622	)		68.39
Forfeited		(28,994	)		64.88		(8,294	)		74.22
Outstanding at September 30, 2015		579,405		$	60.53		378,083		$	66.67

Deferred Compensation Plan

Our deferred compensation plan gives non-employee directors and officers the ability to defer all or a portion of their salaries and bonuses and invest in Range common stock or make other investments at the individual’s discretion. Range provides a partial matching contribution which vests over three years. The assets of the plan are held in a grantor trust, which we refer to as the Rabbi Trust, and are therefore available to satisfy the claims of our general creditors in the event of bankruptcy or insolvency. Our stock held in the Rabbi Trust is treated as a liability award as employees are allowed to take withdrawals from the Rabbi Trust either in cash or in Range stock. The liability for the vested portion of the stock held in the Rabbi Trust is reflected as deferred compensation liability in the accompanying consolidated balance sheets and is adjusted to fair value each reporting period by a charge or credit to deferred compensation plan expense on our consolidated statements of operations. The assets of the Rabbi Trust, other than our common stock, are invested in marketable securities and reported at their market value as other assets in the accompanying consolidated balance sheets. The deferred compensation liability reflects the vested market value of the marketable securities and Range stock held in the Rabbi Trust. Changes in the market value of the marketable securities and changes in the fair value of the deferred compensation plan liability are charged or credited to deferred compensation plan expense each quarter. Due to declines in the price of Range stock, we recorded a mark-to-market gain of $43.7 million in third quarter 2015 compared to a gain of $46.2 million in third quarter 2014. We recorded a mark-to-market gain of $56.6 million in the nine months ended September 30, 2015 compared to a gain of $37.7 million in the same period of 2014. The Rabbi Trust held 2.8 million shares (2.4 million of which were vested) of Range stock at September 30, 2015 compared to 2.8 million shares (2.5 million of which were vested) at December 31, 2014.

Supplemental Cash Flow Information

9 Months Ended

Sep. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

(14) SUPPLEMENTAL CASH FLOW INFORMATION

	Nine Months Ended September 30,
	2015			2014
	(in thousands)
Net cash provided from operating activities included:
Income taxes paid to taxing authorities	$	100		$	41
Interest paid		128,132			144,596
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		19,862			7,815
(Decrease) increase in accrued capital expenditures		(195,472	)		41,707

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(15) COMMITMENTS AND CONTINGENCIES Litigation We are the subject of, or party to, a number of pending or threatened legal actions, administrative proceedings and claims arising in the ordinary course of our business. While many of these matters involve inherent uncertainty, we believe that the amount of the liability, if any, ultimately incurred with respect to these actions, proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations. We estimate and provide for potential losses that may arise out of litigation and regulatory proceedings to the extent that such losses are probable and can be reasonably estimated. We will continue to evaluate our litigation and regulatory proceedings quarterly and will establish and adjust any estimated liability as appropriate to reflect our assessment of the then current status of litigation and regulatory proceedings. Significant judgment is required in making these estimates and our final liabilities may ultimately be materially different. Transportation and Gathering Contracts In first nine months 2015, our transportation and gathering commitments increased by approximately $476.3 million over the next fourteen years primarily from new firm transportation contracts. Delivery Commitments In first nine months 2015, we entered into new agreements with several pipeline companies and end users to deliver natural gas volumes from our production. The new agreements are to deliver from 1,000 to 40,000 Mmbtu per day of natural gas and the commitments are between two and five years and began as early as second quarter 2015.

Office Closing and Termination Costs

9 Months Ended

Sep. 30, 2015

Restructuring And Related Activities [Abstract]

Office Closing and Termination Costs

(16) OFFICE CLOSING AND TERMINATION COSTS

In first quarter 2015, we announced the closing of our Oklahoma City administrative and operational office to reduce our general and administrative expenses, due in part to the impact of lower commodity prices on our operations. In fourth quarter 2014, we initially accrued an estimated $8.4 million of termination costs relating to the closure of this office as it was probable of occurring. In early 2015, those plans and personnel involved were finalized which resulted in additional accruals in first nine months 2015 for severance and other personnel costs of $275,000, additional accelerated vesting of stock-based compensation of $948,000 and $3.2 million of building lease costs. Also in first nine months 2015, additional accruals for severance of $1.1 million and stock-based compensation of $772,000 were recorded for personnel reductions in Pennsylvania in order to reduce our lease operating expenses due to the lower commodity price environment. The following summarizes our termination costs for the nine months ended September 30, 2015 and the three months ended December 31, 2014 (in thousands):

		Nine Months Ended September 30, 2015		Three Months Ended December 31, 2014
Termination costs	$	1,414	$	5,372
Building lease		3,156		—
Stock-based compensation		1,720		2,999
	$	6,290	$	8,371

The following details our accrued liability as of September 30, 2015 (in thousands):

		Nine Months Ended September 30, 2015
Beginning balance	$	5,372
Additional accrued termination costs		1,414
Accrued building rent		3,270
Payments		(7,793	)
Ending balance	$	2,263

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

9 Months Ended

Sep. 30, 2015

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

(17) Capitalized Costs and Accumulated Depreciation, Depletion and Amortization ^(a)

	September 30, 2015			December 31, 2014
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	9,716,557		$	9,624,725
Unproved properties		940,064			943,246
Total		10,656,621			10,567,971
Accumulated depreciation, depletion and amortization		(2,871,827	)		(2,590,398	)
Net capitalized costs	$	7,784,794		$	7,977,573

^(a)	Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property Acquisition, Exploration and Development

9 Months Ended

Sep. 30, 2015

Costs Incurred for Property Acquisition, Exploration and Development

(18) Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	Nine Months Ended September 30, 2015		Year Ended December 31, 2014
	(in thousands)
Acquisitions	$	—	$	404,252	^(b)
Acreage purchases		45,416		226,475
Development		634,347		1,119,896
Exploration:
Drilling		78,059		180,925
Expense		14,975		58,979
Stock-based compensation expense		2,171		4,569
Gas gathering facilities:
Development		10,914		13,137
Subtotal		785,882		2,008,233
Asset retirement obligations		19,862		56,822
Total costs incurred	$	805,744	$	2,065,055

^(a)	Includes costs incurred whether capitalized or expensed.

^(b)	The year ended December 31, 2014 represents the EQT assets in Virginia we received as part of the Conger Exchange transaction. The transaction was recorded at fair value and we also received $145.0 million in cash, before closing adjustments.

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

Income Tax (Benefit) Expense

Income tax (benefit) expense was as follows (in thousands):

		Three Months Ended September 30,						Nine Months Ended September 30,
		2015			2014			2015			2014
Income tax (benefit) expense	$	(134,781	)	$	93,522		$	(174,390	)	$	230,455
Effective tax rate		30.9	%		39.0	%		30.8	%		39.7	%

(Loss) Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Computations of Basic and Diluted (Loss) Income Per Common Share

		Three Months Ended September 30,						Nine Months Ended September 30,
		2015			2014			2015			2014
Net (loss) income, as reported	$	(300,948	)	$	146,418		$	(391,858	)	$	350,328
Participating earnings ^(a)		(114	)		(2,479	)		(338	)		(5,940	)
Basic net (loss) income attributed to common shareholders		(301,062	)		143,939			(392,196	)		344,388
Reallocation of participating earnings ^(a)		¾			9			¾			28
Diluted net (loss) income attributed to common shareholders	$	(301,062	)	$	143,948		$	(392,196	)	$	344,416
Net (loss) income per common share:
Basic	$	(1.81	)	$	0.87		$	(2.36	)	$	2.11
Diluted	$	(1.81	)	$	0.86		$	(2.36	)	$	2.10

^(a)

Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding

The following table provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2015	2014	2015	2014
Weighted average common shares outstanding – basic	166,517	165,841	166,327	162,866
Effect of dilutive securities:
Director and employee stock options and SARs	¾	619	¾	819
Weighted average common shares outstanding – diluted	166,517	166,460	166,327	163,685

Suspended Exploratory Well Costs (Tables)

9 Months Ended

Sep. 30, 2015

Suspended Exploratory Well Costs

The following table reflects the change in capitalized exploratory well costs for the nine months ended September 30, 2015 and the year ended December 31, 2014 (in thousands):

		September 30, 2015			December 31, 2014
Balance at beginning of period	$	2,996		$	6,964
Additions to capitalized exploratory well costs pending the determination of proved reserves		61,493			18,747
Reclassifications to wells, facilities and equipment based on determination of proved reserves		¾			(15,735	)
Divested wells		¾			(6,980	)
Balance at end of period		64,489			2,996
Less exploratory well costs that have been capitalized for a period of one year or less		(64,489	)		(2,996	)
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	¾		$	¾

Indebtedness (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Debt Outstanding

	September 30, 2015		December 31, 2014
Bank debt (1.8%)	$	987,000	$	723,000
Senior notes:
4.875% senior notes due 2025		750,000		¾
Senior subordinated notes:
6.75% senior subordinated notes due 2020		¾		500,000
5.75% senior subordinated notes due 2021		500,000		500,000
5.00% senior subordinated notes due 2022		600,000		600,000
5.00% senior subordinated notes due 2023		750,000		750,000
Total debt	$	3,587,000	$	3,073,000

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2015

Asset Retirement Obligation

	Nine Months Ended September 30, 2015
Beginning of period	$	287,463
Liabilities incurred		4,135
Liabilities settled		(13,205	)
Disposition of wells		(4,116	)
Accretion expense		14,521
Change in estimate		15,727
End of period		304,525
Less current portion		(17,689	)
Long-term asset retirement obligations	$	286,836

Capital Stock (Tables)

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Capital Stock

The following is a schedule of changes in the number of common shares outstanding since the beginning of 2014:

	Nine Months Ended September 30, 2015		Year Ended December 31, 2014
Beginning balance		168,628,177		163,342,894
Equity offering		—		4,560,000
SARs exercised		77,002		195,242
Restricted stock grants		334,201		270,062
Restricted stock units vested		247,201		244,413
Treasury shares issued		22,939		15,566
Ending balance		169,309,520		168,628,177

Derivative Activities (Tables)

9 Months Ended

Sep. 30, 2015

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Volumes Hedged and Average Hedge Prices

The following table sets forth our commodity-based derivative volumes by year as of September 30, 2015, excluding our basis swaps which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
Natural Gas
2015	Collars	145,000 Mmbtu/day	$ 4.07–$ 4.56
2015	Swaps	727,500 Mmbtu/day	$ 3.63
2016	Swaps	630,000 Mmbtu/day	$ 3.42
2017	Swaps	20,000 Mmbtu/day	$ 3.49

Crude Oil
2015	Sold Swaps	11,250 bbls/day	$ 85.87
2015	Re-Purchased Swaps	2,500 bbls/day	$ 40.19
2016	Swaps	3,999 bbls/day	$ 66.09
2017	Swaps	500 bbls/day	$ 55.00

NGLs (C3-Propane)
2015	Swaps	12,000 bbls/day	$ 0.55/gallon
2016	Swaps	5,500 bbls/day	$ 0.60/gallon

NGLs (NC4-Normal Butane)
2015	Swaps	3,500 bbls/day	$ 0.72/gallon
2016	Swaps	2,500 bbls/day	$ 0.72/gallon

NGLs (C5-Natural Gasoline)
2015	Swaps	4,000 bbls/day	$ 1.16/gallon
2016	Swaps	2,500 bbls/day	$ 1.23/gallon

Combined Fair Value of Derivatives, by Consolidated Balance Sheets

		September 30, 2015
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	213,837	$	—		$	213,837
	–collars		19,657		—			19,657
	–basis swaps		1,875		(3,458	)		(1,583	)
Crude oil	–sold swaps		66,494		—			66,494
	–re-purchased swaps		1,287		—			1,287
NGLs	–C3 swaps		13,933		—			13,933
	–NC4 swaps		6,004		—			6,004
	–C5 swaps		13,546		—			13,546
		$	336,633	$	(3,458	)	$	333,175

		September 30, 2015
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–basis swaps	$	(3,862	)	$	3,458	$	(404	)
		$	(3,862	)	$	3,458	$	(404	)

		December 31, 2014
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	198,740	$	—		$	198,740
	–collars		57,460		—			57,460
	–basis swaps		2,442		(755	)		1,687
Crude oil	–swaps		128,578		—			128,578
NGLs	–C3 swaps		14,727		—			14,727
	–C5 swaps		2,171		—			2,171
		$	404,118	$	(755	)	$	403,363

		December 31, 2014
		Gross Amounts of Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–basis swaps	$	(755	)	$	755	$	—
		$	(755	)	$	755	$	—

Schedule of Realized Gains from Cash Flow Hedges and Other Hedges Reclassified from Accumulated Other Comprehensive Income

		Three Months Ended September 30,			Nine Months Ended September 30,
		2014			2014
Swaps	$	1,255		$	3,144
Collars		2,249			7,436
Income taxes		(1,332	)		(4,122	)
	$	2,172		$	6,458

Effects of Non-Hedge Derivatives on Consolidated Statements of Operations

The effects of our non-hedge derivatives (those derivatives that do not qualify for hedge accounting) on our consolidated statements of operations are summarized below (in thousands):


		Three Months Ended September 30,					Nine Months Ended September 30,
		Derivative Fair Value Income (Loss)					Derivative Fair Value Income (Loss)
		2015			2014		2015			2014
Swaps	$	198,245		$	105,767	$	281,921		$	23,173
Re-purchased swaps		1,683			—		1,683			—
Collars		5,626			30,119		12,391			(7,997	)
Basis swaps		(3,550	)		6,171		(5,943	)		(44,078	)
Total	$	202,004		$	142,057	$	290,052		$	(28,902	)

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41638-113959

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579240-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41620-113959

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

Fair Value Disclosures [Abstract]

	Fair Value Measurements at September 30, 2015 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total Carrying Value as of September 30, 2015
Trading securities held in the deferred compensation plans	$	60,273	$	—		$	—	$	60,273
Derivatives –swaps		—		315,101			—		315,101
–collars		—		19,657			—		19,657
–basis swaps		—		(1,987	)		—		(1,987	)

	Fair Value Measurements at December 31, 2014 using:
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Carrying Value as of December 31, 2014
Trading securities held in the deferred compensation plans	$	68,454	$	—	$	—	$	68,454
Derivatives –swaps		—		344,216		—		344,216
–collars		—		57,460		—		57,460
–basis swaps		—		1,687		—		1,687

Value of Assets Measured at Fair Value on Non Recurring Basis

The following table presents the value of these assets measured at fair value on a non-recurring basis at the time impairment was recorded (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2015				2014				2015				2014
		Fair Value		Impairment		Fair Value VValue Value VValue		Impairment		Fair Value		Impairment		Fair Value		Impairment
Natural gas and oil properties	$	98,872	$	502,233	$	¾	$	¾	$	98,872	$	502,233	$	18,086	$	24,991

Carrying Amounts and Fair Values of Financial Instruments

The following table presents the carrying amounts and the fair values of our financial instruments as of September 30, 2015 and December 31, 2014 (in thousands):

	September 30, 2015						December 31, 2014
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, collars and basis swaps	$	333,175		$	333,175		$	403,363		$	403,363
Marketable securities ^(a)		60,273			60,273			68,454			68,454
(Liabilities):
Basis swaps		(404	)		(404	)		—			—
Bank credit facility ^(b)		(987,000	)		(987,000	)		(723,000	)		(723,000	)
Deferred compensation plan ^(c)		(137,637	)		(137,637	)		(203,433	)		(203,433	)
4.875% senior notes due 2025 ^(b)		(750,000	)		(666,563	)		—			—
6.75% senior subordinated notes due 2020 ^(b)		—			—			(500,000	)		(523,125	)
5.75% senior subordinated notes due 2021 ^(b)		(500,000	)		(471,875	)		(500,000	)		(520,000	)
5.00% senior subordinated notes due 2022 ^(b)		(600,000	)		(532,500	)		(600,000	)		(601,500	)
5.00% senior subordinated notes due 2023 ^(b)		(750,000	)		(664,688	)		(750,000	)		(754,688	)

^(a)	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges. Refer to Note 13 for additional information.

^(b)	The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs. Refer to Note 8 for additional information.

^(c)	The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Stock-Based Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2015

Allocation of Stock-Based Compensation by Functional Category

The following table details the allocation of stock-based compensation to functional expense categories (in thousands):

		Three Months Ended September 30,					Nine Months Ended September 30,
		2015			2014		2015		2014
Direct operating expense	$	609		$	720	$	2,149	$	3,509
Brokered natural gas and marketing expense		618			656		1,743		2,314
Exploration expense		688			1,033		2,171		3,408
General and administrative expense		11,512			11,556		38,545		43,856
Termination costs		(1	)		—		1,720		—
Total stock-based compensation	$	13,426		$	13,965	$	46,328	$	53,087

Stock Option and SARs Activities

Information with respect to SARs activity is summarized below:

	Shares			Weighted Average Exercise Price
Outstanding at December 31, 2014		1,966,549		$	59.80
Exercised		(427,598	)		45.67
Expired/forfeited		(9,469	)		65.04
Outstanding at September 30, 2015		1,529,482		$	63.71

Summary of Performance Share Unit Awards Activity

The following is a summary of our non-vested PSU awards outstanding at September 30, 2015:

	Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		134,341		$	86.11
Units granted ^(a)		276,204			56.78
Units vested		(103,397	)		69.67
Units forfeited		(2,679	)		82.60
Outstanding at September 30, 2015		304,469		$	65.12

Restricted Stock and Restricted Stock Units Outstanding

The following is a summary of the status of our non-vested restricted stock outstanding at September 30, 2015:

	Equity Awards					Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2014		360,415		$	79.60		304,504		$	80.33
Granted		586,311			52.35		342,495			56.01
Vested		(338,327	)		66.30		(260,622	)		68.39
Forfeited		(28,994	)		64.88		(8,294	)		74.22
Outstanding at September 30, 2015		579,405		$	60.53		378,083		$	66.67

Performance Shares

Schedule of Share Based Payment Award Performance Stock Awards Valuation Assumptions

The following assumptions were used to estimate the fair value of PSUs granted during first nine months 2015 and 2014:

	Nine Months Ended September 30,
	2015			2014
Risk-free interest rate		1.0	%		0.77	%
Expected annual volatility		33	%		33	%
Weighted average grant date fair value per unit	$	56.78		$	86.14

Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Nine Months Ended September 30,
	2015			2014
	(in thousands)
Net cash provided from operating activities included:
Income taxes paid to taxing authorities	$	100		$	41
Interest paid		128,132			144,596
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized		19,862			7,815
(Decrease) increase in accrued capital expenditures		(195,472	)		41,707

Office Closing and Termination Costs (Tables)

9 Months Ended

Sep. 30, 2015

Restructuring And Related Activities [Abstract]

Summary of Termination Costs

The following summarizes our termination costs for the nine months ended September 30, 2015 and the three months ended December 31, 2014 (in thousands):

		Nine Months Ended September 30, 2015		Three Months Ended December 31, 2014
Termination costs	$	1,414	$	5,372
Building lease		3,156		—
Stock-based compensation		1,720		2,999
	$	6,290	$	8,371

Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet

The following details our accrued liability as of September 30, 2015 (in thousands):

		Nine Months Ended September 30, 2015
Beginning balance	$	5,372
Additional accrued termination costs		1,414
Accrued building rent		3,270
Payments		(7,793	)
Ending balance	$	2,263

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Tables)

9 Months Ended

Sep. 30, 2015

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

	September 30, 2015			December 31, 2014
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	9,716,557		$	9,624,725
Unproved properties		940,064			943,246
Total		10,656,621			10,567,971
Accumulated depreciation, depletion and amortization		(2,871,827	)		(2,590,398	)
Net capitalized costs	$	7,784,794		$	7,977,573

^(a)	Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property Acquisition, Exploration and Development (Tables)

9 Months Ended

Sep. 30, 2015

Costs Incurred for Property Acquisition, Exploration and Development

	Nine Months Ended September 30, 2015		Year Ended December 31, 2014
	(in thousands)
Acquisitions	$	—	$	404,252	^(b)
Acreage purchases		45,416		226,475
Development		634,347		1,119,896
Exploration:
Drilling		78,059		180,925
Expense		14,975		58,979
Stock-based compensation expense		2,171		4,569
Gas gathering facilities:
Development		10,914		13,137
Subtotal		785,882		2,008,233
Asset retirement obligations		19,862		56,822
Total costs incurred	$	805,744	$	2,065,055

^(a)	Includes costs incurred whether capitalized or expensed.

^(b)	The year ended December 31, 2014 represents the EQT assets in Virginia we received as part of the Conger Exchange transaction. The transaction was recorded at fair value and we also received $145.0 million in cash, before closing adjustments.

Acquisitions and Dispositions - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2014	Jun. 30, 2015	Jun. 16, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets		$ (681)		$ 167			$ 2,053	$ 281,878
Conger Exchange Transaction
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets								285,200
Cash proceeds from sale of assets	$ 145,000								$ 145,000
Net operating income prior to disposition			$ 14,600			$ 21,900
Sale and exchange transaction, closing date							Jun. 16, 2014
Selling expenses for property sale								5,000
Recognized revenue from sale of property interests acquire			$ 18,400
Miscellaneous Proved, Unproved Properties and Surface Acreage
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas		524			$ 14,300			2,100
(Loss) gain on the sale of assets		$ (681)			2,700			$ 1,700
West Texas Properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas					$ 10,500

Income Taxes - Income Tax (Benefit) Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax (benefit) expense	$ (134,781)	$ 93,522	$ (174,390)	$ 230,455
Effective tax rate	30.90%	39.00%	30.80%	39.70%

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Taxes [Line Items]
Federal statutory rate	35.00%	35.00%	35.00%	35.00%
Income tax expense (benefit)	$ (134,781)	$ 93,522	$ (174,390)	$ 230,455
Deferred compensation plan
Income Taxes [Line Items]
Income tax expense (benefit)	(2,600)		(3,500)
Valuation Allowance, Operating Loss Carryforwards \| Federal
Income Taxes [Line Items]
Income tax expense (benefit)	28,500		28,500
Valuation Allowance, Operating Loss Carryforwards \| State
Income Taxes [Line Items]
Income tax expense (benefit)	$ 8,500		$ 19,800

(Loss) Income Per Common Share - Computations of Basic and Diluted (Loss) Income Per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Sep. 30, 2015

Sep. 30, 2014

Earnings Per Share Reconciliation [Abstract]

Net (loss) income, as reported

$ (300,948)

$ 146,418

$ (391,858)

$ 350,328

Participating earnings

^[1]

(114)

(2,479)

(338)

(5,940)

Basic net (loss) income attributed to common shareholders

(301,062)

143,939

(392,196)

344,388

Reallocation of participating earnings

^[1]

Diluted net (loss) income attributed to common shareholders

$ (301,062)

$ 143,948

$ (392,196)

$ 344,416

Net (loss) income per common share:

Basic

$ (1.81)

$ 0.87

$ (2.36)

$ 2.11

Diluted

$ (1.81)

$ 0.86

$ (2.36)

$ 2.10

[1]

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Derivative Instruments Gain Loss [Line Items]

(Loss) Income Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Weighted average common shares outstanding – basic	166,517	165,841	166,327	162,866
Effect of dilutive securities:
Director and employee stock options and SARs	0	619	0	819
Weighted average common shares outstanding – diluted	166,517	166,460	166,327	163,685

(Loss) Income Per Common Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	2,800,000		2,800,000
Stock held in deferred compensation plan		2,900,000		2,800,000
Stock Appreciation Rights (SARs)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation		351,000

Suspended Exploratory Well Costs - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Extractive Industries [Abstract]
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$ 0	$ 0

Suspended Exploratory Well Costs - Suspended Exploratory Well Costs (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Extractive Industries [Abstract]
Balance at beginning of period	$ 2,996	$ 6,964
Additions to capitalized exploratory well costs pending the determination of proved reserves	61,493	18,747
Reclassifications to wells, facilities and equipment based on determination of proved reserves	0	(15,735)
Divested wells	0	(6,980)
Balance at end of period	64,489	2,996
Less exploratory well costs that have been capitalized for a period of one year or less	(64,489)	(2,996)
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$ 0	$ 0

Indebtedness - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Disclosure [Abstract]
Interest capitalized during the period	$ 0	$ 0	$ 0	$ 0

Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	May 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Bank debt	$ 987,000		$ 723,000
Senior notes	750,000		0
Senior subordinated notes	1,850,000		2,350,000
Total debt	3,587,000		3,073,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Senior notes	750,000	$ 750,000	0
Notes Payable to Banks \| 1.8% Bank Debt
Debt Instrument [Line Items]
Bank debt	987,000		723,000
Senior Subordinated Notes \| 6.75% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Senior subordinated notes	0		500,000
Senior Subordinated Notes \| 5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Senior subordinated notes	500,000		500,000
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Senior subordinated notes	600,000		600,000
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Senior subordinated notes	$ 750,000		$ 750,000

Indebtedness - Debt Outstanding (Parenthetical) (Detail)	Sep. 30, 2015	May 31, 2015	Dec. 31, 2014
Notes Payable to Banks \| 1.8% Bank Debt
Debt Instrument [Line Items]
Bank debt percentage	1.80%		1.80%
Senior Notes \| 4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate on notes	4.875%	4.875%	4.875%
Senior Subordinated Notes \| 6.75% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Interest rate on notes	6.75%	6.75%	6.75%
Senior Subordinated Notes \| 5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%		5.75%
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%

Indebtedness - Bank Debt - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) CommercialBank	Sep. 30, 2014	Sep. 30, 2015 USD ($) CommercialBank	Sep. 30, 2014	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Bank debt	$ 987,000,000		$ 987,000,000		$ 723,000,000
Bank Credit Facility
Debt Instrument [Line Items]
Bank Credit facility, maximum amount	4,000,000,000		4,000,000,000
Bank credit facility, current borrowing base	3,000,000,000		3,000,000,000
Bank commitments	$ 2,000,000,000		$ 2,000,000,000
Percentage holding of commercial banks, Maximum	6.00%		6.00%
Number of commercial banks included in current bank group \| CommercialBank	29		29
Maturity date of loan			Oct. 16, 2019
Bank debt	$ 987,000,000		$ 987,000,000
Undrawn letters of credit	136,800,000		136,800,000
Committed borrowing capacity available under the facility amount	$ 876,200,000		$ 876,200,000
Weighted average interest rate on the bank credit facility	1.70%	2.10%	1.70%	2.10%
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility \| Alternate Base Rate
Debt Instrument [Line Items]
Minimum range of base rate			0.25%
Maximum range of base rate			1.25%
Interest rate margin			0.50%
Bank Credit Facility \| Alternate Base Rate \| Credit Facility
Debt Instrument [Line Items]
Minimum range of base rate			0.125%
Maximum range of base rate			0.75%
Bank Credit Facility \| LIBOR Rate
Debt Instrument [Line Items]
Minimum range of base rate			1.25%
Maximum range of base rate			2.25%
Interest rate margin			1.50%
Bank Credit Facility \| LIBOR Rate \| Credit Facility
Debt Instrument [Line Items]
Minimum range of base rate			1.125%
Maximum range of base rate			1.75%
Bank Credit Facility \| Minimum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility \| Minimum \| Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.15%
Bank Credit Facility \| Maximum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.375%
Bank Credit Facility \| Maximum \| Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%

Indebtedness - Senior Notes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Aggregate principal amount		$ 750,000	$ 0
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Aggregate principal amount	$ 750,000	$ 750,000	$ 0
4.875% Senior Notes Due 2025 \| Senior Notes
Debt Instrument [Line Items]
Interest rate on notes	4.875%	4.875%	4.875%
Net proceeds after underwriting discounts and commissions	$ 737,400
Underwriting discounts and commissions	$ 12,600
Debt instrument redemption, percentage of principal amount	100.00%
6.75% Senior Subordinated Notes Due 2020 \| Senior Subordinated Notes
Debt Instrument [Line Items]
Interest rate on notes	6.75%	6.75%	6.75%

Indebtedness - Senior Subordinated Notes and Early Extinguishment of Debt - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended			9 Months Ended
	Jul. 01, 2015	May 27, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	May 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Loss on early extinguishment of debt			$ 22,495	$ 0		$ 22,495	$ 24,596
Subordinated Debt
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount						101.00%
Subordinated Debt \| 8.0% Senior Subordinated notes due 2019
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount		104.00%
Announced call for redemption amount of debt		$ 300,000
Loss on early extinguishment of debt					$ 24,600
Debt instrument, redemption description						On May 27, 2014, we announced a call for the redemption of $300.0 million of our outstanding 8.0% senior subordinated notes due 2019 at 104.0% of par plus accrued and unpaid interest, which were redeemed on June 26, 2014.
Interest rate on notes		8.00%
Senior Subordinated Notes \| 6.75% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount	103.375%
Announced call for redemption amount of debt	$ 500,000
Loss on early extinguishment of debt			$ 22,500
Debt instrument, redemption description						On July 1, 2015, we announced a call for the redemption of $500.0 million of our outstanding 6.75% senior subordinated notes due 2020 at a price of 103.375% of par plus accrued and unpaid interest, which were redeemed on August 3, 2015. In third quarter 2015, we recognized a loss on early extinguishment of debt of $22.5 million, including transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt
Interest rate on notes			6.75%			6.75%		6.75%	6.75%

Indebtedness - Guarantees and Debt Covenants - Additional Information (Detail) - Bank Credit Facility	9 Months Ended
	Sep. 30, 2015
Debt Instrument [Line Items]
Debt instrument, Covenant compliance	Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate, or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the credit agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the credit agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at September 30, 2015. The indentures governing our senior subordinated notes contain various restrictive covenants that are substantially identical to each other and may limit our ability to, among other things, pay cash dividends, incur additional indebtedness, sell assets, enter into transactions with affiliates, or change the nature of our business. At September 30, 2015, we were in compliance with these covenants.
Maximum
Debt Instrument [Line Items]
Ratio of debt to EBITDAX	250.00%
Present Value Of Proved Reserves To Total Debt.	150.00%
Minimum
Debt Instrument [Line Items]
Current ratio	100.00%

Asset Retirement Obligations - Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Asset Retirement Obligation [Abstract]
Beginning of period	$ 287,463
Liabilities incurred	4,135
Liabilities settled	(13,205)
Disposition of wells	(4,116)
Accretion expense	14,521
Change in estimate	15,727
End of period	304,525
Less current portion	(17,689)	$ (15,067)
Long-term asset retirement obligations	$ 286,836

Capital Stock - Additional Information (Detail) - shares	Sep. 30, 2015	Dec. 31, 2014
Class Of Stock Disclosures [Abstract]
Authorized capital stock	485,000,000	485,000,000
Common stock, shares authorized	475,000,000	475,000,000
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Capital Stock (Detail) - shares	9 Months Ended	12 Months Ended
Capital Stock (Detail) - shares	Sep. 30, 2015	Dec. 31, 2014
Class Of Stock [Line Items]
Beginning balance	168,628,177	163,342,894
Restricted stock grants	334,201	270,062
Restricted stock units vested	247,201	244,413
Treasury shares issued	22,939	15,566
Ending balance	169,309,520	168,628,177
Common Stock \| Equity Offering
Class Of Stock [Line Items]
Equity offering	0	4,560,000
Stock Appreciation Rights (SARs)
Class Of Stock [Line Items]
SARs exercised	77,002	195,242

Derivative Activities - Additional Information (Detail) $ in Millions	Sep. 30, 2015 USD ($) MMBTU / d
Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (2.0)
Volume Hedged \| MMBTU / d	37,285,000
Derivatives Excluding Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 334.8

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)	Sep. 30, 2015 MMBTU / d bbl / d $ / MMBTU $ / bbl $ / gal
Natural Gas \| Collars \| 2015
Derivative [Line Items]
Volume Hedged \| MMBTU / d	145,000
Average floor price \| $ / MMBTU	4.07
Average cap price \| $ / MMBTU	4.56
Natural Gas \| Swaps \| 2015
Derivative [Line Items]
Volume Hedged \| MMBTU / d	727,500
Average hedge price \| $ / MMBTU	3.63
Natural Gas \| Swaps \| 2016
Derivative [Line Items]
Volume Hedged \| MMBTU / d	630,000
Average hedge price \| $ / MMBTU	3.42
Natural Gas \| Swaps \| 2017
Derivative [Line Items]
Volume Hedged \| MMBTU / d	20,000
Average hedge price \| $ / MMBTU	3.49
Crude Oil \| Swaps \| 2016
Derivative [Line Items]
Volume Hedged	3,999
Average hedge price \| $ / bbl	66.09
Crude Oil \| Swaps \| 2017
Derivative [Line Items]
Volume Hedged	500
Average hedge price \| $ / bbl	55.00
Crude Oil \| Sold Swaps \| 2015
Derivative [Line Items]
Volume Hedged	11,250
Average hedge price \| $ / bbl	85.87
Crude Oil \| Re-purchased Swaps \| 2015
Derivative [Line Items]
Volume Hedged	2,500
Average hedge price \| $ / bbl	40.19
Commodity Contract NGLs (C3 - Propane) \| Swaps \| 2015
Derivative [Line Items]
Volume Hedged	12,000
Average hedge price \| $ / gal	0.55
Commodity Contract NGLs (C3 - Propane) \| Swaps \| 2016
Derivative [Line Items]
Volume Hedged	5,500
Average hedge price \| $ / gal	0.60
Commodity Contract NGLs (NC4 - Normal Butane) \| Swaps \| 2015
Derivative [Line Items]
Volume Hedged	3,500
Average hedge price \| $ / gal	0.72
Commodity Contract NGLs (NC4 - Normal Butane) \| Swaps \| 2016
Derivative [Line Items]
Volume Hedged	2,500
Average hedge price \| $ / gal	0.72
Commodity Contract NGLs (C5 - Natural Gasoline) \| Swaps \| 2015
Derivative [Line Items]
Volume Hedged	4,000
Average hedge price \| $ / gal	1.16
Commodity Contract NGLs (C5 - Natural Gasoline) \| Swaps \| 2016
Derivative [Line Items]
Volume Hedged	2,500
Average hedge price \| $ / gal	1.23

Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 336,633	$ 404,118
Gross Amounts Offset in the Balance Sheet	(3,458)	(755)
Net Amounts of Assets Presented in the Balance Sheet	333,175	403,363
Gross Amounts of Recognized (Liabilities)	(3,862)	(755)
Gross Amounts Offset in the Balance Sheet	3,458	755
Net Amounts of (Liabilities) Presented in the Balance Sheet	(404)	0
Natural Gas \| Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	213,837	198,740
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	213,837	198,740
Natural Gas \| Collars
Derivative [Line Items]
Gross Amounts of Recognized Assets	19,657	57,460
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	19,657	57,460
Natural Gas \| Basis Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,875	2,442
Gross Amounts Offset in the Balance Sheet	(3,458)	(755)
Net Amounts of Assets Presented in the Balance Sheet	(1,583)	1,687
Gross Amounts of Recognized (Liabilities)	(3,862)	(755)
Gross Amounts Offset in the Balance Sheet	3,458	755
Net Amounts of (Liabilities) Presented in the Balance Sheet	(404)	0
Crude Oil \| Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets		128,578
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Assets Presented in the Balance Sheet		128,578
Crude Oil \| Sold Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	66,494
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	66,494
Crude Oil \| Re-purchased Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,287
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	1,287
Commodity Contract NGLs (C3 - Propane) \| Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	13,933	14,727
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	13,933	14,727
Commodity Contract NGLs (NC4 - Normal Butane) \| Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	6,004
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	6,004
Commodity Contract NGLs (C5 - Natural Gasoline) \| Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	13,546	2,171
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	$ 13,546	$ 2,171

Derivative Activities - Schedule of Realized Gains from Cash Flow Hedges and Other Hedges Reclassified from Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Sep. 30, 2015

Sep. 30, 2014

Realized Gain (Loss) Reclassified from OCI into Revenue, Tax Effects

$ (1,332)

$ (4,122)

Realized Gain (Loss) Reclassified from OCI into Revenue, Net of Taxes

^[1]

$ 0

2,172

$ 0

6,458

Swaps

Derivative Instruments Gain Loss [Line Items]

Realized Gain (Loss) Reclassified from OCI into Revenue, Before Taxes

1,255

3,144

Collars

Derivative Instruments Gain Loss [Line Items]

Realized Gain (Loss) Reclassified from OCI into Revenue, Before Taxes

$ 2,249

$ 7,436

[1]

Derivative Activities - Effects of Non-Hedge Derivatives on Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Financial Instruments [Line Items]
Derivative Fair Value Income (Loss)	$ 202,004	$ 142,057	$ 290,052	$ (28,902)
Swaps
Derivative Financial Instruments [Line Items]
Derivative Fair Value Income (Loss)	198,245	105,767	281,921	23,173
Re-purchased Swaps
Derivative Financial Instruments [Line Items]
Derivative Fair Value Income (Loss)	1,683	0	1,683	0
Collars
Derivative Financial Instruments [Line Items]
Derivative Fair Value Income (Loss)	5,626	30,119	12,391	(7,997)
Basis Swaps
Derivative Financial Instruments [Line Items]
Derivative Fair Value Income (Loss)	$ (3,550)	$ 6,171	$ (5,943)	$ (44,078)

Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	$ 60,273	$ 68,454
Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	315,101	344,216
Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	19,657	57,460
Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(1,987)	1,687
Fair Value, Inputs, Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	60,273	68,454
Fair Value, Inputs, Level 1 \| Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 \| Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 \| Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	0	0
Fair Value, Inputs, Level 2 \| Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	315,101	344,216
Fair Value, Inputs, Level 2 \| Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	19,657	57,460
Fair Value, Inputs, Level 2 \| Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(1,987)	1,687
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	0	0
Fair Value, Inputs, Level 3 \| Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 3 \| Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 3 \| Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ 0	$ 0

Fair Value Measurements - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Company Lenders	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends	$ 164	$ 151	$ 412	$ 322
Mark-to-market gain (loss)	(4,500)	(1,200)	(3,700)	1,300
Impairment of proved properties and other assets	502,233	$ 0	502,233	24,991
Allowance for doubtful accounts on accounts receivable	3,306		$ 3,306		$ 2,719
Number of financial institutions included in counter parties \| Company			17
Number of secured lenders not in banking credit facility \| Lenders			2
Net derivative assets	18,400		$ 18,400
Fair Value, Measurements, Nonrecurring \| Natural Gas and Oil Properties
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets	$ 502,233		$ 502,233	$ 24,991

Fair Value Measurements - Value of Assets Measured at Fair Value on Non Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets	$ 502,233	$ 0	$ 502,233	$ 24,991
Fair Value, Measurements, Nonrecurring \| Natural Gas and Oil Properties
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value	98,872	$ 0	98,872	18,086
Impairment of proved properties and other assets	$ 502,233		$ 502,233	$ 24,991

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands

Sep. 30, 2015

May 31, 2015

Dec. 31, 2014

4.875% Senior Notes Due 2025

$ (750,000)

$ 0

Commodity swaps, collars and basis swaps

(750,000)

$ (750,000)

Carrying Value

Assets:

333,175

403,363

Marketable securities

^[1]

60,273

68,454

Deferred compensation plan

Basis swaps

(404)

Bank credit facility

^[2]

(987,000)

(723,000)

^[3]

(137,637)

(203,433)

Carrying Value | 4.875% Senior Notes Due 2025

Carrying Value | 6.75% Senior Subordinated Notes Due 2020

^[2]

(750,000)

Carrying Value | 5.75% Senior Subordinated Notes Due 2021

^[2]

(500,000)

Carrying Value | 5.00% Senior Subordinated Notes Due 2022

^[2]

(500,000)

Carrying Value | 5.00% Senior Subordinated Notes Due 2023

^[2]

(600,000)

Commodity swaps, collars and basis swaps

^[2]

(750,000)

Fair Value

Assets:

333,175

403,363

Marketable securities

^[1]

60,273

68,454

Deferred compensation plan

Basis swaps

(404)

Bank credit facility

^[2]

(987,000)

(723,000)

^[3]

(137,637)

(203,433)

Fair Value | 4.875% Senior Notes Due 2025

Fair Value | 6.75% Senior Subordinated Notes Due 2020

^[2]

(666,563)

Fair Value | 5.75% Senior Subordinated Notes Due 2021

^[2]

(523,125)

Fair Value | 5.00% Senior Subordinated Notes Due 2022

^[2]

(471,875)

(520,000)

Fair Value | 5.00% Senior Subordinated Notes Due 2023

^[2]

(532,500)

(601,500)

Summary of Performance Share Unit Awards outstanding, Number of Units

^[2]

$ (664,688)

$ (754,688)

[1]	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges. Refer to Note 13 for additional information.
[2]	The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs. Refer to Note 8 for additional information.
[3]	The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail)	Sep. 30, 2015	May 31, 2015	Dec. 31, 2014
Senior Notes \| 4.875% Senior Notes Due 2025
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	4.875%	4.875%	4.875%
Senior Subordinated Notes \| 6.75% Senior Subordinated Notes Due 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	6.75%	6.75%	6.75%
Senior Subordinated Notes \| 5.75% Senior Subordinated Notes Due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.75%		5.75%
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%		5.00%
Senior Subordinated Notes \| 5.00% Senior Subordinated Notes Due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%		5.00%

Stock-Based Compensation Plans - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Sep. 30, 2015
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Actual payout of shares on performance units granted		150.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Actual payout of shares on performance units granted		0.00%
Stock Appreciation Rights (SARs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Stock Appreciation Rights (SARs) \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration term of stock units		5 years
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years	3 years
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years

Stock-Based Compensation Plans - Allocation of Stock-Based Compensation by Functional Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 13,426	$ 13,965	$ 46,328	$ 53,087
Direct Operating Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	609	720	2,149	3,509
Brokered Natural Gas and Marketing Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	618	656	1,743	2,314
Exploration Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	688	1,033	2,171	3,408
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	11,512	11,556	38,545	43,856
Termination Costs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ (1)	$ 0	$ 1,720	$ 0

Stock-Based Compensation Plans - Additional Information 1 (Detail)	9 Months Ended
	Sep. 30, 2015 Plans shares	Dec. 31, 2014 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Active equity-based stock plans \| Plans	1
Stock Appreciation Rights (SARs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock option outstanding \| shares	1,529,482	1,966,549

Stock-Based Compensation Plans - Stock Option and SARs Activities (Detail) - Stock Appreciation Rights (SARs)	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance, Shares \| shares	1,966,549
Exercised, Shares \| shares	(427,598)
Expired/forfeited, Shares \| shares	(9,469)
Ending Balance, Shares \| shares	1,529,482
Beginning Balance, Weighted Average Exercise Price \| $ / shares	$ 59.80
Exercised, Weighted Average Exercise Price \| $ / shares	45.67
Expired/forfeited, Weighted Average Exercise Price \| $ / shares	65.04
Ending Balance, Weighted Average Exercise Price \| $ / shares	$ 63.71

Stock-Based Compensation Plans - PSUA Activity (Detail) - Performance Shares - $ / shares

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Outstanding, Beginning Balance

134,341

Outstanding, Ending Balance

^[1]

276,204

Units vested

(103,397)

Units forfeited

(2,679)

304,469

Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value

Outstanding, Beginning Balance, weighted average grant date fair value

$ 86.11

Granted, weighted average grant date fair value

56.78

^[1]

$ 86.14

Vested, weighted average grant date fair value

69.67

Forfeited, weighted average grant date fair value

82.60

Outstanding, Ending Balance, weighted average grant date fair value

$ 65.12

[1]

Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero percent and 150% of the performance units granted depending on the total shareholder return ranking compared to the peer companies at the end of the three-year performance period.

Stock-Based Compensation Plans - PSUA Activity (Parenthetical) (Detail)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Sep. 30, 2015
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years	3 years
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Actual payout of shares on performance units granted		0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Actual payout of shares on performance units granted		150.00%

Stock-Based Compensation Plans - Valuation Assumptions for Grant Date Fair Value of Performance Awards (Detail) - Performance Shares - $ / shares

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Risk-free interest rate

1.00%

0.77%

Expected annual volatility

33.00%

Weighted average grant date fair value per unit

$ 56.78

^[1]

$ 86.14

[1]

Stock-Based Compensation Plans - Additional Information 2 (Detail) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2015

Sep. 30, 2014

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

$ 13,426

$ 13,965

$ 46,328

$ 53,087

Performance Shares

2,400

1,400

$ 6,500

$ 6,100

^[1]

276,204

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

$ 56.78

^[1]

$ 86.14

Vesting period

3 years

Equity Awards

5,900

5,800

$ 19,800

$ 21,000

586,311

355,000

Restricted Stock Liability Awards

$ 52.35

$ 84.96

Vesting period

3 years

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

$ 4,400

$ 5,000

$ 16,100

$ 19,800

342,495

Restricted Stock Liability Awards | Employees

$ 56.01

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

295,000

208,000

Restricted Stock Liability Awards | Non Employee Director

$ 56.17

$ 87.24

Vesting period

3 years

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

48,000

64,000

Net cash provided from operating activities included:

$ 55.03

$ 87.97

[1]

Stock-Based Compensation Plans - Restricted Stock and Restricted Stock Units Outstanding (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	360,415
Granted	586,311	355,000
Vested	(338,327)
Forfeited	(28,994)
Outstanding, Ending Balance	579,405
Outstanding, Beginning Balance, weighted average grant date fair value	$ 79.60
Granted, weighted average grant date fair value	52.35	$ 84.96
Vested, weighted average grant date fair value	66.30
Forfeited, weighted average grant date fair value	64.88
Outstanding, Ending Balance, weighted average grant date fair value	$ 60.53
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	304,504
Granted	342,495
Vested	(260,622)
Forfeited	(8,294)
Outstanding, Ending Balance	378,083
Outstanding, Beginning Balance, weighted average grant date fair value	$ 80.33
Granted, weighted average grant date fair value	56.01
Vested, weighted average grant date fair value	68.39
Forfeited, weighted average grant date fair value	74.22
Outstanding, Ending Balance, weighted average grant date fair value	$ 66.67

Stock-Based Compensation Plans - Additional Information 3 (Detail) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Deferred compensation plan vesting period			3 years
Deferred compensation plan	$ (43,705)	$ (46,198)	$ (56,611)	$ (37,714)
Shares held in rabbi trust total	2.8		2.8		2.8
Vested shares held in rabbi trust	2.4		2.4		2.5

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($)
$ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Dec. 31, 2014

^[1]

Income taxes paid to taxing authorities

$ 100

$ 41

Interest paid

128,132

144,596

Non-cash investing and financing activities included:

Increase in asset retirement costs capitalized

19,862

^[1]

7,815

$ 56,822

(Decrease) increase in accrued capital expenditures

$ (195,472)

$ 41,707

[1]	Includes costs incurred whether capitalized or expensed.

Commitments and Contingencies - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2015 USD ($) MMBTU / d
Commitments And Contingencies Disclosure [Line Items]
Transportation commitments future minimum transportation fees due three months change \| $	$ 476.3
Period of transportation commitments future minimum transportation fees due three months change	14 years
Natural Gas \| Minimum
Commitments And Contingencies Disclosure [Line Items]
Transportation and gathering commitments contingent upon pipeline construction or modification, term of contract	2 years
Oil and Gas Delivery Commitments and Contracts, Daily Production	1,000
Natural Gas \| Maximum
Commitments And Contingencies Disclosure [Line Items]
Transportation and gathering commitments contingent upon pipeline construction or modification, term of contract	5 years
Oil and Gas Delivery Commitments and Contracts, Daily Production	40,000

Office Closing and Termination Costs - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost And Reserve [Line Items]
Termination costs	$ (77)	$ 8,371	$ 0	$ 6,290	$ 0
Additional accruals for severance costs				275
Stock-based compensation		2,999		1,720
Building lease		$ 0		3,156
Additional accruals for severance	$ 1,100			1,100
Oklahoma City Restructuring
Restructuring Cost And Reserve [Line Items]
Stock-based compensation				948
Other Restructuring
Restructuring Cost And Reserve [Line Items]
Stock-based compensation				$ 772

Office Closing and Termination Costs - Summary of Termination Costs (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement Of Financial Position [Abstract]
Termination costs		$ 5,372		$ 1,414
Building lease		0		3,156
Stock-based compensation expense		2,999		1,720
Total termination costs	$ (77)	$ 8,371	$ 0	$ 6,290	$ 0

Office Closing and Termination Costs - Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2014	Sep. 30, 2015
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance		$ 5,372
Additional accrued termination costs	$ 5,372	1,414
Accrued building rent		3,270
Payments		(7,793)
Ending balance	$ 5,372	$ 2,263

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($)
$ in Thousands

Sep. 30, 2015

Dec. 31, 2014

Natural gas and oil properties:

Properties subject to depletion

^[1]

$ 9,716,557

$ 9,624,725

Unproved properties

^[1]

940,064

943,246

Total

^[1]

10,656,621

10,567,971

Accumulated depletion and depreciation

^[1]

(2,871,827)

(2,590,398)

Natural gas and oil properties, successful efforts method, net

^[1]

$ 7,784,794

$ 7,977,573

[1]	Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($)
$ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2015

Sep. 30, 2014

Dec. 31, 2014

Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities [Line Items]

Acquisitions

^[1]

$ 0

$ 404,252

^[2]

Acreage purchases

^[1]

45,416

226,475

Development

^[1]

634,347

1,119,896

Gas gathering facilities:

Development

^[1]

10,914

13,137

Subtotal

^[1]

785,882

2,008,233

Asset retirement obligations

19,862

^[1]

$ 7,815

56,822

^[1]

Total costs incurred

^[1]

805,744

2,065,055

Drilling

Exploration:

Exploration costs incurred

^[1]

78,059

180,925

Expense

Exploration:

Exploration costs incurred

^[1]

14,975

58,979