Range Resources (RRC) 10-Q/A 16 Nov 16 2016 Q3 Quarterly report (amended) Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 24, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Trading Symbol	RRC
Entity Registrant Name	RANGE RESOURCES CORP
Entity Central Index Key	315,852
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		247,145,294

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents		$ 542	$ 471
Accounts receivable, less allowance for doubtful accounts of $5,555 and $4,994		183,883	123,842
Derivative assets		158,340	281,544
Inventory and other		36,445	33,217
Total current assets		379,210	439,074
Derivative assets		21,480	7,218
Goodwill		1,630,981
Natural gas and oil properties, successful efforts method	[1]	12,200,382	8,996,336
Accumulated depletion and depreciation	[1]	(2,994,282)	(2,635,031)
Natural gas and oil properties, successful efforts method, net	[1]	9,206,100	6,361,305
Other property and equipment		114,911	110,013
Accumulated depreciation and amortization		(96,603)	(90,558)
Other Property and equipment, net		18,308	19,455
Other assets		71,180	72,979
Total assets		11,327,259	6,900,031
Current liabilities:
Accounts payable		124,348	117,346
Asset retirement obligations		15,071	15,071
Accrued liabilities		294,253	188,028
Accrued interest		21,185	30,139
Derivative liabilities		7,277	1,136
Total current liabilities		462,134	351,720
Bank debt		930,669	86,427
Senior notes		2,847,564	738,101
Senior subordinated notes		48,476	1,826,775
Deferred tax liabilities		1,176,353	777,947
Derivative liabilities		3,934	21
Deferred compensation liabilities		119,645	104,792
Asset retirement obligations and other liabilities		277,671	254,590
Total liabilities		5,866,446	4,140,373
Commitments and contingencies			0
Stockholders’ Equity
Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding			0
Common stock, $0.01 par, 475,000,000 shares authorized, 247,145,228 issued at September 30, 2016 and 169,375,743 issued at December 31, 2015		2,471	1,693
Common stock held in treasury, 44,772 shares at September 30, 2016 and 59,283 shares at December 31, 2015		(1,701)	(2,245)
Additional paid-in capital		5,512,727	2,442,623
Retained earnings (deficit)		(52,684)	317,587
Total stockholders’ equity		5,460,813	2,759,658
Total liabilities and stockholders’ equity		$ 11,327,259	$ 6,900,031
[1]	Includes capitalized asset retirement costs and the associated accumulated amortization.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 5,555	$ 4,994
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	247,145,228	169,375,743
Common stock held in treasury, shares	44,772	59,283

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues and other income:
Natural gas, NGLs and oil sales		$ 304,477	$ 252,065	$ 738,570	$ 835,601
Derivative fair value income (loss)		64,556	202,004	(11,334)	290,052
Brokered natural gas, marketing and other		44,174	25,864	119,181	61,688
Total revenues and other income		413,207	479,933	846,417	1,187,341
Costs and expenses:
Direct operating		22,387	35,058	67,112	106,975
Transportation, gathering, processing and compression		138,764	99,634	400,871	284,258
Production and ad valorem taxes		6,717	7,336	18,653	26,506
Brokered natural gas and marketing		44,622	32,331	122,105	80,924
Exploration		6,943	4,235	18,641	17,146
Abandonment and impairment of unproved properties		6,082	12,366	23,769	36,187
General and administrative		41,024	46,178	127,745	150,471
Memorial merger expenses		33,791	0	36,412	0
Termination costs		136	(77)	303	6,290
Deferred compensation plan		(11,636)	(43,705)	30,166	(56,611)
Interest		45,967	42,904	121,464	125,590
Loss on early extinguishment of debt		0	22,495	0	22,495
Depletion, depreciation and amortization		131,489	153,993	374,440	453,178
Impairment of proved properties		0	502,233	43,040	502,233
Loss (gain) on the sale of assets		2,597	681	7,544	(2,053)
Total costs and expenses		468,883	915,662	1,392,265	1,753,589
Loss before income taxes		(55,676)	(435,729)	(545,848)	(566,248)
Income tax benefit:
Current		0	0	0	0
Deferred		(13,705)	(134,781)	(187,231)	(174,390)
Total income tax benefit		(13,705)	(134,781)	(187,231)	(174,390)
Net loss		$ (41,971)	$ (300,948)	$ (358,617)	$ (391,858)
Net loss per common share:
Basic		$ (0.23)	$ (1.81)	$ (2.09)	$ (2.36)
Diluted		(0.23)	(1.81)	(2.09)	(2.36)
Dividends paid per common share		$ 0.02	$ 0.04	$ 0.06	$ 0.12
Weighted average common shares outstanding:
Basic	[1]	180,683	166,517	171,571	166,327
Diluted		180,683	166,517	171,571	166,327
[1]	Includes common stock issued in connection with the exchange of 77.0 million shares for all outstanding Memorial common stock on September 16, 2016.

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net loss	$ (358,617)	$ (391,858)
Adjustments to reconcile net loss to net cash provided from operating activities:
Deferred income tax benefit	(187,231)	(174,390)
Depletion, depreciation and amortization and impairment	417,480	955,411
Exploration dry hole costs	2	87
Abandonment and impairment of unproved properties	23,769	36,187
Derivative fair value loss (income)	11,334	(290,052)
Cash settlements on derivative financial instruments	260,657	360,645
Allowance for bad debt	800	600
Amortization of deferred financing costs, loss on extinguishment of debt and other	5,383	27,572
Deferred and stock-based compensation	72,689	(10,679)
Loss (gain) on the sale of assets	7,544	(2,053)
Changes in working capital:
Accounts receivable	31,985	79,448
Inventory and other	(776)	(7,073)
Accounts payable	(41,268)	(13,158)
Accrued liabilities and other	(41,714)	(55,127)
Net cash provided from operating activities	202,037	515,560
Investing activities:
Additions to natural gas and oil properties	(339,446)	(901,227)
Additions to field service assets	(1,542)	(2,878)
Acreage purchases	(29,203)	(61,213)
Memorial Merger, net of cash acquired	7,180	0
Other	0	(75)
Proceeds from disposal of assets	191,834	14,825
Purchases of marketable securities held by the deferred compensation plan	(33,460)	(23,594)
Proceeds from the sales of marketable securities held by the deferred compensation plan	37,900	28,168
Net cash used in investing activities	(166,737)	(945,994)
Financing activities:
Borrowings on credit facilities	1,887,000	1,940,000
Repayments on credit facilities	(1,045,000)	(1,676,000)
Issuance of senior notes	0	750,000
Repayment of senior notes	(273,011)	0
Repayment of subordinated notes	0	(516,875)
Debt issuance costs and other	(6,381)	(14,156)
Dividends paid	(11,654)	(20,308)
Change in cash overdrafts	432	(40,123)
Proceeds from the sales of common stock held by the deferred compensation plan	10,385	7,938
Net cash (used in) provided from financing activities	(35,229)	430,476
Increase in cash and cash equivalents	71	42
Cash and cash equivalents at beginning of period	471	448
Cash and cash equivalents at end of period	542	490
Memorial
Financing activities:
Repayments on credit facilities	$ (597,000)	$ 0

Summary of Organization and Nat

Summary of Organization and Nature of Business	9 Months Ended
	Sep. 30, 2016
Industry Specific Policies [Abstract]
Summary of Organization and Nature of Business	(1) SUMMARY OF ORGANIZATION AND NATURE OF BUSINESS Range Resources Corporation 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 the North Louisiana 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

Basis of Presentation	9 Months Ended
	Sep. 30, 2016
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 2015 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 25, 2016. The results of operations for the third quarter and the nine months ended September 30, 2016 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. On September 16, 2016, we issued approximately 77.0 million shares of common stock in exchange for all outstanding shares of common stock of Memorial Resources Development Corp. (“Memorial”) using an exchange ratio of 0.375 of a share of Range common stock for each share of Memorial common stock. For additional information, see Note 4. In connection with the allocation of purchase price for this merger, approximately $1.6 billion has been recorded as goodwill. Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in the acquisition of a business. Goodwill is not amortized, but rather is tested for impairment annually or when events and changes in circumstances indicate that the fair value of a reporting unit with goodwill has been reduced below carrying value. We assess goodwill for impairment annually on November 1, or more frequently as circumstances require. The impairment test requires allocating goodwill and other assets and liabilities to a reporting unit level, which is represented by our oil and natural gas operations in the United States. The fair value of a reporting unit is determined and compared to the book value of the reporting unit. If the fair value of the reporting unit is less than the book value, including goodwill, then the recorded goodwill is impaired to its implied fair value with a charge to impairment expense. Inventory. As of September 30, 2016, we had $13.6 million of material and supplies inventory compared to $20.8 million at December 31, 2015. Material and supplies inventory consist of primarily tubular goods and equipment used in our operations and is stated at lower of specific cost of each inventory item or market. At September 30, 2016, we also had commodity inventory of $13.6 million compared to $4.8 million at December 31, 2015. Commodity inventory as of September 30, 2016 consists of natural gas and NGLs held in storage or as line fill in pipelines.

New Accounting Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2016
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Standards	(3) NEW ACCOUNTING STANDARDS Not Yet Adopted In May 2014, an accounting standards update was issued that supersedes the existing revenue recognition requirements. This standard includes a five-step revenue recognition model to depict the transfer of goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Among other things, the standard also eliminates industry-specific revenue guidance, requires enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. This standard is effective for us in first quarter 2018 and will be applied retrospectively to each prior reporting period presented or with the cumulative effect of initially applying the update recognized at the date of initial application. Early adoption is permitted with an effective date no earlier than first quarter 2017. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated results of operations, financial position, cash flows or financial disclosures. In August 2014, an accounting standards update was issued 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 fourth quarter 2016 and early adoption is permitted. We do not expect the adoption of this standard to have a significant impact on our consolidated results of operations, financial position, cash flows or financial disclosures. In February 2016, an accounting standards update was issued that requires an entity to recognize a right-of-use asset and lease liability for all leases with terms of more than 12 months. Classification of leases as either a finance or operating lease will determine the recognition, measurement and presentation of expenses. This accounting standard update also requires certain quantitative and qualitative disclosures about leasing arrangements. This standard is effective for us in first quarter 2019 and should be applied using a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements and early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact it may have, if any, on our consolidated results of operations, financial position or cash flows. In March 2016, an accounting standards update was issued that simplifies several aspects of the accounting for share-based payment award transactions. Among other things, this new guidance will require all income tax effects of share-based awards to be recognized in the statement of operations when the awards vest or are settled, will allow an employer to repurchase more of an employee’s shares for tax withholding purposes than it can today without triggering liability accounting and will allow a policy election to account for forfeitures as they occur. This standard is effective for us in first quarter 2017 with prospective application and early adoption is permitted. We are evaluating the provisions of this accounting standards update and assessing the impact it may have, if any, on our consolidated results of operations, financial position or cash flows. In August 2016, an accounting standards update was issued that clarifies how entities classify certain cash receipts and cash payments on the statement of cash flows. The guidance is effective for us in first quarter 2018 and will be applied retrospectively with early adoption permitted. We are evaluating the provisions of this accounting standards update and assessing the impact, if any, it may have on our consolidated cash flow statement presentation. Recently Adopted In April 2015, an accounting standards update was issued that requires debt issuance costs to be presented in the balance sheet as a direct reduction from the associated debt liability. This standard was effective for the reporting period beginning on January 1, 2016 with early adoption permitted. As of December 31, 2015, we adopted this standard retrospectively and have accounted for the debt issuance costs as a reduction of the associated debt liability. This adoption only affected our consolidated balance sheets and did not have an impact on our consolidated results of operations or cash flows. In November 2015, an accounting standards update was issued which requires entities to classify all deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amounts. This standard is effective for the reporting period beginning January 1, 2017 with early adoption permitted. As of December 31, 2015, we adopted this standard retrospectively and reclassified our current deferred tax assets and liabilities into non-current deferred tax assets and liabilities. This adoption only affected our consolidated balance sheets and did not have an impact on our consolidated results of operations or cash flows.

Acquisitions and Dispositions

Acquisitions and Dispositions	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Acquisitions and Dispositions	(4) ACQUISITIONS AND DISPOSITIONS Memorial Merger On September 16, 2016, Range Resources Corporation completed its merger with Memorial (the “Memorial Merger,”) which was accomplished through the merger of Medina Merger Sub, Inc., a Delaware corporation and a direct, wholly-owned subsidiary of Range, with and into Memorial, with Memorial surviving as a wholly-owned subsidiary of Range. The results of Memorial’s operations since the effective time of the merger are included in our consolidated statement of operations. The merger was effected through the issuance of approximately 77.0 million shares of Range common stock in exchange for all outstanding shares of Memorial using an exchange ratio of 0.375 of a share of Range common stock for each share of Memorial common stock. At the effective time of the merger, Memorial’s liabilities, which are reflected in Range’s consolidated financial statements, included approximately $1.2 billion fair value of outstanding debt. In connection with the Memorial Merger, we have incurred merger-related costs of approximately $36.4 million to date including consulting, investment banking, advisory, legal and other merger-related fees. Allocation of Purchase Price. The Memorial Merger has been accounted for as a business combination, using the acquisition method. The following table represents the preliminary allocation of the total purchase price of the Memorial Merger to the assets acquired and the liabilities assumed based on the fair value at the effective time of the merger, with any excess of the purchase price over the estimated fair value of the identifiable net assets acquired recorded as goodwill. Certain data necessary to complete the purchase price allocation is not yet available, and includes, but is not limited to, valuation of pre-merger contingencies, final tax returns that provide the underlying tax basis of Memorial’s assets and liabilities and final appraisals of assets acquired and liabilities assumed. We expect to complete the purchase price allocation during the 12-month period following the merger date, in line with the acquisition method of accounting, during which time the value of the assets and liabilities, including goodwill, may be revised as appropriate. The following table sets forth our preliminary purchase price allocation (in thousands, except shares and stock price): Purchase price: Shares of Range common stock issued to Memorial stockholders 77,042,749 Range common stock price per share on September 15, 2016 (close) $ 39.37 Total purchase price $ 3,033,173 Plus fair value of liabilities assumed by Range: Accounts payable 54,905 Other current liabilities 96,734 Long-term debt 1,204,449 Deferred taxes 583,575 Other long-term liabilities 19,169 Total purchase price plus liabilities assumed $ 4,992,005 Fair value of Memorial assets: Cash and equivalents $ 7,180 Other current assets 93,911 Derivative instruments 152,994 Oil and gas properties: Proved property 1,096,035 Unproved property 2,007,200 Other property and equipment 3,579 Goodwill (a) 1,630,981 Other 125 Total asset value $ 4,992,005 (a) The fair value measurements of derivative instruments assumed were determined based on published forward commodity price curves as of the date of the Memorial Merger and represent Level 2 inputs. Derivative instruments in an asset position include a measure of counterparty nonperformance risk and the fair values of commodity derivative instruments in a liability position include a measure of our own nonperformance risk, each based on the current published credit default swap rates. The fair value measurements of long-term debt were estimated based on published market prices and represent Level 1 inputs. The fair value measurements of oil and natural gas properties and asset retirement obligations are based on inputs that are not observable in the market and therefore represent Level 3 inputs. The fair value of oil and natural gas properties and asset retirement obligations were measured using valuation techniques that convert future cash flows to a single discounted amount. Significant inputs to the valuation of oil and natural gas properties include estimates of: (i) recoverable reserves; (ii) production rates; (iii) future operating and development costs; (iv) future commodity prices; and (v) a market-based weighted average costs of capital rate. These inputs require significant judgments and estimates by management at the time of the valuation and may be subject to change. Management utilized the assistance of a third party valuation expert to estimate the value of the oil and natural gas properties acquired. In some cases, certain amounts allocated to unproved properties are based on a market approach using third party published data which provides lease pricing information based on certain geographic areas and represent Level 2 inputs. Goodwill is attributed to net deferred tax liabilities arising from the differences between the purchase price allocated to Memorial’s assets and liabilities based on fair value and the tax basis of these assets and liabilities. In addition, the total consideration for the merger included a control premium, which resulted in a higher value compared to the fair value of net assets acquired. There are also other qualitative assumptions of long-term factors that the merger creates for Range stockholders including additional potential for exploration and development opportunities, additional scale and efficiencies in other basins in which we operate and substantial operating and administrative synergies. The results of operations attributable to Memorial are included in our consolidated statement of operations beginning on September 16, 2016. Revenues of $21.1 million and field net operating income of $12.3 million from Memorial were generated from September 16, 2016 to September 30, 2016. Pro forma Financial Information. The following pro forma condensed combined financial information was derived from the historical financial statements of Range and Memorial and gives effect to the merger as if it had occurred on January 1, 2015. The below information reflects pro forma adjustments for the issuance of Range common stock in exchange for Memorial’s outstanding shares of common stock, as well as pro forma adjustments based on available information and certain assumptions that we believe are reasonable, including (i) the depletion of Memorial’s fair-valued proved oil and gas properties and (ii) the estimated tax impacts of the pro forma adjustments. Additionally, pro forma earnings for the three and nine months ended September 30, 2016 were adjusted to exclude $33.8 million for third quarter 2016 and $36.4 million for first nine months 2016 of merger-related costs incurred by Range and $9.3 million incurred by Memorial. The pro forma results of operations do not include any cost savings or other synergies that may result from the Memorial Merger or any estimated costs that have been or will be incurred by us to integrate the Memorial assets. The pro forma condensed combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have actually occurred had the Memorial Merger taken place on January 1, 2015. In addition, the pro forma financial information below is not intended to be a projection of future results (in thousands, except per share amounts). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Revenues $ 521,668 $ 716,753 $ 1,080,767 $ 1,667,516 Net loss $ (17,882 ) $ (223,154 ) $ (427,946 ) $ (268,433 ) Loss per share: Basic $ (0.07 ) $ (0.92 ) $ (1.75 ) $ (1.10 ) Diluted $ (0.07 ) $ (0.92 ) $ (1.75 ) $ (1.10 ) 2016 Dispositions We recognized a pretax net loss on the sale of assets of $2.6 million in third quarter 2016 compared to a pretax net loss of $681,000 in the same period of the prior year and a pretax net loss on the sale of assets of $7.5 million in the nine months ended September 30, 2016 compared to a pretax net gain of $2.1 million in the same period of the prior year. Western Oklahoma. In first six months 2016, we sold certain properties in Western Oklahoma for proceeds of $77.7 million and we recorded a loss of $6.2 million related to this sale, after closing adjustments and transaction fees. In third quarter 2016, we sold additional properties in Western Oklahoma for proceeds of $900,000 and we recorded a loss of $2.6 million. Pennsylvania. In first quarter 2016, we sold our non-operated interest in certain wells and gathering facilities in northeast Pennsylvania for proceeds of $111.5 million. After closing adjustments, we recorded a loss of $2.1 million related to this sale. Other. In third quarter 2016, we sold miscellaneous inventory and surface property for proceeds of $131,000 resulting in a gain of $30,000. In first six months 2016, we sold miscellaneous proved and unproved properties, inventory, other assets and surface acreage for proceeds of $1.7 million resulting in a loss of $198,000. Included in the $1.7 million of proceeds is $1.2 million received from the sale of proved properties in Mississippi and South Texas. 2015 Dispositions In third quarter 2015, we sold miscellaneous unproved properties and inventory for proceeds of $524,000 resulting in a loss of $681,000. In first six months 2015, we sold miscellaneous unproved property, proved property and inventory for proceeds of $14.3 million resulting in a 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.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	(5) INCOME TAXES Income tax benefit was as follows (in thousands): Three Months Ended Nine Months Ended September 30, 2016 2015 2016 2015 Income tax benefit $ (13,705 ) $ (134,781 ) $ (187,231 ) $ (174,390 ) Effective tax rate 24.6 % 30.9 % 34.3 % 30.8 % 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. 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, 2016 and 2015, 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, 2016 includes $5.3 million income tax expense related to Memorial Merger transaction costs that are not deductible for tax purposes. The three months ended September 30, 2016 also includes $2.8 million and the nine months ended September 30, 2016 includes $10.5 million of tax expense related to an increase in our valuation allowance for state net operating loss carryforwards that we do not believe are realizable. The three months ended September 30, 2016 includes an income tax benefit of $682,000 and the nine months ended September 30, 2016 includes an income tax expense of $1.8 million to adjust the valuation allowance on our deferred tax asset related to future deferred compensation plan distributions of our senior executives. In addition, for the nine months ended September 30, 2016, we recorded income tax expense of $3.7 million related to equity compensation because our compensation expense recorded for financial reporting exceeded our corresponding income tax deduction. The three months ended September 30, 2015 includes income tax expense of $8.5 million and the nine months ended September 30, 2015 includes income tax expense of $19.8 million related to increases in our valuation allowances for state net operating loss carryforwards and credit carryforwards. The three months ended September 30, 2015 also includes income tax benefit of $2.6 million and the nine months ended September 30, 2015 includes 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 Per Common Share

Loss Per Common Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Loss Per Common Share	(6) LOSS 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 shareholders 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, 2016 2015 2016 2015 Net loss, as reported $ (41,971 ) $ (300,948 ) $ (358,617 ) $ (391,858 ) Participating earnings (a) (56 ) (114 ) (167 ) (338 ) Basic net loss attributed to common (42,027 ) (301,062 ) (358,784 ) (392,196 ) Reallocation of participating earnings (a) — — — — Diluted net loss attributed to common shareholders $ (42,027 ) $ (301,062 ) $ (358,784 ) $ (392,196 ) Net loss per common share: Basic $ (0.23 ) $ (1.81 ) $ (2.09 ) $ (2.36 ) Diluted $ (0.23 ) $ (1.81 ) $ (2.09 ) $ (2.36 ) (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 Nine Months Ended 2016 2015 2016 2015 Weighted average common shares outstanding – basic (1) 180,683 166,517 171,571 166,327 Effect of dilutive securities: Director and employee SARs — — — — Weighted average common shares outstanding – diluted 180,683 166,517 171,571 166,327 (1) Weighted average common shares outstanding-basic for both the three months ended September 30, 2016 and the three months ended September 30, 2015 excludes 2.8 million shares of restricted stock held in our deferred compensation plan (although all awards are issued and outstanding upon grant). Weighted average common shares outstanding-basic for both the nine months ended September 30, 2016 and the nine months ended September 30, 2015 also exclude 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 nine months ended September 30, 2016 and 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.

Suspended Exploratory Well Cost

Suspended Exploratory Well Costs	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
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 September 30, 2016. The following table reflects the change in capitalized exploratory well costs for the nine months ended September 30, 2016 and the year ended December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Balance at beginning of period $ 4,161 $ 2,996 Additions to capitalized exploratory well costs pending the determination of proved reserves 1,684 1,165 Reclassifications to wells, facilities and equipment based on determination of proved reserves (5,845 ) — Divested wells — — Balance at end of period — 4,161 Less exploratory well costs that have been capitalized for a period of one year or less — (1,165 ) Capitalized exploratory well costs that have been capitalized for a period greater than one year $ — $ 2,996 Number of projects that have exploration well costs that have been capitalized greater than one year — 1

Indebtedness

Indebtedness	9 Months Ended
	Sep. 30, 2016
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, 2016 is shown parenthetically) (in thousands). No interest was capitalized during the three or nine months ended September 30, 2016 or the year ended December 31, 2015. September 30, 2016 December 31, 2015 Bank debt (2.0%) (a) $ 937,000 $ 95,000 Senior notes: 4.875% senior notes due 2025 750,000 750,000 5.00% senior notes due 2023 741,514 — 5.00% senior notes due 2022 580,032 — 5.875% senior notes due 2022 (b) 329,244 — 5.75% senior notes due 2021 475,952 — Other senior notes due 2022 (c) 1,090 — Total senior notes 2,877,832 750,000 Senior subordinated notes: 5.00% senior subordinated notes due 2023 7,712 750,000 5.00% senior subordinated notes due 2022 19,054 600,000 5.75% senior subordinated notes due 2021 22,214 500,000 Total senior subordinated notes 48,980 1,850,000 Total debt 3,863,812 2,695,000 Unamortized premium 7,552 — Unamortized debt issuance costs (44,655 ) (43,697 ) Total debt net of debt issuance costs $ 3,826,709 $ 2,651,303 (a) (b) (c) 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. 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 17, 2016, our borrowing base was reaffirmed at $3.0 billion and our bank commitment was also reaffirmed at $2.0 billion. As of September 30, 2016, our bank group was composed of twenty-nine financial institutions with no one bank holding more than 5.8% of the total facility. The borrowing base may be increased or decreased based on our request and sufficient proved reserves, as determined by the bank group. The commitment amount may be increased to the borrowing base, subject to payment of a mutually acceptable commitment fee to those banks agreeing to participate in the facility increase. As of September 30, 2016, the outstanding balance under our bank credit facility was $937.0 million, before deducting debt issuance costs. Additionally, we had $253.9 million of undrawn letters of credit leaving $809.1 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 facility agreement) plus a spread ranging from 0.25% to 1.25% or LIBOR borrowings at the LIBOR Rate (as defined in the bank credit facility 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 2.3% for the three months ended September 30, 2016 compared to 1.7% for the three months ended September 30, 2015. The weighted average interest rate was 2.3% for the nine months ended September 30, 2016 compared to 1.7% for the nine months ended September 30, 2015. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At September 30, 2016, 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. Senior Notes In May 2015, we issued $750.0 million aggregate principal amount of 4.875% senior notes due 2025 (the “Outstanding Notes”) for net proceeds of $737.4 million after underwriting discounts and commissions of $12.6 million. The notes were issued at par and were offered to qualified institutional buyers and non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act of 1933, as amended (the “Securities Act”). On April 8, 2016, all of the Outstanding Notes were exchanged for an equal principal amount of registered 4.875% senior notes due 2025 pursuant to an effective registration statement on Form S-4 filed with the SEC on February 29, 2016 under the Securities Act (the “Exchange Notes”). The Exchange Notes are identical to the Outstanding Notes except the Exchange Notes are registered under the Securities Act and do not have restrictions on transfer, registration rights or provisions for additional interest. Under certain circumstances, if we experience a change of control, noteholders may require us to repurchase all of our senior notes at 101% of the aggregate principal amount plus accrued and unpaid interest, if any. Senior Note Exchange and Cash Tender Offer On September 16, 2016, we completed a debt exchange offer to exchange all validly tendered and accepted Memorial senior notes assumed in the Memorial Merger. We exchanged 54.9% of the outstanding Memorial senior notes, whereby we issued $329.2 million senior unsecured 5.875% notes due 2022 (the “5.875% Notes”). The 5.875% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulations S under the Securities Act. Interest on the 5.875% Notes is payable in January and July and will mature on July 1, 2022 and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after April 1, 2022, we may redeem the 5.875% Notes in whole or in part and from time to time, at 100% of the principal amount, plus accrued and unpaid interest. The 5.875% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future senior unsecured debt and rank senior to all of our existing and future subordinated debt. The deferred financing cost for this exchange was $6.3 million. The early cash tender premium paid was $4.1 million, which was paid to note holders who tendered their notes within the ten business day early offer period. Also on September 16, 2016, we completed our concurrent offer to purchase for cash the Memorial senior notes assumed in the Memorial Merger. We were able to purchase 44.9% of the outstanding Memorial senior notes, or $269.7 million principal amount of the senior notes assumed in the Memorial Merger, which we purchased for cash. The early cash tender premium paid was $3.3 million which was paid to note holders who tendered their notes within the ten business days early offer period. The cash tender offer and early cash tender premium were financed with borrowings under our bank credit facility. Both the offer to exchange and the cash tender offer for the 5.875% senior notes assumed in the Memorial Merger were subject to the consummation of the merger. Concurrently with the Memorial senior note exchange offer and cash tender offer, we also solicited consents from the eligible holders to amend the indenture that governed the existing Memorial senior notes. The amendments included eliminating certain of the covenants, restrictive provisions, reporting requirements and events of default. Once a majority of consents were received, the amendments were accepted for all existing Memorial senior note holders, even if the senior notes were not tendered in either the exchange offer or cash tender offer. Senior Subordinated Note Exchange On September 16, 2016, we also completed our debt exchange offer to exchange all validly tendered and accepted Range senior subordinated notes as detailed below (in thousands): Existing Note New Note Principal Amount of Existing Notes Validly Tendered Approximate Percentage Validly Tendered 5.00% senior subordinated notes due 2023 5.00% senior notes due 2023 $742,291 99.0% 5.00% senior subordinated notes due 2022 5.00% senior notes due 2022 $580,946 96.8% 5.75% senior subordinated notes due 2021 5.75% senior notes due 2021 $477,786 95.6% We recorded $6.6 million of third party costs in interest expense in third quarter 2016 related to this exchange. The new senior notes were issued at par and were offered to qualified institutional buyers and non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act. A $3.5 million premium was recorded in connection with the exchange for certain holders that participated in the exchange after the early tender period and received 95% of face amount tendered in exchange consideration. Interest on the new 5.00% senior notes due 2023 is payable in March and September with a maturity date of March 15, 2023. Interest on the new 5.00% senior notes due 2022 is payable in February and August with a maturity of August 15, 2022. Interest on the new 5.75% senior notes due 2021 is payable in June and December with a maturity date of June 1, 2021. All of the new senior notes are unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. The new senior notes are unsecured and are subordinated to all of our existing and future senior secured debt and rank senior to all of our existing and future subordinated debt. Under certain circumstances, if we experience a change of control, noteholders may require us to repurchase all of our senior notes at 101% of the aggregate principal amount plus accrued and unpaid interest, if any. Concurrently with the senior subordinated notes exchange offer, we also solicited consents from the eligible holders to amend the indentures that governed each of the existing senior subordinated notes. The amendments included eliminating certain of the covenants, restrictive provisions, reporting requirements and events of default. Once a majority of consents were received, the amendments were accepted for all senior subordinated notes holders, even if the remaining senior subordinated notes were not exchanged. The offer to exchange the senior subordinated notes was subject to the consummation of the Memorial Merger. 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 are subordinated to existing and future senior debt that we or our subsidiary guarantors are permitted to incur. 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 (including the guarantees by our new Memorial Merger 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 bank credit facility agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the bank credit facility 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, 2016.

Asset Retirement Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2016
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. A reconciliation of our liability for plugging and abandonment costs for the nine months ended September 30, 2016 is as follows (in thousands): Nine Months 2016 Beginning of period $ 264,137 Acquisition of wells 16,600 Liabilities incurred 1,516 Liabilities settled (8,153 ) Disposition of wells (4,731 ) Accretion expense 12,231 Change in estimate 3,139 End of period 284,739 Less current portion (15,071 ) Long-term asset retirement obligations $ 269,668 Accretion expense is recognized as a component of depreciation, depletion and amortization expense in the accompanying consolidated statements of operations.

Capital Stock

Capital Stock	9 Months Ended
	Sep. 30, 2016
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 2015: Nine Months Year Beginning balance 169,316,460 168,628,177 Memorial Merger 77,042,749 — SARs exercised — 77,002 Restricted stock grants 464,428 335,103 Restricted stock units vested 263,047 252,507 Shares retired (739 ) — Treasury shares issued 14,511 23,671 Ending balance 247,100,456 169,316,460

Derivative Activities

Derivative Activities	9 Months Ended
	Sep. 30, 2016
Derivative Instruments And Hedging Activities Disclosure [Abstract]
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 options 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 $150.9 million at September 30, 2016. These contracts expire monthly through December 2018. The following table sets forth our commodity-based derivative volumes by year as of September 30, 2016, excluding our basis and freight swaps which are discussed separately below: Period Contract Type Volume Hedged Weighted Natural Gas 2016 Swaps (1) 901,739 Mmbtu/day $ 3.32 2017 Swaps (1) 478,192 Mmbtu/day $ 3.14 2018 Swaps 70,000 Mmbtu/day $ 2.92 2016 Collar (1) 32,609 Mmbtu/day $ 4.00-$ 4.71 2017 Collar (1) 34,521 Mmbtu/day $ 4.00-$ 5.06 2016 Purchased Put (1) 218,478 Mmbtu/day $ 3.54 (2) 2017 Purchased Put (1) 175,890 Mmbtu/day $ 3.48 (3) Crude Oil 2016 Swaps (1) 8,640 bbls/day $ 69.49 2017 Swaps (1) 5,416 bbls/day $ 57.18 2018 Swaps 500 bbls/day $ 54.25 2016 Collar (1) 848 bbls/day $ 80.00-$ 99.70 NGLs (C2-Ethane) 2016 Swaps (1) 5,839 bbls/day $ 0.46/gallon 2017 Swaps 3,000 bbls/day $ 0.27/gallon NGLs (C3-Propane) 2016 Swaps (1) 11,142 bbls/day $ 0.75/gallon 2017 Swaps 6,966 bbls/day $ 0.52/gallon NGLs (iC4-isobutane) 2016 Swaps (1) 1,969 bbls/day $ 1.21/gallon NGLs (NC4-Normal Butane) 2016 Swaps (1) 6,071 bbls/day $ 0.72/gallon 2017 Swaps 1,500 bbls/day $ 0.65/gallon NGLs (C5-Natural Gasoline) 2016 Swaps (1) 8,142 bbls/day $ 1.36/gallon 2017 Swaps 2,000 bbls/day $ 0.98/gallon (1) (2 ) (3) 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 swaps above, at September 30, 2016, 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 December 2017 and include a total volume of 59,385,000 Mmbtu. The fair value of these contracts was a gain of $13.8 million on September 30, 2016. At September 30, 2016, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indices. The contracts settle monthly through December 2017 and include a total volume of 525,000 barrels in 2016 and 1,837,500 barrels in 2017. The fair value of these contracts was a gain of $4.1 million on September 30, 2016. Freight Swap Contracts In connection with our international propane spread swaps, at September 30, 2016, we had freight swap contracts which lock in the freight rate for a specific trade route on the Baltic Exchange. These contracts settle monthly in fourth quarter 2016 and fourth quarter 2017 and cover 5,000 metric tons per month with a fair value loss of $155,000 on September 30, 2016. These contracts use observable third-party pricing inputs that we consider to be a Level 2 fair value classification. Derivative Assets and Liabilities The combined fair value of derivatives included in the accompanying consolidated balance sheets as of September 30, 2016 and December 31, 2015 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, 2016 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 $ 68,069 $ (24,934 ) $ 43,135 –basis swaps 15,066 (1,191 ) 13,875 –collars 15,086 — 15,086 –puts 50,792 (145 ) 50,647 Crude oil –swaps 29,696 (1,292 ) 28,404 –collars 2,416 — 2,416 NGLs –C2 ethane swaps 6,332 (185 ) 6,147 –C3 propane swaps 8,535 (3,719 ) 4,816 –C3 propane spread swaps 12,585 (8,506 ) 4,079 –NC4 butane swaps 1,282 (371 ) 911 –iC4 isobutane swaps 3,557 — 3,557 –C5 natural gasoline swaps 9,722 (2,820 ) 6,902 Freight –swaps 2 (157 ) (155 ) $ 223,140 $ (43,320 ) $ 179,820 September 30, 2016 Gross Amounts of Recognized (Liabilities) Gross Amounts Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (31,557 ) $ 24,934 $ (6,623 ) –basis swaps (1,278 ) 1,191 (87 ) –puts — 145 145 Crude oil –swaps (2,456 ) 1,292 (1,164 ) NGLs –C2 ethane swaps (185 ) 185 — –C3 propane swaps (3,538 ) 3,719 181 –C3 propane spread swaps (8,506 ) 8,506 — –NC4 butane swaps (2,407 ) 371 (2,036 ) –C5 natural gasoline swaps (4,447 ) 2,820 (1,627 ) Freight –swaps (157 ) 157 — $ (54,531 ) $ 43,320 $ (11,211 ) December 31, 2015 Gross Amounts of Assets Gross Amounts Net Amounts of Derivative assets: Natural gas –swaps $ 219,357 $ (10,245 ) $ 209,112 –basis swaps 8,251 (2,765 ) 5,486 Crude oil –swaps 38,699 — 38,699 NGLs –C3 propane swaps 15,884 — 15,884 –C3 propane spread swaps 2,497 (2,497 ) — –NC4 butane swaps 6,968 — 6,968 –C5 natural gasoline swaps 12,694 (81 ) 12,613 $ 304,350 $ (15,588 ) $ 288,762 December 31, 2015 Gross Amounts of (Liabilities) Gross Amounts Net Amounts of Derivative (liabilities): Natural gas –swaps $ (10,245 ) $ 10,245 $ — –basis swaps (2,786 ) 2,765 (21 ) NGLs –C3 propane spread swap (3,633 ) 2,497 (1,136 ) –C5 natural gasoline swaps (81 ) 81 — $ (16,745 ) $ 15,588 $ (1,157 ) The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands): Three Months Ended September 30, Derivative Fair Value Income (Loss) 2016 2015 Commodity swaps $ 38,662 $ 198,245 Re-purchased swaps — 1,683 Collars 1,320 5,626 Puts 2,842 — Basis swaps 21,853 (3,550 ) Freight swaps (121 ) — Total $ 64,556 $ 202,004 \ Nine Months Ended September 30, Derivative Fair Value Income (Loss) 2016 2015 Commodity swaps $ (40,270 ) $ 281,921 Re-purchased swaps — 1,683 Collars 1,320 12,391 Puts 2,842 — Basis swaps 24,929 (5,943 ) Freight swaps (155 ) — Total $ (11,334 ) $ 290,052

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2016
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. Significant uses of fair value measurements include: • impairment assessments of long-lived assets; • impairment assessments of goodwill; and • recorded value of derivative instruments. The need to test long-lived assets and goodwill can be based on several indicators, including a significant reduction in prices of natural gas, oil and condensate, NGLs, sustained declines in our common stock, unfavorable adjustments to reserves, significant changes in the expected timing of production, other changes to contracts or changes in the regulatory environment in which a property is located. 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, 2016 using: Quoted Prices Significant Significant Total Trading securities held in the deferred compensation plans $ 60,955 $ — $ — $ 60,955 Derivatives – — 82,603 — 82,603 –collars — 17,502 — 17,502 –puts — 50,792 — 50,792 –basis swaps — 17,867 — 17,867 –freight swaps — (155 ) — (155 ) Fair Value Measurements at December 31, 2015 using: Quoted Prices Significant Significant Total Trading securities held in the deferred compensation plans $ 62,376 $ — $ — $ 62,376 Derivatives – — 283,276 — 283,276 –basis swaps — 4,329 — 4,329 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 2016, interest and dividends were $192,000 and the mark-to-market adjustment was a gain of $2.3 million compared to interest and dividends of $164,000 and a mark-to-market loss of $4.5 million in third quarter 2015. For the nine months ended September 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 nine months ended September 30, 2016, 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 also considered the potential sale of certain of these properties. We recorded non-cash impairment charges during the nine months ended September 30, 2016 of $43.0 million related to our natural gas and oil properties in Western Oklahoma. We recorded non-cash charges during the three months and the nine months ended September Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Fair Value Impairment Fair Value Impairment Fair Value Impairment Fair Value Impairment Natural gas and oil properties $ — $ — $ 98,872 $ 502,233 $ 90,150 $ 43,040 $ 98,872 $ 502,233 Goodwill as of September 30, 2016 is associated with the Memorial Merger, which may be revised as we complete our purchase price allocation for that transaction. We assess goodwill for impairment annually on November 1, or more frequently as circumstances require. At September 30, 2016, we performed a qualitative assessment by examining relevant events and circumstances that could have a negative impact on goodwill, such as macroeconomic conditions, industry and market conditions, including current commodity prices, earnings and cash flows, overall financial performance and other relevant entity-specific events. Based on our qualitative assessment of these circumstances, we concluded a full impairment test was not warranted. Fair Values—Reported The following table presents the carrying amounts and the fair values of our financial instruments as of September 30, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Carrying Fair Carrying Fair Assets: Commodity swaps, options and basis swaps $ 179,820 $ 179,820 $ 288,762 $ 288,762 Marketable securities (a) 60,955 60,955 62,376 62,376 (Liabilities): Commodity swaps, options and basis swaps (11,211 ) (11,211 ) (1,157 ) (1,157 ) Bank credit facility (b) (937,000 ) (937,000 ) (95,000 ) (95,000 ) Deferred compensation plan (c) (148,829 ) (148,829 ) (122,918 ) (122,918 ) 5.75% senior notes due 2021 (b) (475,952 ) (482,496 ) — — 5.00% senior notes due 2022 (b) (580,032 ) (577,132 ) — — 5.875% senior notes due 2022 (b) (329,244 ) (332,536 ) — — Other senior notes due 2022 (b) (1,090 ) (1,091 ) — — 5.00% senior notes due 2023 (b) (741,514 ) (723,903 ) — — 4.875% senior notes due 2025 (b) (750,000 ) (721,875 ) (750,000 ) (572,813 ) 5.75% senior subordinated notes due 2021 (b) (22,214 ) (22,408 ) (500,000 ) (396,250 ) 5.00% senior subordinated notes due 2022 (b) (19,054 ) (18,506 ) (600,000 ) (447,000 ) 5.00% senior subordinated notes due 2023 (b) (7,712 ) (7,490 ) (750,000 ) (551,250 ) (a) Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges. (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. (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 10. Concentrations of Credit Risk As of September 30, 2016, our primary concentrations of credit risk are the risks of not collecting accounts receivable and the risk of a 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 $5.5 million at September 30, 2016 and $5.0 million at December 31, 2015. As of September 30, 2016, our derivative contracts consist of swaps and options. Our derivative exposure to credit risk is diversified primarily 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, 2016, our derivative counterparties include twenty-four financial institutions, of which all but six are secured lenders in our bank credit facility. At September 30, 2016, our net derivative assets include a net receivable from these six counterparties that are not participants in our bank credit facility of $24.1

Stock-Based Compensation Plans

Stock-Based Compensation Plans	9 Months Ended
	Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation Plans	(13) STOCK-BASED COMPENSATION PLANS Stock-Based Awards We have one active equity-based stock plan, our Amended and Restated 2005 Equity-Based Incentive Compensation Plan, which we refer to as 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. 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 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. In 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, with the exception of employment termination due to death, disability or retirement. In first quarter 2014, the Compensation Committee also 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 based on their distribution elections. Compensation expense is recognized over 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, with the exception of employment termination due to death, disability or retirement. 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 Nine Months Ended 2016 2015 2016 2015 Direct operating expense $ 497 $ 609 $ 1,781 $ 2,149 Brokered natural gas and marketing expense 455 618 1,349 1,743 Exploration expense 608 688 1,669 2,171 General and administrative expense 11,126 11,512 37,682 38,545 Termination costs — (1 ) — 1,720 Total stock-based compensation $ 12,686 $ 13,426 $ 42,481 $ 46,328 Performance Share Unit Awards The following is a summary of our non-vested PSU awards outstanding at September 30, 2016: Units Weighted Outstanding at December 31, 2015 262,124 $ 64.77 Units granted (a) 413,959 36.64 Units vested (175,306 ) 53.01 Units forfeited (42,603 ) 46.09 Outstanding at September 30, 2016 458,174 $ 45.60 (a) The following assumptions were used to estimate the fair value of PSUs granted during first nine months 2016 and 2015: Nine Months Ended September 30, 2016 2015 Risk-free interest rate 0.94 % 1.0 % Expected annual volatility 49 % 33 % Weighted average grant date fair value per unit $ 36.64 $ 56.78 We recorded PSU compensation expense of $9.1 million in first nine months 2016 compared to $6.5 million in the same period of 2015. Restricted Stock Awards Equity Awards In first nine months 2016, we granted 940,000 restricted stock Equity Awards to employees at an average grant price of $28.18 compared to 586,000 restricted stock Equity Awards granted to employees at an average grant price of $52.35 in first nine months 2015. These awards generally vest over a three-year period. We recorded compensation expense for these Equity Awards of $17.2 million in first nine months 2016 compared to $19.8 million in the same period of 2015. 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 2016, we granted 457,000 shares of restricted stock Liability Awards as compensation to employees at an average price of $35.70 with vesting over a three-year period and 56,000 shares were granted to non-employee directors at an average price of $38.62 with immediate vesting. In first nine months 2015, we granted 295,000 shares of Liability Awards as compensation to employees at an average price of $56.17 with vesting 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. We recorded compensation expense for Liability Awards of $14.6 million in first nine months 2016 compared to $16.1 million in the same period of 2015. 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, 2016: Equity Awards Liability Awards Shares Weighted Shares Weighted Outstanding at December 31, 2015 436,764 $ 59.74 308,737 $ 65.80 Granted 940,491 28.18 513,535 36.02 Vested (401,259 ) 44.25 (284,647 ) 52.59 Forfeited (117,304 ) 42.66 (49,519 ) 40.33 Outstanding at September 30, 2016 858,692 $ 34.75 488,106 $ 44.76 Stock Appreciation Right Awards There were 1.0 million SARs outstanding at September 30, 2016. Information with respect to SARs activity in the nine months ended September 30, 2016 is summarized below: Shares Weighted Outstanding at December 31, 2015 1,510,977 $ 63.73 Exercised — — Expired/forfeited (507,377 ) 53.16 Outstanding at September 30, 2016 1,003,600 $ 69.08 Deferred Compensation Plan Our deferred compensation plan gives non-employee directors and officers the ability to defer all or a portion of their salaries, bonuses or director fees and invest in Range common stock or make other investments at the individual’s discretion. Range provides a partial matching contribution to officers 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. We recorded mark-to-market gain of $11.6 million in third quarter 2016 compared to mark-to-market gain of $43.7 million in third quarter 2015. We recorded a mark-to-market loss of $30.2 million in first nine months 2016 compared to a gain of $56.6 million in first nine months 2015. The Rabbi Trust held 2.8 million shares (2.3 million of which were vested) of Range stock at September 30, 2016 compared to 2.8 million shares (2.5 million of which were vested) at December 31, 2015.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2016
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	(14) SUPPLEMENTAL CASH FLOW INFORMATION Nine Months Ended 2016 2015 (in thousands) Net cash provided from operating activities included: Income taxes (refunded) paid to taxing authorities $ (101 ) $ 100 Interest paid 134,583 128,132 Non-cash investing and financing activities included: Increase in asset retirement costs capitalized 4,655 19,862 Increase (decrease) in accrued capital expenditures 12,523 (195,472 )

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
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 2016, our transportation and gathering commitments increased by approximately $2.8 billion over the next fifteen years primarily due to firm transportation contracts for both ethane and propane in connection with the start-up of the Mariner East pipeline, other pricing changes to current contracts and the Memorial Merger. As of September 30, 2016, the increase to future minimum transportation and gathering fees is as follows (in thousands): Transportation and Gathering Contracts 2016 $ 60,522 2017 263,118 2018 263,734 2019 264,293 2020 214,487 Thereafter 1,774,351 $ 2,840,505 Delivery Commitments In first nine months 2016, 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 1,500 to 50,560 Mmbtu per day of natural gas and the commitments are between one and five years and began as early as second quarter 2016. In first nine months 2016, in connection with the startup of Mariner East, we have contracted to deliver ethane production volumes from our Marcellus Shale wells of 20,000 bbls per day for 15 years.

Office Closing and Termination

Office Closing and Termination Costs	9 Months Ended
	Sep. 30, 2016
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 2015 for severance and other personnel costs of $275,000, additional accelerated vesting of stock-based compensation of $608,000 and $3.2 million of building lease costs. There are no office closing or termination costs associated with the Memorial Merger. The following summarizes our termination costs for the nine months ended September 30, 2016 and 2015 (in thousands): Nine Months Ended September 30, 2016 2015 Termination costs $ — $ 1,414 Building lease 303 3,156 Stock-based compensation — 1,720 Total termination costs $ 303 $ 6,290 The following details our accrued liability as of September 30, 2016 (in thousands): September 30, 2016 Beginning balance at December 31, 2015 $ 11,630 Accrued building rent 303 Payments (8,858 ) Ending balance at September 30, 2016 $ 3,075

Capitalized Costs and Accumulat

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	(17) Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (a) September 30, December 31, (in thousands) Natural gas and oil properties: Properties subject to depletion $ 9,263,853 $ 8,047,181 Unproved properties 2,936,529 949,155 Total 12,200,382 8,996,336 Accumulated depreciation, depletion and amortization (2,994,282 ) (2,635,031 ) Net capitalized costs $ 9,206,100 $ 6,361,305 (a) Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property Acq

Costs Incurred for Property Acquisition, Exploration and Development	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
Costs Incurred for Property Acquisition, Exploration and Development	(18) Costs Incurred for Property Acquisition, Exploration and Development (a) Nine Months 2016 Year Ended (in thousands) Acquisitions: Acreage purchases $ 16,282 $ 73,025 Oil and gas properties 3,086,635 — Asset retirement obligations 16,609 — Development 302,518 708,268 Exploration: Drilling 37,528 87,505 Expense 16,972 18,421 Stock-based compensation expense 1,669 2,985 Gas gathering facilities: Development 1,345 13,337 Subtotal 3,479,558 903,541 Asset retirement obligations 4,655 22,184 Total costs incurred $ 3,484,213 $ 925,725 (a) Includes costs incurred whether capitalized or expensed.

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	9 Months Ended
	Sep. 30, 2016
Business Combinations [Abstract]
Summary of Preliminary Purchase Price Allocation	The following table sets forth our preliminary purchase price allocation (in thousands, except shares and stock price): Purchase price: Shares of Range common stock issued to Memorial stockholders 77,042,749 Range common stock price per share on September 15, 2016 (close) $ 39.37 Total purchase price $ 3,033,173 Plus fair value of liabilities assumed by Range: Accounts payable 54,905 Other current liabilities 96,734 Long-term debt 1,204,449 Deferred taxes 583,575 Other long-term liabilities 19,169 Total purchase price plus liabilities assumed $ 4,992,005 Fair value of Memorial assets: Cash and equivalents $ 7,180 Other current assets 93,911 Derivative instruments 152,994 Oil and gas properties: Proved property 1,096,035 Unproved property 2,007,200 Other property and equipment 3,579 Goodwill (a) 1,630,981 Other 125 Total asset value $ 4,992,005 (a)
Summary of Pro Forma Financial Information	The pro forma condensed combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have actually occurred had the Memorial Merger taken place on January 1, 2015. In addition, the pro forma financial information below is not intended to be a projection of future results (in thousands, except per share amounts). Three Months Ended September 30, Nine Months Ended September 30, 2016 2015 2016 2015 Revenues $ 521,668 $ 716,753 $ 1,080,767 $ 1,667,516 Net loss $ (17,882 ) $ (223,154 ) $ (427,946 ) $ (268,433 ) Loss per share: Basic $ (0.07 ) $ (0.92 ) $ (1.75 ) $ (1.10 ) Diluted $ (0.07 ) $ (0.92 ) $ (1.75 ) $ (1.10 )

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Tax Benefit	Income tax benefit was as follows (in thousands): Three Months Ended Nine Months Ended September 30, 2016 2015 2016 2015 Income tax benefit $ (13,705 ) $ (134,781 ) $ (187,231 ) $ (174,390 ) Effective tax rate 24.6 % 30.9 % 34.3 % 30.8 %

Loss Per Common Share (Tables)

Loss Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Computations of Basic and Diluted Loss 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 shareholders 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, 2016 2015 2016 2015 Net loss, as reported $ (41,971 ) $ (300,948 ) $ (358,617 ) $ (391,858 ) Participating earnings (a) (56 ) (114 ) (167 ) (338 ) Basic net loss attributed to common (42,027 ) (301,062 ) (358,784 ) (392,196 ) Reallocation of participating earnings (a) — — — — Diluted net loss attributed to common shareholders $ (42,027 ) $ (301,062 ) $ (358,784 ) $ (392,196 ) Net loss per common share: Basic $ (0.23 ) $ (1.81 ) $ (2.09 ) $ (2.36 ) Diluted $ (0.23 ) $ (1.81 ) $ (2.09 ) $ (2.36 ) (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.
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 Nine Months Ended 2016 2015 2016 2015 Weighted average common shares outstanding – basic (1) 180,683 166,517 171,571 166,327 Effect of dilutive securities: Director and employee SARs — — — — Weighted average common shares outstanding – diluted 180,683 166,517 171,571 166,327 (1)

Suspended Exploratory Well Co27

Suspended Exploratory Well Costs (Tables)	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
Suspended Exploratory Well Costs	The following table reflects the change in capitalized exploratory well costs for the nine months ended September 30, 2016 and the year ended December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Balance at beginning of period $ 4,161 $ 2,996 Additions to capitalized exploratory well costs pending the determination of proved reserves 1,684 1,165 Reclassifications to wells, facilities and equipment based on determination of proved reserves (5,845 ) — Divested wells — — Balance at end of period — 4,161 Less exploratory well costs that have been capitalized for a period of one year or less — (1,165 ) Capitalized exploratory well costs that have been capitalized for a period greater than one year $ — $ 2,996 Number of projects that have exploration well costs that have been capitalized greater than one year — 1

Indebtedness (Tables)

Indebtedness (Tables)	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Debt Outstanding	We had the following debt outstanding as of the dates shown below (bank debt interest rate at September 30, 2016 is shown parenthetically) (in thousands). No interest was capitalized during the three or nine months ended September 30, 2016 or the year ended December 31, 2015. September 30, 2016 December 31, 2015 Bank debt (2.0%) (a) $ 937,000 $ 95,000 Senior notes: 4.875% senior notes due 2025 750,000 750,000 5.00% senior notes due 2023 741,514 — 5.00% senior notes due 2022 580,032 — 5.875% senior notes due 2022 (b) 329,244 — 5.75% senior notes due 2021 475,952 — Other senior notes due 2022 (c) 1,090 — Total senior notes 2,877,832 750,000 Senior subordinated notes: 5.00% senior subordinated notes due 2023 7,712 750,000 5.00% senior subordinated notes due 2022 19,054 600,000 5.75% senior subordinated notes due 2021 22,214 500,000 Total senior subordinated notes 48,980 1,850,000 Total debt 3,863,812 2,695,000 Unamortized premium 7,552 — Unamortized debt issuance costs (44,655 ) (43,697 ) Total debt net of debt issuance costs $ 3,826,709 $ 2,651,303 (a) (b) (c)
Summary of Debt Exchange Offer to Exchange Validly Tendered and Accepted Range Senior Subordinated Notes	On September 16, 2016, we also completed our debt exchange offer to exchange all validly tendered and accepted Range senior subordinated notes as detailed below (in thousands): Existing Note New Note Principal Amount of Existing Notes Validly Tendered Approximate Percentage Validly Tendered 5.00% senior subordinated notes due 2023 5.00% senior notes due 2023 $742,291 99.0% 5.00% senior subordinated notes due 2022 5.00% senior notes due 2022 $580,946 96.8% 5.75% senior subordinated notes due 2021 5.75% senior notes due 2021 $477,786 95.6%

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	A reconciliation of our liability for plugging and abandonment costs for the nine months ended September 30, 2016 is as follows (in thousands): Nine Months 2016 Beginning of period $ 264,137 Acquisition of wells 16,600 Liabilities incurred 1,516 Liabilities settled (8,153 ) Disposition of wells (4,731 ) Accretion expense 12,231 Change in estimate 3,139 End of period 284,739 Less current portion (15,071 ) Long-term asset retirement obligations $ 269,668

Capital Stock (Tables)

Capital Stock (Tables)	9 Months Ended
	Sep. 30, 2016
Equity [Abstract]
Capital Stock	The following is a schedule of changes in the number of common shares outstanding since the beginning of 2015: Nine Months Year Beginning balance 169,316,460 168,628,177 Memorial Merger 77,042,749 — SARs exercised — 77,002 Restricted stock grants 464,428 335,103 Restricted stock units vested 263,047 252,507 Shares retired (739 ) — Treasury shares issued 14,511 23,671 Ending balance 247,100,456 169,316,460

Derivative Activities (Tables)

Derivative Activities (Tables)	9 Months Ended
	Sep. 30, 2016
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, 2016, excluding our basis and freight swaps which are discussed separately below: Period Contract Type Volume Hedged Weighted Natural Gas 2016 Swaps (1) 901,739 Mmbtu/day $ 3.32 2017 Swaps (1) 478,192 Mmbtu/day $ 3.14 2018 Swaps 70,000 Mmbtu/day $ 2.92 2016 Collar (1) 32,609 Mmbtu/day $ 4.00-$ 4.71 2017 Collar (1) 34,521 Mmbtu/day $ 4.00-$ 5.06 2016 Purchased Put (1) 218,478 Mmbtu/day $ 3.54 (2) 2017 Purchased Put (1) 175,890 Mmbtu/day $ 3.48 (3) Crude Oil 2016 Swaps (1) 8,640 bbls/day $ 69.49 2017 Swaps (1) 5,416 bbls/day $ 57.18 2018 Swaps 500 bbls/day $ 54.25 2016 Collar (1) 848 bbls/day $ 80.00-$ 99.70 NGLs (C2-Ethane) 2016 Swaps (1) 5,839 bbls/day $ 0.46/gallon 2017 Swaps 3,000 bbls/day $ 0.27/gallon NGLs (C3-Propane) 2016 Swaps (1) 11,142 bbls/day $ 0.75/gallon 2017 Swaps 6,966 bbls/day $ 0.52/gallon NGLs (iC4-isobutane) 2016 Swaps (1) 1,969 bbls/day $ 1.21/gallon NGLs (NC4-Normal Butane) 2016 Swaps (1) 6,071 bbls/day $ 0.72/gallon 2017 Swaps 1,500 bbls/day $ 0.65/gallon NGLs (C5-Natural Gasoline) 2016 Swaps (1) 8,142 bbls/day $ 1.36/gallon 2017 Swaps 2,000 bbls/day $ 0.98/gallon (1) (2 ) (3)
Combined Fair Value of Derivatives, by Consolidated Balance Sheets	The combined fair value of derivatives included in the accompanying consolidated balance sheets as of September 30, 2016 and December 31, 2015 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, 2016 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 $ 68,069 $ (24,934 ) $ 43,135 –basis swaps 15,066 (1,191 ) 13,875 –collars 15,086 — 15,086 –puts 50,792 (145 ) 50,647 Crude oil –swaps 29,696 (1,292 ) 28,404 –collars 2,416 — 2,416 NGLs –C2 ethane swaps 6,332 (185 ) 6,147 –C3 propane swaps 8,535 (3,719 ) 4,816 –C3 propane spread swaps 12,585 (8,506 ) 4,079 –NC4 butane swaps 1,282 (371 ) 911 –iC4 isobutane swaps 3,557 — 3,557 –C5 natural gasoline swaps 9,722 (2,820 ) 6,902 Freight –swaps 2 (157 ) (155 ) $ 223,140 $ (43,320 ) $ 179,820 September 30, 2016 Gross Amounts of Recognized (Liabilities) Gross Amounts Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (31,557 ) $ 24,934 $ (6,623 ) –basis swaps (1,278 ) 1,191 (87 ) –puts — 145 145 Crude oil –swaps (2,456 ) 1,292 (1,164 ) NGLs –C2 ethane swaps (185 ) 185 — –C3 propane swaps (3,538 ) 3,719 181 –C3 propane spread swaps (8,506 ) 8,506 — –NC4 butane swaps (2,407 ) 371 (2,036 ) –C5 natural gasoline swaps (4,447 ) 2,820 (1,627 ) Freight –swaps (157 ) 157 — $ (54,531 ) $ 43,320 $ (11,211 ) December 31, 2015 Gross Amounts of Assets Gross Amounts Net Amounts of Derivative assets: Natural gas –swaps $ 219,357 $ (10,245 ) $ 209,112 –basis swaps 8,251 (2,765 ) 5,486 Crude oil –swaps 38,699 — 38,699 NGLs –C3 propane swaps 15,884 — 15,884 –C3 propane spread swaps 2,497 (2,497 ) — –NC4 butane swaps 6,968 — 6,968 –C5 natural gasoline swaps 12,694 (81 ) 12,613 $ 304,350 $ (15,588 ) $ 288,762 December 31, 2015 Gross Amounts of (Liabilities) Gross Amounts Net Amounts of Derivative (liabilities): Natural gas –swaps $ (10,245 ) $ 10,245 $ — –basis swaps (2,786 ) 2,765 (21 ) NGLs –C3 propane spread swap (3,633 ) 2,497 (1,136 ) –C5 natural gasoline swaps (81 ) 81 — $ (16,745 ) $ 15,588 $ (1,157 )
Effects of Derivatives on Consolidated Statements of Operations	The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands): Three Months Ended September 30, Derivative Fair Value Income (Loss) 2016 2015 Commodity swaps $ 38,662 $ 198,245 Re-purchased swaps — 1,683 Collars 1,320 5,626 Puts 2,842 — Basis swaps 21,853 (3,550 ) Freight swaps (121 ) — Total $ 64,556 $ 202,004 \ Nine Months Ended September 30, Derivative Fair Value Income (Loss) 2016 2015 Commodity swaps $ (40,270 ) $ 281,921 Re-purchased swaps — 1,683 Collars 1,320 12,391 Puts 2,842 — Basis swaps 24,929 (5,943 ) Freight swaps (155 ) — Total $ (11,334 ) $ 290,052

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value	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, 2016 using: Quoted Prices Significant Significant Total Trading securities held in the deferred compensation plans $ 60,955 $ — $ — $ 60,955 Derivatives – — 82,603 — 82,603 –collars — 17,502 — 17,502 –puts — 50,792 — 50,792 –basis swaps — 17,867 — 17,867 –freight swaps — (155 ) — (155 ) Fair Value Measurements at December 31, 2015 using: Quoted Prices Significant Significant Total Trading securities held in the deferred compensation plans $ 62,376 $ — $ — $ 62,376 Derivatives – — 283,276 — 283,276 –basis swaps — 4,329 — 4,329
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, 2016 2015 2016 2015 Fair Value Impairment Fair Value Impairment Fair Value Impairment Fair Value Impairment Natural gas and oil properties $ — $ — $ 98,872 $ 502,233 $ 90,150 $ 43,040 $ 98,872 $ 502,233
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, 2016 and December 31, 2015 (in thousands): September 30, 2016 December 31, 2015 Carrying Fair Carrying Fair Assets: Commodity swaps, options and basis swaps $ 179,820 $ 179,820 $ 288,762 $ 288,762 Marketable securities (a) 60,955 60,955 62,376 62,376 (Liabilities): Commodity swaps, options and basis swaps (11,211 ) (11,211 ) (1,157 ) (1,157 ) Bank credit facility (b) (937,000 ) (937,000 ) (95,000 ) (95,000 ) Deferred compensation plan (c) (148,829 ) (148,829 ) (122,918 ) (122,918 ) 5.75% senior notes due 2021 (b) (475,952 ) (482,496 ) — — 5.00% senior notes due 2022 (b) (580,032 ) (577,132 ) — — 5.875% senior notes due 2022 (b) (329,244 ) (332,536 ) — — Other senior notes due 2022 (b) (1,090 ) (1,091 ) — — 5.00% senior notes due 2023 (b) (741,514 ) (723,903 ) — — 4.875% senior notes due 2025 (b) (750,000 ) (721,875 ) (750,000 ) (572,813 ) 5.75% senior subordinated notes due 2021 (b) (22,214 ) (22,408 ) (500,000 ) (396,250 ) 5.00% senior subordinated notes due 2022 (b) (19,054 ) (18,506 ) (600,000 ) (447,000 ) 5.00% senior subordinated notes due 2023 (b) (7,712 ) (7,490 ) (750,000 ) (551,250 ) (a) Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges. (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. (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

Stock-Based Compensation Plans (Tables)	9 Months Ended
	Sep. 30, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
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 Nine Months Ended 2016 2015 2016 2015 Direct operating expense $ 497 $ 609 $ 1,781 $ 2,149 Brokered natural gas and marketing expense 455 618 1,349 1,743 Exploration expense 608 688 1,669 2,171 General and administrative expense 11,126 11,512 37,682 38,545 Termination costs — (1 ) — 1,720 Total stock-based compensation $ 12,686 $ 13,426 $ 42,481 $ 46,328
Summary of Performance Share Unit Awards Activities	The following is a summary of our non-vested PSU awards outstanding at September 30, 2016: Units Weighted Outstanding at December 31, 2015 262,124 $ 64.77 Units granted (a) 413,959 36.64 Units vested (175,306 ) 53.01 Units forfeited (42,603 ) 46.09 Outstanding at September 30, 2016 458,174 $ 45.60 (a)
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 2016 and 2015: Nine Months Ended September 30, 2016 2015 Risk-free interest rate 0.94 % 1.0 % Expected annual volatility 49 % 33 % Weighted average grant date fair value per unit $ 36.64 $ 56.78
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, 2016: Equity Awards Liability Awards Shares Weighted Shares Weighted Outstanding at December 31, 2015 436,764 $ 59.74 308,737 $ 65.80 Granted 940,491 28.18 513,535 36.02 Vested (401,259 ) 44.25 (284,647 ) 52.59 Forfeited (117,304 ) 42.66 (49,519 ) 40.33 Outstanding at September 30, 2016 858,692 $ 34.75 488,106 $ 44.76
Stock Option and SARs Activities	Information with respect to SARs activity in the nine months ended September 30, 2016 is summarized below: Shares Weighted Outstanding at December 31, 2015 1,510,977 $ 63.73 Exercised — — Expired/forfeited (507,377 ) 53.16 Outstanding at September 30, 2016 1,003,600 $ 69.08

Supplemental Cash Flow Inform34

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2016
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Nine Months Ended 2016 2015 (in thousands) Net cash provided from operating activities included: Income taxes (refunded) paid to taxing authorities $ (101 ) $ 100 Interest paid 134,583 128,132 Non-cash investing and financing activities included: Increase in asset retirement costs capitalized 4,655 19,862 Increase (decrease) in accrued capital expenditures 12,523 (195,472 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments And Contingencies Disclosure [Abstract]
Schedule of Increase to Future Minimum Transportation and Gathering Fees	As of September 30, 2016, the increase to future minimum transportation and gathering fees is as follows (in thousands): Transportation and Gathering Contracts 2016 $ 60,522 2017 263,118 2018 263,734 2019 264,293 2020 214,487 Thereafter 1,774,351 $ 2,840,505

Office Closing and Terminatio36

Office Closing and Termination Costs (Tables)	9 Months Ended
	Sep. 30, 2016
Restructuring And Related Activities [Abstract]
Summary of Termination Costs	The following summarizes our termination costs for the nine months ended September 30, 2016 and 2015 (in thousands): Nine Months Ended September 30, 2016 2015 Termination costs $ — $ 1,414 Building lease 303 3,156 Stock-based compensation — 1,720 Total termination costs $ 303 $ 6,290
Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet	The following details our accrued liability as of September 30, 2016 (in thousands): September 30, 2016 Beginning balance at December 31, 2015 $ 11,630 Accrued building rent 303 Payments (8,858 ) Ending balance at September 30, 2016 $ 3,075

Capitalized Costs and Accumul37

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Tables)	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	September 30, December 31, (in thousands) Natural gas and oil properties: Properties subject to depletion $ 9,263,853 $ 8,047,181 Unproved properties 2,936,529 949,155 Total 12,200,382 8,996,336 Accumulated depreciation, depletion and amortization (2,994,282 ) (2,635,031 ) Net capitalized costs $ 9,206,100 $ 6,361,305 (a) Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property A38

Costs Incurred for Property Acquisition, Exploration and Development (Tables)	9 Months Ended
	Sep. 30, 2016
Extractive Industries [Abstract]
Costs Incurred for Property Acquisition, Exploration and Development	Nine Months 2016 Year Ended (in thousands) Acquisitions: Acreage purchases $ 16,282 $ 73,025 Oil and gas properties 3,086,635 — Asset retirement obligations 16,609 — Development 302,518 708,268 Exploration: Drilling 37,528 87,505 Expense 16,972 18,421 Stock-based compensation expense 1,669 2,985 Gas gathering facilities: Development 1,345 13,337 Subtotal 3,479,558 903,541 Asset retirement obligations 4,655 22,184 Total costs incurred $ 3,484,213 $ 925,725 (a) Includes costs incurred whether capitalized or expensed.

Basis of Presentation - Merger

Basis of Presentation - Merger - Additional Information (Detail) $ in Thousands		Sep. 16, 2016USD ($)shares	Sep. 30, 2016USD ($)
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Goodwill			$ 1,630,981
Memorial
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Common stock issued in connection with exchange of outstanding shares | shares		77,042,749
Exchange ratio of common shares for acquired company		0.375
Goodwill	[1]	$ 1,630,981
[1]	Goodwill will not be deductible for income tax purposes.

Basis of Presentation - Invento

Basis of Presentation - Inventory - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory [Line Items]
Inventory and other	$ 36,445	$ 33,217
Materials and supplies inventory
Inventory [Line Items]
Inventory and other	13,600	20,800
Commodity inventory
Inventory [Line Items]
Inventory and other	$ 13,600	$ 4,800

Acquisitions and Dispositions -

Acquisitions and Dispositions - Acquisitions - Additional Information (Detail) $ in Thousands	Sep. 16, 2016USD ($)shares	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)
Business Acquisition [Line Items]
Merger-related costs			$ 33,791	$ 0	$ 36,412	$ 0
Memorial
Business Acquisition [Line Items]
Business merger date					Sep. 16, 2016
Common stock issued in connection with exchange of outstanding shares | shares	77,042,749
Exchange ratio of common shares for acquired company	0.375
Fair value of outstanding debt	$ 1,204,449
Merger-related costs	$ 36,412
Revenues		$ 21,100
Net operating income		$ 12,300
Merger related costs incurred by Memorial excluded from ProForma			$ 9,300		$ 9,300

Acquisitions and Dispositions42

Acquisitions and Dispositions - Summary of Preliminary Purchase Price Allocation (Details) - USD ($) $ / shares in Units, $ in Thousands		Sep. 16, 2016	Sep. 30, 2016	Sep. 15, 2016
Oil and gas properties:
Goodwill			$ 1,630,981
Memorial
Purchase price:
Shares of Range common stock issued to Memorial stockholders		77,042,749
Range common stock price per share on September 15, 2016 (close)				$ 39.37
Total purchase price		$ 3,033,173
Plus fair value of liabilities assumed by Range:
Accounts payable		54,905
Other current liabilities		96,734
Long-term debt		1,204,449
Deferred taxes		583,575
Other long-term liabilities		19,169
Total purchase price plus liabilities assumed		4,992,005
Fair value of Memorial assets:
Cash and equivalents		7,180
Other current assets		93,911
Derivative instruments		152,994
Oil and gas properties:
Proved property		1,096,035
Unproved property		2,007,200
Other property and equipment		3,579
Goodwill	[1]	1,630,981
Other		125
Total asset value		$ 4,992,005
[1]	Goodwill will not be deductible for income tax purposes.

Acquisitions and Dispositions43

Acquisitions and Dispositions - Summary of Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Combinations [Abstract]
Revenues	$ 521,668	$ 716,753	$ 1,080,767	$ 1,667,516
Net loss	$ (17,882)	$ (223,154)	$ (427,946)	$ (268,433)
Loss per share:
Basic	$ (0.07)	$ (0.92)	$ (1.75)	$ (1.10)
Diluted	$ (0.07)	$ (0.92)	$ (1.75)	$ (1.10)

Acquisitions and Dispositions44

Acquisitions and Dispositions - Dispositions - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended		9 Months Ended
	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	$ (2,597,000)		$ (681,000)			$ (7,544,000)	$ 2,053,000
Western Oklahoma Properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	(2,600,000)			$ (6,200,000)
Proceeds from sale of oil and gas properties	900,000			77,700,000
Northeast Pennsylvania Non-operated Interest
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets		$ (2,100,000)
Proceeds from sale of oil and gas properties		$ 111,500,000
Miscellaneous Proved, Unproved Properties and Surface Acreage
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	30,000		(681,000)	(198,000)	$ 2,700,000
Proceeds from sale of oil and gas properties	$ 131,000		$ 524,000	1,700,000	14,300,000
Mississippi and South Texas properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas properties				$ 1,200,000
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 properties					$ 10,500,000

Income Taxes - Income Tax Benef

Income Taxes - Income Tax Benefit (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax benefit	$ (13,705)	$ (134,781)	$ (187,231)	$ (174,390)
Effective tax rate	24.60%	30.90%	34.30%	30.80%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Taxes [Line Items]
Federal statutory rate	35.00%	35.00%	35.00%	35.00%
Income tax (benefit) expense	$ (13,705,000)	$ (134,781,000)	$ (187,231,000)	$ (174,390,000)
Memorial Business Combination Non Deductible Transaction Costs
Income Taxes [Line Items]
Income tax (benefit) expense	5,300,000
Equity Compensation
Income Taxes [Line Items]
Income tax (benefit) expense			3,700,000
Deferred compensation plan
Income Taxes [Line Items]
Income tax (benefit) expense	(682,000)	(2,600,000)	1,800,000	(3,500,000)
Valuation Allowance, Operating Loss Carryforwards | State
Income Taxes [Line Items]
Income tax (benefit) expense	$ 2,800,000	$ 8,500,000	$ 10,500,000	$ 19,800,000

Loss Per Common Share - Computa

Loss Per Common Share - Computations of Basic and Diluted Loss Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share Reconciliation [Abstract]
Net loss, as reported		$ (41,971)	$ (300,948)	$ (358,617)	$ (391,858)
Participating earnings	[1]	(56)	(114)	(167)	(338)
Basic net loss attributed to common shareholders		(42,027)	(301,062)	(358,784)	(392,196)
Reallocation of participating earnings	[1]	0	0	0	0
Diluted net loss attributed to common shareholders		$ (42,027)	$ (301,062)	$ (358,784)	$ (392,196)
Net loss per common share:
Basic		$ (0.23)	$ (1.81)	$ (2.09)	$ (2.36)
Diluted		$ (0.23)	$ (1.81)	$ (2.09)	$ (2.36)
[1]	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.

Loss Per Common Share - Basic W

Loss 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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Weighted average common shares outstanding ? basic	[1]	180,683	166,517	171,571	166,327
Effect of dilutive securities:
Director and employee SARs		0	0	0	0
Weighted average common shares outstanding – diluted		180,683	166,517	171,571	166,327
[1]	Includes common stock issued in connection with the exchange of 77.0 million shares for all outstanding Memorial common stock on September 16, 2016.

Loss Per Common Share - Basic49

Loss Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Parenthetical) (Detail)	Sep. 16, 2016shares
Memorial
Earnings Per Share Basic [Line Items]
Common stock issued in connection with exchange of outstanding shares	77,042,749

Loss Per Common Share - Additio

Loss Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	2.8	2.8	2.8	2.8

Suspended Exploratory Well Co51

Suspended Exploratory Well Costs - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Extractive Industries [Abstract]
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$ 0	$ 2,996

Suspended Exploratory Well Co52

Suspended Exploratory Well Costs - Suspended Exploratory Well Costs (Detail) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)	Dec. 31, 2015USD ($)Project
Extractive Industries [Abstract]
Balance at beginning of period	$ 4,161	$ 2,996
Additions to capitalized exploratory well costs pending the determination of proved reserves	1,684	1,165
Reclassifications to wells, facilities and equipment based on determination of proved reserves	(5,845)
Balance at end of period		4,161
Less exploratory well costs that have been capitalized for a period of one year or less		(1,165)
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$ 0	$ 2,996
Number of projects that have exploration well costs that have been capitalized greater than one year | Project		1

Indebtedness - Additional Infor

Indebtedness - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Interest capitalized during the period	$ 0	$ 0	$ 0

Indebtedness - Debt Outstanding

Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015	May 31, 2015
Debt Instrument [Line Items]
Bank debt		$ 930,669	$ 86,427
Senior notes		2,877,832	750,000
Senior subordinated notes		48,980	1,850,000
Total debt		3,863,812	2,695,000
Unamortized premium		7,552
Unamortized debt issuance costs		(44,655)	(43,697)
Total debt net of debt issuance costs		3,826,709	2,651,303
2.0% Bank Debt | Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt	[1]	937,000	95,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Senior notes		750,000	750,000	$ 750,000
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes		741,514
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes		580,032
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	[2]	329,244
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior notes		475,952
Other Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	[3]	1,090
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Senior subordinated notes		7,712	750,000
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Senior subordinated notes		19,054	600,000
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Senior subordinated notes		$ 22,214	$ 500,000
[1]	As of September 16, 2016, we repaid the $597.0 million balance outstanding on the Memorial credit facility with funds borrowed under the Range credit facility and terminated the Memorial credit facility.
[2]	Represents senior notes assumed in the Memorial Merger that were not purchased for cash and were exchanged for Range 5.875% senior notes due 2022. See Senior Note Exchange below.
[3]	Represents the remaining Memorial 5.875% senior notes assumed in the Memorial Merger that were not purchased for cash or exchanged for Range 5.875% senior notes due 2022. See Senior Note Exchange below.

Indebtedness - Debt Outstandi55

Indebtedness - Debt Outstanding (Parenthetical) (Detail) - USD ($) $ in Thousands	Sep. 16, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	May 31, 2015
Debt Instrument [Line Items]
Balance outstanding repaid to terminate debt		$ 1,045,000	$ 1,676,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate on notes		4.875%		4.875%	4.875%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		5.875%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%		5.00%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%		5.00%
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%		5.75%
Other Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		5.875%
Notes Payable to Banks | 2.0% Bank Debt
Debt Instrument [Line Items]
Bank debt percentage		2.00%		2.00%
Memorial
Debt Instrument [Line Items]
Balance outstanding repaid to terminate debt	$ 597,000	$ 597,000	$ 0

Indebtedness - Bank Debt - Addi

Indebtedness - Bank Debt - Additional Information (Detail) - Bank Credit Facility	3 Months Ended		9 Months Ended
	Sep. 30, 2016USD ($)CommercialBank	Sep. 30, 2015	Sep. 30, 2016USD ($)CommercialBank	Sep. 30, 2015	Mar. 17, 2016USD ($)
Debt Instrument [Line Items]
Bank Credit facility, maximum amount	$ 4,000,000,000		$ 4,000,000,000
Bank Credit facility, borrowing base					$ 3,000,000,000
Bank commitments					$ 2,000,000,000
Percentage holding of commercial banks, Maximum	5.80%		5.80%
Number of commercial banks included in current bank group | CommercialBank	29		29
Maturity date of loan			Oct. 16, 2019
Bank debt	$ 937,000,000		$ 937,000,000
Undrawn letters of credit	253,900,000		253,900,000
Borrowing capacity available under the commitment amount	$ 809,100,000		$ 809,100,000
Weighted average interest rate on the bank credit facility	2.30%	1.70%	2.30%	1.70%
Annual rate of commitment fee paid on the undrawn balance			0.30%
Alternate Base Rate
Debt Instrument [Line Items]
Interest rate margin			0.50%
LIBOR Rate
Debt Instrument [Line Items]
Interest rate margin			1.50%
Minimum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Minimum | Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.15%
Minimum | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	0.25%		0.25%
Minimum | Alternate Base Rate | Credit Facility
Debt Instrument [Line Items]
Base rate on debt	0.125%		0.125%
Minimum | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Minimum | LIBOR Rate | Credit Facility
Debt Instrument [Line Items]
Base rate on debt	1.125%		1.125%
Maximum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.375%
Maximum | Credit Facility
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Maximum | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Maximum | Alternate Base Rate | Credit Facility
Debt Instrument [Line Items]
Base rate on debt	0.75%		0.75%
Maximum | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	2.25%		2.25%
Maximum | LIBOR Rate | Credit Facility
Debt Instrument [Line Items]
Base rate on debt	1.75%		1.75%

Indebtedness - Senior Notes - A

Indebtedness - Senior Notes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2015	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Aggregate principal amount		$ 2,877,832	$ 750,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Aggregate principal amount	$ 750,000	$ 750,000	$ 750,000
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
Maximum redemption price of notes as percentage of principal amount	101.00%

Indebtedness - Senior Note Exch

Indebtedness - Senior Note Exchange and Cash Tender Offer - Additional Information (Detail) - USD ($) $ in Millions	Sep. 16, 2016	Sep. 30, 2016	Sep. 30, 2013
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		5.875%
5.875% Senior Notes Due 2022 | Senior Note Cash Tender Offer
Debt Instrument [Line Items]
Early cash tender premium paid	$ 3.3
5.875% Senior Notes Due 2022 | Senior Note Cash Tender Offer | Memorial
Debt Instrument [Line Items]
Percentage of outstanding notes purchased	44.90%
Principal amount purchased	$ 269.7
Senior Notes
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount		101.00%
Senior Notes | Senior Note Exchange Offer | Memorial
Debt Instrument [Line Items]
Percentage of outstanding notes exchanged	54.90%
Unsecured Debt | 5.875% Senior Notes Due 2022 | Senior Note Exchange Offer
Debt Instrument [Line Items]
Senior notes exchange amount	$ 329.2
Interest rate on notes	5.875%
Maturity date of loan			Jul. 1, 2022
Maximum redemption price of notes as percentage of principal amount		100.00%
Deferred financing costs	$ 6.3
Early cash tender premium paid	$ 4.1

Indebtedness - Summary of Debt

Indebtedness - Summary of Debt Exchange Offer to Exchange All Validly Tendered and Accepted Range Senior Subordinated Notes (Detail) $ in Thousands	Sep. 16, 2016USD ($)
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Principal Amount of Existing Notes Validly Tendered	$ 742,291
Approximate Percentage Validly Tendered	99.00%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Principal Amount of Existing Notes Validly Tendered	$ 580,946
Approximate Percentage Validly Tendered	96.80%
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Principal Amount of Existing Notes Validly Tendered	$ 477,786
Approximate Percentage Validly Tendered	95.60%

Indebtedness - Summary of Deb60

Indebtedness - Summary of Debt Exchange Offer to Exchange All Validly Tendered and Accepted Range Senior Subordinated Notes (Parenthetical) (Detail)	Sep. 30, 2016	Sep. 16, 2016	Dec. 31, 2015
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%

Indebtedness - Senior Subordina

Indebtedness - Senior Subordinated Note Exchange- Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 16, 2016
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
Maturity date of loan		Mar. 15, 2023
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
Maturity date of loan		Aug. 15, 2022
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%
Maturity date of loan		Jun. 1, 2021
Senior Notes
Debt Instrument [Line Items]
Interest expense on debt	$ 6.6
Premium recorded in connection with debt exchange		$ 3.5
Percentage of premium received on face amount tendered in exchange of debt		95.00%
Maximum redemption price of notes as percentage of principal amount		101.00%

Indebtedness - Senior Subordi62

Indebtedness - Senior Subordinated Notes - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016
Subordinated Debt
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount	101.00%

Indebtedness - Guarantees and D

Indebtedness - Guarantees and Debt Covenants - Additional Information (Detail) - Bank Credit Facility	9 Months Ended
	Sep. 30, 2016
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 bank credit facility agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the bank credit facility 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, 2016.
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 - Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Asset Retirement Obligation [Abstract]
Beginning of period	$ 264,137
Acquisition of wells	16,600
Liabilities incurred	1,516
Liabilities settled	(8,153)
Disposition of wells	(4,731)
Accretion expense	12,231
Change in estimate	3,139
End of period	284,739
Less current portion	(15,071)	$ (15,071)
Long-term asset retirement obligations	$ 269,668

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - shares	Sep. 30, 2016	Dec. 31, 2015
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)

Capital Stock (Detail) - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Class Of Stock [Line Items]
Beginning balance	169,316,460	168,628,177
SARs exercised	0	77,002
Restricted stock grants	464,428	335,103
Restricted stock units vested	263,047	252,507
Shares retired	(739)
Treasury shares issued	14,511	23,671
Ending balance	247,100,456	169,316,460
Memorial
Class Of Stock [Line Items]
Memorial Merger	77,042,749	0

Derivative Activities - Additio

Derivative Activities - Additional Information (Detail)	Sep. 30, 2016USD ($)MMBTU / dt_per_MMMBTUbbl
Derivatives Excluding Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 150,900,000
Natural Gas | Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 13,800,000
Volume Hedged | MMBTU	59,385,000
Natural Gas | Swaps | 2016
Derivative [Line Items]
Volume Hedged | MMBTU / d	901,739	[1]
Natural Gas | Swaps | 2017
Derivative [Line Items]
Volume Hedged | MMBTU / d	478,192	[1]
Propane | Spread Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ 4,100,000
Propane | Spread Swaps | 2016
Derivative [Line Items]
Volume Hedged | bbl	525,000
Propane | Spread Swaps | 2017
Derivative [Line Items]
Volume Hedged | bbl	1,837,500
Freight | Swaps | Level 2
Derivative [Line Items]
Derivative assets liabilities at fair value net	$ (155,000)
Volume Hedged | t_per_M	5,000
[1]	Includes derivative instruments assumed in connection with the Memorial Merger.

Derivative Activities - Derivat

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)	Sep. 30, 2016MMBTU / dbbl / d$ / MMBTU$ / bbl$ / gal
Natural Gas | Swaps | 2016
Derivative [Line Items]
Volume Hedged | MMBTU / d	901,739	[1]
Weighted Average Hedge Price | $ / MMBTU	3.32	[1]
Natural Gas | Swaps | 2017
Derivative [Line Items]
Volume Hedged | MMBTU / d	478,192	[1]
Weighted Average Hedge Price | $ / MMBTU	3.14	[1]
Natural Gas | Swaps | 2018
Derivative [Line Items]
Volume Hedged | MMBTU / d	70,000
Weighted Average Hedge Price | $ / MMBTU	2.92
Natural Gas | Collar | 2016
Derivative [Line Items]
Volume Hedged | MMBTU / d	32,609	[1]
Weighted Average Floor Price | $ / MMBTU	4	[1]
Weighted Average Cap Price | $ / MMBTU	4.71	[1]
Natural Gas | Collar | 2017
Derivative [Line Items]
Volume Hedged | MMBTU / d	34,521	[1]
Weighted Average Floor Price | $ / MMBTU	4	[1]
Weighted Average Cap Price | $ / MMBTU	5.06	[1]
Natural Gas | Purchased Put | 2016
Derivative [Line Items]
Volume Hedged | MMBTU / d	218,478	[1]
Weighted Average Hedge Price | $ / MMBTU	3.54	[1],[2]
Natural Gas | Purchased Put | 2017
Derivative [Line Items]
Volume Hedged | MMBTU / d	175,890	[1]
Weighted Average Hedge Price | $ / MMBTU	3.48	[1],[3]
Crude Oil | Swaps | 2016
Derivative [Line Items]
Volume Hedged	8,640	[1]
Weighted Average Hedge Price | $ / bbl	69.49	[1]
Crude Oil | Swaps | 2017
Derivative [Line Items]
Volume Hedged	5,416	[1]
Weighted Average Hedge Price | $ / bbl	57.18	[1]
Crude Oil | Swaps | 2018
Derivative [Line Items]
Volume Hedged	500
Weighted Average Hedge Price | $ / bbl	54.25
Crude Oil | Collar | 2016
Derivative [Line Items]
Volume Hedged	848	[1]
Weighted Average Floor Price | $ / bbl	80	[1]
Weighted Average Cap Price | $ / bbl	99.70	[1]
Commodity Contract NGLs (C2 - Ethane) | Swaps | 2016
Derivative [Line Items]
Volume Hedged	5,839	[1]
Weighted Average Hedge Price | $ / gal	0.46	[1]
Commodity Contract NGLs (C2 - Ethane) | Swaps | 2017
Derivative [Line Items]
Volume Hedged	3,000
Weighted Average Hedge Price | $ / gal	0.27
Commodity Contract NGLs (C3 - Propane) | Swaps | 2016
Derivative [Line Items]
Volume Hedged	11,142	[1]
Weighted Average Hedge Price | $ / gal	0.75	[1]
Commodity Contract NGLs (C3 - Propane) | Swaps | 2017
Derivative [Line Items]
Volume Hedged	6,966
Weighted Average Hedge Price | $ / gal	0.52
Commodity Contract NGLs (iC4-isobutane) | Swaps | 2016
Derivative [Line Items]
Volume Hedged	1,969	[1]
Weighted Average Hedge Price | $ / gal	1.21	[1]
Commodity Contract NGLs (NC4 - Normal Butane) | Swaps | 2016
Derivative [Line Items]
Volume Hedged	6,071	[1]
Weighted Average Hedge Price | $ / gal	0.72	[1]
Commodity Contract NGLs (NC4 - Normal Butane) | Swaps | 2017
Derivative [Line Items]
Volume Hedged	1,500
Weighted Average Hedge Price | $ / gal	0.65
Commodity Contract NGLs (C5 - Natural Gasoline) | Swaps | 2016
Derivative [Line Items]
Volume Hedged	8,142	[1]
Weighted Average Hedge Price | $ / gal	1.36	[1]
Commodity Contract NGLs (C5 - Natural Gasoline) | Swaps | 2017
Derivative [Line Items]
Volume Hedged	2,000
Weighted Average Hedge Price | $ / gal	0.98
[1]	Includes derivative instruments assumed in connection with the Memorial Merger.
[2]	Weighted average deferred premium is ($0.34).
[3]	Weighted average deferred premium is ($0.32).

Derivative Activities - Deriv69

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail) - Natural Gas - Purchased Put	Sep. 30, 2016$ / MMBTU
2,016
Derivative [Line Items]
Weighted average deferred premium	0.34
2,017
Derivative [Line Items]
Weighted average deferred premium	0.32

Derivative Activities - Schedul

Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 223,140	$ 304,350
Gross Amounts Offset in the Balance Sheet	(43,320)	(15,588)
Net Amounts of Assets Presented in the Balance Sheet	179,820	288,762
Gross Amounts of Recognized (Liabilities)	(54,531)	(16,745)
Gross Amounts Offset in the Balance Sheet	43,320	15,588
Net Amounts of (Liabilities) Presented in the Balance Sheet	(11,211)	(1,157)
Natural Gas | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	68,069	219,357
Gross Amounts Offset in the Balance Sheet	(24,934)	(10,245)
Net Amounts of Assets Presented in the Balance Sheet	43,135	209,112
Gross Amounts of Recognized (Liabilities)	(31,557)	(10,245)
Gross Amounts Offset in the Balance Sheet	24,934	10,245
Net Amounts of (Liabilities) Presented in the Balance Sheet	(6,623)	0
Natural Gas | Basis Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	15,066	8,251
Gross Amounts Offset in the Balance Sheet	(1,191)	(2,765)
Net Amounts of Assets Presented in the Balance Sheet	13,875	5,486
Gross Amounts of Recognized (Liabilities)	(1,278)	(2,786)
Gross Amounts Offset in the Balance Sheet	1,191	2,765
Net Amounts of (Liabilities) Presented in the Balance Sheet	(87)	(21)
Natural Gas | Collars
Derivative [Line Items]
Gross Amounts of Recognized Assets	15,086
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	15,086
Natural Gas | Puts
Derivative [Line Items]
Gross Amounts of Recognized Assets	50,792
Gross Amounts Offset in the Balance Sheet	(145)
Net Amounts of Assets Presented in the Balance Sheet	50,647
Gross Amounts of Recognized (Liabilities)	0
Gross Amounts Offset in the Balance Sheet	145
Net Amounts of (Liabilities) Presented in the Balance Sheet	145
Crude Oil | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	29,696	38,699
Gross Amounts Offset in the Balance Sheet	(1,292)	0
Net Amounts of Assets Presented in the Balance Sheet	28,404	38,699
Gross Amounts of Recognized (Liabilities)	(2,456)
Gross Amounts Offset in the Balance Sheet	1,292
Net Amounts of (Liabilities) Presented in the Balance Sheet	(1,164)
Crude Oil | Collars
Derivative [Line Items]
Gross Amounts of Recognized Assets	2,416
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	2,416
Commodity Contract NGLs (C2 - Ethane) | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	6,332
Gross Amounts Offset in the Balance Sheet	(185)
Net Amounts of Assets Presented in the Balance Sheet	6,147
Gross Amounts of Recognized (Liabilities)	(185)
Gross Amounts Offset in the Balance Sheet	185
Net Amounts of (Liabilities) Presented in the Balance Sheet	0
Commodity Contract NGLs (C3 - Propane) | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	8,535	15,884
Gross Amounts Offset in the Balance Sheet	(3,719)	0
Net Amounts of Assets Presented in the Balance Sheet	4,816	15,884
Gross Amounts of Recognized (Liabilities)	(3,538)
Gross Amounts Offset in the Balance Sheet	3,719
Net Amounts of (Liabilities) Presented in the Balance Sheet	181
Commodity Contract NGLs (C3 - Propane) | Spread Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	12,585	2,497
Gross Amounts Offset in the Balance Sheet	(8,506)	(2,497)
Net Amounts of Assets Presented in the Balance Sheet	4,079	0
Gross Amounts of Recognized (Liabilities)	(8,506)	(3,633)
Gross Amounts Offset in the Balance Sheet	8,506	2,497
Net Amounts of (Liabilities) Presented in the Balance Sheet	0	(1,136)
Commodity Contract NGLs (NC4 - Normal Butane) | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,282	6,968
Gross Amounts Offset in the Balance Sheet	(371)	0
Net Amounts of Assets Presented in the Balance Sheet	911	6,968
Gross Amounts of Recognized (Liabilities)	(2,407)
Gross Amounts Offset in the Balance Sheet	371
Net Amounts of (Liabilities) Presented in the Balance Sheet	(2,036)
Commodity Contract NGLs (iC4-isobutane) | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	3,557
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	3,557
Commodity Contract NGLs (C5 - Natural Gasoline) | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	9,722	12,694
Gross Amounts Offset in the Balance Sheet	(2,820)	(81)
Net Amounts of Assets Presented in the Balance Sheet	6,902	12,613
Gross Amounts of Recognized (Liabilities)	(4,447)	(81)
Gross Amounts Offset in the Balance Sheet	2,820	81
Net Amounts of (Liabilities) Presented in the Balance Sheet	(1,627)	$ 0
Freight | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	2
Gross Amounts Offset in the Balance Sheet	(157)
Net Amounts of Assets Presented in the Balance Sheet	(155)
Gross Amounts of Recognized (Liabilities)	(157)
Gross Amounts Offset in the Balance Sheet	157
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ 0

Derivative Activities - Effects

Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ 64,556	$ 202,004	$ (11,334)	$ 290,052
Re-purchased Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	0	1,683	0	1,683
Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	1,320	5,626	1,320	12,391
Basis Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	21,853	(3,550)	24,929	(5,943)
Puts
Derivative [Line Items]
Derivative Fair Value Income (Loss)	2,842	0	2,842	0
Commodity | Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	38,662	198,245	(40,270)	281,921
Freight | Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ (121)	$ 0	$ (155)	$ 0

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Swaps | Fair Value, Inputs, Level 2 | Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ (155,000)
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	60,955,000	$ 62,376,000
Fair Value, Measurements, Recurring | 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	60,955,000	62,376,000
Fair Value, Measurements, Recurring | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	82,603,000	283,276,000
Fair Value, Measurements, Recurring | Swaps | Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(155,000)
Fair Value, Measurements, Recurring | Swaps | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	82,603,000	283,276,000
Fair Value, Measurements, Recurring | Swaps | Fair Value, Inputs, Level 2 | Freight
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(155,000)
Fair Value, Measurements, Recurring | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	17,502,000
Fair Value, Measurements, Recurring | Collars | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	17,502,000
Fair Value, Measurements, Recurring | Puts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	50,792,000
Fair Value, Measurements, Recurring | Puts | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	50,792,000
Fair Value, Measurements, Recurring | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	17,867,000	4,329,000
Fair Value, Measurements, Recurring | Basis Swaps | Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ 17,867,000	$ 4,329,000

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2016Counterparty	Sep. 30, 2016USD ($)	Sep. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends	$ 192,000	$ 164,000		$ 509,000	$ 412,000
Mark-to-market gain (loss)	2,300,000	(4,500,000)		3,700,000	(3,700,000)
Impairment on natural gas and oil properties	0	502,233,000		43,040,000	502,233,000
Allowance for doubtful accounts on accounts receivable	5,555,000			5,555,000		$ 4,994,000
Number of financial institutions included in counter parties | Counterparty			24
Number of counterparties | Counterparty			6
Net derivative asset	$ 24,100,000			24,100,000
Western Oklahoma
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties				$ 43,000,000
Northern Oklahoma and Northwest Pennsylvania
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties		$ 502,200,000			$ 502,200,000

Fair Value Measurements - Value

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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties	$ 0	$ 502,233	$ 43,040	$ 502,233
Fair Value, Measurements, Nonrecurring | Natural Gas and Oil Properties
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value	0	98,872	90,150	98,872
Impairment of proved properties	$ 0	$ 502,233	$ 43,040	$ 502,233

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Carrying Value
Assets:
Commodity swaps, options and basis swaps		$ 179,820	$ 288,762
Marketable securities	[1]	60,955	62,376
(Liabilities):
Commodity swaps, options and basis swaps		(11,211)	(1,157)
Bank credit facility	[2]	(937,000)	(95,000)
Deferred compensation plan	[3]	(148,829)	(122,918)
Carrying Value | 5.75% Senior Notes Due 2021
(Liabilities):
Senior notes	[2]	(475,952)
Carrying Value | 5.00% Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(580,032)
Carrying Value | 5.875% Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(329,244)
Carrying Value | Other Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(1,090)
Carrying Value | 5.00% Senior Notes Due 2023
(Liabilities):
Senior notes	[2]	(741,514)
Carrying Value | 4.875% Senior Notes Due 2025
(Liabilities):
Senior notes	[2]	(750,000)	(750,000)
Carrying Value | 5.75% Senior Subordinated Notes Due 2021
(Liabilities):
Subordinated debt	[2]	(22,214)	(500,000)
Carrying Value | 5.00% Senior Subordinated Notes Due 2022
(Liabilities):
Subordinated debt	[2]	(19,054)	(600,000)
Carrying Value | 5.00% Senior Subordinated Notes Due 2023
(Liabilities):
Subordinated debt	[2]	(7,712)	(750,000)
Fair Value
Assets:
Commodity swaps, options and basis swaps		179,820	288,762
Marketable securities	[1]	60,955	62,376
(Liabilities):
Commodity swaps, options and basis swaps		(11,211)	(1,157)
Bank credit facility	[2]	(937,000)	(95,000)
Deferred compensation plan	[3]	(148,829)	(122,918)
Fair Value | 5.75% Senior Notes Due 2021
(Liabilities):
Senior notes	[2]	(482,496)
Fair Value | 5.00% Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(577,132)
Fair Value | 5.875% Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(332,536)
Fair Value | Other Senior Notes Due 2022
(Liabilities):
Senior notes	[2]	(1,091)
Fair Value | 5.00% Senior Notes Due 2023
(Liabilities):
Senior notes	[2]	(723,903)
Fair Value | 4.875% Senior Notes Due 2025
(Liabilities):
Senior notes	[2]	(721,875)	(572,813)
Fair Value | 5.75% Senior Subordinated Notes Due 2021
(Liabilities):
Subordinated debt	[2]	(22,408)	(396,250)
Fair Value | 5.00% Senior Subordinated Notes Due 2022
(Liabilities):
Subordinated debt	[2]	(18,506)	(447,000)
Fair Value | 5.00% Senior Subordinated Notes Due 2023
(Liabilities):
Subordinated debt	[2]	$ (7,490)	$ (551,250)
[1]	Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.
[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.
[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 - Car76

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail)	Sep. 30, 2016	Sep. 16, 2016	Dec. 31, 2015	May 31, 2015
5.75% Senior Notes Due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.75%	5.75%
5.00% Senior Notes Due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%	5.00%
5.00% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%	5.00%
5.875% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.875%
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%
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%	5.75%
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%	5.00%
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%	5.00%

Stock-Based Compensation Plan77

Stock-Based Compensation Plans - Additional Information (Detail) - Plans	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Sep. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Active equity-based stock plans		1
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
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years	3 years

Stock-Based Compensation Plan78

Stock-Based Compensation Plans - Allocation of Stock-Based Compensation by Functional Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 12,686	$ 13,426	$ 42,481	$ 46,328
Direct Operating Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	497	609	1,781	2,149
Brokered Natural Gas and Marketing Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	455	618	1,349	1,743
Exploration Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	608	688	1,669	2,171
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	11,126	11,512	37,682	38,545
Termination Costs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 0	$ (1)	$ 0	$ 1,720

Stock-Based Compensation Plan79

Stock-Based Compensation Plans - PSUA Activities (Detail) - Performance Shares - $ / shares		9 Months Ended
		Sep. 30, 2016		Sep. 30, 2015
Summary of Performance Share Unit Awards outstanding, Number of Units
Outstanding, Beginning Balance		262,124
Granted	[1]	413,959
Vested		(175,306)
Forfeited		(42,603)
Outstanding, Ending Balance		458,174
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance, weighted average grant date fair value		$ 64.77
Granted, weighted average grant date fair value		36.64	[1]	$ 56.78
Vested, weighted average grant date fair value		53.01
Forfeited, weighted average grant date fair value		46.09
Outstanding, Ending Balance, weighted average grant date fair value		$ 45.60
[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 Plan80

Stock-Based Compensation Plans - PSUA Activities (Parenthetical) (Detail)	3 Months Ended	9 Months Ended
	Mar. 31, 2014	Sep. 30, 2016
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 Plan81

Stock-Based Compensation Plans - Valuation Assumptions for Grant Date Fair Value of Performance Awards (Detail) - Performance Shares - $ / shares	9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	0.94%		1.00%
Expected annual volatility	49.00%		33.00%
Weighted average grant date fair value per unit	$ 36.64	[1]	$ 56.78
[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 Plan82

Stock-Based Compensation Plans - Additional Information 1 (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 9.1	$ 6.5

Stock-Based Compensation Plan83

Stock-Based Compensation Plans - Additional Information 2 (Detail) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	940,491	586,000
Granted, weighted average grant date fair value	$ 28.18	$ 52.35
Vesting period	3 years
Stock-based compensation expense	$ 17.2	$ 19.8
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	513,535
Granted, weighted average grant date fair value	$ 36.02
Stock-based compensation expense	$ 14.6	$ 16.1
Restricted Stock Liability Awards | Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	457,000	295,000
Granted, weighted average grant date fair value	$ 35.70	$ 56.17
Vesting period	3 years	3 years
Restricted Stock Liability Awards | Non Employee Director
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	56,000	48,000
Granted, weighted average grant date fair value	$ 38.62	$ 55.03
Stock Appreciation Rights (SARs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Number of stock option outstanding	1,003,600		1,510,977

Stock-Based Compensation Plan84

Stock-Based Compensation Plans - Restricted Stock and Restricted Stock Units Outstanding (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	436,764
Granted	940,491	586,000
Vested	(401,259)
Forfeited	(117,304)
Outstanding, Ending Balance	858,692
Outstanding, Beginning Balance, weighted average grant date fair value	$ 59.74
Granted, weighted average grant date fair value	28.18	$ 52.35
Vested, weighted average grant date fair value	44.25
Forfeited, weighted average grant date fair value	42.66
Outstanding, Ending Balance, weighted average grant date fair value	$ 34.75
Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	308,737
Granted	513,535
Vested	(284,647)
Forfeited	(49,519)
Outstanding, Ending Balance	488,106
Outstanding, Beginning Balance, weighted average grant date fair value	$ 65.80
Granted, weighted average grant date fair value	36.02
Vested, weighted average grant date fair value	52.59
Forfeited, weighted average grant date fair value	40.33
Outstanding, Ending Balance, weighted average grant date fair value	$ 44.76

Stock-Based Compensation Plan85

Stock-Based Compensation Plans - Stock Option and SARs Activities (Detail) - Stock Appreciation Rights (SARs)	9 Months Ended
	Sep. 30, 2016$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance, Shares | shares	1,510,977
Exercised, Shares | shares	0
Expired/forfeited, Shares | shares	(507,377)
Ending Balance, Shares | shares	1,003,600
Beginning Balance, Weighted Average Exercise Price | $ / shares	$ 63.73
Exercised, Weighted Average Exercise Price | $ / shares	0
Expired/forfeited, Weighted Average Exercise Price | $ / shares	53.16
Ending Balance, Weighted Average Exercise Price | $ / shares	$ 69.08

Stock-Based Compensation Plan86

Stock-Based Compensation Plans - Additional Information 3 (Detail) - USD ($) $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Deferred compensation plan vesting period			3 years
Deferred compensation plan	$ (11,636)	$ (43,705)	$ 30,166	$ (56,611)
Shares held in rabbi trust total	2.8		2.8		2.8
Vested shares held in rabbi trust	2.3		2.3		2.5

Supplemental Cash Flow Inform87

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	9 Months Ended			12 Months Ended
	Sep. 30, 2016		Sep. 30, 2015	Dec. 31, 2015	[1]
Net cash provided from operating activities included:
Income taxes (refunded) paid to taxing authorities	$ (101)		$ 100
Interest paid	134,583		128,132
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized	4,655	[1]	19,862	$ 22,184
Increase (decrease) in accrued capital expenditures	$ 12,523		$ (195,472)
[1]	Includes costs incurred whether capitalized or expensed.

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)MMBTU / dbbl / d
Commitments And Contingencies Disclosure [Line Items]
Transportation commitments future minimum transportation fees due to nine months change | $	$ 2,840,505
Period of transportation commitments future minimum transportation fees due to nine months change	15 years
Natural Gas | Minimum
Commitments And Contingencies Disclosure [Line Items]
Transportation and gathering commitments contingent upon pipeline construction or modification, term of contract	1 year
Oil and Gas Delivery Commitments and Contracts, Daily Production	1,500
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	50,560
Ethane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000
Oil and gas delivery commitments, term	15 years

Commitments and Contingencies89

Commitments and Contingencies - Schedule of Increase to Future Minimum Transportation and Gathering Fees (Detail) $ in Thousands	Sep. 30, 2016USD ($)
Disclosure Commitments And Contingencies Schedule Of Future Minimum Transportation And Gathering Fees [Abstract]
2,016	$ 60,522
2,017	263,118
2,018	263,734
2,019	264,293
2,020	214,487
Thereafter	1,774,351
Transportation and Gathering Contracts	$ 2,840,505

Office Closing and Terminatio90

Office Closing and Termination Costs - Additional Information (Detail) - USD ($)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Restructuring Cost And Reserve [Line Items]
Termination costs	$ 136,000	$ (77,000)	$ 8,400,000	$ 303,000	$ 6,290,000
Stock-based compensation expense (gain)					1,720,000
Building lease				303,000	3,156,000	$ 3,200,000
Office closing costs					$ 1,414,000
Memorial
Restructuring Cost And Reserve [Line Items]
Termination costs				0
Office closing costs				$ 0
Oklahoma City Restructuring
Restructuring Cost And Reserve [Line Items]
Additional accruals for severance costs						275,000
Stock-based compensation expense (gain)						$ 608,000

Office Closing and Terminatio91

Office Closing and Termination Costs - Summary of Termination Costs (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Termination costs					$ 1,414
Building lease				$ 303	3,156	$ 3,200
Stock-based compensation					1,720
Total termination costs	$ 136	$ (77)	$ 8,400	$ 303	$ 6,290

Office Closing and Terminatio92

Office Closing and Termination Costs - Exit Costs Included in Accrued Liabilities in Consolidated Balance Sheet (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance at December 31, 2015	$ 11,630
Accrued building rent	303
Payments	(8,858)
Ending balance at September 30, 2016	$ 3,075

Capitalized Costs and Accumul93

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Natural gas and oil properties:
Properties subject to depletion	[1]	$ 9,263,853	$ 8,047,181
Unproved properties	[1]	2,936,529	949,155
Total	[1]	12,200,382	8,996,336
Accumulated depletion and depreciation	[1]	(2,994,282)	(2,635,031)
Natural gas and oil properties, successful efforts method, net	[1]	$ 9,206,100	$ 6,361,305
[1]	Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property A94

Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		9 Months Ended			12 Months Ended
		Sep. 30, 2016		Sep. 30, 2015	Dec. 31, 2015
Acquisitions:
Acreage purchases	[1]	$ 16,282			$ 73,025
Oil and gas properties	[1]	3,086,635
Asset retirement obligations	[1]	16,609
Development	[1]	302,518			708,268
Exploration:
Exploration drilling costs incurred	[1]	37,528			87,505
Gas gathering facilities:
Development	[1]	1,345			13,337
Subtotal	[1]	3,479,558			903,541
Asset retirement obligations		4,655	[1]	$ 19,862	22,184	[1]
Total costs incurred	[1]	3,484,213			925,725
Expense
Exploration:
Exploration costs incurred	[1]	16,972			18,421
Stock-based compensation expense	[1]	$ 1,669			$ 2,985
[1]	Includes costs incurred whether capitalized or expensed.