Range Resources (RRC) 10-Q 29 Oct 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 26, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	RANGE RESOURCES CORPORATION
Entity Central Index Key	0000315852
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		256,333,325
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-12209
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	34-1312571
Entity Address, Address Line One	100 Throckmorton Street
Entity Address, Address Line Two	Suite 1200
Entity Address, City or Town	Fort Worth
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76102
City Area Code	817
Local Phone Number	870-2601
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, (Par Value $0.01)
Trading Symbol	RRC
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 517	$ 546
Accounts receivable, less allowance for doubtful accounts of $3,004 and $8,784		182,698	272,900
Derivative assets		5,264	136,848
Other current assets		20,668	17,508
Total current assets		209,147	427,802
Derivative assets		15,062	706
Natural gas properties, successful efforts method	[1]	9,646,901	10,213,737
Accumulated depletion and depreciation	[1]	(3,975,930)	(4,172,702)
Natural gas and oil properties, successful efforts method, net	[1]	5,670,971	6,041,035
Other property and equipment		79,632	102,083
Accumulated depreciation and amortization		(75,203)	(96,708)
Other Property and equipment, net		4,429	5,375
Operating lease right-of-use assets		43,763	62,053
Other assets		69,526	75,432
Total assets		6,012,898	6,612,403
Current liabilities:
Accounts payable		84,554	155,341
Asset retirement obligations		2,103	2,393
Accrued liabilities		310,376	356,392
Accrued interest		31,680	39,299
Derivative liabilities		53,408	13,119
Divestiture contract obligation		102,665	0
Current maturities of long-term debt	[2]	45,334	0
Total current liabilities		630,120	566,544
Bank debt		696,172	464,319
Senior notes		2,328,585	2,659,844
Senior subordinated notes		17,375	48,774
Deferred tax liabilities		62,319	160,196
Derivative liabilities		31,503	949
Deferred compensation liabilities		69,927	64,070
Operating lease liabilities		32,238	41,068
Asset retirement obligations and other liabilities		98,359	259,151
Divestiture contract obligation		383,796	0
Total liabilities		4,350,394	4,264,915
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding		0	0
Common stock, $0.01 par, 475,000,000 shares authorized, 256,232,010 issued at September 30, 2020 and 251,438,936 issued at December 31, 2019		2,562	2,514
Common stock held in treasury, 10,005,795 shares at September 30, 2020 and 1,808,133 shares at December 31, 2019		(30,131)	(7,236)
Additional paid-in capital		5,679,197	5,659,832
Accumulated other comprehensive loss		(574)	(788)
Retained deficit		(3,988,550)	(3,306,834)
Total stockholders’ equity		1,662,504	2,347,488
Total liabilities and stockholders’ equity		$ 6,012,898	$ 6,612,403
[1]
[2]	As of September 30, 2020, current maturities includes $45.4 million principal amount of our 5.75% senior and senior subordinated notes due 2021

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 3,004	$ 8,784
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	256,232,010	251,438,936
Common stock held in treasury, shares	10,005,795	1,808,133

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues and other income:
Revenues and other income	$ 424,035	$ 547,769	$ 1,267,629	$ 2,013,821
Derivative fair value (loss) income	(124,690)	74,676	102,182	208,190
Total revenues and other income	299,345	622,445	1,369,811	2,222,011
Costs and expenses:
Production and ad valorem taxes	6,106	7,805	20,682	29,004
Brokered natural gas and marketing	47,967	79,938	118,752	313,360
Exploration	8,086	11,013	23,190	27,333
Abandonment and impairment of unproved properties	5,667	16,202	16,604	41,631
General and administrative	38,153	41,047	118,695	138,316
Exit and termination costs	521,633	819	533,525	3,025
Deferred compensation plan	6,237	(8,871)	10,287	(16,432)
Interest	47,999	46,997	144,141	150,261
Loss (gain) on early extinguishment of debt	7,821	(2,985)	(14,093)	(2,985)
Depletion, depreciation and amortization	96,167	137,751	303,779	417,974
Impairment of proved properties and other assets	1,955	0	78,955	0
Loss (gain) on the sale of assets	9,230	36,341	(112,443)	30,663
Total costs and expenses	1,084,644	697,245	2,149,766	2,134,420
(Loss) income before income taxes	(785,299)	(74,800)	(779,955)	87,591
Income tax (benefit) expense:
Current	0	4,079	(366)	4,079
Deferred	(105,251)	(51,298)	(97,947)	(5,511)
Total (benefit) expense for income taxes	(105,251)	(47,219)	(98,313)	(1,432)
Net (loss) income	$ (680,048)	$ (27,581)	$ (681,642)	$ 89,023
Net (loss) income per common share:
Basic	$ (2.83)	$ (0.11)	$ (2.82)	$ 0.35
Diluted	(2.83)	(0.11)	(2.82)	0.35
Dividends paid per common share	$ 0	$ 0.02	$ 0	$ 0.06
Weighted average common shares outstanding:
Basic	239,895	248,082	241,770	247,878
Diluted	239,895	248,082	241,770	248,823
Natural Gas, NGLs and Oil Sales
Revenues and other income:
Revenues and other income	$ 381,553	$ 474,754	$ 1,162,907	$ 1,709,987
Brokered Natural Gas, Marketing and Other
Revenues and other income:
Revenues and other income	42,482	73,015	104,722	303,834
Direct Operating
Costs and expenses:
Costs and expenses	19,515	35,276	75,944	102,484
Transportation, Gathering, Processing and Compression
Costs and expenses:
Costs and expenses	$ 268,108	$ 295,912	$ 831,748	$ 899,786

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (680,048)	$ (27,581)	$ (681,642)	$ 89,023
Postretirement benefits:
Actuarial (loss) gain		(12)	7	(37)
Amortization of prior service costs	92	92	277	276
Income tax expense	(22)	(20)	(70)	(59)
Total comprehensive (loss) income	$ (679,978)	$ (27,521)	$ (681,428)	$ 89,203

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net (loss) income	$ (681,642)	$ 89,023
Adjustments to reconcile net (loss) income to net cash provided from
Deferred income tax benefit	(97,947)	(5,511)
Depletion, depreciation and amortization and impairment of proved properties and other assets	382,734	417,974
Abandonment and impairment of unproved properties	16,604	41,631
Derivative fair value income	(102,182)	(208,190)
Cash settlements on derivative financial instruments	305,243	138,349
Divestiture contract obligation	486,689	0
Allowance for bad debt	400	(141)
Amortization of deferred financing costs and other	5,023	4,862
Deferred and stock-based compensation	38,380	14,410
Loss (gain) on the sale of assets	(112,443)	30,663
Loss (gain) on early extinguishment of debt	(14,093)	(2,985)
Changes in working capital:
Accounts receivable	91,343	241,514
Other current assets	(5,786)	(4,024)
Accounts payable	(52,820)	(52,645)
Accrued liabilities and other	(80,529)	(155,499)
Net cash provided from operating activities	178,974	549,431
Investing activities:
Additions to natural gas properties	(321,849)	(550,355)
Additions to field service assets	(2,493)	(803)
Acreage purchases	(18,554)	(39,795)
Proceeds from disposal of assets	246,083	784,527
Purchases of marketable securities held by the deferred compensation plan	(14,855)	(16,741)
Proceeds from the sales of marketable securities held by the deferred compensation plan	20,974	21,344
Net cash (used in) provided from investing activities	(90,694)	198,177
Financing activities:
Borrowings on credit facilities	1,676,000	1,730,000
Repayments on credit facilities	(1,447,000)	(2,345,000)
Issuance of senior notes	850,000	0
Repayment of senior or senior subordinated notes	(1,120,634)	(90,274)
Dividends paid	0	(15,077)
Treasury stock purchases	(22,992)	0
Debt issuance costs	(12,735)	0
Taxes paid for shares withheld	(2,841)	(3,371)
Change in cash overdrafts	(8,797)	(24,744)
Proceeds from the sales of common stock held by the deferred compensation plan	690	667
Net cash used in financing activities	(88,309)	(747,799)
Decrease in cash and cash equivalents	(29)	(191)
Cash and cash equivalents at beginning of period	546	545
Cash and cash equivalents at end of period	$ 517	$ 354

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Common stock held in treasury	Additional paid-in capital	Retained deficit	Accumulated other comprehensive loss
Beginning balance at Dec. 31, 2018	$ 4,059,431	$ 2,495	$ (391)	$ 5,628,447	$ (1,570,462)	$ (658)
Beginning balance Shares at Dec. 31, 2018		249,520,000
Issuance of common stock	(2,379)	$ 17		(2,396)
Issuance of common stock, shares		1,628,000
Issuance of common stock upon vesting of PSUs				4	(4)
Stock-based compensation expense	9,155			9,155
Cash dividends paid ($0.02 per share)	(5,023)				(5,023)
Other comprehensive income	60					60
Net income(loss)	1,419				1,419
Ending balance at Mar. 31, 2019	4,062,663	$ 2,512	(391)	5,635,210	(1,574,070)	(598)
Ending balance Shares at Mar. 31, 2019		251,148,000
Beginning balance at Dec. 31, 2018	4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Beginning balance Shares at Dec. 31, 2018		249,520,000
Net income(loss)	89,023
Ending balance at Sep. 30, 2019	4,158,192	$ 2,514	(328)	5,653,005	(1,496,521)	(478)
Ending balance Shares at Sep. 30, 2019		251,425,000
Beginning balance at Dec. 31, 2018	4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Beginning balance Shares at Dec. 31, 2018		249,520,000
Ending balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Ending balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Beginning balance at Mar. 31, 2019	$ 4,062,663	$ 2,512	(391)	5,635,210	(1,574,070)	(598)
Beginning balance Shares at Mar. 31, 2019		251,148,000
Issuance of common stock	1,549	$ 2		1,547
Issuance of common stock, shares		206,000
Issuance of common stock upon vesting of PSUs				1	(1)
Stock-based compensation expense	7,822			7,822
Cash dividends paid ($0.02 per share)	(5,026)				(5,026)
Other comprehensive income	60					60
Net income(loss)	115,185				115,185
Ending balance at Jun. 30, 2019	4,182,253	$ 2,514	(391)	5,644,580	(1,463,912)	(538)
Ending balance Shares at Jun. 30, 2019		251,354,000
Issuance of common stock	1,170			1,170
Issuance of common stock, shares		71,000
Stock-based compensation expense	7,318			7,318
Cash dividends paid ($0.02 per share)	(5,028)				(5,028)
Treasury stock			63	(63)
Other comprehensive income	60					60
Net income(loss)	(27,581)				(27,581)
Ending balance at Sep. 30, 2019	4,158,192	$ 2,514	(328)	5,653,005	(1,496,521)	(478)
Ending balance Shares at Sep. 30, 2019		251,425,000
Beginning balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Beginning balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Issuance of common stock	$ (1,364)	$ 42		(1,406)
Issuance of common stock, shares		4,246,000
Stock-based compensation expense	5,963			5,963
Treasury stock	(22,547)		(22,514)	(33)
Other comprehensive income	73					73
Net income(loss)	144,975				144,975
Ending balance at Mar. 31, 2020	2,474,588	$ 2,556	(29,750)	5,664,356	(3,161,859)	(715)
Ending balance Shares at Mar. 31, 2020		255,685,000
Beginning balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Beginning balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Net income(loss)	$ (681,642)
Ending balance at Sep. 30, 2020	$ 1,662,504	$ 2,562	(30,131)	5,679,197	(3,988,550)	(574)
Ending balance Shares at Sep. 30, 2020	256,232,010	256,232,000
Beginning balance at Mar. 31, 2020	$ 2,474,588	$ 2,556	(29,750)	5,664,356	(3,161,859)	(715)
Beginning balance Shares at Mar. 31, 2020		255,685,000
Issuance of common stock	858	$ 4		854
Issuance of common stock, shares		376,000
Issuance of common stock upon vesting of PSUs				74	(74)
Issuance of common stock upon vesting of PSUs, shares		19
Stock-based compensation expense	7,312			7,312
Treasury stock	(444)		(444)
Other comprehensive income	71					71
Net income(loss)	(146,569)				(146,569)
Ending balance at Jun. 30, 2020	2,335,816	$ 2,560	(30,194)	5,672,596	(3,308,502)	(644)
Ending balance Shares at Jun. 30, 2020		256,080,000
Issuance of common stock	75	$ 2		73
Issuance of common stock, shares		152,000
Stock-based compensation expense	6,591			6,591
Treasury stock			63	(63)
Other comprehensive income	70					70
Net income(loss)	(680,048)				(680,048)
Ending balance at Sep. 30, 2020	$ 1,662,504	$ 2,562	$ (30,131)	$ 5,679,197	$ (3,988,550)	$ (574)
Ending balance Shares at Sep. 30, 2020	256,232,010	256,232,000

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended				9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Stockholders Equity [Abstract]
Dividends paid per common share	$ 0	$ 0.02	$ 0.02	$ 0.02	$ 0	$ 0.06

Summary of Organization and Nat

Summary of Organization and Nature of Business	9 Months Ended
	Sep. 30, 2020
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 and natural gas liquids (“NGLs”) company primarily engaged in the exploration, development and acquisition of natural gas properties in the Appalachian region of the United States. Our objective is to build stockholder value through returns-focused development of natural gas properties. 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, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	(2) BASIS OF PRESENTATION These consolidated financial statements are unaudited but, in the opinion of management, reflect all adjustments necessary for a fair statement of the results for the periods reported. 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. These interim financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our 2019 Annual Report on Form 10-K filed with the Securities and Exchange Commission (the “SEC”) on February 27, 2020. The results of operations for third quarter and nine months ended September 30, 2020 are not necessarily indicative of the results to be expected for the full year.

New Accounting Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2020
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Standards	(3) NEW ACCOUNTING STANDARDS Not Yet Adopted None that are expected to have a material impact on our financial statements. Recently Adopted Financial Instruments – Credit Losses In September 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking “expected loss” model as opposed to the current “incurred loss” model. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements. Fair Value Measurement In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements. Lease Accounting Standard In February 2016, an accounting standards update was issued that requires an entity to recognize a right-of-use (“ROU”) asset and lease liability for all leases. Classification of leases as either a finance or operating lease determines the recognition, measurement and presentation of expenses. This accounting standards update also required certain quantitative and qualitative disclosures about leasing arrangements. The new standard was effective for us in first quarter 2019 and we adopted the new standard using a modified retrospective approach, with the date of initial application effective on January 1, 2019. Consequently, upon transition, we recognized a ROU asset (or operating lease right-of-use asset) and a lease liability with no retained earnings impact. Our adoption did not have a material impact on our consolidated balance sheet as of January 1, 2019, with the primary impact relating to the recognition of ROU assets and operating lease liabilities for operating leases which represents approximately a 1% change to total assets and total liabilities.

Dispositions

Dispositions	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Dispositions	(4) DISPOSITIONS We recognized a pretax net loss of $9.2 million on the sale of assets in third quarter 2020 compared to a pretax net loss of $36.3 million in third quarter 2019 and a pretax net gain of $112.4 million in first nine months 2020 compared to a pretax net loss of $30.7 million in first nine months 2019. See discussion below for further details. 2020 Dispositions North Louisiana. In August 2020, we completed the sale of our North Louisiana assets for total consideration having an estimated fair value of $260.0 million. This estimated fair value reflects (i) cash proceeds of $245.0 million, before normal closing adjustments and (ii) $15.0 million in contingent consideration which represents the estimated fair value, on August 14, 2020, of the contingent consideration we are entitled to receive in the future should certain commodity price thresholds be met. We recorded a pretax loss of $8.1 million, after closing adjustments. • Contingent consideration. We are entitled to receive contingent consideration, annually through 2023, of up to $90.0 million based on future achievement of certain natural gas and oil prices based on published indexes along with the realized NGLs price of the buyer. We used an option pricing model to determine the fair value of the contingent consideration which resulted in an estimated fair value of $15.0 million at closing. The fair value of the contingent consideration is classified as current and noncurrent derivative asset on our consolidated balance sheet. We will revalue the contingent consideration each reporting period, with any valuation changes being recorded as derivative fair value income or loss in our consolidated statements of operations. See also Note 11 and Note 12 for additional information. • Divestiture contract obligation. As part of the sale of our North Louisiana assets, we retained certain midstream gathering, transportation and processing obligations through 2030. We determined the fair value of these obligations as of the closing date of the sale, to be $479.8 million using a probability weighted discounted cash flow model. The divestiture contract obligation is included in current or non-current liabilities in our consolidated balance sheet based on the forecasted timing of payments. These costs are recognized in exit and termination costs in our consolidated statements of operations. See also Note 12 for additional information. • Novated derivatives. Also as part of the sale of our North Louisiana assets, during third quarter 2020, we entered into certain natural gas derivative positions which were subsequently novated to the buyer in conjunction with the completion of the sale. The unrealized fair value of these derivatives at the closing of the sale was a net liability of $12.1 million which was transferred to the buyer. The unrealized loss associated with the novated positions was offset by the gain that we recognized when the liability was transferred to the buyer. These offsetting amounts were recognized on our consolidated statements of operations in loss on sale of assets. Pennsylvania . In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania for proceeds of $1.0 million. Based upon the receipt of approval from state governmental authorities of a change in operatorship during that quarter, we recognized a pretax gain of $122.5 million primarily due to the elimination of the asset retirement obligation associated with these properties. Other . In third quarter 2020, we sold miscellaneous inventory and other assets for proceeds of $11,000 resulting in a pretax loss of $1.1 million. In first six months 2020, we sold miscellaneous inventory and other assets for proceeds of $71,000, resulting in a pretax loss of $833,000. 2019 Dispositions Pennsylvania. In third quarter 2019, we sold a proportionately reduced 2.5% overriding royalty in three separate transactions primarily covering our Washington County, Pennsylvania leases for gross proceeds of $750.0 million. We recorded a loss of $36.5 million which represents closing adjustments and transaction fees. In second quarter 2019, we sold natural gas and oil property, primarily representing over 20,000 unproved acres, for proceeds of $34.0 million and recognized a pretax gain of $5.9 million. Other . In third quarter 2019, we sold miscellaneous inventory and other assets for proceeds of $161,000 resulting in a pretax gain of $117,000. In first six months 2019, we sold miscellaneous inventory and other assets for proceeds of $366,000 resulting in a pretax loss of $187,000.

Revenues from Contracts with Cu

Revenues from Contracts with Customers	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenues from Contracts with Customers	(5) REVENUES FROM CONTRACTS WITH CUSTOMERS Disaggregation of Revenue We have three material revenue streams in our business: natural gas sales, NGLs sales and crude oil and condensate sales (referred to below as “oil sales”). Brokered revenue attributable to each product sales type is included here because the volume of product that we purchase is subsequently sold to separate counterparties in accordance with existing sales contracts under which we also sell our production. Accounts receivable attributable to our revenue contracts with customers was $162.9 million at September 30, 2020 and $237.0 million at December 31, 2019. Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands): Three Months Ended September Nine Months Ended September 30, 2020 2019 2020 2019 Natural gas sales $ 211,638 $ 284,980 $ 679,094 $ 1,063,323 NGLs sales 149,263 143,195 416,885 508,035 Oil sales 20,652 46,579 66,928 138,629 Total natural gas, NGLs and oil sales 381,553 474,754 1,162,907 1,709,987 Sales of purchased natural gas 39,180 70,404 94,364 293,209 Sales of purchased NGLs 1,084 (183 ) 3,230 1,425 Other marketing revenue 2,218 2,794 7,128 9,200 Total $ 424,035 $ 547,769 $ 1,267,629 $ 2,013,821

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	(6) INCOME TAXES We evaluate and update our annual effective income tax rate on a quarterly basis based on current and forecasted operating results and tax laws. Consequently, based upon the mix and timing of our actual earnings compared to annual projections, our effective tax rate may vary quarterly and may make comparisons not meaningful (“NM”). The effective income tax rate is influenced by a variety of factors including geographic sources and relative magnitude of these sources of income. Income taxes for discrete items are computed and recorded in the period that a specific transaction occurs. For the three months and nine months ended September 30, 2020 and 2019, our overall effective tax rate was different than the federal statutory rate due primarily to state income taxes, equity compensation, valuation allowances and other tax items. Our income tax benefit is summarized below (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Income tax benefit $ (105,251 ) $ (47,219 ) $ (98,313 ) $ (1,432 ) Effective tax rate 13.4 % NM 12.6 % NM

Income (Loss) Per Common Share

Income (Loss) Per Common Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Income (Loss) Per Common Share	(7) INCOME (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 sets 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, 2020 2019 2020 2019 Net (loss) income, as reported $ (680,048 ) $ (27,581 ) $ (681,642 ) $ 89,023 Participating earnings (a) — (67 ) — (1,105 ) Basic net (loss) income attributed to common shareholders (680,048 ) (27,648 ) (681,642 ) 87,918 Reallocation of participating earnings (a) — — — 3 Diluted net (loss) income attributed to common shareholders $ (680,048 ) $ (27,648 ) $ (681,642 ) $ 87,921 Net (loss) income per common share: Basic $ (2.83 ) $ (0.11 ) $ (2.82 ) $ 0.35 Diluted $ (2.83 ) $ (0.11 ) $ (2.82 ) $ 0.35 (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 provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Weighted average common shares outstanding – basic 239,895 248,082 241,770 247,878 Effect of dilutive securities: Director and employee restricted stock and performance based equity awards — — — 945 Weighted average common shares outstanding – diluted 239,895 248,082 241,770 248,823 Weighted average common shares outstanding-basic for third quarter 2020 excludes 6.2 million shares of restricted stock held in our deferred compensation plan compared to 3.3 million shares in third quarter 2019 (although all awards are issued and outstanding upon grant). Weighted average common shares outstanding-basic for first nine months 2020 excludes 5.3 million shares of restricted stock compared to 3.1 million shares for first nine months 2019. Due to our net loss for third quarter 2020, third quarter 2019 and first nine months 2020, we excluded all equity grants from the computation of diluted loss per share because the effect would have been anti-dilutive to the computations. For first nine months 2019, equity grants of 1.6 million were outstanding but not included in the computation of diluted net income per share because the grant prices were greater than the average market price of our common shares and would be anti-dilutive to the computation. Nonvested restricted stock and performance based equity awards are included in the computation using the treasury stock method with the deemed proceeds equal to the average unrecognized compensation during the period.

Capitalized Costs and Accumulat

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	9 Months Ended
	Sep. 30, 2020
Extractive Industries [Abstract]
Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	(8) Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (a) September 30, December 31, (in thousands) Natural gas properties: Properties subject to depletion $ 8,784,788 $ 9,345,557 Unproved properties 862,113 868,180 Total 9,646,901 10,213,737 Accumulated depletion and depreciation (3,975,930 ) (4,172,702 ) Net capitalized costs $ 5,670,971 $ 6,041,035 (a)

Indebtedness

Indebtedness	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Indebtedness	(9) INDEBTEDNESS We had the following debt outstanding as of the dates shown below (bank debt interest rate at September 30, 2020 is shown parenthetically). No interest was capitalized during the nine months ended September 30, 2020 or the year ended December 31, 2019 (in thousands). September 30, 2020 December 31, 2019 Bank debt ( 2.2% $ 706,000 $ 477,000 Senior notes: 4.875% senior notes due 2025 750,000 750,000 5.00% senior notes due 2023 532,335 741,531 5.00% senior notes due 2022 169,589 511,886 5.75% senior notes due 2021 25,496 374,139 5.875% senior notes due 2022 48,528 297,617 9.25% senior notes due 2026 850,000 — Other senior notes due 2022 490 590 Total senior notes 2,376,438 2,675,763 Senior subordinated notes: 5.00% senior subordinated notes due 2023 7,712 7,712 5.00% senior subordinated notes due 2022 9,730 19,054 5.75% senior subordinated notes due 2021 19,896 22,214 Total senior subordinated notes 37,338 48,980 Total debt 3,119,776 3,201,743 Unamortized premium 525 3,013 Unamortized debt issuance costs (32,835 ) (31,819 ) Total debt net of debt issuance costs 3,087,466 3,172,937 Less current maturities of long-term debt (a) (45,334 ) — Total long-term debt $ 3,042,132 $ 3,172,937 (a) Bank Debt In April 2018, 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 April 13, 2023. The bank credit facility provides for a maximum facility amount of $4.0 billion and an initial borrowing base of $3.0 billion. The bank credit facility also provides for a borrowing base subject to periodic redeterminations and for event-driven unscheduled redeterminations. As of September 30, 2020, our bank group was composed of twenty-six financial institutions with no one bank holding more than 7.0% 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. 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 2.4% for third quarter 2020 compared to 3.8 % for third quarter 2019. The weighted average interest rate was 2.7 % for first nine months 2020 compared to 4.0 % for first nine months 2019. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30 % to 0.375 %. At September 3 0 , 20 20 , the commitment fee was % and the interest rate margin was 2.00 % on our LIBOR loans and 1.0 % on our base rate loans. As part of our redetermination completed in September 2020, our borrowing base was reaffirmed for $3.0 billion and our bank commitment was also reaffirmed at $2.4 billion. On September 30, 2020, bank commitments totaled $2.4 billion and the outstanding balance under our bank credit facility was $706.0 million, before deducting debt issuance costs. Additionally, we had $332.0 million of undrawn letters of credit leaving $1.4 billion of committed borrowing capacity available under the facility. As part of our redetermination completed in March 2020, we agreed to return to a semi-annual borrowing base redetermination, an increase in the applicable margin of 50 basis points on drawn facility balances and an increase to the letter of credit sublimit. New Senior Notes In January 2020, we issued $550.0 million aggregate principal amount of 9.25% senior notes due 2026 (the “9.25% Notes”) for net proceeds of $541.4 million after underwriting expenses and commissions of $8.6 million. The notes were issued at par. The 9.25% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S of the Securities Act of 1933, as amended (the “Securities Act”). Interest due on the 9.25% Notes is payable semi-annually in February and August and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after February 1, 2025, we may redeem the 9.25% Notes, in whole or in part and from time to time, at 100% of the principal amounts plus accrued and unpaid interest. We may redeem the notes prior to their maturity at redemption prices based on a premium, plus accrued and unpaid interest as described in the indenture governing the 9.25% Notes. Upon occurrence of certain changes in control, we must offer to repurchase the 9.25% Notes. The 9.25% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future unsecured debt and rank senior to all of our existing and future subordinated debt. On the closing of the issuance of the 9.25% Notes, we used the proceeds to redeem $324.1 million of our 5.75% senior notes due 2021 and $175.9 million of our 5.875% senior notes due 2022 with the remainder used to repay a portion of our borrowings under our bank credit facility. In September 2020, we issued an additional $300.0 million aggregate principal amount of our 9.25% Notes (the “Additional 9.25% Notes”) for an estimated net proceeds of $295.0 million after underwriting expenses and commissions of $5.0 million. On the closing of the issuance of the additional 9.25% Notes, we used these proceeds, along with proceeds from our credit facility, to redeem $12.1 million of our 5.75% senior notes due 2021 and $291.0 million of our 5.00% senior notes due 2022, $65.1 million of our 5.875% senior notes due 2022, $122.3 million of our 5.00% senior notes due 2023, $1.2 million of our 5.75% senior subordinated notes due 2021 and $8.3 million of our 5.00% senior subordinated notes due 2022. Early Extinguishment of Debt In September 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021, 5.00% senior notes due 2022, 5.875% senior notes due 2022, 5.00% senior notes due 2023, 5.75% senior subordinated notes due 2021 and 5.00% senior subordinated note due 2022. An early cash tender of $5.3 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in third quarter 2020 of $8.0 million, net of transaction call premium costs and the expenses of the remaining deferred financing costs on the repurchased debt. The cash tender offer and the early cash tender premium were financed from the issuance of the Additional 9.25% Notes (see New Senior Notes above) and proceeds from our credit facility. In August, the proceeds received from the sale of our North Louisiana assets were used to reduce borrowings under our credit facility. Also in third quarter 2020, we purchased in the open market $760,000 principal amount of our 5.75% senior subordinated notes due 2021, $66,000 principal amount of our 5.875% senior notes due 2022, $1.0 million principal amount of our 5.00% senior notes due 2022 and $1.0 million principal amount of our 5.00% senior subordinated notes due 2022. We recognized a gain on early extinguishment of debt in third quarter 2020 of $200,000, net of transaction costs and expensing of the remaining deferred costs on the purchased debt. In January 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021 and our 5.875% senior notes due 2022. An early cash tender of $15.1 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in first quarter 2020 of $17.5 million, net of transaction call premium costs and the expenses of the remaining deferred financing costs on the repurchased debt. The cash tender offer and early cash tender premium were financed from the issuance of our new 9.25% Notes. See New Senior Notes Also in first quarter 2020, we purchased in the open market $48.5 million principal amount of our 5.00% senior notes due 2022, $5.8 million principal amount of our 5.875% senior notes due 2022 and $56.6 million principal amount of our 5.00% senior notes due 202 3 . We recognized a gain on early extinguishment of debt in first quarter 2020 of $ million , net of transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt . In second quarter 2020, we purchased in the open market $349,000 principal amount of our 5.75% senior subordinated notes due 2021, $12.5 million principal amount of our 5.75% senior notes due 2021, $1.8 million principal amount of our 5.00% senior notes due 2022, $2.2 million principal amount of our 5.875% senior notes due 2022 and $30.2 million principal amount of our 5.00% senior notes due 2023. We recognized a gain on early extinguishment of debt in second quarter 2020 of $9.0 million, net of transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt. Senior Notes and Senior Subordinated Notes If we experience a change of control, noteholders may require us to repurchase all or a portion of our senior notes and 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 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, 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 bank credit facility 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, 2020.

Asset Retirement Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2020
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	(10) 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, 2020 and the year ended December 31, 2019 is as follows (in thousands): Nine Months Ended September 30, 2020 Year Ended December 31, 2019 Beginning of period $ 251,076 $ 312,754 Liabilities incurred 1,890 4,063 Acquisitions 123 — Liabilities settled (3,068 ) (5,953 ) Disposition of wells (176,747 ) (82,576 ) Accretion expense 6,207 15,658 Change in estimate 2,573 7,130 End of period 82,054 251,076 Less current portion (2,103 ) (2,393 ) Long-term asset retirement obligations $ 79,951 $ 248,683 Accretion expense is recognized as a component of depreciation, depletion and amortization expense in the accompanying consolidated statements of operations .

Derivative Activities

Derivative Activities	9 Months Ended
	Sep. 30, 2020
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 utilize commodity swaps, collars, three-way collars or swaptions 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 loss of $83.5 million at September 30, 2020. These contracts expire monthly through December 2021. The following table sets forth our commodity-based derivative volumes by year as of September 30, 2020, excluding our basis and freight swaps and divestiture contingent consideration which are discussed separately below: Period Contract Type Volume Hedged Weighted Average Hedge Price Swap Sold Put Floor Ceiling Natural Gas (1) 2020 Swaps 1,133,587 Mmbtu/day $ 2.63 2021 Swaps 510,000 Mmbtu/day $ 2.77 2020 Collars 5,041 Mmbtu/day $ 2.00 $ 2.50 January – October 2021 Collars 342,237 Mmbtu/day $ 2.51 $ 3.00 2020 Three-way Collars 79,891 Mmbtu/day $ 2.23 $ 2.58 $ 3.19 2021 Three-way Collars 240,000 Mmbtu/day $ 1.99 $ 2.33 $ 2.60 Crude Oil 2020 Swaps 6,000 bbls/day $ 58.02 2021 Swaps 1,000 bbls/day $ 55.00 NGLs (C3-Propane) 2020 Swaps 6,000 bbls/day $ 0.51/gallon NGLs (NC4-Normal Butane) 2020 Swaps 1,000 bbls/day $ 0.60/gallon NGLs (C5-Natural Gasoline) 2020 Swaps 2,000 bbls/day $ 0.89/gallon ( 1 ) We also sold natural gas call swaptions of 140,000 Mmbtu/day for 2021 at a weighted average price of $2.88. In addition, we sold natural gas call swaptions of 280,000 bbls per day for 2022 at a weighted average price of $2.81. Every derivative instrument is required to be recorded on the balance sheet as either an asset or a liability measured at its fair value. We recognize all changes in fair value of these derivatives as earnings in derivative fair value income or loss in the periods in which they occur. Basis Swap Contracts In addition to the swaps, collars and swaptions described above, at September 30, 2020, we had natural gas basis swap contracts which lock in the differential between NYMEX Henry Hub and certain of our physical pricing indices. These contracts settle monthly through December 2024 and include a total volume of 81,745,000 Mmbtu. The fair value of these contracts was a gain of $5.4 million at September 30, 2020. At September 30, 2020, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indices. The contracts settle monthly in 2020 and include a total volume of 312,500 barrels. The fair value of these contracts was a loss of $529,000 at September 30, 2020. Freight Swap Contracts In connection with our international propane sales, we utilize propane swaps. To further hedge our propane price, at September 30, 2020, we had freight swap contracts on the Baltic Exchange which lock in the freight rate for a specific trade route. These contracts settle monthly through December 2021 with the fair value of these contracts equal to a loss of $1.4 million at September 30, 2020. Divestiture Contingent Consideration In addition to the derivatives described above, our right to receive contingent consideration in conjunction with the sale of our North Louisiana assets was determined to be a derivative financial instrument that is not designated as a hedging instrument. The contingent consideration of up to $90.0 million is based on future achievement of natural gas and oil prices based on published indexes and realized NGLs prices of the buyer from July through December 2020 and for the years 2021, 2022 and 2023. All changes in the fair value are recognized as a gain or loss in earnings in the period they occur in derivative fair value income or loss in our consolidated statements of operations. Derivative Assets and Liabilities The combined fair value of derivatives included in the accompanying consolidated balance sheets as of September 30, 2020 and December 31, 2019 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, 2020 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 $ 10,083 $ (9,159 ) $ 924 –three-way collars 680 (680 ) — –basis swaps 6,620 (3,263 ) 3,357 Crude oil –swaps 14,065 (13,566 ) 499 NGLs –C3 propane spread swaps 2,974 (2,974 ) — –C3 propane swaps 101 — 101 –NC4 normal butane swaps 17 (17 ) — −C5 natural gasoline swaps 25 — 25 Freight −swaps 19 (19 ) — Divestiture contingent consideration 15,420 — 15,420 $ 50,004 $ (29,678 ) $ 20,326 September 30, 2020 Gross Amounts of Recognized (Liabilities) Gross Amounts Offset in the Balance Sheet Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (33,359 ) $ 9,159 $ (24,200 ) –swaptions (20,368 ) — (20,368 ) –collars (14,169 ) — (14,169 ) –three-way collars (40,563 ) 680 (39,883 ) –basis swaps (1,220 ) 3,263 2,043 Crude oil –swaps — 13,566 13,566 NGLs –C3 propane spread swaps (3,503 ) 2,974 (529 ) –NC4 normal butane calls — 17 17 Freight –swaps (1,407 ) 19 (1,388 ) $ (114,589 ) $ 29,678 $ (84,911 ) December 31, 2019 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 $ 134,364 $ (2,913 ) $ 131,451 –swaptions — (1,325 ) (1,325 ) –basis swaps 10,766 (1,092 ) 9,674 Crude oil –swaps 3,893 (4,794 ) (901 ) –swaptions — (1,597 ) (1,597 ) –calls — (349 ) (349 ) NGLs –C3 propane spread swaps 1,913 (1,913 ) — –NC4 normal butane swaps 167 — 167 –C5 natural gasoline swaps 60 (127 ) (67 ) Freight –swaps 1,529 (1,028 ) 501 $ 152,692 $ (15,138 ) $ 137,554 December 31, 2019 Gross Amounts of Recognized (Liabilities) Gross Amounts Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (1,657 ) $ 2,913 $ 1,256 –swaptions (2,594 ) 1,325 (1,269 ) –basis swaps (1,371 ) 1,092 (279 ) Crude oil –swaps (4,814 ) 4,794 (20 ) –swaptions (2,254 ) 1,597 (657 ) –calls (349 ) 349 — NGLs –C3 propane spread swaps (16,040 ) 1,913 (14,127 ) –C5 natural gasoline swaps (127 ) 127 — Freight –swaps — 1,028 1,028 $ (29,206 ) $ 15,138 $ (14,068 ) The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands): Derivative Fair Value (Loss) Income Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Commodity swaps $ (91,425 ) $ 60,090 $ 142,413 $ 161,799 Swaptions (14,166 ) 10,358 (15,520 ) 39,451 Three-way collars (20,705 ) — (38,267 ) — Collars (16,893 ) 356 (14,336 ) (3,590 ) Calls (255 ) (224 ) (12 ) (224 ) Basis swaps 15,587 3,448 31,750 7,801 Freight swaps 2,737 648 (4,276 ) 2,953 Divestiture contingent consideration 430 — 430 — Total $ (124,690 ) $ 74,676 $ 102,182 $ 208,190

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2020
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 does 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 for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management’s best estimates of the assumptions market participants would use in determining fair value. Our Level 3 measurements consist of instruments using standard pricing models and other valuation methods that utilize unobservable pricing inputs that are significant to the overall 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; • recorded value of derivative instruments and trading securities; and • our divestiture contract obligation. The need to test long-lived assets can be based on several indicators, including a significant reduction in prices of natural gas, oil and condensate, NGLs, 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 for assets and liabilities measured at fair value, on a recurring basis (in thousands): Fair Value Measurements at September 30, 2020 using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value as of September 30, 2020 Trading securities held in the deferred compensation plans $ 56,859 $ — $ — $ 56,859 Commodity price derivatives –swaps — (9,068 ) — (9,068 ) –collars — (14,169 ) — (14,169 ) –three-way collars — (39,883 ) — (39,883 ) –basis swaps — 4,871 — 4,871 –swaptions — — (20,368 ) (20,368 ) Derivatives–freight swaps — (1,388 ) — (1,388 ) Divestiture contingent consideration — 15,420 — 15,420 Fair Value Measurements at December 31, 2019 using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant Unobservable (Level 3) Total Carrying Value as of December 31, 2019 Trading securities held in the deferred compensation plans $ 62,009 $ — $ — $ 62,009 Commodity price derivatives –swaps — 131,886 — 131,886 –calls — (349 ) — (349 ) –basis swaps — (4,732 ) — (4,732 ) –swaptions — — (4,848 ) (4,848 ) Derivatives–freight swaps — 1,529 — 1,529 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. As of September 30, 2020, a portion of our natural gas derivative instruments contain swaptions where the counterparty has the right, but not the obligation, to enter into a fixed price swap on a pre-determined date. Derivatives in Level 3 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. Subjectivity in the volatility factors utilized can cause a significant change in the fair value measurement of our swaptions. We utilize a range of implied volatilities from 21% to 32% with a weighted average implied volatility of 26%. The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands): As of September 30, 2020 Balance at December 31, 2019 $ (4,848 ) Total losses: Included in earnings (19,124 ) Settlements, net 2,769 Transfers in and/or out of Level 3 835 Balance at September 30, 2020 $ (20,368 ) Divestiture Contingent Consideration. In August 2020, we completed the sale of our North Louisiana assets where we are entitled to receive contingent consideration of up to $ 90 million, based on future achievement of natural gas and oil prices based on published indexes along w ith NGL s prices based on the realized NGL s prices of the buyer. We used an option pricing model to estimate the fair value of the contingent consideration using significant Level 2 inputs that include quoted future commodity prices based on active markets and implied volatility factors. See also Note 4 and Note 11 for additional information. 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 2020, interest and dividends were $114,000 and the mark-to-market adjustment was a gain of $3.2 million compared to interest and dividends of $197,000 and a mark-to-market loss of $361,000 in third quarter 2019. For first nine months 2020 interest and dividends were $385,000 and the mark-to-market adjustment was a gain of $234,000 compared to interest and dividends of $560,000 and a mark-to-market adjustment of a gain of $6.3 million in the same period of 2019. Fair Values – Non-recurring Certain assets are measured at fair value on a non-recurring basis. These assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. 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. As a result of such a proved property review in fourth quarter 2019, we recorded noncash impairment charges to reduce the carrying value of our North Louisiana assets. We calculated the fair value of these assets using a discounted cash flow model which uses Level 3 inputs. There were no proved property impairment charges in first nine months 2019. The following table presents the value of these assets measured at fair value on a nonrecurring basis at the time impairment was recorded (in thousands): Year Ended December 31, 2019 Fair Value Impairment North Louisiana $ 370,500 $ 1,093,531 In first quarter 2020, we recognized additional impairment charges of $77.0 million that reduced the carrying value to the anticipated sales proceeds for our North Louisiana assets which is a market approach using Level 2 inputs. See also Note 4 and Note 14 for additional information. North Louisiana Divestiture. We have recorded a divestiture contract obligation in conjunction with the sale of our North Louisiana assets. The fair value of this obligation was determined as of the closing date using Level 3 inputs based on a probability-weighted forecast that considers historical results, market conditions and various potential development plans of the buyer to arrive at the estimated present value of the future payments. The present value of the future cash payments was determined using a 12 percent discount rate. See also Note 4 and Note 14 for additional information. Leases. As part of our ongoing effort to reduce general and administrative expense due to both the lower commodity price environment and in conjunction with the sale of our North Louisiana assets, we have vacated one floor in our Fort Worth headquarters. We have recorded an impairment related to this lease of $2.0 million which is included in impairment of proved property and other assets in our consolidated statements of operations for third quarter 2020. Fair Values – Reported The following presents the carrying amounts and the fair values of our financial instruments as of September 30, 2020 and December 31, 2019 (in thousands): September 30, 2020 December 31, 2019 Carrying Fair Carrying Fair Assets: Commodity swaps, collars and basis swaps $ 4,906 $ 4,906 $ 137,554 $ 137,554 Divestiture contingent consideration 15,420 15,420 — — Marketable securities (a) 56,859 56,859 62,009 62,009 (Liabilities): Commodity swaps, collars and basis swaps (84,911 ) (84,911 ) (14,068 ) (14,068 ) Bank credit facility (b) (706,000 ) (706,000 ) (477,000 ) (477,000 ) 5.75% senior notes due 2021 (b) (25,496 ) (25,592 ) (374,139 ) (375,909 ) 5.00% senior notes due 2022 (b) (169,589 ) (163,558 ) (511,886 ) (501,582 ) 5.875% senior notes due 2022 (b) (48,528 ) (47,819 ) (297,617 ) (294,757 ) Other senior notes due 2022 (b) (490 ) (482 ) (590 ) (592 ) 5.00% senior notes due 2023 (b) (532,335 ) (505,787 ) (741,531 ) (683,291 ) 4.875% senior notes due 2025 (b) (750,000 ) (676,425 ) (750,000 ) (645,098 ) 9.25% senior notes due 2026 (b) (850,000 ) (873,103 ) — — 5.75% senior subordinated notes due 2021 (b) (19,896 ) (19,477 ) (22,214 ) (21,539 ) 5.00% senior subordinated notes due 2022 (b) (9,730 ) (8,666 ) (19,054 ) (17,011 ) 5.00% senior subordinated notes due 2023 (b) (7,712 ) (7,127 ) (7,712 ) (7,654 ) Deferred compensation plan (c) (84,538 ) (84,538 ) (74,472 ) (74,472 ) (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 to the closing price on the balance sheet date which is a Level 1 input. Our current assets and liabilities include 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, operating lease liabilities and the divestiture contract obligation. Concentrations of Credit Risk As of September 30, 2020, 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 securities are obtained as deemed necessary to limit our risk of loss. Our allowance for uncollectable receivables was $3.0 million at September 30, 2020 and $8.8 million at December 31, 2019. 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 Allowance for Expected Credit Losses. Each reporting period, we assess the recoverability of material receivables using historical data, current market conditions and reasonable and supported forecasts of future economic conditions to determine their expected collectability. The loss given default method is used when, based on management’s judgment, an allowance for expected credit losses should be accrued on a material receivable to reflect the net amount to be collected. See Note 3 for a discussion on adoption of the new accounting standards update on financial instruments-credit losses.

Stock-based Compensation Plans

Stock-based Compensation Plans	9 Months Ended
	Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based Compensation Plans	(13) STOCK-BASED COMPENSATION PLANS Stock-Based Awards We have two active equity-based stock plans; our Amended and Restated 2005 Equity-Based Incentive Compensation Plan, which we refer to as the 2005 Plan and the Amended and Restated 2019 Equity-Based Compensation Plan, which was approved by our stockholders in May 2019 and amended in May 2020. Under these plans, various awards may be issued to non-employee directors and employees pursuant to decisions of the Compensation Committee, which is composed of only non-employee, independent directors. Total Stock-Based Compensation Expense Stock-based compensation represents amortization of restricted stock and performance units. 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 details the allocation of stock-based compensation to functional expense categories (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Direct operating expense $ (74 ) $ 319 $ 810 $ 1,459 Brokered natural gas and marketing expense 324 522 905 1,523 Exploration expense 189 496 891 1,372 General and administrative expense 6,863 8,423 24,071 27,561 Termination costs 2,020 (1 ) 2,020 25 Total stock-based compensation $ 9,322 $ 9,759 $ 28,697 $ 31,940 Stock-Based Awards Restricted Stock Awards . We grant restricted stock units under our equity-based stock compensation plans. These restricted stock units, which we refer to as restricted stock Equity Awards, generally vest over a three-year The Compensation Committee also grants restricted stock to certain employees and non-employee directors of the Board of Directors as part of their compensation. We also grant restricted stock to certain employees for retention purposes. Compensation expense is recognized over the balance of the vesting period, which is typically three years for employee grants and immediate vesting for non-employee directors. In May 2020, vesting for non-employee directors was changed to one year after grant date. All restricted stock awards are issued at prevailing market prices at the time of the grant and the vesting is based upon an employee’s continued employment with us. Prior to vesting, all restricted stock award recipients have the right to vote such stock and receive dividends thereon. Upon grant of these restricted shares, which we refer to as restricted stock Liability Awards, the majority of these shares are generally placed in our deferred compensation plan and, upon vesting, withdrawals are allowed in either cash or in stock. These Liability Awards are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported in deferred compensation plan expense in the accompanying consolidated statements of operations. Historically, we have used authorized but unissued shares of stock when restricted stock is granted. However, we can also utilize treasury shares when available. Stock-Based Performance Units . We grant three types of performance share awards: two based on performance conditions measured against internal debt-adjusted performance metrics (Production Per Share Awards or “PS-PSUs” and Reserve Per Share Awards or “RS-PSUs”) and one based on market conditions measured based on Range’s performance relative to a predetermined peer group (“TSR Awards” or “TSR-PSUs”). Each unit granted represents one share of our common stock. These units are settled in stock and the amount of the payout is based on (1) the vesting percentage, which can be from zero to 200% based on performance achieved and (2) the value of our common stock on the vesting date which is determined by the Compensation Committee. Dividend equivalents may accrue during the performance period and are paid in stock at the end of the performance period. The performance period for the TSR-PSUs is three years. The performance period for the PS/RS-PSUs is based on annual performance targets earned over a three-year Restricted Stock – Equity Awards In first nine months 2020, we granted 4.5 million restricted stock Equity Awards to employees at an average grant date fair value of $3.42 which generally vest over a three-year Restricted Stock – Liability Awards In first nine months 2020, we granted 3.3 million shares of restricted stock Liability Awards as compensation to employees at an average grant date fair value of $3.03 which generally vest over a three-year three-year Restricted Stock Equity Awards Restricted Stock Liability Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2019 2,002,239 $ 12.32 411,126 $ 10.94 Granted 4,462,711 3.42 3,529,686 3.18 Vested (1,788,235 ) 7.08 (2,003,051 ) 4.03 Forfeited (431,201 ) 8.47 (81,570 ) 3.02 Outstanding at September 30, 2020 4,245,514 $ 5.56 1,856,191 $ 3.98 Stock-Based Performance Units Production Per Share and Reserve Per Share Awards (debt-adjusted). The PS-PSUs and RS-PSUs vest at the end of the three-year 2020: Number of Units Weighted Average Grant Date Fair Value Outstanding at December 31, 2019 881,573 $ 11.70 Units granted (a) 777,847 2.33 Vested (b) (101,150 ) 15.32 Forfeited (c) (259,711 ) 2.33 Outstanding at September 30, 2020 1,298,559 $ 5.37 (a) (b) For the PS-PSUs and RS-PSUs awards issued during 2017 the aggregate payout was approximately 150% (c) We recorded PS/RS-PSUs compensation income of $2.3 million in first nine months 2020 compared to expense of $2.3 million in first nine months 2019. TSR Awards. TSR-PSUs granted are earned, or not earned, based on the comparative performance of Range’s common stock measured against a predetermined group of companies in the peer group over a three-year performance period. The fair value of the TSR-PSUs is estimated on the date of grant using a Monte Carlo simulation model which utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award grant and calculates the fair value of the award. The fair value is recognized as stock-based compensation expense over the three-year Nine Months Ended September 30, 2020 2019 Risk-free interest rate 1.4 % 2.4 % Expected annual volatility 65 % 46 % Grant date fair value per unit $ 3.85 $ 11.34 The following is a summary of our non-vested TSR – Units Weighted Average Fair Value Outstanding at December 31, 2019 993,452 $ 19.00 Units granted (a) 610,155 3.85 Vested (b) (278,184 ) 26.12 Forfeited (75,899 ) 26.66 Outstanding at September 30, 2020 1,249,524 $ 9.55 (a) These (b) Includes TSR-PSUs awards issued related to the 2017 performance period where the return on our common stock was in the 60 th th We recorded TSR-PSUs compensation expense of $1.9 million in first nine months 2020 compared to $2.2 million in the same period of 2019. Fair value is amortized over the performance period with no adjustment to the expense recorded for actual targets achieved. Other Post Retirement Benefits Effective fourth quarter 2017, as part of our officer succession plan, we implemented a post retirement benefit plan to assist in providing health care to officers who are active employees (including their spouses) and have met certain age and service requirements. These benefits are not funded in advance and are provided up to age 65 or at the date they become eligible for Medicare, subject to various cost-sharing features. There was approximately $90,000 of estimated prior service costs amortized from accumulated other comprehensive income into general and administrative expense in both the three months ended September 30, 2020 and 2019 and approximately $275,000 amortized in both the nine months ended September 30, 2020 and 2019. Those employees that qualified for this new retirement health care plan were also fully vested in all equity grants. Effective October 2018, officers who qualify for the plan are required to provide reasonable notice of retirement and beginning in 2019 must provide one year of service after the grant date to be fully vested in an equity grant. 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 a mark-to-market loss of $ 6.2 million in third quarter 20 20 compared to a mark-to-market gain of $ 8.9 million in third quarter 201 9 . We recorded a mark-to-market loss of $ 10.3 million in first nine months 2020 compared to a mark-to-market gain of $ 16.4 million in first nine months 2019. The Rabbi Trust held million shares ( 4.4 million of which were vested) of Range stock at September 3 0 , 20 20 compared to 3.2 million shares ( million of which were vested) at December 31, 201 9 .

Exit and Termination Costs

Exit and Termination Costs	9 Months Ended
	Sep. 30, 2020
Restructuring And Related Activities [Abstract]
Exit and Termination Costs	(14) EXIT AND TERMINATION COSTS Exit Costs In August 2020, we sold our North Louisiana assets and retained certain gathering, transportation and processing obligations which extend into 2030. These are contracts where we will not realize any future benefit. The estimated obligations are included in current and long-term divestiture contract obligation in our consolidated balance sheet. The present value of our estimated obligations was recorded as an exit cost which totaled $479.8 million. Also associated with this sale, we agreed to pay a midstream company $28.5 million to reduce our financial obligation related to the minimum volume commitments associated with this asset which was also recorded as an exit cost in third quarter 2020. In second quarter 2020, we negotiated capacity releases on certain transportation pipelines in Pennsylvania effective May Termination Costs In third quarter 2020, we completed the sale of our North Louisiana assets. We recorded $2.5 million of severance costs and stock-based compensation expense associated with this sale. In third quarter 2020, we also announced an additional reduction in our work force as we continue to focus on lowering administrative expenses and recorded $3.7 million of severance costs and stock-based compensation expense related to this reduction in force. In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania and we recorded $1.6 Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Severance costs $ 4,191 $ 819 $ 5,638 $ 3,000 Transportation contract capacity releases (including accretion of discount) 233 — 10,678 — Divestiture contract obligation (including accretion of discount) 486,689 — 486,689 — One-time minimum volume commitment contract payment 28,500 — 28,500 — Stock-based compensation 2,020 — 2,020 25 $ 521,633 $ 819 $ 533,525 $ 3,025 The following details the accrued exit and termination cost liability activity for the nine months ended September 30, 2020 (in thousands): Exit Costs Termination Costs Balance at December 31, 2019 $ — $ 4,692 Accrued severance costs — 5,638 Accrued contract obligations 490,115 — Accretion of discount 7,252 — Payments (959 ) (6,170 ) Balance at September 30, 2020 $ 496,408 $ 4,160

Capital Stock

Capital Stock	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Capital Stock	(15) 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 2019: Nine Months Year Beginning balance 249,630,803 249,510,022 Restricted stock grants 3,390,358 1,186,290 Restricted stock units vested 1,104,596 720,212 Performance stock units issued 279,420 12,747 Performance stock dividends 18,700 — Treasury shares acquired (8,197,662 ) (1,798,468 ) Ending balance 246,226,215 249,630,803 Stock Repurchase Program In October 2019, our Board of Directors authorized a $100.0 million common stock repurchase program. Under this program, we may repurchase shares in open market transactions, from time to time, in accordance with applicable SEC rules and federal securities laws. The following is a schedule of the change in treasury shares for the three and nine months ended September 30, 2020: Three Months Nine Months Beginning balance 10,007,327 1,808,133 Rabbi trust shares distributed/sold (1,532 ) (2,338 ) Shares repurchased — 8,200,000 Ending balance 10,005,795 10,005,795

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	(16) SUPPLEMENTAL CASH FLOW INFORMATION Nine Months Ended September 30, 2020 2019 (in thousands) Net cash provided from operating activities included: Income taxes refunded from taxing authorities $ 343 $ — Interest paid (145,319 ) (151,602 ) Non-cash investing and financing activities included: Increase in asset retirement costs capitalized 4,587 812 Decrease in accrued capital expenditures (38,942 ) (4,424 )

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(17) COMMITMENTS AND CONTINGENCIES Litigation We are the subject of, or party to, a number of pending or threatened legal actions and administrative proceedings arising in the ordinary course of our business including, but not limited to, royalty claims, contract claims and environmental claims. 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. When deemed necessary, we establish reserves for certain legal proceedings. The establishment of a reserve is based on an estimation process that includes the advice of legal counsel and subjective judgment of management. While management believes these reserves to be adequate, it is reasonably possible we could incur additional losses with respect to those matters in which reserves have been established. We will continue to evaluate our litigation on a quarterly basis and will establish and adjust any litigation reserves as appropriate to reflect our assessment of the then current status of litigation. We have incurred and will continue to incur capital, operating and remediation expenditures as a result of environmental laws and regulations. As of September 30, 2020, liabilities for remediation were not material. We are not aware of any environmental claims existing as of September 30, 2020 that have not been provided for or would otherwise have a material impact on our financial position or results of operations. Environmental liabilities normally involve estimates that are subject to revision until final resolution, settlement or remediation occurs. Obligations Following Divestitures Certain contractual obligations were retained by us after our divestiture of our North Louisiana assets. These obligations are primarily related to gathering, processing and transportation agreements including certain minimum volume commitments. For additional information see Note 4 and Note 14. Transportation, Gathering and Processing Commitments We have entered into firm transportation, gathering and processing commitments with various pipeline carriers and midstream companies associated with our Pennsylvania production. The accrued obligations shown below is primarily the contractual obligations retained after the sale of our North Louisiana assets and is not included in total commitments below. The ultimate settlement amount and timing of these accrued obligations cannot be precisely determined. As of September 30, 2020, future minimum transportation, gathering and processing fees are as follows (in thousands): Remainder 2020 $ 212,604 2021 849,807 2022 812,176 2023 779,226 2024 763,965 Thereafter 4,817,605 Total commitments $ 8,235,383 Accrued obligations (see also Note 14) $ 496,408

Costs Incurred for Property Acq

Costs Incurred for Property Acquisition, Exploration and Development	9 Months Ended
	Sep. 30, 2020
Extractive Industries [Abstract]
Costs Incurred for Property Acquisition, Exploration and Development	(18) Costs Incurred for Property Acquisition, Exploration and Development (a) Nine Months Ended September 30, 2020 Year Ended December 31, 2019 (in thousands) Acquisitions: Acreage purchases $ 11,864 $ 57,324 Development 283,354 666,984 Exploration: Expense 22,296 35,117 Stock-based compensation expense 895 1,566 Gas gathering facilities: Development 2,764 3,583 Subtotal 321,173 764,574 Asset retirement obligations 4,587 11,193 Total costs incurred $ 325,760 $ 775,767 (a) Includes costs incurred whether capitalized or expensed.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
New Accounting Standards	Not Yet Adopted None that are expected to have a material impact on our financial statements. Recently Adopted Financial Instruments – Credit Losses In September 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking “expected loss” model as opposed to the current “incurred loss” model. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements. Fair Value Measurement In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements. Lease Accounting Standard In February 2016, an accounting standards update was issued that requires an entity to recognize a right-of-use (“ROU”) asset and lease liability for all leases. Classification of leases as either a finance or operating lease determines the recognition, measurement and presentation of expenses. This accounting standards update also required certain quantitative and qualitative disclosures about leasing arrangements. The new standard was effective for us in first quarter 2019 and we adopted the new standard using a modified retrospective approach, with the date of initial application effective on January 1, 2019. Consequently, upon transition, we recognized a ROU asset (or operating lease right-of-use asset) and a lease liability with no retained earnings impact. Our adoption did not have a material impact on our consolidated balance sheet as of January 1, 2019, with the primary impact relating to the recognition of ROU assets and operating lease liabilities for operating leases which represents approximately a 1% change to total assets and total liabilities.

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue by Identified Revenue Stream	Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands): Three Months Ended September Nine Months Ended September 30, 2020 2019 2020 2019 Natural gas sales $ 211,638 $ 284,980 $ 679,094 $ 1,063,323 NGLs sales 149,263 143,195 416,885 508,035 Oil sales 20,652 46,579 66,928 138,629 Total natural gas, NGLs and oil sales 381,553 474,754 1,162,907 1,709,987 Sales of purchased natural gas 39,180 70,404 94,364 293,209 Sales of purchased NGLs 1,084 (183 ) 3,230 1,425 Other marketing revenue 2,218 2,794 7,128 9,200 Total $ 424,035 $ 547,769 $ 1,267,629 $ 2,013,821

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Tax (Benefit) Expense	We evaluate and update our annual effective income tax rate on a quarterly basis based on current and forecasted operating results and tax laws. Consequently, based upon the mix and timing of our actual earnings compared to annual projections, our effective tax rate may vary quarterly and may make comparisons not meaningful (“NM”). The effective income tax rate is influenced by a variety of factors including geographic sources and relative magnitude of these sources of income. Income taxes for discrete items are computed and recorded in the period that a specific transaction occurs. For the three months and nine months ended September 30, 2020 and 2019, our overall effective tax rate was different than the federal statutory rate due primarily to state income taxes, equity compensation, valuation allowances and other tax items. Our income tax benefit is summarized below (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Income tax benefit $ (105,251 ) $ (47,219 ) $ (98,313 ) $ (1,432 ) Effective tax rate 13.4 % NM 12.6 % NM

Income (Loss) Per Common Share

Income (Loss) Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Computations of Basic and Diluted Income (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 sets 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, 2020 2019 2020 2019 Net (loss) income, as reported $ (680,048 ) $ (27,581 ) $ (681,642 ) $ 89,023 Participating earnings (a) — (67 ) — (1,105 ) Basic net (loss) income attributed to common shareholders (680,048 ) (27,648 ) (681,642 ) 87,918 Reallocation of participating earnings (a) — — — 3 Diluted net (loss) income attributed to common shareholders $ (680,048 ) $ (27,648 ) $ (681,642 ) $ 87,921 Net (loss) income per common share: Basic $ (2.83 ) $ (0.11 ) $ (2.82 ) $ 0.35 Diluted $ (2.83 ) $ (0.11 ) $ (2.82 ) $ 0.35 (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 provides a reconciliation of basic weighted average common shares outstanding to diluted weighted average common shares outstanding (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Weighted average common shares outstanding – basic 239,895 248,082 241,770 247,878 Effect of dilutive securities: Director and employee restricted stock and performance based equity awards — — — 945 Weighted average common shares outstanding – diluted 239,895 248,082 241,770 248,823

Capitalized Costs and Accumul_2

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Tables)	9 Months Ended
	Sep. 30, 2020
Extractive Industries [Abstract]
Capitalized Costs and Accumulated Depreciation, Depletion and Amortization	September 30, December 31, (in thousands) Natural gas properties: Properties subject to depletion $ 8,784,788 $ 9,345,557 Unproved properties 862,113 868,180 Total 9,646,901 10,213,737 Accumulated depletion and depreciation (3,975,930 ) (4,172,702 ) Net capitalized costs $ 5,670,971 $ 6,041,035 (a)

Indebtedness (Tables)

Indebtedness (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Debt Outstanding	We had the following debt outstanding as of the dates shown below (bank debt interest rate at September 30, 2020 is shown parenthetically). No interest was capitalized during the nine months ended September 30, 2020 or the year ended December 31, 2019 (in thousands). September 30, 2020 December 31, 2019 Bank debt ( 2.2% $ 706,000 $ 477,000 Senior notes: 4.875% senior notes due 2025 750,000 750,000 5.00% senior notes due 2023 532,335 741,531 5.00% senior notes due 2022 169,589 511,886 5.75% senior notes due 2021 25,496 374,139 5.875% senior notes due 2022 48,528 297,617 9.25% senior notes due 2026 850,000 — Other senior notes due 2022 490 590 Total senior notes 2,376,438 2,675,763 Senior subordinated notes: 5.00% senior subordinated notes due 2023 7,712 7,712 5.00% senior subordinated notes due 2022 9,730 19,054 5.75% senior subordinated notes due 2021 19,896 22,214 Total senior subordinated notes 37,338 48,980 Total debt 3,119,776 3,201,743 Unamortized premium 525 3,013 Unamortized debt issuance costs (32,835 ) (31,819 ) Total debt net of debt issuance costs 3,087,466 3,172,937 Less current maturities of long-term debt (a) (45,334 ) — Total long-term debt $ 3,042,132 $ 3,172,937 (a)

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2020
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, 2020 and the year ended December 31, 2019 is as follows (in thousands): Nine Months Ended September 30, 2020 Year Ended December 31, 2019 Beginning of period $ 251,076 $ 312,754 Liabilities incurred 1,890 4,063 Acquisitions 123 — Liabilities settled (3,068 ) (5,953 ) Disposition of wells (176,747 ) (82,576 ) Accretion expense 6,207 15,658 Change in estimate 2,573 7,130 End of period 82,054 251,076 Less current portion (2,103 ) (2,393 ) Long-term asset retirement obligations $ 79,951 $ 248,683

Derivative Activities (Tables)

Derivative Activities (Tables)	9 Months Ended
	Sep. 30, 2020
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, 2020, excluding our basis and freight swaps and divestiture contingent consideration which are discussed separately below: Period Contract Type Volume Hedged Weighted Average Hedge Price Swap Sold Put Floor Ceiling Natural Gas (1) 2020 Swaps 1,133,587 Mmbtu/day $ 2.63 2021 Swaps 510,000 Mmbtu/day $ 2.77 2020 Collars 5,041 Mmbtu/day $ 2.00 $ 2.50 January – October 2021 Collars 342,237 Mmbtu/day $ 2.51 $ 3.00 2020 Three-way Collars 79,891 Mmbtu/day $ 2.23 $ 2.58 $ 3.19 2021 Three-way Collars 240,000 Mmbtu/day $ 1.99 $ 2.33 $ 2.60 Crude Oil 2020 Swaps 6,000 bbls/day $ 58.02 2021 Swaps 1,000 bbls/day $ 55.00 NGLs (C3-Propane) 2020 Swaps 6,000 bbls/day $ 0.51/gallon NGLs (NC4-Normal Butane) 2020 Swaps 1,000 bbls/day $ 0.60/gallon NGLs (C5-Natural Gasoline) 2020 Swaps 2,000 bbls/day $ 0.89/gallon ( 1 ) We also sold natural gas call swaptions of 140,000 Mmbtu/day for 2021 at a weighted average price of $2.88. In addition, we sold natural gas call swaptions of 280,000 bbls per day for 2022 at a weighted average price of $2.81.
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, 2020 and December 31, 2019 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, 2020 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 $ 10,083 $ (9,159 ) $ 924 –three-way collars 680 (680 ) — –basis swaps 6,620 (3,263 ) 3,357 Crude oil –swaps 14,065 (13,566 ) 499 NGLs –C3 propane spread swaps 2,974 (2,974 ) — –C3 propane swaps 101 — 101 –NC4 normal butane swaps 17 (17 ) — −C5 natural gasoline swaps 25 — 25 Freight −swaps 19 (19 ) — Divestiture contingent consideration 15,420 — 15,420 $ 50,004 $ (29,678 ) $ 20,326 September 30, 2020 Gross Amounts of Recognized (Liabilities) Gross Amounts Offset in the Balance Sheet Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (33,359 ) $ 9,159 $ (24,200 ) –swaptions (20,368 ) — (20,368 ) –collars (14,169 ) — (14,169 ) –three-way collars (40,563 ) 680 (39,883 ) –basis swaps (1,220 ) 3,263 2,043 Crude oil –swaps — 13,566 13,566 NGLs –C3 propane spread swaps (3,503 ) 2,974 (529 ) –NC4 normal butane calls — 17 17 Freight –swaps (1,407 ) 19 (1,388 ) $ (114,589 ) $ 29,678 $ (84,911 ) December 31, 2019 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 $ 134,364 $ (2,913 ) $ 131,451 –swaptions — (1,325 ) (1,325 ) –basis swaps 10,766 (1,092 ) 9,674 Crude oil –swaps 3,893 (4,794 ) (901 ) –swaptions — (1,597 ) (1,597 ) –calls — (349 ) (349 ) NGLs –C3 propane spread swaps 1,913 (1,913 ) — –NC4 normal butane swaps 167 — 167 –C5 natural gasoline swaps 60 (127 ) (67 ) Freight –swaps 1,529 (1,028 ) 501 $ 152,692 $ (15,138 ) $ 137,554 December 31, 2019 Gross Amounts of Recognized (Liabilities) Gross Amounts Net Amounts of (Liabilities) Presented in the Balance Sheet Derivative (liabilities): Natural gas –swaps $ (1,657 ) $ 2,913 $ 1,256 –swaptions (2,594 ) 1,325 (1,269 ) –basis swaps (1,371 ) 1,092 (279 ) Crude oil –swaps (4,814 ) 4,794 (20 ) –swaptions (2,254 ) 1,597 (657 ) –calls (349 ) 349 — NGLs –C3 propane spread swaps (16,040 ) 1,913 (14,127 ) –C5 natural gasoline swaps (127 ) 127 — Freight –swaps — 1,028 1,028 $ (29,206 ) $ 15,138 $ (14,068 )
Effects of Derivatives on Consolidated Statements of Operations	The effects of our derivatives on our consolidated statements of operations are summarized below (in thousands): Derivative Fair Value (Loss) Income Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Commodity swaps $ (91,425 ) $ 60,090 $ 142,413 $ 161,799 Swaptions (14,166 ) 10,358 (15,520 ) 39,451 Three-way collars (20,705 ) — (38,267 ) — Collars (16,893 ) 356 (14,336 ) (3,590 ) Calls (255 ) (224 ) (12 ) (224 ) Basis swaps 15,587 3,448 31,750 7,801 Freight swaps 2,737 648 (4,276 ) 2,953 Divestiture contingent consideration 430 — 430 — Total $ (124,690 ) $ 74,676 $ 102,182 $ 208,190

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
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 for assets and liabilities measured at fair value, on a recurring basis (in thousands): Fair Value Measurements at September 30, 2020 using: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Carrying Value as of September 30, 2020 Trading securities held in the deferred compensation plans $ 56,859 $ — $ — $ 56,859 Commodity price derivatives –swaps — (9,068 ) — (9,068 ) –collars — (14,169 ) — (14,169 ) –three-way collars — (39,883 ) — (39,883 ) –basis swaps — 4,871 — 4,871 –swaptions — — (20,368 ) (20,368 ) Derivatives–freight swaps — (1,388 ) — (1,388 ) Divestiture contingent consideration — 15,420 — 15,420 Fair Value Measurements at December 31, 2019 using: Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant Unobservable (Level 3) Total Carrying Value as of December 31, 2019 Trading securities held in the deferred compensation plans $ 62,009 $ — $ — $ 62,009 Commodity price derivatives –swaps — 131,886 — 131,886 –calls — (349 ) — (349 ) –basis swaps — (4,732 ) — (4,732 ) –swaptions — — (4,848 ) (4,848 ) Derivatives–freight swaps — 1,529 — 1,529
Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy	We utilize a range of implied volatilities from 21% to 32% with a weighted average implied volatility of 26%. The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands): As of September 30, 2020 Balance at December 31, 2019 $ (4,848 ) Total losses: Included in earnings (19,124 ) Settlements, net 2,769 Transfers in and/or out of Level 3 835 Balance at September 30, 2020 $ (20,368 )
Value of Assets Measured at Fair Value on Nonrecurring Basis	The following table presents the value of these assets measured at fair value on a nonrecurring basis at the time impairment was recorded (in thousands): Year Ended December 31, 2019 Fair Value Impairment North Louisiana $ 370,500 $ 1,093,531
Carrying Amounts and Fair Values of Financial Instruments	The following presents the carrying amounts and the fair values of our financial instruments as of September 30, 2020 and December 31, 2019 (in thousands): September 30, 2020 December 31, 2019 Carrying Fair Carrying Fair Assets: Commodity swaps, collars and basis swaps $ 4,906 $ 4,906 $ 137,554 $ 137,554 Divestiture contingent consideration 15,420 15,420 — — Marketable securities (a) 56,859 56,859 62,009 62,009 (Liabilities): Commodity swaps, collars and basis swaps (84,911 ) (84,911 ) (14,068 ) (14,068 ) Bank credit facility (b) (706,000 ) (706,000 ) (477,000 ) (477,000 ) 5.75% senior notes due 2021 (b) (25,496 ) (25,592 ) (374,139 ) (375,909 ) 5.00% senior notes due 2022 (b) (169,589 ) (163,558 ) (511,886 ) (501,582 ) 5.875% senior notes due 2022 (b) (48,528 ) (47,819 ) (297,617 ) (294,757 ) Other senior notes due 2022 (b) (490 ) (482 ) (590 ) (592 ) 5.00% senior notes due 2023 (b) (532,335 ) (505,787 ) (741,531 ) (683,291 ) 4.875% senior notes due 2025 (b) (750,000 ) (676,425 ) (750,000 ) (645,098 ) 9.25% senior notes due 2026 (b) (850,000 ) (873,103 ) — — 5.75% senior subordinated notes due 2021 (b) (19,896 ) (19,477 ) (22,214 ) (21,539 ) 5.00% senior subordinated notes due 2022 (b) (9,730 ) (8,666 ) (19,054 ) (17,011 ) 5.00% senior subordinated notes due 2023 (b) (7,712 ) (7,127 ) (7,712 ) (7,654 ) Deferred compensation plan (c) (84,538 ) (84,538 ) (74,472 ) (74,472 ) (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 to 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, 2020
Allocation of Stock-Based Compensation by Functional Category	The following details the allocation of stock-based compensation to functional expense categories (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Direct operating expense $ (74 ) $ 319 $ 810 $ 1,459 Brokered natural gas and marketing expense 324 522 905 1,523 Exploration expense 189 496 891 1,372 General and administrative expense 6,863 8,423 24,071 27,561 Termination costs 2,020 (1 ) 2,020 25 Total stock-based compensation $ 9,322 $ 9,759 $ 28,697 $ 31,940
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, 2020: Restricted Stock Equity Awards Restricted Stock Liability Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Outstanding at December 31, 2019 2,002,239 $ 12.32 411,126 $ 10.94 Granted 4,462,711 3.42 3,529,686 3.18 Vested (1,788,235 ) 7.08 (2,003,051 ) 4.03 Forfeited (431,201 ) 8.47 (81,570 ) 3.02 Outstanding at September 30, 2020 4,245,514 $ 5.56 1,856,191 $ 3.98
Schedule of Share Based Payment Award Performance Stock Awards Valuation Assumptions	The following assumptions were used to estimate the fair value of TSR-PSUs granted during first nine months 2020 and 2019: Nine Months Ended September 30, 2020 2019 Risk-free interest rate 1.4 % 2.4 % Expected annual volatility 65 % 46 % Grant date fair value per unit $ 3.85 $ 11.34
Performance-based PS-PSUs and RS-PSUs
Summary of Non-Vested Awards Activities	The following is a summary of our non-vested PS/RS-PSUs awards outstanding at September 30, Number of Units Weighted Average Grant Date Fair Value Outstanding at December 31, 2019 881,573 $ 11.70 Units granted (a) 777,847 2.33 Vested (b) (101,150 ) 15.32 Forfeited (c) (259,711 ) 2.33 Outstanding at September 30, 2020 1,298,559 $ 5.37 (a) (b) For the PS-PSUs and RS-PSUs awards issued during 2017 the aggregate payout was approximately 150% (c)
Performance Based TSR - PSUs
Summary of Non-Vested Awards Activities	The following is a summary of our non-vested TSR – Units Weighted Average Fair Value Outstanding at December 31, 2019 993,452 $ 19.00 Units granted (a) 610,155 3.85 Vested (b) (278,184 ) 26.12 Forfeited (75,899 ) 26.66 Outstanding at September 30, 2020 1,249,524 $ 9.55 (a) These (b) Includes TSR-PSUs awards issued related to the 2017 performance period where the return on our common stock was in the 60 th th

Exit and Termination Costs (Tab

Exit and Termination Costs (Tables)	9 Months Ended
	Sep. 30, 2020
Restructuring And Related Activities [Abstract]
Summary of Exit and Termination Costs	The following summarizes our exit and termination costs for the three and nine months ended September 30, 2020 and 2019 (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 Severance costs $ 4,191 $ 819 $ 5,638 $ 3,000 Transportation contract capacity releases (including accretion of discount) 233 — 10,678 — Divestiture contract obligation (including accretion of discount) 486,689 — 486,689 — One-time minimum volume commitment contract payment 28,500 — 28,500 — Stock-based compensation 2,020 — 2,020 25 $ 521,633 $ 819 $ 533,525 $ 3,025
Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet	The following details the accrued exit and termination cost liability activity for the nine months ended September 30, 2020 (in thousands): Exit Costs Termination Costs Balance at December 31, 2019 $ — $ 4,692 Accrued severance costs — 5,638 Accrued contract obligations 490,115 — Accretion of discount 7,252 — Payments (959 ) (6,170 ) Balance at September 30, 2020 $ 496,408 $ 4,160

Capital Stock (Tables)

Capital Stock (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Schedule of Changes in Number of Common Shares Outstanding	The following is a schedule of changes in the number of common shares outstanding since the beginning of 2019: Nine Months Year Beginning balance 249,630,803 249,510,022 Restricted stock grants 3,390,358 1,186,290 Restricted stock units vested 1,104,596 720,212 Performance stock units issued 279,420 12,747 Performance stock dividends 18,700 — Treasury shares acquired (8,197,662 ) (1,798,468 ) Ending balance 246,226,215 249,630,803
Schedule of Change in Treasury Shares	The following is a schedule of the change in treasury shares for the three and nine months ended September 30, 2020: Three Months Nine Months Beginning balance 10,007,327 1,808,133 Rabbi trust shares distributed/sold (1,532 ) (2,338 ) Shares repurchased — 8,200,000 Ending balance 10,005,795 10,005,795

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Nine Months Ended September 30, 2020 2019 (in thousands) Net cash provided from operating activities included: Income taxes refunded from taxing authorities $ 343 $ — Interest paid (145,319 ) (151,602 ) Non-cash investing and financing activities included: Increase in asset retirement costs capitalized 4,587 812 Decrease in accrued capital expenditures (38,942 ) (4,424 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Transportation Fees Due	We have entered into firm transportation, gathering and processing commitments with various pipeline carriers and midstream companies associated with our Pennsylvania production. The accrued obligations shown below is primarily the contractual obligations retained after the sale of our North Louisiana assets and is not included in total commitments below. The ultimate settlement amount and timing of these accrued obligations cannot be precisely determined. As of September 30, 2020, future minimum transportation, gathering and processing fees are as follows (in thousands): Remainder 2020 $ 212,604 2021 849,807 2022 812,176 2023 779,226 2024 763,965 Thereafter 4,817,605 Total commitments $ 8,235,383 Accrued obligations (see also Note 14) $ 496,408

Costs Incurred for Property A_2

Costs Incurred for Property Acquisition, Exploration and Development (Tables)	9 Months Ended
	Sep. 30, 2020
Extractive Industries [Abstract]
Costs Incurred for Property Acquisition, Exploration and Development	Nine Months Ended September 30, 2020 Year Ended December 31, 2019 (in thousands) Acquisitions: Acreage purchases $ 11,864 $ 57,324 Development 283,354 666,984 Exploration: Expense 22,296 35,117 Stock-based compensation expense 895 1,566 Gas gathering facilities: Development 2,764 3,583 Subtotal 321,173 764,574 Asset retirement obligations 4,587 11,193 Total costs incurred $ 325,760 $ 775,767 (a) Includes costs incurred whether capitalized or expensed.

New Accounting Standards - Addi

New Accounting Standards - Additional Information (Detail)	Jan. 01, 2019
Accounting Standards Update 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Impact of lease accounting standard recognition to total assets and total liabilities	1.00%

Dispositions - Additional Infor

Dispositions - Additional Information (Detail)	1 Months Ended	3 Months Ended				6 Months Ended		9 Months Ended
	Aug. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)a	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets		$ (9,230,000)		$ (36,341,000)				$ 112,443,000	$ (30,663,000)
Proceeds from disposal of assets								246,083,000	$ 784,527,000
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		(1,100,000)		117,000		$ (833,000)	$ (187,000)
Proceeds from sale of oil and gas properties		11,000		161,000		$ 71,000	$ 366,000
North Louisiana
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets	$ (8,100,000)
Fair value of total consideration for sale	260,000,000
Proceeds from disposal of assets	245,000,000
Divestiture fee obligation	479,800,000
Unrealized loss for novated derivatives								12,100,000
North Louisiana | Contingent Consideration
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimated fair value of contingent consideration	15,000,000	$ 15,000,000						15,000,000
North Louisiana | Contingent Consideration | Maximum
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Potential contractual payout of contingent consideration	$ 90,000,000							$ 90,000,000
Pennsylvania
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets				36,500,000	$ 5,900,000
Proceeds from sale of oil and gas properties				$ 750,000,000	$ 34,000,000
Percentage of royalty disposed				2.50%					2.50%
Pennsylvania | Natural Gas and Oil Properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of acres sold | a					20,000
Northwest Pennsylvania
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets			$ 122,500,000
Proceeds from sale of oil and gas properties			$ 1,000,000

Revenues from Contracts with _3

Revenues from Contracts with Customers - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)Stream	Dec. 31, 2019USD ($)
Disaggregation of Revenue [Line Items]
Number of revenue streams | Stream	3
Revenue Contract with Customer
Disaggregation of Revenue [Line Items]
Accounts receivable | $	$ 162.9	$ 237

Revenues from Contracts with _4

Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total Revenue	$ 424,035	$ 547,769	$ 1,267,629	$ 2,013,821
Natural Gas, NGLs and Oil Sales
Disaggregation of Revenue [Line Items]
Total Revenue	381,553	474,754	1,162,907	1,709,987
Natural Gas, NGLs and Oil Sales | Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	211,638	284,980	679,094	1,063,323
Natural Gas, NGLs and Oil Sales | NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	149,263	143,195	416,885	508,035
Natural Gas, NGLs and Oil Sales | Oil sales
Disaggregation of Revenue [Line Items]
Total Revenue	20,652	46,579	66,928	138,629
Brokered Natural Gas, Marketing and Other
Disaggregation of Revenue [Line Items]
Total Revenue	42,482	73,015	104,722	303,834
Brokered Natural Gas, Marketing and Other | Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	39,180	70,404	94,364	293,209
Brokered Natural Gas, Marketing and Other | NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	1,084	(183)	3,230	1,425
Brokered Natural Gas, Marketing and Other | Other marketing revenue
Disaggregation of Revenue [Line Items]
Total Revenue	$ 2,218	$ 2,794	$ 7,128	$ 9,200

Income Taxes - Income Tax (Bene

Income Taxes - Income Tax (Benefit) Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax benefit	$ (105,251)	$ (47,219)	$ (98,313)	$ (1,432)
Effective tax rate	13.40%		12.60%

Income (Loss) Per Common Shar_2

Income (Loss) Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended						9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share Reconciliation [Abstract]
Net (loss) income		$ (680,048)	$ (146,569)	$ 144,975	$ (27,581)	$ 115,185	$ 1,419	$ (681,642)	$ 89,023
Participating earnings	[1]	0			(67)			0	(1,105)
Basic net (loss) income attributed to common shareholders		(680,048)			(27,648)			(681,642)	87,918
Reallocation of participating earnings	[1]	0			0			0	3
Diluted net (loss) income attributed to common shareholders		$ (680,048)			$ (27,648)			$ (681,642)	$ 87,921
Net (loss) income per common share:
Basic		$ (2.83)			$ (0.11)			$ (2.82)	$ 0.35
Diluted		$ (2.83)			$ (0.11)			$ (2.82)	$ 0.35
[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.

Income (Loss) Per Common Shar_3

Income (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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Weighted Average Number Of Shares Outstanding [Abstract]
Weighted average common shares outstanding – basic	239,895	248,082	241,770	247,878
Effect of dilutive securities:
Director and employee restricted stock and performance based equity awards	0	0	0	945
Weighted average common shares outstanding – diluted	239,895	248,082	241,770	248,823

Income (Loss) Per Common Shar_4

Income (Loss) Per Common Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity Grants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation				1.6
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	6.2	3.3	5.3	3.1

Capitalized Costs and Accumul_3

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Natural gas properties:
Properties subject to depletion	[1]	$ 8,784,788	$ 9,345,557
Unproved properties	[1]	862,113	868,180
Total	[1]	9,646,901	10,213,737
Accumulated depletion and depreciation	[1]	(3,975,930)	(4,172,702)
Natural gas and oil properties, successful efforts method, net	[1]	$ 5,670,971	$ 6,041,035
[1]

Indebtedness - Additional Infor

Indebtedness - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest capitalized during the period	$ 0	$ 0

Indebtedness - Debt Outstanding

Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior notes		$ 2,376,438	$ 2,675,763
Senior subordinated notes		37,338	48,980
Total debt		3,119,776	3,201,743
Unamortized premium		525	3,013
Unamortized debt issuance costs		(32,835)	(31,819)
Total debt net of debt issuance costs		3,087,466	3,172,937
Less current maturities of long-term debt	[1]	(45,334)	0
Total long-term debt		3,042,132	3,172,937
2.2% Bank Debt | Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt (2.2%)		706,000	477,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Senior notes		750,000	750,000
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes		532,335	741,531
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes		169,589	511,886
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior notes		25,496	374,139
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes		48,528	297,617
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Senior notes		850,000	0
Other Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes		490	590
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Senior subordinated notes		7,712	7,712
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Senior subordinated notes		9,730	19,054
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Senior subordinated notes		$ 19,896	$ 22,214
[1]	As of September 30, 2020, current maturities includes $45.4 million principal amount of our 5.75% senior and senior subordinated notes due 2021

Indebtedness - Debt Outstandi_2

Indebtedness - Debt Outstanding (Parenthetical) (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Aug. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jan. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Current maturities of long-term debt	[1]	$ 45,334					$ 0
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate on notes		4.875%					4.875%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes		5.00%		5.00%	5.00%		5.00%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		5.00%		5.00%	5.00%		5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes		5.75%	5.75%	5.75%		5.75%	5.75%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		5.875%		5.875%	5.875%	5.875%	5.875%
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Interest rate on notes		9.25%					9.25%
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes		5.00%					5.00%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes		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%
5.75% senior notes and subordinated senior notes due 2021
Debt Instrument [Line Items]
Current maturities of long-term debt		$ 45,400
Notes Payable to Banks | 2.2% Bank Debt
Debt Instrument [Line Items]
Bank debt percentage		2.20%					2.20%
[1]	As of September 30, 2020, current maturities includes $45.4 million principal amount of our 5.75% senior and senior subordinated notes due 2021

Indebtedness - Bank Debt - Addi

Indebtedness - Bank Debt - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)CommercialBank	Sep. 30, 2019	Sep. 30, 2020USD ($)CommercialBank	Sep. 30, 2019	Dec. 31, 2019USD ($)
Debt Instrument [Line Items]
Bank debt	$ 696,172,000		$ 696,172,000		$ 464,319,000
Bank Credit Facility
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		$ 3,000,000,000
Percentage holding of commercial banks, Maximum	7.00%		7.00%
Number of commercial banks included in current bank group | CommercialBank	26		26
Maturity date of loan			Apr. 13, 2023
Bank commitments	$ 2,400,000,000		$ 2,400,000,000
Bank debt	706,000,000		706,000,000
Undrawn letters of credit	332,000,000		332,000,000
Borrowing capacity available under the commitment amount	$ 1,400,000,000		$ 1,400,000,000
Weighted average interest rate on the bank credit facility	2.40%	3.80%	2.70%	4.00%
Annual rate of commitment fee paid on the undrawn balance			0.30%
Increase in the applicable margin basis points on drawn facility balances			50.00%
Bank Credit Facility | Alternate Base Rate
Debt Instrument [Line Items]
Interest rate margin			1.00%
Bank Credit Facility | LIBOR Rate
Debt Instrument [Line Items]
Interest rate margin			2.00%
Bank Credit Facility | Minimum [Member]
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.30%
Bank Credit Facility | Minimum [Member] | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	0.25%		0.25%
Bank Credit Facility | Minimum [Member] | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Bank Credit Facility | Maximum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance			0.375%
Bank Credit Facility | Maximum | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%		1.25%
Bank Credit Facility | Maximum | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	2.25%		2.25%

Indebtedness - New Senior Notes

Indebtedness - New Senior Notes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
	Sep. 30, 2020	Jan. 31, 2020	Sep. 30, 2020	Aug. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior notes	$ 2,376,438		$ 2,376,438				$ 2,675,763
Senior subordinated notes	37,338		37,338				$ 48,980
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Aggregate principal amount	$ 300,000	$ 550,000	$ 300,000
Interest rate on notes	9.25%	9.25%	9.25%				0.00%
Debt instrument maturity year		2026
Net proceeds after underwriting expenses	$ 295,000	$ 541,400	$ 295,000
Net proceeds after commissions	$ 5,000	$ 8,600	$ 5,000
Maximum redemption price of notes as percentage of principal amount			100.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%	5.75%	5.75%		5.75%
Repayments of senior notes	$ 12,100	$ 324,100
Senior notes	$ 25,496		$ 25,496				$ 374,139
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.875%	5.875%	5.875%		5.875%	5.875%	5.875%
Repayments of senior notes	$ 65,100	$ 175,900
Senior notes	$ 48,528		$ 48,528				$ 297,617
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%		5.75%		5.75%		5.75%
Repayments of senior notes	$ 1,200
Senior subordinated notes	$ 19,896		$ 19,896				$ 22,214
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%
Senior notes	$ 291,000		$ 291,000
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%
Senior notes	$ 122,300		$ 122,300
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%
Senior subordinated notes	$ 8,300		$ 8,300

Indebtedness - Early Extinguish

Indebtedness - Early Extinguishment of Debt - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended				9 Months Ended
	Sep. 30, 2020	Jan. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Aug. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Repayment of notes by early cash tender premium amount	$ 5,300,000	$ 15,100,000	$ 5,300,000				$ 5,300,000
Early cash tender offer period	10 days	10 days
Gain (Loss) on early extinguishment of debt			(7,821,000)			$ 2,985,000	$ 14,093,000	$ 2,985,000
5.75% Senior Notes Due 2021 and 5.0% senior notes due 2022 and 5.875% Senior Notes Due 2022 and 5.75% senior subordinated notes due 2021
Debt Instrument [Line Items]
Cash tender principal amount	$ 500,000
Gain (Loss) on early extinguishment of debt			8,000,000
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 760,000,000,000	$ 349,000,000,000
Interest rate on notes	5.75%		5.75%	5.75%			5.75%			5.75%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,000,000
Interest rate on notes	5.00%		5.00%				5.00%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 66,000	$ 2,200,000	$ 5,800,000
Interest rate on notes	5.875%	5.875%	5.875%	5.875%	5.875%		5.875%			5.875%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,000,000
Interest rate on notes	5.00%		5.00%				5.00%
5.00% Senior Notes Due 2022, 5.875% Senior Notes Due 2022 and 5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Gain (Loss) on early extinguishment of debt			$ 200,000	$ 9,000,000	$ 30,400,000
5.75% Senior Notes Due 2021 and 5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Cash tender principal amount		$ 500,000,000
Gain (Loss) on early extinguishment of debt					(17,500,000)
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount				$ 1,800,000	$ 48,500,000
Interest rate on notes	5.00%		5.00%	5.00%	5.00%		5.00%			5.00%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Extinguishment of debt, principal amount				$ 30,200,000	$ 56,600,000
Interest rate on notes	5.00%		5.00%	5.00%	5.00%		5.00%			5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount				$ 12,500,000
Interest rate on notes	5.75%	5.75%	5.75%	5.75%			5.75%		5.75%	5.75%

Indebtedness - Senior Subordina

Indebtedness - Senior Subordinated Notes - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020
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, 2020
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 bank credit facility 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, 2020.
Minimum [Member]
Debt Instrument [Line Items]
Ratio of debt to EBITDAX	250.00%
Current ratio	100.00%
Present value of proved reserves to total debt	150.00%

Asset Retirement Obligations -

Asset Retirement Obligations - Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Asset Retirement Obligation [Abstract]
Beginning of period	$ 251,076	$ 312,754
Liabilities incurred	1,890	4,063
Acquisitions	123	0
Liabilities settled	(3,068)	(5,953)
Disposition of wells	(176,747)	(82,576)
Accretion expense	6,207	15,658
Change in estimate	2,573	7,130
End of period	82,054	251,076
Less current portion	(2,103)	(2,393)
Long-term asset retirement obligations	$ 79,951	$ 248,683

Derivative Activities - Additio

Derivative Activities - Additional Information (Detail)	1 Months Ended	9 Months Ended
	Aug. 31, 2020USD ($)	Sep. 30, 2020USD ($)MMBTUbbl
North Louisiana | Maximum | Contingent Consideration
Derivative [Line Items]
Potential contractual payout of contingent consideration	$ 90,000,000	$ 90,000,000
Derivatives Excluding Basis Swaps and Freight Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net		(83,500,000)
Commodity | Natural Gas Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net		$ 5,400,000
Volume Hedged | MMBTU		81,745,000
Commodity | Propane Spread Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net		$ (529,000)
Volume Hedged | bbl		312,500
Freight | Swaps | Level 2
Derivative [Line Items]
Derivative assets liabilities at fair value net		$ (1,400,000)

Derivative Activities - Derivat

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)	Sep. 30, 2020MMBTU / dbbl / d$ / MMBTU$ / bbl$ / gal
2020 Commodity Contract | Swaps | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	1,133,587
Weighted Average Hedge Price, Swap	2.63	[1]
2020 Commodity Contract | Swaps | Crude Oil
Derivative [Line Items]
Volume Hedged | bbl / d	6,000
Weighted Average Hedge Price, Swap | $ / bbl	58.02
2020 Commodity Contract | Swaps | NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Volume Hedged | bbl / d	2,000
Weighted Average Hedge Price, Swap | $ / gal	0.89
2020 Commodity Contract | Swaps | NGLs (C3-Propane)
Derivative [Line Items]
Volume Hedged | bbl / d	6,000
Weighted Average Hedge Price, Swap | $ / gal	0.51
2020 Commodity Contract | Swaps | NGLs (NC4-Normal Butane)
Derivative [Line Items]
Volume Hedged | bbl / d	1,000
Weighted Average Hedge Price, Swap | $ / gal	0.60
2020 Commodity Contract | Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	5,041
2020 Commodity Contract | Three Way Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	79,891
Weighted average price of hedge, Floor	2.58
Weighted average price of hedge, Ceiling	3.19
Weighted Average Hedge Price, Sold Put	2.23
2020 Commodity Contract | Collars | Natural Gas
Derivative [Line Items]
Weighted average price of hedge, Floor	2
Weighted average price of hedge, Ceiling	2.50
2021 Commodity Contract | Swaps | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	510,000
Weighted Average Hedge Price, Swap	2.77	[1]
2021 Commodity Contract | Swaps | Crude Oil
Derivative [Line Items]
Volume Hedged | bbl / d	1,000
Weighted Average Hedge Price, Swap | $ / bbl	55
2021 Commodity Contract | Three Way Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	240,000
Weighted average price of hedge, Floor	2.33
Weighted average price of hedge, Ceiling	2.60
Weighted Average Hedge Price, Sold Put	1.99
January – October 2021 Commodity Contract | Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	342,237
January – October 2021 Commodity Contract | Collars | Natural Gas
Derivative [Line Items]
Weighted average price of hedge, Floor	2.51
Weighted average price of hedge, Ceiling	3
[1]	We also sold natural gas call swaptions of 140,000 Mmbtu/day for 2021 at a weighted average price of $2.88. In addition, we sold natural gas call swaptions of 280,000 bbls per day for 2022 at a weighted average price of $2.81.

Derivative Activities - Deriv_2

Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail) - Call Swaptions - Natural Gas	Sep. 30, 2020MMBTU / dbbl / d$ / MMBTU$ / bbl
2021 Commodity Contract
Derivative [Line Items]
Volume Hedged | MMBTU / d	140,000
Weighted average price of hedge | $ / MMBTU	2.88
2022 Commodity Contract
Derivative [Line Items]
Volume Hedged | bbl / d	280,000
Weighted average price of hedge | $ / bbl	2.81

Derivative Activities - Schedul

Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 50,004	$ 152,692
Gross Amounts Offset in the Balance Sheet	(29,678)	(15,138)
Net Amounts of Assets Presented in the Balance Sheet	20,326	137,554
Gross Amounts of Recognized (Liabilities)	(114,589)	(29,206)
Gross Amounts Offset in the Balance Sheet	29,678	15,138
Net Amounts of (Liabilities) Presented in the Balance Sheet	(84,911)	(14,068)
Swaps | Contingent Consideration
Derivative [Line Items]
Gross Amounts of Recognized Assets	15,420
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	15,420
Commodity | Swaps | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	10,083	134,364
Gross Amounts Offset in the Balance Sheet	(9,159)	(2,913)
Net Amounts of Assets Presented in the Balance Sheet	924	131,451
Gross Amounts of Recognized (Liabilities)	(33,359)	(1,657)
Gross Amounts Offset in the Balance Sheet	9,159	2,913
Net Amounts of (Liabilities) Presented in the Balance Sheet	(24,200)	1,256
Commodity | Swaps | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	14,065	3,893
Gross Amounts Offset in the Balance Sheet	(13,566)	(4,794)
Net Amounts of Assets Presented in the Balance Sheet	499	(901)
Gross Amounts of Recognized (Liabilities)	0	(4,814)
Gross Amounts Offset in the Balance Sheet	13,566	4,794
Net Amounts of (Liabilities) Presented in the Balance Sheet	13,566	(20)
Commodity | Swaps | NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	101
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	101
Commodity | Swaps | NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	17
Gross Amounts Offset in the Balance Sheet	(17)
Net Amounts of Assets Presented in the Balance Sheet	0
Commodity | Swaps | NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized Assets	25	60
Gross Amounts Offset in the Balance Sheet	0	(127)
Net Amounts of Assets Presented in the Balance Sheet	25	(67)
Gross Amounts of Recognized (Liabilities)		(127)
Gross Amounts Offset in the Balance Sheet		127
Net Amounts of (Liabilities) Presented in the Balance Sheet		0
Commodity | Swaps | NGLs (C4- Butane)
Derivative [Line Items]
Gross Amounts of Recognized Assets		167
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Assets Presented in the Balance Sheet		167
Commodity | Three Way Collars | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	680
Gross Amounts Offset in the Balance Sheet	(680)
Net Amounts of Assets Presented in the Balance Sheet	0
Gross Amounts of Recognized (Liabilities)	(40,563)
Gross Amounts Offset in the Balance Sheet	680
Net Amounts of (Liabilities) Presented in the Balance Sheet	(39,883)
Commodity | Basis Swaps | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	6,620	10,766
Gross Amounts Offset in the Balance Sheet	(3,263)	(1,092)
Net Amounts of Assets Presented in the Balance Sheet	3,357	9,674
Gross Amounts of Recognized (Liabilities)	(1,220)	(1,371)
Gross Amounts Offset in the Balance Sheet	3,263	1,092
Net Amounts of (Liabilities) Presented in the Balance Sheet	2,043	(279)
Commodity | Spread Swaps | NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	2,974	1,913
Gross Amounts Offset in the Balance Sheet	(2,974)	(1,913)
Net Amounts of Assets Presented in the Balance Sheet	0	0
Gross Amounts of Recognized (Liabilities)	(3,503)	(16,040)
Gross Amounts Offset in the Balance Sheet	2,974	1,913
Net Amounts of (Liabilities) Presented in the Balance Sheet	(529)	(14,127)
Commodity | Swaptions | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(1,325)
Net Amounts of Assets Presented in the Balance Sheet		(1,325)
Gross Amounts of Recognized (Liabilities)	(20,368)	(2,594)
Gross Amounts Offset in the Balance Sheet	0	1,325
Net Amounts of (Liabilities) Presented in the Balance Sheet	(20,368)	(1,269)
Commodity | Swaptions | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(1,597)
Net Amounts of Assets Presented in the Balance Sheet		(1,597)
Gross Amounts of Recognized (Liabilities)		(2,254)
Gross Amounts Offset in the Balance Sheet		1,597
Net Amounts of (Liabilities) Presented in the Balance Sheet		(657)
Commodity | Collars | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(14,169)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(14,169)
Commodity | Calls | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(349)
Net Amounts of Assets Presented in the Balance Sheet		(349)
Gross Amounts of Recognized (Liabilities)		(349)
Gross Amounts Offset in the Balance Sheet		349
Net Amounts of (Liabilities) Presented in the Balance Sheet		0
Commodity | Calls | NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	0
Gross Amounts Offset in the Balance Sheet	17
Net Amounts of (Liabilities) Presented in the Balance Sheet	17
Freight | Swaps
Derivative [Line Items]
Gross Amounts of Recognized Assets	19	1,529
Gross Amounts Offset in the Balance Sheet	(19)	(1,028)
Net Amounts of Assets Presented in the Balance Sheet	0	501
Gross Amounts of Recognized (Liabilities)	(1,407)	0
Gross Amounts Offset in the Balance Sheet	19	1,028
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ (1,388)	$ 1,028

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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative [Line Items]
Derivative Fair Value (Loss) Income	$ (124,690)	$ 74,676	$ 102,182	$ 208,190
Contingent Consideration
Derivative [Line Items]
Derivative Fair Value (Loss) Income	430		430
Swaptions
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(14,166)	10,358	(15,520)	39,451
Collars
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(16,893)	356	(14,336)	(3,590)
Three Way Collars
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(20,705)		(38,267)	0
Calls
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(255)	(224)	(12)	(224)
Basis Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	15,587	3,448	31,750	7,801
Commodity | Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	(91,425)	60,090	142,413	161,799
Freight | Swaps
Derivative [Line Items]
Derivative Fair Value (Loss) Income	$ 2,737	$ 648	$ (4,276)	$ 2,953

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	$ 56,859	$ 62,009
Fair Value, Recurring | Commodity | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(9,068)	131,886
Fair Value, Recurring | Commodity | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(14,169)
Fair Value, Recurring | Commodity | Three-Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(39,883)
Fair Value, Recurring | Commodity | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	4,871	(4,732)
Fair Value, Recurring | Commodity | Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(20,368)	(4,848)
Fair Value, Recurring | Commodity | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		(349)
Fair Value, Recurring | Freight | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(1,388)	1,529
Contingent Consideration | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	15,420
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	56,859	62,009
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Three-Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Commodity | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Freight | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 1 | Contingent Consideration | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0
Level 2 | Freight | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(1,400)
Level 2 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	0	0
Level 2 | Fair Value, Recurring | Commodity | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(9,068)	131,886
Level 2 | Fair Value, Recurring | Commodity | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(14,169)
Level 2 | Fair Value, Recurring | Commodity | Three-Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(39,883)
Level 2 | Fair Value, Recurring | Commodity | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	4,871	(4,732)
Level 2 | Fair Value, Recurring | Commodity | Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Level 2 | Fair Value, Recurring | Commodity | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		(349)
Level 2 | Fair Value, Recurring | Freight | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(1,388)	1,529
Level 2 | Contingent Consideration | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	15,420
Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Three-Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Swaptions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(20,368)	(4,848)
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Commodity | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Freight | Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	0	$ 0
Fair Value, Inputs, Level 3 | Contingent Consideration | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Aug. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)Counterparty	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends		$ 114,000		$ 197,000	$ 385,000	$ 560,000
Mark-to-market gain (loss)		3,200,000		$ (361,000)	234,000	6,300,000
Allowance for doubtful accounts on accounts receivable		3,004,000			$ 3,004,000		$ 8,784,000
Number of derivative counterparties | Counterparty					21
Number of counter parties that are not participants in bank credit facility | Counterparty					2
Counterparties not in Facility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net derivative asset		(2,200,000)			$ (2,200,000)
One Counterparty Not in Facility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net derivative asset		$ 3,300,000			3,300,000
Level 2 | Leases
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets					2,000,000
Natural Gas and Oil Properties | Fair Value, Measurements, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets						$ 0
North Louisiana | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets			$ 77,000,000
North Louisiana | Fair Value, Measurements, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets							$ 1,093,531,000
Maximum | North Louisiana | Contingent Consideration
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Potential contractual payout of contingent consideration	$ 90,000,000				$ 90,000,000
Measurement Input, Price Volatility | Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities					21.00%
Measurement Input, Price Volatility | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities					32.00%
Measurement Input, Price Volatility | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities					26.00%

Fair Value Measurements - Recon

Fair Value Measurements - Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy (Detail) - Fair Value, Inputs, Level 3 $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2019	$ (4,848)
Total losses included in earnings	(19,124)
Settlements, net	2,769
Transfers in and/or out of Level 3	835
Balance at September 30, 2020	$ (20,368)

Fair Value Measurements - Value

Fair Value Measurements - Value of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Measurements, Nonrecurring - North Louisiana $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated fair value of consideration	$ 370,500
Impairment on natural gas and oil properties	$ 1,093,531

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Sep. 30, 2020	Dec. 31, 2019
Reported Value Measurement
Assets:
Commodity swaps, collars and basis swaps		$ 4,906	$ 137,554
Marketable securities	[1]	56,859	62,009
Commodity swaps, collars and basis swaps		4,906	137,554
(Liabilities):
Commodity swaps, collars and basis swaps		(84,911)	(14,068)
Bank credit facility	[2]	(706,000)	(477,000)
Deferred compensation plan	[3]	(84,538)	(74,472)
Reported Value Measurement | Contingent Consideration
Assets:
Commodity swaps, collars and basis swaps		15,420	0
Commodity swaps, collars and basis swaps		15,420	0
Estimate of Fair Value Measurement
Assets:
Commodity swaps, collars and basis swaps		4,906	137,554
Marketable securities	[1]	56,859	62,009
Commodity swaps, collars and basis swaps		4,906	137,554
(Liabilities):
Commodity swaps, collars and basis swaps		(84,911)	(14,068)
Bank credit facility	[2]	(706,000)	(477,000)
Deferred compensation plan	[3]	(84,538)	(74,472)
Estimate of Fair Value Measurement | Contingent Consideration
Assets:
Commodity swaps, collars and basis swaps		15,420	0
Commodity swaps, collars and basis swaps		15,420	0
5.75% Senior Notes Due 2021 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(25,496)	(374,139)
5.75% Senior Notes Due 2021 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(25,592)	(375,909)
5.00% Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(169,589)	(511,886)
5.00% Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(163,558)	(501,582)
5.875% Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(48,528)	(297,617)
5.875% Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(47,819)	(294,757)
Other Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(490)	(590)
Other Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(482)	(592)
5.00% Senior Notes Due 2023 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(532,335)	(741,531)
5.00% Senior Notes Due 2023 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(505,787)	(683,291)
4.875% Senior Notes Due 2025 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(750,000)	(750,000)
4.875% Senior Notes Due 2025 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(676,425)	(645,098)
9.25% Senior Notes Due 2026 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(850,000)	0
9.25% Senior Notes Due 2026 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(873,103)	0
5.75% Senior Subordinated Notes Due 2021 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(19,896)	(22,214)
5.75% Senior Subordinated Notes Due 2021 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	(19,477)	(21,539)
5.00% Senior Subordinated Notes Due 2022 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(9,730)	(19,054)
5.00% Senior Subordinated Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	(8,666)	(17,011)
5.00% Senior Subordinated Notes Due 2023 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(7,712)	(7,712)
5.00% Senior Subordinated Notes Due 2023 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	$ (7,127)	$ (7,654)
[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 to the closing price on the balance sheet date which is a Level 1 input.

Fair Value Measurements - Car_2

Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail)	Sep. 30, 2020	Aug. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jan. 31, 2020	Dec. 31, 2019
5.75% Senior Notes Due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%		5.75%	5.75%
5.00% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%		5.00%	5.00%		5.00%
5.875% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.875%		5.875%	5.875%	5.875%	5.875%
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%		5.00%
4.875% Senior Notes Due 2025
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	4.875%					4.875%
9.25% Senior Notes Due 2026
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	9.25%				9.25%	0.00%
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% Senior Subordinated Notes Due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%					5.00%

Stock-based Compensation Plan_2

Stock-based Compensation Plans - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2020Plans
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Active equity-based stock plans	2

Stock-based Compensation Plan_3

Stock-based Compensation Plans - Allocation of Stock-Based Compensation by Functional Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 9,322	$ 9,759	$ 28,697	$ 31,940
Termination Costs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,020	(1)	2,020	25
Direct Operating Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	(74)	319	810	1,459
Brokered Natural Gas and Marketing Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	324	522	905	1,523
Exploration Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	189	496	891	1,372
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 6,863	$ 8,423	$ 24,071	$ 27,561

Stock-based Compensation Plan_4

Stock-based Compensation Plans - Additional Information 1 (Detail)	9 Months Ended
	Sep. 30, 2020Awardshares
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Performance Share
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of awards available for grant	3
Performance Share | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of share value each unit represents at grant date | shares	1
Performance-based PS-PSUs and RS-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Number of awards available for grant	2
Performance-based PS-PSUs and RS-PSUs | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	0.00%
Performance-based PS-PSUs and RS-PSUs | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	200.00%
Performance Based TSR - PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Number of awards available for grant	1
Performance Based TSR - PSUs | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	0.00%
Performance Based TSR - PSUs | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	200.00%

Stock-based Compensation Plan_5

Stock-based Compensation Plans - Additional Information 2 (Detail) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	4,462,711	2,800,000
Granted, weighted average grant date fair value	$ 3.42	$ 10.59
Vesting period	3 years
Stock-based compensation expense	$ 13.4	$ 18.9
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	3,529,686
Granted, weighted average grant date fair value	$ 3.18
Stock-based compensation expense	$ 7.9	$ 7
Restricted Stock Liability Awards | Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	3,300,000	1,000,000
Granted, weighted average grant date fair value	$ 3.03	$ 10.39
Vesting period	3 years	3 years
Restricted Stock Liability Awards | Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	217,000	183,000
Granted, weighted average grant date fair value	$ 5.38	$ 9.11

Stock-based Compensation Plan_6

Stock-based Compensation Plans - Restricted Stock and Restricted Stock Units Outstanding (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	2,002,239
Granted	4,462,711	2,800,000
Vested	(1,788,235)
Forfeited	(431,201)
Outstanding, Ending Balance	4,245,514
Outstanding, Beginning Balance, weighted average grant date fair value	$ 12.32
Granted, weighted average grant date fair value	3.42	$ 10.59
Vested, weighted average grant date fair value	7.08
Forfeited, weighted average grant date fair value	8.47
Outstanding, Ending Balance, weighted average grant date fair value	$ 5.56
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	411,126
Granted	3,529,686
Vested	(2,003,051)
Forfeited	(81,570)
Outstanding, Ending Balance	1,856,191
Outstanding, Beginning Balance, weighted average grant date fair value	$ 10.94
Granted, weighted average grant date fair value	3.18
Vested, weighted average grant date fair value	4.03
Forfeited, weighted average grant date fair value	3.02
Outstanding, Ending Balance, weighted average grant date fair value	$ 3.98

Stock-based Compensation Plan_7

Stock-based Compensation Plans - Additional Information 3 (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation (income) expense	$ 9,322	$ 9,759	$ 28,697	$ 31,940
Performance-based PS-PSUs and RS-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			3 years
Stock-based compensation (income) expense			$ (2,300)	2,300
Performance Based TSR - PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			3 years
Stock-based compensation expense			$ 1,900	$ 2,200

Stock-based Compensation Plan_8

Stock-based Compensation Plans - PS/RS-PSUs Activities (Detail) - Performance-based PS-PSUs and RS-PSUs	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance | shares	881,573
Granted | shares	777,847	[1]
Vested | shares	(101,150)	[2]
Forfeited | shares	(259,711)	[3]
Outstanding, Ending Balance | shares	1,298,559
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares	$ 11.70
Granted, weighted average grant date fair value | $ / shares	2.33	[1]
Vested, weighted average grant date fair value | $ / shares	15.32	[2]
Forfeited, weighted average grant date fair value | $ / shares	2.33	[3]
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares	$ 5.37
[1]	Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets
[2]	For the PS-PSUs and RS-PSUs awards issued during 2017 the aggregate payout was approximately 150%
[3]	For PS-PSU’s tranches granted in 2018, 2019 and 2020 which were set to vest in 2021 and the performance metric is not expected to be met.

Stock-based Compensation Plan_9

Stock-based Compensation Plans - PS/RS-PSUs Activities (Parenthetical) (Detail) - Performance-based PS-PSUs and RS-PSUs - shares		1 Months Ended		9 Months Ended
		May 31, 2017	Mar. 31, 2017	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares vested and issued related to performance period number of common stock	[1]			101,150
March 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate payout of shares issued			150.00%
Shares vested and issued related to performance period number of common stock		58,591
May 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate payout of shares issued				150.00%
Shares vested and issued related to performance period number of common stock				58,591
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted				0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted				200.00%
[1]	For the PS-PSUs and RS-PSUs awards issued during 2017 the aggregate payout was approximately 150%

Stock-based Compensation Pla_10

Stock-based Compensation Plans - Valuation Assumptions for Grant Date Fair Value of Performance Awards (Detail) - Performance Shares - $ / shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	1.40%	2.40%
Expected annual volatility	65.00%	46.00%
Grant date fair value per unit	$ 3.85	$ 11.34

Stock-based Compensation Pla_11

Stock-based Compensation Plans - TSR - PSUs Activities (Detail) - Performance Based TSR - PSUs	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Summary of Performance Share Unit Awards outstanding, Number of Units
Outstanding, Beginning Balance | shares	993,452
Granted | shares	610,155	[1]
Vested | shares	(278,184)	[2]
Forfeited | shares	(75,899)
Outstanding, Ending Balance | shares	1,249,524
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares	$ 19
Granted, weighted average grant date fair value | $ / shares	3.85	[1]
Vested, weighted average grant date fair value | $ / shares	26.12	[2]
Forfeited, weighted average grant date fair value | $ / shares	26.66
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares	$ 9.55
[1]	These
[2]	Includes TSR-PSUs awards issued related to the 2017 performance period where the return on our common stock was in the 60 th th

Stock-based Compensation Pla_12

Stock-based Compensation Plans - TSR - PSUs Activities (Parenthetical) (Detail) - Performance Based TSR - PSUs	9 Months Ended
	Sep. 30, 2020
May 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Return on common stock percentile	80.00%
March 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Return on common stock percentile	60.00%
Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares on performance units granted	0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares on performance units granted	200.00%

Stock-based Compensation Pla_13

Stock-based Compensation Plans - Additional Information 4 (Detail) - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plan vesting period			3 years
Deferred compensation plan	$ (6,237,000)	$ 8,871,000	$ (10,287,000)	$ 16,432,000
Shares held in rabbi trust total	6.1		6.1		3.2
Vested shares held in rabbi trust	4.4		4.4		2.7
Post-Retirement Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated prior service cost amortized from accumulated other comprehensive income into general and administrative expense	$ 90,000	$ 90,000	$ 275,000	$ 275,000

Exit and Termination Costs - Ad

Exit and Termination Costs - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended					9 Months Ended
	Aug. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost And Reserve [Line Items]
One-time minimum volume commitment contract payment		$ 28,500,000			$ 0		$ 28,500,000	$ 0
Restructuring Charges		521,633,000			819,000		533,525,000	3,025,000
Severance costs		4,191,000			819,000		5,638,000	3,000,000
Workforce Reduction
Restructuring Cost And Reserve [Line Items]
Severance costs		3,700,000				$ 2,200,000
North Louisiana
Restructuring Cost And Reserve [Line Items]
Exit cost	$ 479,800,000
Severance costs		2,500,000
Pennsylvania
Restructuring Cost And Reserve [Line Items]
Exit cost		$ 233,000			0		$ 10,678,000	$ 0
Pennsylvania | Capacity Releases on Transportation Pipelines
Restructuring Cost And Reserve [Line Items]
Exit cost			$ 10,400,000
Northwest Pennsylvania
Restructuring Cost And Reserve [Line Items]
Severance costs				$ 1,600,000
Northwest Pennsylvania | Non-Core Assets
Restructuring Cost And Reserve [Line Items]
Severance costs					$ 819,000

Exit and Termination Costs - Su

Exit and Termination Costs - Summary of Exit and Termination Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost And Reserve [Line Items]
Severance costs	$ 4,191	$ 819	$ 5,638	$ 3,000
One-time minimum volume commitment contract payment	28,500	0	28,500	0
Stock-based compensation	2,020	0	2,020	25
Total termination costs	521,633	819	533,525	3,025
Pennsylvania
Restructuring Cost And Reserve [Line Items]
Exit cost	233	0	10,678	0
North Louisiana Contract Release
Restructuring Cost And Reserve [Line Items]
Exit cost	$ 486,689	$ 0	$ 486,689	$ 0

Exit and Termination Costs - Ex

Exit and Termination Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Exit costs included in accrued liabilities in consolidated balance sheet
Accrued severance costs	$ 4,191	$ 819	$ 5,638	$ 3,000
Balance at September 30, 2020	496,408		496,408
Exit Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Balance at December 31, 2019			0
Accrued severance costs			0
Accrued contract obligations			490,115
Accretion of discount			7,252
Payments			(959)
Balance at September 30, 2020	496,408		496,408
Termination Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Balance at December 31, 2019			4,692
Accrued severance costs			5,638
Accrued contract obligations			0
Accretion of discount			0
Payments			(6,170)
Balance at September 30, 2020	$ 4,160		$ 4,160

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($)	Sep. 30, 2020	Dec. 31, 2019	Oct. 31, 2019
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
Stock repurchase program, authorized amount			$ 100,000,000

Capital Stock - Schedule of Cha

Capital Stock - Schedule of Changes in Number of Common Shares Outstanding (Detail) - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Class Of Stock [Line Items]
Beginning balance	249,630,803	249,510,022
Restricted stock grants	3,390,358	1,186,290
Treasury shares acquired	(8,197,662)	(1,798,468)
Ending balance	246,226,215	249,630,803
Restricted Stock
Class Of Stock [Line Items]
Restricted stock units vested	1,104,596	720,212
Performance Share
Class Of Stock [Line Items]
Performance stock units issued	279,420	12,747
Performance stock dividends	18,700,000	0

Capital Stock - Schedule of C_2

Capital Stock - Schedule of Change in Treasury Shares (Detail) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Stockholders Equity Note [Abstract]
Beginning balance	10,007,327	1,808,133
Rabbi trust shares distributed/sold	(1,532)	(2,338)
Shares repurchased	0	8,200,000
Ending balance	10,005,795	10,005,795

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	9 Months Ended			12 Months Ended
	Sep. 30, 2020		Sep. 30, 2019	Dec. 31, 2019	[1]
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$ 343		$ 0
Interest paid	(145,319)		(151,602)
Non-cash investing and financing activities included:
Increase in asset retirement costs capitalized	4,587	[1]	812	$ 11,193
Decrease in accrued capital expenditures	$ (38,942)		$ (4,424)
[1]	Includes costs incurred whether capitalized or expensed.

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Future Minimum Transportation Fees Due (Detail) $ in Thousands	Sep. 30, 2020USD ($)
Commitments And Contingencies Disclosure [Abstract]
Remainder 2020	$ 212,604
2021	849,807
2022	812,176
2023	779,226
2024	763,965
Thereafter	4,817,605
Total commitments	8,235,383
Accrued obligations (see also Note 14)	$ 496,408

Costs Incurred for Property A_3

Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		9 Months Ended			12 Months Ended
		Sep. 30, 2020		Sep. 30, 2019	Dec. 31, 2019
Acquisitions:
Acreage purchases	[1]	$ 11,864			$ 57,324
Development	[1]	283,354			666,984
Gas gathering facilities:
Development	[1]	2,764			3,583
Subtotal	[1]	321,173			764,574
Asset retirement obligations		4,587	[1]	$ 812	11,193	[1]
Total costs incurred	[1]	325,760			775,767
Expense
Exploration:
Exploration costs incurred	[1]	22,296			35,117
Stock-based compensation expense	[1]	$ 895			$ 1,566
[1]	Includes costs incurred whether capitalized or expensed.