Murphy Oil (MUR) 10-Q 31 Oct 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Sep. 30, 2019shares
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	1-8590
Entity Registrant Name	MURPHY OIL CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	71-0361522
Entity Address, Address Line One	300 Peach Street, P.O. Box 7000
Entity Address, City or Town	El Dorado,
Entity Address, State or Province	AR
Entity Address, Postal Zip Code	71731-7000
City Area Code	(870)
Local Phone Number	862-6411
Title of 12(b) Security	Common Stock, $1.00 Par Value
Trading Symbol	MUR
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	157,230,034
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000717423
Current Fiscal Year End Date	--12-31

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	[1]
Current assets
Cash and cash equivalents	$ 434,899	$ 359,923
Accounts receivable, less allowance for doubtful accounts of $1,605 in 2019 and 2018	462,513	231,686
Inventories	79,441	80,024
Prepaid expenses	39,358	34,316
Assets held for sale	128,415	173,865
Total current assets	1,144,626	879,814
Property, plant and equipment, at cost less accumulated depreciation, depletion and amortization of $8,946,731 in 2019 and $8,070,487 in 2018	9,931,963	8,432,133
Operating lease assets	565,987	0
Deferred income taxes	94,592	146,197
Deferred charges and other assets	46,499	49,435
Non-current assets held for sale	0	1,545,008
Total assets	11,783,667	11,052,587
Current liabilities
Current maturities of long-term debt	0	668
Accounts payable	575,461	348,026
Income taxes payable	18,658	15,309
Other taxes payable	27,454	17,649
Operating lease liabilities	117,071	0
Other accrued liabilities	176,102	177,948
Liabilities associated with assets held for sale	18,114	286,458
Total current liabilities	932,860	846,058
Long-term debt, including capital lease obligation	2,779,228	3,109,318
Asset retirement obligations	836,537	752,519
Deferred credits and other liabilities	551,793	624,436
Non-current operating lease liabilities	457,206	0
Deferred income taxes	200,223	129,894
Non-current liabilities associated with assets held for sale	0	392,720
Total liabilities	5,757,847	5,854,945
Equity
Cumulative Preferred Stock, par $100, authorized 400,000 shares, none issued	0	0
Common Stock, par $1.00, authorized 450,000,000 shares, issued 195,083,364 shares in 2019 and 195,076,924 shares in 2018	195,083	195,077
Capital in excess of par value	941,309	979,642
Retained earnings	6,726,316	5,513,529
Accumulated other comprehensive loss	(562,827)	(609,787)
Treasury stock	(1,623,231)	(1,249,162)
Murphy Shareholders' Equity	5,676,650	4,829,299
Noncontrolling interest	349,170	368,343
Total equity	6,025,820	5,197,642
Total liabilities and equity	$ 11,783,667	$ 11,052,587
[1]	Reclassified to conform to current presentation (see Note A).

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,605	$ 1,605
Property, plant and equipment, accumulated depreciation, depletion and amortization	$ 8,946,731	$ 8,070,487
Cumulative Preferred Stock, par value (per share)	$ 100	$ 100
Cumulative Preferred Stock, authorized shares	400,000	400,000
Cumulative Preferred Stock, shares issued	0	0
Common Stock, par value (per share)	$ 1	$ 1
Common Stock, authorized shares	450,000,000	450,000,000
Common Stock, shares issued	195,083,364	195,076,924

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2019		Sep. 30, 2018	[1]	Sep. 30, 2019	Sep. 30, 2018	[1]
Revenues
Revenue from sales to customers	$ 750,337		$ 475,458		$ 2,060,127	$ 1,330,399
Gain (loss) on crude contracts	63,247	[2]	(2,223)		121,163	(69,349)
Gain on sale of assets and other income	3,493		17,276		10,283	26,713
Total revenues	817,077		490,511		2,191,573	1,287,763
Costs and expenses
Lease operating expenses	147,632		83,751		416,460	253,820
Severance and ad valorem taxes	13,803		15,066		36,972	40,099
Transportation, gathering and processing	54,305		16,945		128,748	49,827
Exploration expenses, including undeveloped lease amortization	12,358		21,723		75,570	69,350
Selling and general expenses	55,366		60,683		176,258	165,074
Depreciation, depletion and amortization	325,562		197,503		819,270	570,997	[3]
Accretion of asset retirement obligations	10,587		6,466		29,824	19,234	[3]
Other expense (benefit)	(29,000)		(34,386)		26,442	(44,773)
Total costs and expenses	590,613		367,751		1,709,544	1,123,628
Operating income from continuing operations	226,464		122,760		482,029	164,135
Other income (loss)
Interest and other income (loss)	(4,418)		(4,583)		(18,134)	(713)
Interest expense, net	(44,930)		(44,209)		(145,095)	(133,075)
Total other loss	(49,348)		(48,792)		(163,229)	(133,788)
Income (loss) from continuing operations before income taxes	177,116		73,968		318,800	30,347
Income tax expense (benefit)	18,782		17,837		38,719	(91,180)
Income (loss) from continuing operations	158,334		56,131		280,081	121,527
Income from discontinued operations, net of income taxes	953,368		37,812		1,027,632	186,188	[3]
Net income including noncontrolling interest	1,111,702		93,943		1,307,713	307,715	[3]
Less: Net income attributable to noncontrolling interest	22,700		0		86,257	0
NET INCOME ATTRIBUTABLE TO MURPHY	$ 1,089,002		$ 93,943	[2]	$ 1,221,456	$ 307,715	[2]
INCOME (LOSS) PER COMMON SHARE – BASIC
Continuing operations (in USD per share)	$ 0.85		$ 0.32		$ 1.16	$ 0.70
Discontinued operations (in USD per share)	5.94		0.22		6.14	1.08
Net Income (in USD per share)	6.79		0.54		7.30	1.78
INCOME (LOSS) PER COMMON SHARE – DILUTED
Continuing operations (in USD per share)	0.84		0.32		1.16	0.70
Discontinued operations (in USD per share)	5.92		0.22		6.11	1.07
Net Income (in USD per share)	6.76		0.54		7.27	1.77
Cash dividends per Common share (in USD per share)	$ 0.25		$ 0.25		$ 0.75	$ 0.75
Average Common shares outstanding (thousands)
Basic (in shares)	160,365,705		173,047,246		167,310,202	172,949,450
Diluted (in shares)	160,980,038		174,175,267		168,105,227	174,201,760
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (see Note A).
[3]	Reclassified to conform to current presentation (See Note A).

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,089,002	$ 93,943	[1],[2]	$ 1,221,456	$ 307,715	[1],[2]
Other comprehensive income (loss), net of tax
Net (loss) gain from foreign currency translation	(17,128)	33,380		36,927	(53,805)
Retirement and postretirement benefit plans	2,761	3,390		8,277	10,498
Deferred loss on interest rate hedges reclassified to interest expense	585	585		1,756	1,756
Reclassification of certain tax effects to retained earnings	0	0		0	(30,237)
Other	0	0		0	(3,737)
Other comprehensive income (loss)	(13,782)	37,355		46,960	(75,525)
COMPREHENSIVE INCOME	$ 1,075,220	$ 131,298		$ 1,268,416	$ 232,190
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (see Note A).

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended			9 Months Ended			12 Months Ended
		Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018		Dec. 31, 2018
Operating Activities
Net income including noncontrolling interest		$ 1,111,702	$ 93,943	[1]	$ 1,307,713	$ 307,715	[1],[2]
Adjustments to reconcile net income to net cash provided by continuing operations activities:
(Income) loss from discontinued operations		(953,368)	(37,812)	[1]	(1,027,632)	(186,188)	[1],[2]
Depreciation, depletion and amortization		325,562	197,503	[1]	819,270	570,997	[1],[2]
Previously suspended exploration costs (credits)					12,901	4,514	[2]
Amortization of undeveloped leases					21,680	31,544	[2]
Accretion of asset retirement obligations		10,587	6,466	[1]	29,824	19,234	[1],[2]
Deferred income tax charge (benefit)					50,597	(134,393)	[2]
Pretax (gain) loss from sale of assets					(363)	(6)	[2]
Mark to market and revaluation of contingent consideration					512	0	[2]
Mark to market of crude contracts					(100,076)	1,065	[2]
Long-term non-cash compensation					60,567	52,309	[2]
Net (increase) decrease in noncash operating working capital					40,257	(9,501)	[2]
Other operating activities, net					(62,023)	(55,924)	[2]
Net cash provided by continuing operations activities					1,153,227	601,366	[2]
Investing Activities
Acquisition of oil and gas properties					(1,212,949)	0	[2]
Property additions and dry hole costs					(1,009,146)	(797,630)	[2]
Proceeds from sales of property, plant and equipment					19,072	921	[2]
Net cash required by investing activities					(2,203,023)	(796,709)	[2]
Financing Activities
Borrowings on revolving credit facility and term loan					1,575,000	0
Repayment of revolving credit facility and term loan					(1,900,000)	0
Repurchase of common stock					(405,938)	0	[2]
Capital lease obligation payments					(510)	(154)	[2]
Withholding tax on stock-based incentive awards					(6,991)	(6,922)	[2]
Distribution to noncontrolling interest					(97,510)	0	[2]
Cash dividends paid					(125,437)	(129,780)	[2]
Net cash provided (required) by financing activities					(961,386)	(136,856)	[2]
Cash Flows from Discontinued Operations
Operating activities	[3]				74,361	370,343	[2]
Investing activities	[3]				1,985,202	(60,715)	[2]
Financing activities	[3]				(4,914)	(7,013)	[2]
Net cash provided by discontinued operations	[3]				2,054,649	302,615	[2]
Cash transferred from discontinued operations to continuing operations					2,083,565	536,492	[2]
Effect of exchange rate changes on cash and cash equivalents					2,593	13,107	[2]
Net increase (decrease) in cash and cash equivalents					74,976	217,400	[2]
Cash and cash equivalents at beginning of period					359,923	630,433	[2]	$ 630,433	[2]
Cash and cash equivalents at end of period		$ 434,899	$ 847,833	[2]	$ 434,899	$ 847,833	[2]	$ 359,923
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (See Note A).
[3]	Net cash provided by discontinued operations are not part of the cash flow reconciliation.

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total		Murphy Shareholders' Equity	Cumulative Preferred Stock	Common Stock	Capital In Excess Of Par Value	Retained Earnings		Accumulated Other Comprehensive Loss	Treasury Stock	Noncontrolling Interest
Balance at beginning of period at Dec. 31, 2017					$ 195,056	$ 917,665	$ 5,245,242		$ (462,243)	$ (1,275,529)	$ 0
Exercise of stock options, including income tax benefits					(9)	(175)
Restricted stock transactions and other						(32,766)
Stock-based compensation						20,655
Adjustments to acquisition valuation						0
Net income attributable to noncontrolling interest	$ 307,715	[1],[2]					307,715				0
Reclassification of certain tax effects from accumulated other comprehensive loss	30,237						(30,237)		30,237
Sale and leaseback gain recognized upon adoption of ASC 842, net of tax impact							0
Cash dividends							(129,780)
Foreign currency translation (loss) gain, net of income taxes	(53,805)								(53,805)
Retirement and postretirement benefit plans, net of income taxes	10,498								10,498
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes	1,756								1,756
Other	(3,737)								(3,737)
Purchase of treasury shares										0
Awarded restricted stock, net of forfeitures										26,367
Acquisition closing adjustments											0
Distributions to noncontrolling Interest Owners											0
Balance at end of period at Sep. 30, 2018	4,766,928		$ 4,766,928	$ 0	195,065	905,379	5,453,414		(537,768)	(1,249,162)	0
Balance at beginning of period at Jun. 30, 2018					195,065	898,126	5,402,734		(575,123)	(1,249,162)	0
Exercise of stock options, including income tax benefits					0	0
Restricted stock transactions and other						0
Stock-based compensation						7,253
Adjustments to acquisition valuation						0
Net income attributable to noncontrolling interest	93,943	[1],[2]					93,943	[2]			0
Reclassification of certain tax effects from accumulated other comprehensive loss	0						0		0
Sale and leaseback gain recognized upon adoption of ASC 842, net of tax impact							0
Cash dividends							(43,263)
Foreign currency translation (loss) gain, net of income taxes	33,380								33,380
Retirement and postretirement benefit plans, net of income taxes	3,390								3,390
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes	585								585
Other	0								0
Purchase of treasury shares										0
Awarded restricted stock, net of forfeitures										0
Acquisition closing adjustments											0
Distributions to noncontrolling Interest Owners											0
Balance at end of period at Sep. 30, 2018	4,766,928		4,766,928	0	195,065	905,379	5,453,414		(537,768)	(1,249,162)	0
Balance at beginning of period at Dec. 31, 2018	5,197,642	[2]			195,077	979,642	5,513,529		(609,787)	(1,249,162)	368,343
Exercise of stock options, including income tax benefits					(6)	(123)
Restricted stock transactions and other						(38,732)
Stock-based compensation						25,041
Adjustments to acquisition valuation						(24,519)
Net income attributable to noncontrolling interest	1,221,456						1,221,456				86,257
Reclassification of certain tax effects from accumulated other comprehensive loss	0						0		0
Sale and leaseback gain recognized upon adoption of ASC 842, net of tax impact							116,768
Cash dividends							(125,437)
Foreign currency translation (loss) gain, net of income taxes	36,927								36,927
Retirement and postretirement benefit plans, net of income taxes	8,277								8,277
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes	1,756								1,756
Other	0								0
Purchase of treasury shares										(405,938)
Awarded restricted stock, net of forfeitures										31,869
Acquisition closing adjustments											(7,920)
Distributions to noncontrolling Interest Owners											(97,510)
Balance at end of period at Sep. 30, 2019	6,025,820		5,676,650	0	195,083	941,309	6,726,316		(562,827)	(1,623,231)	349,170
Balance at beginning of period at Jun. 30, 2019					195,083	933,944	5,677,248		(549,045)	(1,517,217)	358,531
Exercise of stock options, including income tax benefits					0	0
Restricted stock transactions and other						0
Stock-based compensation						7,365
Adjustments to acquisition valuation						0
Net income attributable to noncontrolling interest	1,089,002						1,089,002				22,700
Reclassification of certain tax effects from accumulated other comprehensive loss	0						0		0
Sale and leaseback gain recognized upon adoption of ASC 842, net of tax impact							0
Cash dividends							(39,934)
Foreign currency translation (loss) gain, net of income taxes	(17,128)								(17,128)
Retirement and postretirement benefit plans, net of income taxes	2,761								2,761
Deferred loss on interest rate hedges reclassified to interest expense, net of income taxes	585								585
Other	0								0
Purchase of treasury shares										(106,014)
Awarded restricted stock, net of forfeitures										0
Acquisition closing adjustments											(3,328)
Distributions to noncontrolling Interest Owners											(28,733)
Balance at end of period at Sep. 30, 2019	$ 6,025,820		$ 5,676,650	$ 0	$ 195,083	$ 941,309	$ 6,726,316		$ (562,827)	$ (1,623,231)	$ 349,170
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (see Note A).

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cumulative Preferred Stock, par value (per share)	$ 100	$ 100
Cumulative Preferred Stock, authorized shares	400,000	400,000
Cumulative Preferred Stock, shares issued	0	0
Common Stock, par value (per share)	$ 1	$ 1
Common Stock, authorized shares	450,000,000	450,000,000
Common Stock, shares issued	195,083,364	195,065,341
Treasury stock, shares	32,832,771	22,018,095

Nature of Business and Interim

Nature of Business and Interim Financial Statements	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business and Interim Financial Statements	Note A – Nature of Business and Interim Financial Statements NATURE OF BUSINESS – Murphy Oil Corporation is an international oil and gas company that conducts its business through various operating subsidiaries. The Company primarily produces oil and natural gas in the United States and Canada and conducts oil and natural gas exploration activities worldwide. Effective January 1, 2019, Malaysia was reported as discontinued operations as the sale represents a strategic shift that has a major effect on the Company’s operations and financial results. Prior periods have been reclassified to conform with the current presentation. See Note D – Property, Plant, and Equipment and Note E – Discontinued Operations and Assets Held for Sale for more information regarding the sale of this asset. In connection with the LLOG acquisition, further discussed in Note Q – Acquisitions , we now hold a 0.5% interest in two variable interest entities (VIEs), Delta House Oil and Gas Lateral LLC and Delta House FPS LLC (collectively Delta House). These VIEs have not been consolidated because we are not considered the primary beneficiary. These non-consolidated VIEs are not material to our financial position or results of operations. As of September 30, 2019 , our maximum exposure to loss was $3.7 million , which represents our net investment in Delta House. We have not provided any financial support to Delta House other than amounts previously required by our membership interest. INTERIM FINANCIAL STATEMENTS – In the opinion of Murphy’s management, the unaudited financial statements presented herein include all accruals necessary to present fairly the Company’s financial position at September 30, 2019 and December 31, 2018 , and the results of operations, cash flows and changes in stockholders’ equity for the interim periods ended September 30, 2019 and 2018 , in conformity with accounting principles generally accepted in the United States of America (U.S.). In preparing the financial statements of the Company in conformity with accounting principles generally accepted in the U.S., management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, and expenses and the disclosure of contingent assets and liabilities. Actual results may differ from the estimates. Financial statements and notes to consolidated financial statements included in this Form 10-Q report should be read in conjunction with the Company’s 2018 Form 10-K report, as certain notes and other pertinent information have been abbreviated or omitted in this report. Financial results for the three-month and nine-month periods ended September 30, 2019 are not necessarily indicative of future results.

New Accounting Principles and R

New Accounting Principles and Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
New Accounting Principles and Recent Accounting Pronouncements	Accounting Principles Adopted Leases. In February 2016, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update (ASU) 2016-02 (Topic 842) to increase transparency and comparability among companies by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The main difference between previous Generally Accepted Accounting Principles (GAAP) and this ASU is the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. The company adopted the standard in the first quarter of 2019 utilizing the modified retrospective transition method through a cumulative-effect adjustment at the beginning of the first quarter of 2019 . The Company has elected the package of practical expedients, which allows the Company not to reassess (1) whether any expired or existing contracts as of the adoption date are or contain a lease, (2) lease classification for any expired or existing leases as of the adoption date and (3) initial direct costs for any existing leases as of the adoption date. The Company did not elect to apply the hindsight practical expedient when determining lease term and assessing impairment of right-of-use assets. The adoption of ASU 2016-02 resulted in the recognition of right-of-use assets of $618.1 million , current lease liabilities for operating leases of approximately $155.5 million , non-current lease liabilities of $468.4 million and a cumulative-effect adjustment to credit retained earnings of $116.8 million on its Consolidated Balance Sheets, with no material impact to its Consolidated Statements of Operations. See Note P for further information regarding the impact of the adoption of ASU 2016-02 on the Company’s financial statements. Compensation – Stock Compensation. In June 2018, the FASB issued an ASU 2018-07 which supersedes existing guidance for equity-based payments to nonemployees and expands the scope of guidance for stock compensation to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. As a result, the same guidance that provides for employee share-based payments, including most of its requirements related to classification and measurement, applies to nonemployee share-based payment arrangements. The Company adopted this guidance during the first quarter of 2019 and it did not have material impact on its consolidated financial statements. Recent Accounting Pronouncements Financial Instruments – Credit Losses. In June 2016, the FASB issued ASU 2016-13 which replaces the impairment model for most financial assets, including trade receivables, from the incurred loss methodology to a forward-looking expected loss model that will result in earlier recognition of credit losses. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, with early adoption permitted, and is to be applied on a modified retrospective basis. The Company is currently assessing the potential impact of this ASU, but does not expect a material impact to its consolidated financial statements. Fair Value Measurement. In August 2018, the FASB issued ASU 2018-13 which modifies disclosure requirements related to fair value measurement. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Implementation on a prospective or retrospective basis varies by specific disclosure requirement. Early adoption is permitted. The standard also allows for early adoption of any removed or modified disclosures upon issuance of this ASU while delaying adoption of the additional disclosures until their effective date. The Company is currently assessing the potential impact of this ASU to its consolidated financial statements. Compensation-Retirement Benefits-Defined Benefit Plans-General. In August 2018, the FASB issued ASU 2018-14 which modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. For public companies, the amendments in this ASU are effective for fiscal years beginning after December 15, 2020, with early adoption permitted, and is to be applied on a retrospective basis to all periods presented. The Company is currently assessing the potential impact of this ASU to its consolidated financial statements.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Nature of Goods and Services The Company explores for and produces crude oil, natural gas and natural gas liquids (collectively oil and gas) in select basins around the globe. The Company’s revenue from sales of oil and gas production activities are primarily subdivided into two key geographic segments: the U.S. and Canada. Additionally, revenue from sales to customers is generated from three primary revenue streams: crude oil and condensate, natural gas liquids, and natural gas. For operated oil and gas production where the non-operated working interest owner does not take-in-kind its proportionate interest in the produced commodity, the Company acts as an agent for the working interest owner and recognizes revenue only for its own share of the commingled production. U.S.- In the United States, the Company primarily produces oil and gas from fields in the Eagle Ford Shale area of South Texas and in the Gulf of Mexico. Revenue is generally recognized when oil and gas are transferred to the customer at the delivery point. Revenue recognized is largely index based with price adjustments for floating market differentials. Canada- In Canada, contracts are primarily long-term floating commodity index priced, except for certain natural gas physical forward sales fixed-price contracts. For the Offshore business in Canada, contracts are based on index prices and revenue is recognized at the time of vessel load based on the volumes on the bill of lading and point of custody transfer. In the third quarter of 2019, the Company made an immaterial reclassification to correct its financial statements to report transportation, gathering, and processing costs as a separate line item (previously reported net in revenue) in the Consolidated Statements of Operations and revised all historical periods to reflect this presentation. There was no resultant change in net income attributable to Murphy. Disaggregation of Revenue The Company reviews performance based on two key geographical segments and between onshore and offshore sources of revenue within these geographies. For the three-months ended September 30, 2019 and 2018 , the Company recognized $750.3 million and $475.5 million , respectively, from contracts with customers for the sales of oil, natural gas liquids and natural gas. For the nine -months ended September 30, 2019 and 2018 the Company recognized $2,060.1 million and $1,330.4 million , respectively, from contracts with customers for the sales of oil, natural gas liquids and natural gas. Three Months Ended Nine Months Ended (Thousands of dollars) 2019 2018 2019 2018 Net crude oil and condensate revenue United States Onshore $ 219,515 227,022 547,756 612,194 Offshore 398,518 95,059 1,090,462 264,174 Canada Onshore 31,758 34,504 88,730 87,018 Offshore 28,408 35,929 115,686 141,313 Other 1,933 3,156 7,908 3,156 Total crude oil and condensate revenue 680,132 395,670 1,850,542 1,107,855 Net natural gas liquids revenue United States Onshore 5,557 19,196 22,497 48,615 Offshore 8,414 3,600 18,184 9,013 Canada Onshore 2,751 4,140 8,987 11,062 Total natural gas liquids revenue 16,722 26,936 49,668 68,690 Net natural gas revenue United States Onshore 5,848 8,833 20,762 25,670 Offshore 15,879 3,965 29,575 11,161 Canada Onshore 31,756 40,054 109,580 117,023 Total natural gas revenue 53,483 52,852 159,917 153,854 Total revenue from contracts with customers 750,337 475,458 2,060,127 1,330,399 Gain (loss) on crude contracts 63,247 (2,223 ) 121,163 (69,349 ) Gain on sale of assets and other income 1 3,493 17,276 10,283 26,713 Total revenue $ 817,077 490,511 2,191,573 1,287,763 1 Gain on sale of Malaysia operations of $960.0 million is reported in discontinued operations. See Note E. Contract Balances and Asset Recognition As of September 30, 2019 , and December 31, 2018 , receivables from contracts with customers, net of royalties and associated payables, on the balance sheet from continuing operations, were $146.4 million and $147.6 million , respectively. Payment terms for the Company’s sales vary across contracts and geographical regions, with the majority of the cash receipts required within 30 days of billing. Based on historical collections and ability of customers to pay, the Company did not recognize any impairment losses on receivables or contract assets arising from customer contracts during the reporting periods. The Company has not entered into any upstream oil and gas sale contracts that have financing components as at September 30, 2019 . The Company does not employ sales incentive strategies such as commissions or bonuses for obtaining sales contracts. For the periods presented, the Company did not identify any assets to be recognized associated with the costs to obtain a contract with a customer. Performance Obligations The Company recognizes oil and gas revenue when it satisfies a performance obligation by transferring control over a commodity to a customer. Judgment is required to determine whether some customers simultaneously receive and consume the benefit of commodities. As a result of this assessment for the Company, each unit of measure of the specified commodity is considered to represent a distinct performance obligation that is satisfied at a point in time upon the transfer of control of the commodity. For contracts with market or index-based pricing, which represent the majority of sales contracts, the Company has elected the allocation exception and allocates the variable consideration to each single performance obligation in the contract. As a result, there is no price allocation to unsatisfied remaining performance obligations for delivery of commodity product in subsequent periods. The Company has entered into several long-term, fixed-price contracts in Canada. The underlying reason for entering a fixed price contract is generally unrelated to anticipated future prices or other observable data and serves a particular purpose in the company’s long-term strategy. As of September 30, 2019 , the Company had the following sales contracts in place which are expected to generate revenue from sales to customers for a period of 12 months or more starting at the inception of the contract: ໿ Current Long-Term Contracts Outstanding at September 30, 2019 Location Commodity End Date Description Approximate Volumes U.S. Oil Q4 2021 Fixed quantity delivery in Eagle Ford 17,000 BOED U.S. Oil, Gas and NGL Q2 2026 Deliveries from dedicated acreage in Eagle Ford As produced U.S. NGL Q4 2020 Dedicated acreage delivery in GOM As produced Canada Gas Q4 2020 Contracts to sell natural gas at Alberta AECO fixed prices 59 MMCFD Canada Gas Q4 2020 Contracts to sell natural gas at USD Index pricing 60 MMCFD Canada Gas Q4 2021 Contracts to sell natural gas at USD Index pricing 10 MMCFD Canada Gas Q4 2024 Contracts to sell natural gas at USD Index pricing 30 MMCFD Canada Gas Q4 2026 Contracts to sell natural gas at USD Index pricing 38 MMCFD Canada Gas Q4 2026 Contracts to sell natural gas at USD Index pricing 11 MMCFD Fixed price contracts are accounted for as normal sales and purchases for accounting purposes.

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Exploratory Wells Under FASB guidance exploratory well costs should continue to be capitalized when the well has found a sufficient quantity of reserves to justify its completion as a producing well and the Company is making sufficient progress assessing the reserves and the economic and operating viability of the project. At September 30, 2019 , the Company had total capitalized exploratory well costs for continuing operations pending the determination of proved reserves of $280.7 million . The following table reflects the net changes in capitalized exploratory well costs during the nine -month periods ended September 30, 2019 and 2018 . (Thousands of dollars) 2019 2018 Beginning balance at January 1 $ 207,855 155,103 Additions pending the determination of proved reserves 86,025 41,560 Reclassifications to proved properties based on the determination of proved reserves — (2,214 ) Capitalized exploratory well costs charged to expense (13,145 ) (4,521 ) Balance at September 30 $ 280,735 189,928 The capitalized well costs charged to expense during 2019 included the CM-1X and the CT-1X wells in Vietnam Block 11-2/11. The wells were originally drilled in 2017. The capitalized well costs charged to expense in 2018 included the Julong East well in Block CA-1, offshore Brunei in which further development of the well was not sanctioned by the operator and the contract term for development sanctions expired. This well was originally drilled in 2012. The following table provides an aging of capitalized exploratory well costs based on the date the drilling was completed for each individual well and the number of projects for which exploratory well costs have been capitalized. The projects are aged based on the last well drilled in the project.  September 30,  2019 2018 (Thousands of dollars) Amount No. of Wells No. of Projects Amount No. of Wells No. of Projects Aging of capitalized well costs: Zero to one year $ 64,711 5 5 $ 46,813 1 1 One to two years 63,615 1 1 41,051 3 2 Two to three years 27,500 1 — 5,208 1 1 Three years or more 124,909 5 — 96,856 4 1  $ 280,735 12 6 $ 189,928 9 5 Of the $216.0 million of exploratory well costs capitalized more than one year at September 30, 2019 , $57.4 million is in Brunei, $67.5 million is in Vietnam, $63.6 million is in the Gulf of Mexico and $27.5 million is in the U.S. In all geographical areas, either further appraisal or development drilling is planned and/or development studies/plans are in various stages of completion. Divestments In July 2019, the Company completed a divestiture of its two subsidiaries conducting Malaysian operations, Murphy Sabah Oil Co., Ltd. and Murphy Sarawak Oil Co., Ltd., in a transaction with PTT Exploration and Production Public Company Limited (PTTEP) which was effective January 1, 2019. Total cash consideration received upon closing was $2.0 billion. A gain on sale of $960.0 million was recorded as part of discontinued operations on the Consolidated Statement of Operations during the third quarter 2019. The Company does not anticipate tax liabilities related to the sales proceeds. Murphy is entitled to receive a $100.0 million bonus payment contingent upon certain future exploratory drilling results prior to October 2020. In 2016, a Canadian subsidiary of the Company completed a divestiture of natural gas processing and sales pipeline assets that support Murphy’s Montney natural gas fields in the Tupper area of northeastern British Columbia. Total cash consideration received upon closing was $414.1 million . A gain on sale of approximately $187.0 million was deferred, up to December 31, 2018 , and prior to 2019 was being recognized straight line over the life of the contract in the Canadian operating segment. The remaining deferred gain of $116.8 million , net of tax, was included as a component of Deferred credits and other liabilities in the Company’s Consolidated Balance Sheet as of December 31, 2018 . As required by ASC 842, effective January 1, 2019, the previously deferred gain related to the sale and leaseback transaction has been transferred to equity upon adoption, lowering liabilities but increasing retained earnings by approximately $116.8 million , net of tax. The Company amortized approximately $5.7 million of the deferred gain during the first nine months of 2018 . Acquisitions In 2016, a Canadian subsidiary of Murphy Oil acquired a 70% operated working interest (WI) in Athabasca Oil Corporation’s (Athabasca) production, acreage, infrastructure and facilities in the Kaybob Duvernay lands, and a 30% non-operated WI in Athabasca’s production, acreage, infrastructure and facilities in the liquids rich Placid Montney lands in Alberta, the majority of which was unproved. As part of the transaction, Murphy agreed to pay an additional $168.0 million in the form of a carried interest on the Kaybob Duvernay property. As of September 30, 2019 , $131.6 million of the carried interest had been paid. The remaining carry is to be paid over a period through 2020.

Discontinued Operations and Ass

Discontinued Operations and Assets Held for Sale	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Assets Held for Sale	Discontinued Operations and Assets Held for Sale The Company has accounted for its Malaysian exploration and production operations, along with the former U.K., U.S. refining and marketing operations as discontinued operations for all periods presented. The results of operations associated with discontinued operations for the three and nine -month period ended September 30, 2019 and 2018 were as follows:  Three Months Ended Nine Months Ended (Thousands of dollars) 2019 2018 2019 2018 Revenues 1 $ 972,737 201,370 1,328,110 640,806 Costs and expenses Lease operating expenses 6,262 49,390 127,138 152,406 Depreciation, depletion and amortization — 44,326 33,697 139,566 Other costs and expenses (benefits) 11,078 36,642 81,560 55,665 Income before taxes 955,397 71,012 1,085,715 293,169 Income tax expense 2,029 33,200 58,083 106,981 Income from discontinued operations $ 953,368 37,812 1,027,632 186,188 1 In 2019, includes $960.0 million gain on sale of Malaysia operations. The following table presents the carrying value of the major categories of assets and liabilities of the Brunei exploration and production and the U.K. refining and marketing operations reflected as held for sale on the Company’s Consolidated Balance Sheet at September 30, 2019 . As of December 31, 2018 , the Malaysian exploration and production business was also held for sale. The closing of this sale occurred on July 10, 2019. (Thousands of dollars) September 30, December 31, Current assets Cash $ 25,307 44,669 Accounts receivable 3,859 103,158 Inventories 406 7,887 Prepaid expenses and other 1,847 18,151 Property, Plant, and Equipment, net 87,556 — Deferred income taxes and other assets 9,440 — Total current assets associated with assets held for sale 128,415 173,865 Non-current assets Property, Plant, and Equipment, net — 1,325,431 Deferred income taxes and other assets — 219,577 Total non-current assets associated with assets held for sale $ — 1,545,008 Current liabilities Accounts payable $ 8,563 203,236 Other accrued liabilities 448 55,273 Current maturities of long-term debt (finance lease) 696 9,915 Taxes payable 752 18,034 Long-term debt (finance lease) 7,420 — Asset retirement obligation 235 — Total current liabilities associated with assets held for sale 18,114 286,458 Non-current liabilities Long-term debt — 117,816 Asset retirement obligation — 274,904 Total non-current liabilities associated with assets held for sale $ — 392,720

Financing Arrangements and Debt

Financing Arrangements and Debt	9 Months Ended
	Sep. 30, 2019
Debt Disclosure [Abstract]
Financing Arrangements and Debt	Financing Arrangements and Debt On May 30, 2019, the Company entered into a $500 million term loan credit facility (the New Term Credit Facility). The New Term Credit Facility was a senior unsecured guaranteed facility with an original maturity date of December 2, 2019. The covenants within the New Term Credit Facility were substantially consistent with those in the Company’s revolving credit facility (see 2018 facility below), and borrowings under the New Term Credit Facility bore interest at comparable rates to those incurred under the 2018 facility. The New Term Credit Facility was prepayable at any time by the Company and had to be repaid no later than 30 days after closing of the Company’s previously announced Malaysia divestiture. In July 2019, the Company closed the previously announced Malaysia divestiture, repaid and terminated the New Term Credit Facility. As of September 30, 2019 , the Company has a $1.6 billion revolving credit facility (2018 facility). The 2018 facility is a senior unsecured guaranteed facility which expires in November 2023. At September 30, 2019 , the Company had no outstanding borrowings under the 2018 facility and $4.6 million of outstanding letters of credit, which reduce the borrowing capacity of the 2018 facility. At September 30, 2019 , the interest rate in effect on borrowings under the facility would have been 3.51% . At September 30, 2019 , the Company was in compliance with all covenants related to the 2018

Other Financial Information

Other Financial Information	9 Months Ended
	Sep. 30, 2019
Other Financial Information [Abstract]
Other Financial Information	Other Financial Information Additional disclosures regarding cash flow activities are provided below. ໿  Nine Months Ended (Thousands of dollars) 2019 2018 Net (increase) decrease in operating working capital, excluding cash and cash equivalents: (Increase) decrease in accounts receivable ² $ (128,698 ) (32,372 ) (Increase) decrease in inventories 4,398 21,367 (Increase) decrease in prepaid expenses (3,745 ) (3 ) Increase (decrease) in accounts payable and accrued liabilities ² 165,224 1,185 Increase (decrease) in income taxes payable 3,078 322 Net (increase) decrease in noncash operating working capital $ 40,257 (9,501 ) Supplementary disclosures: Cash income taxes paid, net of refunds $ (4,563 ) (4,508 ) Interest paid, net of amounts capitalized of $0.2 million in 2019 and $0 in 2018 137,116 113,820 Non-cash investing activities: Asset retirement costs capitalized ¹ $ 48,203 2,907 (Increase) decrease in capital expenditure accrual (52,659 ) 27,551  1 Includes asset retirement obligations assumed as part of the LLOG acquisition of $37.3 million . See Note Q. 2 Excludes receivable/payable balances relating to mark-to-market of crude contracts and contingent consideration relating to acquisitions.

Employee and Retiree Benefit Pl

Employee and Retiree Benefit Plans	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Employee and Retiree Benefit Plans	Employee and Retiree Benefit Plans The Company has defined benefit pension plans that are principally noncontributory and cover most full-time employees. All pension plans are funded except for the U.S. and Canadian nonqualified supplemental plan and the U.S. director’s plan. All U.S. tax qualified plans meet the funding requirements of federal laws and regulations. Contributions to foreign plans are based on local laws and tax regulations. The Company also sponsors health care and life insurance benefit plans, which are not funded, that cover most retired U.S. employees. The health care benefits are contributory; the life insurance benefits are noncontributory. The table that follows provides the components of net periodic benefit expense for the three and nine -month periods ended September 30, 2019 and 2018 .  Three Months Ended September 30,  Pension Benefits Other Postretirement Benefits (Thousands of dollars) 2019 2018 2019 2018 Service cost $ 2,064 2,252 421 492 Interest cost 7,151 6,716 945 874 Expected return on plan assets (6,455 ) (7,476 ) — — Amortization of prior service cost (credit) 248 254 (98 ) (10 ) Recognized actuarial loss 3,516 5,197 — — Net periodic benefit expense $ 6,524 6,943 1,268 1,356 Nine Months Ended September 30, Pension Benefits Other Postretirement Benefits (Thousands of dollars) 2019 2018 2019 2018 Service cost $ 6,188 6,761 1,261 1,479 Interest cost 21,402 20,160 2,833 2,622 Expected return on plan assets (19,285 ) (22,435 ) — — Amortization of prior service cost (credit) 741 767 (293 ) (29 ) Recognized actuarial loss 10,538 15,593 — — Net periodic benefit expense $ 19,584 20,846 3,801 4,072 The components of net periodic benefit expense, other than the service cost component, are included in the line item “Interest and other income (loss)” in Consolidated Statements of Operations. During the nine -month period ended September 30, 2019 , the Company made contributions of $24.1 million to its defined benefit pension and postretirement benefit plans. Remaining funding in 2019 for the Company’s defined benefit pension and postretirement plans is anticipated to be $8.3 million .

Incentive Plans

Incentive Plans	9 Months Ended
	Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Incentive Plans	Incentive Plans The costs resulting from all share-based and cash-based incentive plans are recognized as an expense in the Consolidated Statements of Operations using a fair value-based measurement method over the periods that the awards vest. The 2017 Annual Incentive Plan (2017 Annual Plan) authorizes the Executive Compensation Committee (the Committee) to establish specific performance goals associated with annual cash awards that may be earned by officers, executives and certain other employees. Cash awards under the 2017 Annual Plan are determined based on the Company’s actual financial and operating results as measured against the performance goals established by the Committee. The 2018 Long-Term Incentive Plan (2018 Long-Term Plan) authorizes the Committee to make grants of the Company’s Common Stock to employees. These grants may be in the form of stock options (nonqualified or incentive), stock appreciation rights (SAR), restricted stock, restricted stock units (RSU), performance units, performance shares, dividend equivalents and other stock-based incentives. The 2018 Long-Term Plan expires in 2028. A total of 6,750,000 shares are issuable during the life of the 2018 Long-Term Plan, with annual grants limited to one percent ( 1% ) of Common shares outstanding. Shares issued pursuant to awards granted under this Plan may be shares that are authorized and unissued or shares that were reacquired by the Company, including shares purchased in the open market. Share awards that have been canceled, expired, forfeited or otherwise not issued under an award shall not count as shares issued under this Plan. The Company also has a Stock Plan for Non-Employee Directors that permits the issuance of restricted stock, restricted stock units and stock options or a combination thereof to the Company’s Non-Employee Directors. In the first quarter of 2019 , the Committee granted 957,600 performance-based RSUs and 327,900 time-based RSUs to certain employees. The fair value of the performance-based RSUs, using a Monte Carlo valuation model, was $28.09 per unit. The fair value of the time-based RSUs was estimated based on the fair market value of the Company’s stock on the date of grant of $28.16 per unit. Additionally, in February 2019, the Committee granted 1,025,900 cash-settled RSUs (CRSU) to certain employees. The CRSUs are to be settled in cash, net of applicable income taxes, and are accounted for as liability-type awards. The initial fair value of the CRSUs granted in February 2019 was $28.16 . Also in February, the Committee granted 78,716 shares of time-based RSUs to the Company’s non-employee Directors under the 2018 Stock Plan for Non-Employee Directors. These units are scheduled to vest on the third anniversary of the date of grant. The estimated fair value of these awards was $27.95 per unit on date of grant. All stock option exercises are non-cash transactions for the Company. The employee receives net shares, after applicable withholding taxes, upon each stock option exercise. The actual income tax benefit realized from the tax deductions related to stock option exercises of the share-based payment arrangements were immaterial for the nine -month period ended September 30, 2019 . Amounts recognized in the financial statements with respect to share-based plans are shown in the following table:  Nine Months Ended (Thousands of dollars) 2019 2018 Compensation charged against income before tax benefit $ 39,884 36,348 Related income tax benefit recognized in income 6,204 5,532 Certain incentive compensation granted to the Company’s named executive officers, to the extent their total compensation exceeds $1.0 million per executive per year, is not eligible for a U.S. income tax deduction under the Tax Cuts and Jobs Act (2017 Tax Act).

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Net income attributable to Murphy was used as the numerator in computing both basic and diluted income per Common share for the three and nine -month periods ended September 30, 2019 and 2018 . The following table reports the weighted-average shares outstanding used for these computations.  Three Months Ended Nine Months Ended (Weighted-average shares) 2019 2018 2019 2018 Basic method 160,365,705 173,047,246 167,310,202 172,949,450 Dilutive stock options and restricted stock units 614,333 1,128,021 795,025 1,252,310 Diluted method 160,980,038 174,175,267 168,105,227 174,201,760 The following table reflects certain options to purchase shares of common stock that were outstanding during the periods presented but were not included in the computation of diluted shares above because the incremental shares from the assumed conversion were antidilutive.  Three Months Ended Nine Months Ended  2019 2018 2019 2018 Antidilutive stock options excluded from diluted shares 2,903,768 2,870,549 3,016,361 3,544,087 Weighted average price of these options $ 44.65 $ 54.06 $ 45.38 $ 50.49

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s effective income tax rate is calculated as the amount of income tax expense (benefit) divided by income from continuing operations before income taxes. For the three and nine -month periods ended September 30, 2019 and 2018 , the Company’s effective income tax rates were as follows:  2019 2018 Three months ended September 30, 10.6% 24.1% Nine months ended September 30, 12.1% (300.5)% The effective tax rate for the three-month period ended September 30, 2019 was below the U.S. statutory tax rate of 21% due to an income tax deduction for prior years Vietnam exploration spend which resulted in an income tax benefit of $15.0 million . The effective tax rate for the three-month period ended September 30, 2018 was above the statutory tax rate primarily due to net losses and exploration expenses in certain foreign jurisdictions for which no income tax benefits will be realized, and income generated in foreign jurisdictions which have income tax rates higher than the U.S. statutory tax rate. The effective tax rate for the nine -month period ended September 30, 2019 was below the U.S. statutory tax rate of 21% due to to an income tax deduction for prior years Vietnam exploration spend which resulted in an income tax benefit of $15.0 million , a reduction of the Alberta provincial corporate income tax rate that reduced the future deferred tax liability by $13.0 million , and no tax applied to the pre-tax income of the noncontrolling interest in MP GOM. For the nine -month period ended September 30, 2018 the effective tax rate is lower than the statutory tax rate of 21% because the Company reported a favorable tax adjustment related to the 2017 Tax Act. The IRS’s April 2, 2018 guidance allowed for the preservation of 2017 operating loss carryforwards under the 2017 Tax Act’s taxation of unrepatriated foreign earnings. The preservation of the tax loss carryforward reduced the deferred tax expense by $156 million and resulted in a $36 million charge to taxes payable for a net $120 million tax benefit. The Company’s tax returns in multiple jurisdictions are subject to audit by taxing authorities. These audits often take multiple years to complete and settle. Although the Company believes that recorded liabilities for unsettled issues are adequate, additional gains or losses could occur in future years from resolution of outstanding unsettled matters. As of September 30, 2019 , the earliest years remaining open for audit and/or settlement in our major taxing jurisdictions are as follows: United States – 2016 ; Canada – 2015 ; Malaysia – 2012 ; and United Kingdom – 2017 . Following the divestment of Malaysia, the Company has retained certain possible liabilities and rights to income tax receivables relating to Malaysia for the years prior to 2019. The Company believes current recorded liabilities are adequate.

Financial Instruments and Risk

Financial Instruments and Risk Management	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments and Risk Management	Financial Instruments and Risk Management Murphy uses derivative instruments to manage certain risks related to commodity prices, foreign currency exchange rates and interest rates. The use of derivative instruments for risk management is covered by operating policies and is closely monitored by the Company’s senior management. The Company does not hold any derivatives for speculative purposes and it does not use derivatives with leveraged or complex features. Derivative instruments are traded with creditworthy major financial institutions or over national exchanges such as the New York Mercantile Exchange (NYMEX). The Company has a risk management control system to monitor commodity price risks and any derivatives obtained to manage a portion of such risks. For accounting purposes, the Company has not designated commodity and foreign currency derivative contracts as hedges, and therefore, it recognizes all gains and losses on these derivative contracts in its Consolidated Statements of Operations. Certain interest rate derivative contracts were accounted for as hedges and the gain or loss associated with recording the fair value of these contracts was deferred in Accumulated other comprehensive loss until the anticipated transactions occur. Commodity Price Risks At September 30, 2019 , the Company had 35,000 barrels per day in WTI crude oil swap financial contracts maturing through the end of 2019 at an average price of $60.51 and 35,000 barrels per day in WTI crude oil swap financial contracts maturing ratably during 2020 at an average price of $57.59 . Under these contracts, which mature monthly, the Company pays the average monthly price in effect and receives the fixed contract price. At September 30, 2018 , the Company had 21,000 barrels per day in WTI crude oil swap financial contracts maturing ratably during 2018 at an average price of $54.88 . Foreign Currency Exchange Risks The Company is subject to foreign currency exchange risk associated with operations in countries outside the U.S. The Company had no foreign currency exchange short-term derivatives outstanding at September 30, 2019 and 2018 . At September 30, 2019 and December 31, 2018 , the fair value of derivative instruments not designated as hedging instruments are presented in the following table.  September 30, 2019 December 31, 2018 (Thousands of dollars) Asset (Liability) Derivatives Asset (Liability) Derivatives Type of Derivative Contract Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity Accounts receivable $ 104,358 Accounts receivable $ 3,837 For the three-month and nine -month periods ended September 30, 2019 and September 30, 2018 , the gains and losses recognized in the Consolidated Statements of Operations for derivative instruments not designated as hedging instruments are presented in the following table.  Gain (Loss) Gain (Loss) (Thousands of dollars) Three Months Ended Nine months ended September 30, Type of Derivative Contract Statement of Operations Location 2019 2018 2019 2018 Commodity Gain (loss) on crude contracts $ 63,247 (2,223 ) 121,163 (69,349 ) Interest Rate Risks Under hedge accounting rules, the Company deferred the net cost associated with derivative contracts purchased to manage interest rate risk associated with 10 years notes sold in May 2012 to match the payment of interest on these notes through 2022. During each of the nine -month periods ended September 30, 2019 and 2018 , $2.2 million of the deferred loss on the interest rate swaps was charged to Interest expense in the Consolidated Statement of Operations. The remaining loss (net of tax) deferred on these matured contracts at September 30, 2019 was $6.1 million , which is recorded, net of income taxes of $1.6 million , in Accumulated other comprehensive loss in the Consolidated Balance Sheet. The Company expects to charge approximately $0.7 million of this deferred loss to Interest expense, net in the Consolidated Statement of Operations during the remainder of 2019 . Fair Values – Recurring The Company carries certain assets and liabilities at fair value in its Consolidated Balance Sheets. The fair value hierarchy is based on the quality of inputs used to measure fair value, with Level 1 being the highest quality and Level 3 being the lowest quality. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included within Level 1. Level 3 inputs are unobservable inputs which reflect assumptions about pricing by market participants. The carrying value of assets and liabilities recorded at fair value on a recurring basis at September 30, 2019 and December 31, 2018 , are presented in the following table.  September 30, 2019 December 31, 2018 (Thousands of dollars) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Commodity derivative contracts $ — 104,358 — 104,358 — 3,837 — 3,837  $ — 104,358 — 104,358 — 3,837 — 3,837  Liabilities: Nonqualified employee savings plans $ 15,499 — — 15,499 13,845 — — 13,845 Contingent consideration — — 137,688 137,688 — — 47,730 47,730  $ 15,499 — 137,688 153,187 13,845 — 47,730 61,575 The fair value of WTI crude oil derivative contracts in 2018 and 2019 were based on active market quotes for WTI crude oil. The income effect of changes in the fair value of crude oil derivative contracts is recorded in Gain (loss) on crude contracts in the Consolidated Statements of Operations. The nonqualified employee savings plan is an unfunded savings plan through which participants seek a return via phantom investments in equity securities and/or mutual funds. The fair value of this liability was based on quoted prices for these equity securities and mutual funds. The income effect of changes in the fair value of the nonqualified employee savings plan is recorded in Selling and general expenses in the Consolidated Statements of Operations. The contingent consideration, related to two acquisitions in 2018 and 2019, is valued using a Monte Carlo simulation model. The income effect of changes in the fair value of the contingent consideration is recorded in Other (income) expense in the Consolidated Statements of Operations. The Company offsets certain assets and liabilities related to derivative contracts when the legal right of offset exists. There were no offsetting positions recorded at September 30, 2019 and December 31, 2018 . Subsequent to the balance sheet date, the Company has entered into additional derivative instruments to manage certain risks related to commodity prices, bringing the total outstanding as of October 30, 2019 to 45,000 barrels per day in WTI crude oil swap financial contracts for 2020, at an average price of $56.42 per barrel.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2018 and September 30, 2019 and the changes during the nine -month period ended September 30, 2019 , are presented net of taxes in the following table. (Thousands of dollars) Foreign Currency Translation Gains (Losses) Retirement and Postretirement Benefit Plan Adjustments Deferred Loss on Interest Rate Derivative Hedges Total Balance at December 31, 2018 $ (419,852 ) (182,036 ) (7,899 ) (609,787 ) 2019 components of other comprehensive income (loss): Before reclassifications to income and retained earnings 36,927 — — 36,927 Reclassifications to income — 8,277 ¹ 1,756 ² 10,033 Net other comprehensive income (loss) 36,927 8,277 1,756 46,960 Balance at September 30, 2019 $ (382,925 ) (173,759 ) (6,143 ) (562,827 ) 1 Reclassifications before taxes of $10,598 are included in the computation of net periodic benefit expense for the nine -month period ended September 30, 2019 . See Note H for additional information. Related income taxes of $2,321 are included in Income tax expense (benefit) for the nine -month period ended September 30, 2019 . 2 Reclassifications before taxes of $2,223 are included in Interest expense, net, for the nine -month period ended September 30, 2019 . Related income taxes of $467 are included in Income tax expense (benefit) for the nine -month period ended September 30, 2019 . See Note L for additional information.

Environmental and Other Conting

Environmental and Other Contingencies	9 Months Ended
	Sep. 30, 2019
Environmental Remediation Obligations [Abstract]
Environmental and Other Contingencies	Environmental and Other Contingencies The Company’s operations and earnings have been, and may be, affected by various forms of governmental action both in the United States and throughout the world. Examples of such governmental action include, but are by no means limited to: tax legislation changes, including tax rate changes and retroactive tax claims; royalty and revenue sharing changes; price controls; currency controls; allocation of supplies of crude oil and petroleum products and other goods; expropriation of property; restrictions and preferences affecting the issuance of oil and gas or mineral leases; restrictions on drilling and/or production; laws and regulations intended for the promotion of safety and the protection and/or remediation of the environment; governmental support for other forms of energy; and laws and regulations affecting the Company’s relationships with employees, suppliers, customers, stockholders and others. Governmental actions are often motivated by political considerations and may be taken without full consideration of their consequences or may be taken in response to actions of other governments. It is not practical to attempt to predict the likelihood of such actions, the form the actions may take or the effect such actions may have on the Company. Murphy and other companies in the oil and gas industry are subject to numerous federal, state, local and foreign laws and regulations dealing with the environment. Violation of federal or state environmental laws, regulations and permits can result in the imposition of significant civil and criminal penalties, injunctions and construction bans or delays. A discharge of hazardous substances into the environment could, to the extent such event is not insured, subject the Company to substantial expense, including both the cost to comply with applicable regulations and claims by neighboring landowners and other third parties for any personal injury and property damage that might result. The Company currently owns or leases, and has in the past owned or leased, properties at which hazardous substances have been or are being handled. Although the Company has used operating and disposal practices that were standard in the industry at the time, hazardous substances may have been disposed of or released on or under the properties owned or leased by the Company or on or under other locations where these wastes have been taken for disposal. In addition, many of these properties have been operated by third parties whose treatment and disposal or release of hydrocarbons or other wastes were not under Murphy’s control. Under existing laws, the Company could be required to remove or remediate previously disposed wastes (including wastes disposed of or released by prior owners or operators), to clean up contaminated property (including contaminated groundwater) or to perform remedial plugging operations to prevent future contamination. Certain of these historical properties are in various stages of negotiation, investigation, and/or cleanup and the Company is investigating the extent of any such liability and the availability of applicable defenses. The Company has retained certain liabilities related to environmental and operational matters at formerly owned U.S. refineries that were sold in 2011. The Company also obtained insurance covering certain levels of environmental exposures related to past operations of these refineries. The Company has not retained any environmental exposure associated with Murphy’s former U.S. marketing operations. The Company believes costs related to these sites will not have a material adverse effect on Murphy’s net income, financial condition or liquidity in a future period. There is the possibility that environmental expenditures could be required at currently unidentified sites, and new or revised regulations could require additional expenditures at known sites. However, based on information currently available to the Company, the amount of future remediation costs incurred, at known or currently unidentified sites, is not expected to have a material adverse effect on the Company’s future net income, cash flows or liquidity. Murphy and its subsidiaries are engaged in a number of other legal proceedings, all of which Murphy considers routine and incidental to its business. Based on information currently available to the Company, the ultimate resolution of environmental and legal matters referred to in this note is not expected to have a material adverse effect on the Company’s net income, financial condition or liquidity in a future period.

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Business Segments	Business Segments Information about business segments and geographic operations is reported in the following table. For geographic purposes, revenues are attributed to the country in which the sale occurs. Corporate, including interest income, other gains and losses (including foreign exchange gains/losses and realized and unrealized gains/losses on crude oil contracts), interest expense and unallocated overhead, is shown in the tables to reconcile the business segments to consolidated totals. ໿ (Millions of dollars) Total Assets Three Months Ended Three Months Ended External Income External Income Exploration and production ¹ United States $ 8,149.5 656.8 170.8 357.8 91.6 Canada 2,212.5 95.0 (9.1 ) 114.9 12.5 Other 253.3 1.9 (3.7 ) 19.9 1.3 Total exploration and production 10,615.3 753.7 158.0 492.6 105.4 Corporate 1,151.2 63.4 0.3 (2.1 ) (49.3 ) Assets/revenue/income from continuing operations 11,766.5 817.1 158.3 490.5 56.1 Discontinued operations, net of tax 17.2 — 953.4 — 37.8 Total $ 11,783.7 817.1 1,111.7 490.5 93.9 (Millions of dollars) Nine Months Ended Nine Months Ended External Income External Income Exploration and production ¹ United States $ 1,734.3 420.0 971.7 200.3 Canada 323.8 (7.5 ) 357.6 46.7 Other 7.9 (35.4 ) 19.9 (28.8 ) Total exploration and production 2,066.0 377.1 1,349.2 218.2 Corporate 125.6 (97.0 ) (61.4 ) (96.7 ) Assets/revenue/income from continuing operations 2,191.6 280.1 1,287.8 121.5 Discontinued operations, net of tax — 1,027.6 — 186.2 Total $ 2,191.6 1,307.7 1,287.8 307.7 1 Additional details about results of oil and gas operations are presented in the tables on pages 31 and 32.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Lessee Disclosure [Abstract]
Leases	Leases Significant Accounting Policy At inception, contracts are assessed for the presence of a lease according to criteria laid out by ASC 842. If a lease is present, further criteria is assessed to determine if the lease should be classified as an operating or finance lease. Operating leases are presented on the Consolidated Balance Sheet as Operating lease assets with the corresponding lease liabilities presented in Operating lease liabilities and Non-current operating lease liabilities. Finance lease assets are presented on the Consolidated Balance Sheet within Assets held for sale with the corresponding liabilities presented in Current maturities of long-term debt and Long-term debt. See Note E – Discontinued Operations for amounts in Assets held for sale. Generally, lease liabilities are recognized at commencement and based on the present value of the future minimum lease payments to be made over the lease term. Lease assets are then recognized based on the value of the lease liabilities. Where implicit lease rates are not determinable, the minimum lease payments are discounted using the Company’s collateralized incremental borrowing rates. Operating leases are expensed according to their nature and recognized in Lease operating expenses, Selling and general expenses or capitalized in the Consolidated Financial Statements. Finance leases are depreciated with expenses recognized in Depreciation, depletion, and amortization and Interest expense, net on the Consolidated Statement of Operations. Nature of Leases The Company has entered into various operating leases such as a gas processing plant, floating production storage and off-take vessels, buildings, marine vessels, vehicles, drilling rigs, pipelines and other oil and gas field equipment. Remaining lease terms range from 1 year to 17 years , some of which may include options to extend leases for multi-year periods and others which include options to terminate the leases within 1 month . Options to extend lease terms are at the Company’s discretion. Early lease terminations are a combination of both at Company discretion and mutual agreement between the Company and lessor. Purchase options also exist for certain leases. Related Expenses Expenses related to finance and operating leases included in the Consolidated Financial Statements are as follows: (Thousands of dollars) Financial Statement Category Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease 1,2 Lease operating expenses $ 62,260 178,164 Operating lease 2 Selling and general expense 2,700 9,044 Operating lease 2 Other operating expense 1,011 1,905 Operating lease 2 Property, plant and equipment 53,117 108,679 Operating lease 2 Asset retirement obligations — 3,024 Finance lease Amortization of asset Depreciation, depletion and amortization — 420 Interest on lease liabilities Interest expense, net — 202 Sublease income Other income (395 ) (1,034 ) Net lease expense $ 118,693 300,404 1 For the three months and nine months ended September 30, 2019 , includes variable lease expenses of $9.0 million and $22.8 million , respectively, primarily related to additional volumes processed at a gas processing plant. 2 The three months ended September 30, 2019 includes $10.9 million for Lease operating expense, $1.0 million for Selling and general expense, $37.4 million for Property, plant and equipment, net relating to short-term leases due within 12 months. For the nine months ended includes $33.3 million for Lease operating expense, $3.1 million for Selling and general expense, $86.2 million for Property, plant and equipment, net and $3.0 million for Asset retirement obligations relating to short-term leases due within 12 months. Expenses primarily relate to drilling rigs and other oil and gas field equipment. Maturity of Lease Liabilities ໿ (Thousands of dollars) Operating Leases 1 Finance Leases Total 2019 $ 53,597 267 53,864 2020 136,283 1,069 137,352 2021 57,190 1,069 58,259 2022 54,955 1,069 56,024 2023 54,453 1,069 55,522 Remaining 471,202 5,610 476,812 Total future minimum lease payments 827,680 10,153 837,833 Less imputed interest (253,403 ) (1,985 ) (255,388 ) Present value of lease liabilities 2 $ 574,277 8,168 582,445 1 Excludes $272.6 million of minimum lease payments for leases entered but not yet commenced. These payments relate to an expansion of an existing gas processing plant and payments are anticipated to commence at the end of 2020 for 20 years . 2 Includes both the current and long-term portion of the lease liabilities. Lease Term and Discount Rate  September 30, 2019 Weighted average remaining lease term: Operating leases 11 years Finance leases 10 years Weighted average discount rate: Operating leases 4.8 % Finance leases 4.7 % Other Information ໿ (Thousands of dollars) Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 140,424 Operating cash flows from finance leases 306 Financing cash flows from finance leases 510 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 31,281

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Acquisition	Acquisitions PAI Acquisition : In December 2018, the Company announced the completion of a transaction with Petrobras Americas Inc. (PAI) which was effective October 1, 2018. Through this transaction, Murphy acquired all PAI’s producing Gulf of Mexico assets along with certain blocks that hold deep exploration rights. This transaction added approximately 97 MMBOE (including noncontrolling interest, NCI) of proven reserves at December 31, 2018 . Under the terms of the transaction, Murphy paid cash consideration of $775.4 million and transferred a 20% interest in MP Gulf of Mexico, LLC (MP GOM), a subsidiary of Murphy, to PAI. Murphy also has an obligation to pay additional contingent consideration up to $150 million if certain sales thresholds are exceeded beginning in 2019 through 2025. Both companies contributed all of their current producing Gulf of Mexico assets into MP GOM. MP GOM is owned 80% by Murphy and 20% by PAI, with Murphy overseeing the operations. LLOG Acquisition : In June 2019, the Company announced the completion of a transaction with LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C., (LLOG) which was effective January 1, 2019. Through this transaction, Murphy acquired strategic deepwater Gulf of Mexico assets which added approximately 67 MMBOE of proven reserves at May 31, 2019. Under the terms of the transaction, Murphy paid cash consideration of $1,226.3 million and has an obligation to pay additional contingent consideration of up to $200 million in the event that certain revenue thresholds are exceeded between 2019 and 2022; and $50 million following first oil from certain development projects. The following table contains the preliminary purchase price allocations at fair value: (Thousands of dollars) PAI LLOG Cash consideration paid $ 775,413 1,226,261 Fair value of net assets contributed 154,469 — Contingent consideration 52,540 89,444 NCI in acquired assets 245,605 — Total purchase consideration $ 1,228,027 1,315,705 (Thousands of dollars) Fair value of Property, plant and equipment $ 1,610,790 1,340,206 Other assets 5,628 12,771 Less: Asset retirement obligations (388,391 ) (37,272 ) Total net assets $ 1,228,027 1,315,705 The fair value measurements of crude oil and natural gas properties and asset retirement obligations are based on inputs that are not observable in the market and therefore represent Level 3 inputs. The fair values of crude oil and natural gas properties and asset retirement obligations were measured using valuation techniques that convert expected future cash flows to a single discounted amount. Significant inputs to the valuation of crude oil and natural gas properties included estimates of: (i) proved and probable reserves; (ii) production rates and related development timing; (iii) future operating and development costs; (iv) future commodity prices; and (v) a market-based weighted average discount rate. These inputs require significant judgments and estimates by management at the time of the valuation, are sensitive, and may be subject to change. Certain data necessary to complete the purchase price allocations are not yet available, and includes, but is not limited to, analysis of the underlying tax basis of the acquired assets and assumed liabilities as well as the final purchase price adjustments to be settled in 2019. We expect to complete the purchase price allocations during the 12-month periods following the acquisition dates of November 30, 2018 and May 31, 2019, during which time the value of the assets and liabilities may be revised as appropriate. Results of Operations Murphy’s Consolidated Statement of Operations for the three months ended September 30, 2019 , included additional revenues of $263.7 million and pre-tax income of $99.6 million attributable to the acquired PAI assets. For the nine months ended September 30, 2019 , additional revenues of $710.2 million and pre-tax income of $369.7 million attributable to the acquired PAI assets were included in the Consolidated Statement of Operations. Murphy’s Consolidated Statement of Operations for the three month period ended September 30, 2019 , included additional revenues of $126.4 million and pre-tax income of $29.2 million attributable to the acquired LLOG assets. For the nine months ended September 30, 2019 , additional revenues of $159.8 million and pre-tax income of $34.3 million attributable to the acquired LLOG assets. Pro Forma Financial Information The following pro forma condensed combined financial information was derived from historical financial statements of Murphy, PAI and LLOG and gives effect to the transaction as if it had occurred on January 1, 2018. The information below reflects pro forma adjustments based on available information and certain assumptions that we believe are reasonable. The pro forma results of operations do not include any cost savings or other synergies that we expect to realize from the transaction or any estimated costs that have been, or will be, incurred by us to integrate the PAI assets. The pro forma condensed combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have occurred had the transaction taken place on January 1, 2018; furthermore, the financial information is not intended to be a projection of future results. (Thousands of dollars, except per share amounts) Three Months Ended Nine Months Ended Revenues $ 855,689 2,383,296 Net Income Attributable to Murphy 266,275 823,704  Net Income Attributable to Murphy per Common Share Basic $ 1.54 4.76 Diluted 1.53 4.73

Subsequent Event

Subsequent Event	9 Months Ended
	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Event	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:13px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Subsequent Event</font></div></div>

New Accounting Principles and_2

New Accounting Principles and Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Principles Adopted Leases. In February 2016, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update (ASU) 2016-02 (Topic 842) to increase transparency and comparability among companies by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The main difference between previous Generally Accepted Accounting Principles (GAAP) and this ASU is the recognition of right-of-use assets and lease liabilities by lessees for those leases classified as operating leases under previous GAAP. The company adopted the standard in the first quarter of 2019 utilizing the modified retrospective transition method through a cumulative-effect adjustment at the beginning of the first quarter of 2019 . The Company has elected the package of practical expedients, which allows the Company not to reassess (1) whether any expired or existing contracts as of the adoption date are or contain a lease, (2) lease classification for any expired or existing leases as of the adoption date and (3) initial direct costs for any existing leases as of the adoption date. The Company did not elect to apply the hindsight practical expedient when determining lease term and assessing impairment of right-of-use assets. The adoption of ASU 2016-02 resulted in the recognition of right-of-use assets of $618.1 million , current lease liabilities for operating leases of approximately $155.5 million , non-current lease liabilities of $468.4 million and a cumulative-effect adjustment to credit retained earnings of $116.8 million on its Consolidated Balance Sheets, with no material impact to its Consolidated Statements of Operations. See Note P for further information regarding the impact of the adoption of ASU 2016-02 on the Company’s financial statements. Compensation – Stock Compensation. In June 2018, the FASB issued an ASU 2018-07 which supersedes existing guidance for equity-based payments to nonemployees and expands the scope of guidance for stock compensation to include all share-based payment arrangements related to the acquisition of goods and services from both nonemployees and employees. As a result, the same guidance that provides for employee share-based payments, including most of its requirements related to classification and measurement, applies to nonemployee share-based payment arrangements. The Company adopted this guidance during the first quarter of 2019 and it did not have material impact on its consolidated financial statements. Recent Accounting Pronouncements Financial Instruments – Credit Losses. In June 2016, the FASB issued ASU 2016-13 which replaces the impairment model for most financial assets, including trade receivables, from the incurred loss methodology to a forward-looking expected loss model that will result in earlier recognition of credit losses. The amendments in this ASU are effective for fiscal years beginning after December 15, 2019, with early adoption permitted, and is to be applied on a modified retrospective basis. The Company is currently assessing the potential impact of this ASU, but does not expect a material impact to its consolidated financial statements. Fair Value Measurement. In August 2018, the FASB issued ASU 2018-13 which modifies disclosure requirements related to fair value measurement. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Implementation on a prospective or retrospective basis varies by specific disclosure requirement. Early adoption is permitted. The standard also allows for early adoption of any removed or modified disclosures upon issuance of this ASU while delaying adoption of the additional disclosures until their effective date. The Company is currently assessing the potential impact of this ASU to its consolidated financial statements. Compensation-Retirement Benefits-Defined Benefit Plans-General. In August 2018, the FASB issued ASU 2018-14 which modifies the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. For public companies, the amendments in this ASU are effective for fiscal years beginning after December 15, 2020, with early adoption permitted, and is to be applied on a retrospective basis to all periods presented. The Company is currently assessing the potential impact of this ASU to its consolidated financial statements.
Nature of Business	NATURE OF BUSINESS – Murphy Oil Corporation is an international oil and gas company that conducts its business through various operating subsidiaries. The Company primarily produces oil and natural gas in the United States and Canada and conducts oil and natural gas exploration activities worldwide. Effective January 1, 2019, Malaysia was reported as discontinued operations as the sale represents a strategic shift that has a major effect on the Company’s operations and financial results. Prior periods have been reclassified to conform with the current presentation. See Note D – Property, Plant, and Equipment and Note E – Discontinued Operations and Assets Held for Sale for more information regarding the sale of this asset.
Leases	Significant Accounting Policy At inception, contracts are assessed for the presence of a lease according to criteria laid out by ASC 842. If a lease is present, further criteria is assessed to determine if the lease should be classified as an operating or finance lease. Operating leases are presented on the Consolidated Balance Sheet as Operating lease assets with the corresponding lease liabilities presented in Operating lease liabilities and Non-current operating lease liabilities. Finance lease assets are presented on the Consolidated Balance Sheet within Assets held for sale with the corresponding liabilities presented in Current maturities of long-term debt and Long-term debt. See Note E – Discontinued Operations for amounts in Assets held for sale. Generally, lease liabilities are recognized at commencement and based on the present value of the future minimum lease payments to be made over the lease term. Lease assets are then recognized based on the value of the lease liabilities. Where implicit lease rates are not determinable, the minimum lease payments are discounted using the Company’s collateralized incremental borrowing rates. Operating leases are expensed according to their nature and recognized in Lease operating expenses, Selling and general expenses or capitalized in the Consolidated Financial Statements. Finance leases are depreciated with expenses recognized in Depreciation, depletion, and amortization and Interest expense, net on the Consolidated Statement of Operations.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	For the three-months ended September 30, 2019 and 2018 , the Company recognized $750.3 million and $475.5 million , respectively, from contracts with customers for the sales of oil, natural gas liquids and natural gas. For the nine -months ended September 30, 2019 and 2018 the Company recognized $2,060.1 million and $1,330.4 million , respectively, from contracts with customers for the sales of oil, natural gas liquids and natural gas. Three Months Ended Nine Months Ended (Thousands of dollars) 2019 2018 2019 2018 Net crude oil and condensate revenue United States Onshore $ 219,515 227,022 547,756 612,194 Offshore 398,518 95,059 1,090,462 264,174 Canada Onshore 31,758 34,504 88,730 87,018 Offshore 28,408 35,929 115,686 141,313 Other 1,933 3,156 7,908 3,156 Total crude oil and condensate revenue 680,132 395,670 1,850,542 1,107,855 Net natural gas liquids revenue United States Onshore 5,557 19,196 22,497 48,615 Offshore 8,414 3,600 18,184 9,013 Canada Onshore 2,751 4,140 8,987 11,062 Total natural gas liquids revenue 16,722 26,936 49,668 68,690 Net natural gas revenue United States Onshore 5,848 8,833 20,762 25,670 Offshore 15,879 3,965 29,575 11,161 Canada Onshore 31,756 40,054 109,580 117,023 Total natural gas revenue 53,483 52,852 159,917 153,854 Total revenue from contracts with customers 750,337 475,458 2,060,127 1,330,399 Gain (loss) on crude contracts 63,247 (2,223 ) 121,163 (69,349 ) Gain on sale of assets and other income 1 3,493 17,276 10,283 26,713 Total revenue $ 817,077 490,511 2,191,573 1,287,763 1 Gain on sale of Malaysia operations of $960.0 million is reported in discontinued operations. See Note E.
Current Long-Term Contracts Outstanding	As of September 30, 2019 , the Company had the following sales contracts in place which are expected to generate revenue from sales to customers for a period of 12 months or more starting at the inception of the contract: ໿ Current Long-Term Contracts Outstanding at September 30, 2019 Location Commodity End Date Description Approximate Volumes U.S. Oil Q4 2021 Fixed quantity delivery in Eagle Ford 17,000 BOED U.S. Oil, Gas and NGL Q2 2026 Deliveries from dedicated acreage in Eagle Ford As produced U.S. NGL Q4 2020 Dedicated acreage delivery in GOM As produced Canada Gas Q4 2020 Contracts to sell natural gas at Alberta AECO fixed prices 59 MMCFD Canada Gas Q4 2020 Contracts to sell natural gas at USD Index pricing 60 MMCFD Canada Gas Q4 2021 Contracts to sell natural gas at USD Index pricing 10 MMCFD Canada Gas Q4 2024 Contracts to sell natural gas at USD Index pricing 30 MMCFD Canada Gas Q4 2026 Contracts to sell natural gas at USD Index pricing 38 MMCFD Canada Gas Q4 2026 Contracts to sell natural gas at USD Index pricing 11 MMCFD

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2019
Property, Plant and Equipment [Abstract]
Net Changes in Capitalized Exploratory Well Costs	The following table reflects the net changes in capitalized exploratory well costs during the nine -month periods ended September 30, 2019 and 2018 . (Thousands of dollars) 2019 2018 Beginning balance at January 1 $ 207,855 155,103 Additions pending the determination of proved reserves 86,025 41,560 Reclassifications to proved properties based on the determination of proved reserves — (2,214 ) Capitalized exploratory well costs charged to expense (13,145 ) (4,521 ) Balance at September 30 $ 280,735 189,928
Aging of Capitalized Exploratory Well Costs	The following table provides an aging of capitalized exploratory well costs based on the date the drilling was completed for each individual well and the number of projects for which exploratory well costs have been capitalized. The projects are aged based on the last well drilled in the project.  September 30,  2019 2018 (Thousands of dollars) Amount No. of Wells No. of Projects Amount No. of Wells No. of Projects Aging of capitalized well costs: Zero to one year $ 64,711 5 5 $ 46,813 1 1 One to two years 63,615 1 1 41,051 3 2 Two to three years 27,500 1 — 5,208 1 1 Three years or more 124,909 5 — 96,856 4 1  $ 280,735 12 6 $ 189,928 9 5

Discontinued Operations and A_2

Discontinued Operations and Assets Held for Sale (Tables)	9 Months Ended
	Sep. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Results of Operations Associated with Discontinued Operations	The results of operations associated with discontinued operations for the three and nine -month period ended September 30, 2019 and 2018 were as follows:  Three Months Ended Nine Months Ended (Thousands of dollars) 2019 2018 2019 2018 Revenues 1 $ 972,737 201,370 1,328,110 640,806 Costs and expenses Lease operating expenses 6,262 49,390 127,138 152,406 Depreciation, depletion and amortization — 44,326 33,697 139,566 Other costs and expenses (benefits) 11,078 36,642 81,560 55,665 Income before taxes 955,397 71,012 1,085,715 293,169 Income tax expense 2,029 33,200 58,083 106,981 Income from discontinued operations $ 953,368 37,812 1,027,632 186,188 1 In 2019, includes $960.0 million gain on sale of Malaysia operations.
Major Categories of Assets and Liabilities Reflected as Held for Sale	The following table presents the carrying value of the major categories of assets and liabilities of the Brunei exploration and production and the U.K. refining and marketing operations reflected as held for sale on the Company’s Consolidated Balance Sheet at September 30, 2019 . As of December 31, 2018 , the Malaysian exploration and production business was also held for sale. The closing of this sale occurred on July 10, 2019. (Thousands of dollars) September 30, December 31, Current assets Cash $ 25,307 44,669 Accounts receivable 3,859 103,158 Inventories 406 7,887 Prepaid expenses and other 1,847 18,151 Property, Plant, and Equipment, net 87,556 — Deferred income taxes and other assets 9,440 — Total current assets associated with assets held for sale 128,415 173,865 Non-current assets Property, Plant, and Equipment, net — 1,325,431 Deferred income taxes and other assets — 219,577 Total non-current assets associated with assets held for sale $ — 1,545,008 Current liabilities Accounts payable $ 8,563 203,236 Other accrued liabilities 448 55,273 Current maturities of long-term debt (finance lease) 696 9,915 Taxes payable 752 18,034 Long-term debt (finance lease) 7,420 — Asset retirement obligation 235 — Total current liabilities associated with assets held for sale 18,114 286,458 Non-current liabilities Long-term debt — 117,816 Asset retirement obligation — 274,904 Total non-current liabilities associated with assets held for sale $ — 392,720

Other Financial Information (Ta

Other Financial Information (Tables)	9 Months Ended
	Sep. 30, 2019
Other Financial Information [Abstract]
Noncash Operating Working Capital (Increase) Decrease	Additional disclosures regarding cash flow activities are provided below. ໿  Nine Months Ended (Thousands of dollars) 2019 2018 Net (increase) decrease in operating working capital, excluding cash and cash equivalents: (Increase) decrease in accounts receivable ² $ (128,698 ) (32,372 ) (Increase) decrease in inventories 4,398 21,367 (Increase) decrease in prepaid expenses (3,745 ) (3 ) Increase (decrease) in accounts payable and accrued liabilities ² 165,224 1,185 Increase (decrease) in income taxes payable 3,078 322 Net (increase) decrease in noncash operating working capital $ 40,257 (9,501 ) Supplementary disclosures: Cash income taxes paid, net of refunds $ (4,563 ) (4,508 ) Interest paid, net of amounts capitalized of $0.2 million in 2019 and $0 in 2018 137,116 113,820 Non-cash investing activities: Asset retirement costs capitalized ¹ $ 48,203 2,907 (Increase) decrease in capital expenditure accrual (52,659 ) 27,551  1 Includes asset retirement obligations assumed as part of the LLOG acquisition of $37.3 million . See Note Q. 2 Excludes receivable/payable balances relating to mark-to-market of crude contracts and contingent consideration relating to acquisitions.

Employee and Retiree Benefit _2

Employee and Retiree Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2019
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Expense	The table that follows provides the components of net periodic benefit expense for the three and nine -month periods ended September 30, 2019 and 2018 .  Three Months Ended September 30,  Pension Benefits Other Postretirement Benefits (Thousands of dollars) 2019 2018 2019 2018 Service cost $ 2,064 2,252 421 492 Interest cost 7,151 6,716 945 874 Expected return on plan assets (6,455 ) (7,476 ) — — Amortization of prior service cost (credit) 248 254 (98 ) (10 ) Recognized actuarial loss 3,516 5,197 — — Net periodic benefit expense $ 6,524 6,943 1,268 1,356 Nine Months Ended September 30, Pension Benefits Other Postretirement Benefits (Thousands of dollars) 2019 2018 2019 2018 Service cost $ 6,188 6,761 1,261 1,479 Interest cost 21,402 20,160 2,833 2,622 Expected return on plan assets (19,285 ) (22,435 ) — — Amortization of prior service cost (credit) 741 767 (293 ) (29 ) Recognized actuarial loss 10,538 15,593 — — Net periodic benefit expense $ 19,584 20,846 3,801 4,072

Incentive Plans (Tables)

Incentive Plans (Tables)	9 Months Ended
	Sep. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Plans, Amounts Recognized	Amounts recognized in the financial statements with respect to share-based plans are shown in the following table:  Nine Months Ended (Thousands of dollars) 2019 2018 Compensation charged against income before tax benefit $ 39,884 36,348 Related income tax benefit recognized in income 6,204 5,532

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share	The following table reports the weighted-average shares outstanding used for these computations.  Three Months Ended Nine Months Ended (Weighted-average shares) 2019 2018 2019 2018 Basic method 160,365,705 173,047,246 167,310,202 172,949,450 Dilutive stock options and restricted stock units 614,333 1,128,021 795,025 1,252,310 Diluted method 160,980,038 174,175,267 168,105,227 174,201,760
Anti Dilutive Securities Not Included in Computation of Diluted EPS	The following table reflects certain options to purchase shares of common stock that were outstanding during the periods presented but were not included in the computation of diluted shares above because the incremental shares from the assumed conversion were antidilutive.  Three Months Ended Nine Months Ended  2019 2018 2019 2018 Antidilutive stock options excluded from diluted shares 2,903,768 2,870,549 3,016,361 3,544,087 Weighted average price of these options $ 44.65 $ 54.06 $ 45.38 $ 50.49

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective Income Tax Rates	For the three and nine -month periods ended September 30, 2019 and 2018 , the Company’s effective income tax rates were as follows:  2019 2018 Three months ended September 30, 10.6% 24.1% Nine months ended September 30, 12.1% (300.5)%

Financial Instruments and Ris_2

Financial Instruments and Risk Management (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments Not Designated as Hedging Instruments	At September 30, 2019 and December 31, 2018 , the fair value of derivative instruments not designated as hedging instruments are presented in the following table.  September 30, 2019 December 31, 2018 (Thousands of dollars) Asset (Liability) Derivatives Asset (Liability) Derivatives Type of Derivative Contract Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity Accounts receivable $ 104,358 Accounts receivable $ 3,837
Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments	For the three-month and nine -month periods ended September 30, 2019 and September 30, 2018 , the gains and losses recognized in the Consolidated Statements of Operations for derivative instruments not designated as hedging instruments are presented in the following table.  Gain (Loss) Gain (Loss) (Thousands of dollars) Three Months Ended Nine months ended September 30, Type of Derivative Contract Statement of Operations Location 2019 2018 2019 2018 Commodity Gain (loss) on crude contracts $ 63,247 (2,223 ) 121,163 (69,349 )
Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis	The carrying value of assets and liabilities recorded at fair value on a recurring basis at September 30, 2019 and December 31, 2018 , are presented in the following table.  September 30, 2019 December 31, 2018 (Thousands of dollars) Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Assets: Commodity derivative contracts $ — 104,358 — 104,358 — 3,837 — 3,837  $ — 104,358 — 104,358 — 3,837 — 3,837  Liabilities: Nonqualified employee savings plans $ 15,499 — — 15,499 13,845 — — 13,845 Contingent consideration — — 137,688 137,688 — — 47,730 47,730  $ 15,499 — 137,688 153,187 13,845 — 47,730 61,575

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2018 and September 30, 2019 and the changes during the nine -month period ended September 30, 2019 , are presented net of taxes in the following table. (Thousands of dollars) Foreign Currency Translation Gains (Losses) Retirement and Postretirement Benefit Plan Adjustments Deferred Loss on Interest Rate Derivative Hedges Total Balance at December 31, 2018 $ (419,852 ) (182,036 ) (7,899 ) (609,787 ) 2019 components of other comprehensive income (loss): Before reclassifications to income and retained earnings 36,927 — — 36,927 Reclassifications to income — 8,277 ¹ 1,756 ² 10,033 Net other comprehensive income (loss) 36,927 8,277 1,756 46,960 Balance at September 30, 2019 $ (382,925 ) (173,759 ) (6,143 ) (562,827 ) 1 Reclassifications before taxes of $10,598 are included in the computation of net periodic benefit expense for the nine -month period ended September 30, 2019 . See Note H for additional information. Related income taxes of $2,321 are included in Income tax expense (benefit) for the nine -month period ended September 30, 2019 . 2 Reclassifications before taxes of $2,223 are included in Interest expense, net, for the nine -month period ended September 30, 2019 . Related income taxes of $467 are included in Income tax expense (benefit) for the nine -month period ended September 30, 2019 . See Note L for additional information.

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Information	Information about business segments and geographic operations is reported in the following table. For geographic purposes, revenues are attributed to the country in which the sale occurs. Corporate, including interest income, other gains and losses (including foreign exchange gains/losses and realized and unrealized gains/losses on crude oil contracts), interest expense and unallocated overhead, is shown in the tables to reconcile the business segments to consolidated totals. ໿ (Millions of dollars) Total Assets Three Months Ended Three Months Ended External Income External Income Exploration and production ¹ United States $ 8,149.5 656.8 170.8 357.8 91.6 Canada 2,212.5 95.0 (9.1 ) 114.9 12.5 Other 253.3 1.9 (3.7 ) 19.9 1.3 Total exploration and production 10,615.3 753.7 158.0 492.6 105.4 Corporate 1,151.2 63.4 0.3 (2.1 ) (49.3 ) Assets/revenue/income from continuing operations 11,766.5 817.1 158.3 490.5 56.1 Discontinued operations, net of tax 17.2 — 953.4 — 37.8 Total $ 11,783.7 817.1 1,111.7 490.5 93.9 (Millions of dollars) Nine Months Ended Nine Months Ended External Income External Income Exploration and production ¹ United States $ 1,734.3 420.0 971.7 200.3 Canada 323.8 (7.5 ) 357.6 46.7 Other 7.9 (35.4 ) 19.9 (28.8 ) Total exploration and production 2,066.0 377.1 1,349.2 218.2 Corporate 125.6 (97.0 ) (61.4 ) (96.7 ) Assets/revenue/income from continuing operations 2,191.6 280.1 1,287.8 121.5 Discontinued operations, net of tax — 1,027.6 — 186.2 Total $ 2,191.6 1,307.7 1,287.8 307.7 1 Additional details about results of oil and gas operations are presented in the tables on pages 31 and 32.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Lessee Disclosure [Abstract]
Summary of Lease Related Expenses	Expenses related to finance and operating leases included in the Consolidated Financial Statements are as follows: (Thousands of dollars) Financial Statement Category Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease 1,2 Lease operating expenses $ 62,260 178,164 Operating lease 2 Selling and general expense 2,700 9,044 Operating lease 2 Other operating expense 1,011 1,905 Operating lease 2 Property, plant and equipment 53,117 108,679 Operating lease 2 Asset retirement obligations — 3,024 Finance lease Amortization of asset Depreciation, depletion and amortization — 420 Interest on lease liabilities Interest expense, net — 202 Sublease income Other income (395 ) (1,034 ) Net lease expense $ 118,693 300,404 1 For the three months and nine months ended September 30, 2019 , includes variable lease expenses of $9.0 million and $22.8 million , respectively, primarily related to additional volumes processed at a gas processing plant. 2 The three months ended September 30, 2019 includes $10.9 million for Lease operating expense, $1.0 million for Selling and general expense, $37.4 million for Property, plant and equipment, net relating to short-term leases due within 12 months. For the nine months ended includes $33.3 million for Lease operating expense, $3.1 million for Selling and general expense, $86.2 million for Property, plant and equipment, net and $3.0 million for Asset retirement obligations relating to short-term leases due within 12 months. Expenses primarily relate to drilling rigs and other oil and gas field equipment.
Schedule of Maturity of Lease Liabilities	Maturity of Lease Liabilities ໿ (Thousands of dollars) Operating Leases 1 Finance Leases Total 2019 $ 53,597 267 53,864 2020 136,283 1,069 137,352 2021 57,190 1,069 58,259 2022 54,955 1,069 56,024 2023 54,453 1,069 55,522 Remaining 471,202 5,610 476,812 Total future minimum lease payments 827,680 10,153 837,833 Less imputed interest (253,403 ) (1,985 ) (255,388 ) Present value of lease liabilities 2 $ 574,277 8,168 582,445 1 Excludes $272.6 million of minimum lease payments for leases entered but not yet commenced. These payments relate to an expansion of an existing gas processing plant and payments are anticipated to commence at the end of 2020 for 20 years . 2 Includes both the current and long-term portion of the lease liabilities.
Summary of Lease Term and Discount Rate	Lease Term and Discount Rate  September 30, 2019 Weighted average remaining lease term: Operating leases 11 years Finance leases 10 years Weighted average discount rate: Operating leases 4.8 % Finance leases 4.7 %
Summary of Other Lease Information	Other Information ໿ (Thousands of dollars) Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 140,424 Operating cash flows from finance leases 306 Financing cash flows from finance leases 510 Right-of-use assets obtained in exchange for lease liabilities: Operating leases $ 31,281

Acquisition (Tables)

Acquisition (Tables)	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Preliminary Purchase Price Allocation	The following table contains the preliminary purchase price allocations at fair value: (Thousands of dollars) PAI LLOG Cash consideration paid $ 775,413 1,226,261 Fair value of net assets contributed 154,469 — Contingent consideration 52,540 89,444 NCI in acquired assets 245,605 — Total purchase consideration $ 1,228,027 1,315,705 (Thousands of dollars) Fair value of Property, plant and equipment $ 1,610,790 1,340,206 Other assets 5,628 12,771 Less: Asset retirement obligations (388,391 ) (37,272 ) Total net assets $ 1,228,027 1,315,705
Pro Forma Financial Information	The information below reflects pro forma adjustments based on available information and certain assumptions that we believe are reasonable. The pro forma results of operations do not include any cost savings or other synergies that we expect to realize from the transaction or any estimated costs that have been, or will be, incurred by us to integrate the PAI assets. The pro forma condensed combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have occurred had the transaction taken place on January 1, 2018; furthermore, the financial information is not intended to be a projection of future results. (Thousands of dollars, except per share amounts) Three Months Ended Nine Months Ended Revenues $ 855,689 2,383,296 Net Income Attributable to Murphy 266,275 823,704  Net Income Attributable to Murphy per Common Share Basic $ 1.54 4.76 Diluted 1.53 4.73

Nature of Business and Interi_2

Nature of Business and Interim Financial Statements Nature of Business and Interim Financial Statements (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)entity
Accounting Policies [Abstract]
Ownership interest in variable interest entities	0.50%
Number of variable interest entities (in entities) | entity	2
Net investment in Delta House | $	$ 3.7

New Accounting Principles and_3

New Accounting Principles and Recent Accounting Pronouncements Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	[1]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 618,100	$ 565,987		$ 565,987		$ 0
Current operating lease liabilities	155,500	117,071		117,071		$ 0
Non-current lease liabilities	468,400
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment to retained earnings	$ 116,800	$ 0	$ 0	$ 116,768	$ 0
[1]	Reclassified to conform to current presentation (see Note A).

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)itemsegment	Dec. 31, 2018USD ($)
Revenue from Contract with Customer [Abstract]
Number of geographic segments | segment	2
Number of revenue streams | item	3
Receivables from contracts with customers | $	$ 146.4	$ 147.6

Revenue from Contracts with C_4

Revenue from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2019		Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 750,337		$ 475,458	[1]	$ 2,060,127	$ 1,330,399	[1]
Gain (loss) on crude contracts	63,247	[2]	(2,223)	[1]	121,163	(69,349)	[1]
Gain on sale of assets and other income	3,493		17,276	[1]	10,283	26,713	[1]
Total revenues	817,077		490,511	[1]	2,191,573	1,287,763	[1]
Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	680,132		395,670		1,850,542	1,107,855
Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	16,722		26,936		49,668	68,690
Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	53,483		52,852		159,917	153,854
United States | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	219,515		227,022		547,756	612,194
United States | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,557		19,196		22,497	48,615
United States | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	5,848		8,833		20,762	25,670
United States Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	398,518		95,059		1,090,462	264,174
United States Offshore | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	8,414		3,600		18,184	9,013
United States Offshore | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	15,879		3,965		29,575	11,161
Canada | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	31,758		34,504		88,730	87,018
Canada | Net natural gas liquids revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	2,751		4,140		8,987	11,062
Canada | Net natural gas revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	31,756		40,054		109,580	117,023
Canada Offshore | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	28,408		35,929		115,686	141,313
Other | Net crude oil and condensate revenue
Disaggregation of Revenue [Line Items]
Total revenue from contracts with customers	$ 1,933		$ 3,156		$ 7,908	$ 3,156
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (see Note A).

Revenue from Contracts with C_5

Revenue from Contracts with Customers (Current Long-Term Contracts Outstanding) (Details)	Sep. 30, 2019MMcf / dBoe / d
Canada | Dedicated acreage delivery in GOM
Disaggregation of Revenue [Line Items]
Approximate Volumes	38
Q4 2021 | United States
Disaggregation of Revenue [Line Items]
Approximate Volumes | Boe / d	17,000
Q4 2021 | Canada | Dedicated acreage delivery in GOM
Disaggregation of Revenue [Line Items]
Approximate Volumes	10
Q4 2020 | Canada | Deliveries from dedicated acreage in Eagle Ford
Disaggregation of Revenue [Line Items]
Approximate Volumes	59
Q4 2020 | Canada | Dedicated acreage delivery in GOM
Disaggregation of Revenue [Line Items]
Approximate Volumes	60
Q4 2024 | Canada | Dedicated acreage delivery in GOM
Disaggregation of Revenue [Line Items]
Approximate Volumes	30
Q4 2026 | Canada | Dedicated acreage delivery in GOM
Disaggregation of Revenue [Line Items]
Approximate Volumes	11

Property, Plant and Equipment N

Property, Plant and Equipment Narrative - (Details) $ in Thousands	Jul. 31, 2019USD ($)entity	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)		Dec. 31, 2018USD ($)	Dec. 31, 2016USD ($)	Jan. 01, 2019USD ($)	Dec. 31, 2017USD ($)
Property, Plant and Equipment [Line Items]
Well Costs		$ 280,735	$ 189,928		$ 207,855			$ 155,103
Exploratory well costs capitalized more than one year		216,000
Proceeds from sales of property, plant and equipment		19,072	921	[1]
Gain (loss) on sale of assets		363	6	[1]
Athabasca Oil Corporation | Canadian Subsidiary
Property, Plant and Equipment [Line Items]
Cost of acquired assets, carried interest						$ 168,000
Carried interest paid		131,600
Malaysia Subsidiaries
Property, Plant and Equipment [Line Items]
Number of businesses divested | entity	2
Cash received from divestiture	$ 2,000,000
Gain (loss) on disposition of business	960,000	960,000
Contingent bonus payment	$ 100,000
Montney Natural Gas Fields
Property, Plant and Equipment [Line Items]
Proceeds from sales of property, plant and equipment						$ 414,100
Gain (loss) on sale of assets			$ 5,700		187,000
Deferred gain on sale of property					$ 116,800		$ 116,800
Brunei
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year		57,400
Vietnam
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year		67,500
Gulf of Mexico
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year		63,600
United States
Property, Plant and Equipment [Line Items]
Exploratory well costs capitalized more than one year		$ 27,500
Kaybob Duvernay Lands, Alberta | Canadian Subsidiary
Property, Plant and Equipment [Line Items]
Interest in assets acquired						70.00%
Placid Montney Lands, Alberta | Canadian Subsidiary
Property, Plant and Equipment [Line Items]
Interest in assets acquired						30.00%
[1]	Reclassified to conform to current presentation (See Note A).

Property, Plant and Equipment_2

Property, Plant and Equipment Net Changes in Capitalized Exploratory Well Costs - (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Beginning balance at January 1	$ 207,855	$ 155,103
Additions pending the determination of proved reserves	86,025	41,560
Reclassifications to proved properties based on the determination of proved reserves	0	(2,214)
Capitalized exploratory well costs charged to expense	(13,145)	(4,521)
Balance at September 30	$ 280,735	$ 189,928

Property, Plant and Equipment A

Property, Plant and Equipment Aging of Capitalized Exploratory Well Costs - (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)wellproject	Sep. 30, 2018USD ($)wellproject	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 280,735	$ 189,928	$ 207,855	$ 155,103
No. of Wells (in wells) | well	12	9
No. of Projects (in projects) | project	6	5
Zero to one year
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 64,711	$ 46,813
No. of Wells (in wells) | well	5	1
No. of Projects (in projects) | project	5	1
One to two years
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 63,615	$ 41,051
No. of Wells (in wells) | well	1	3
No. of Projects (in projects) | project	1	2
Two to three years
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 27,500	$ 5,208
No. of Wells (in wells) | well	1	1
No. of Projects (in projects) | project	0	1
Three years or more
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]
Amount | $	$ 124,909	$ 96,856
No. of Wells (in wells) | well	5	4
No. of Projects (in projects) | project	0	1

Discontinued Operations and A_3

Discontinued Operations and Assets Held for Sale (Narrative) (Details) - USD ($) $ in Millions	Jul. 31, 2019	Sep. 30, 2019
Malaysia Subsidiaries
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of Malaysia operations	$ 960	$ 960

Discontinued Operations and A_4

Discontinued Operations and Assets Held for Sale (Results of Operations Associated with Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Revenues 1	$ 972,737	$ 201,370		$ 1,328,110	$ 640,806
Lease operating expenses	6,262	49,390		127,138	152,406
Depreciation, depletion and amortization	0	44,326		33,697	139,566
Other costs and expenses (benefits)	11,078	36,642		81,560	55,665
Income before taxes	955,397	71,012		1,085,715	293,169
Income tax expense	2,029	33,200		58,083	106,981
Income from discontinued operations	$ 953,368	$ 37,812	[1]	$ 1,027,632	$ 186,188	[1],[2]
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (See Note A).

Discontinued Operations and A_5

Discontinued Operations and Assets Held for Sale (Major Categories of Assets and Liabilities Reflected as Held for Sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Total current assets associated with assets held for sale	$ 128,415	$ 173,865	[1]
Non-current assets
Total non-current assets associated with assets held for sale	0	1,545,008	[1]
Current liabilities
Accounts payable	8,563	203,236
Other accrued liabilities	448	55,273
Current maturities of long-term debt (finance lease)	696	9,915
Taxes payable	752	18,034
Long-term debt (finance lease)	7,420	0
Asset retirement obligation	235	0
Total current liabilities associated with assets held for sale	18,114	286,458	[1]
Non-current liabilities
Long-term debt	0	117,816
Asset retirement obligation	0	274,904
Total non-current liabilities associated with assets held for sale	0	392,720	[1]
Discontinued Operations, Held-for-sale or Disposed of by Sale
Current assets
Cash	25,307	44,669
Accounts receivable	3,859	103,158
Inventories	406	7,887
Prepaid expenses and other	1,847	18,151
Property, Plant, and Equipment, net	87,556	0
Deferred income taxes and other assets	9,440	0
Total current assets associated with assets held for sale	128,415	173,865
Non-current assets
Property, Plant, and Equipment, net	0	1,325,431
Non-current deferred income taxes and other assets	0	219,577
Total non-current assets associated with assets held for sale	$ 0	$ 1,545,008
[1]	Reclassified to conform to current presentation (see Note A).

Financing Arrangements and De_2

Financing Arrangements and Debt (Narrative) (Details)	9 Months Ended
	Sep. 30, 2019USD ($)
New Term Credit Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	$ 500,000,000
2018 Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility maximum borrowing capacity	1,600,000,000
Amount outstanding	$ 0
Interest rate	3.51%
2018 Revolving Credit Facility | Letter of Credit
Line of Credit Facility [Line Items]
Amount outstanding	$ 4,600,000

Other Financial Information (No

Other Financial Information (Noncash Operating Working Capital (Increase) Decrease) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Other Financial Information [Abstract]
Asset retirement obligations	$ 37,300
Net (increase) decrease in operating working capital, excluding cash and cash equivalents:
(Increase) decrease in accounts receivable	(128,698)	$ (32,372)
(Increase) decrease in inventories	4,398	21,367
(Increase) decrease in prepaid expenses	(3,745)	(3)
Increase (decrease) in accounts payable and accrued liabilities	165,224	1,185
Increase (decrease) in income taxes payable	3,078	322
Net (increase) decrease in noncash operating working capital	40,257	(9,501)	[1]
Supplementary disclosures:
Cash income taxes paid, net of refunds	(4,563)	(4,508)
Interest paid, net of amounts capitalized of $0.2 million in 2019 and $0 in 2018	137,116	113,820
Amounts capitalized	0
Non-cash investing activities:
Asset retirement costs capitalized	48,203	2,907
(Increase) decrease in capital expenditure accrual	$ (52,659)	$ 27,551
[1]	Reclassified to conform to current presentation (See Note A).

Employee and Retiree Benefit _3

Employee and Retiree Benefit Plans (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019USD ($)
Retirement Benefits [Abstract]
Contributions to benefit plans	$ 24.1
Expected benefit plan contributions to be made during the year	$ 8.3

Employee and Retiree Benefit _4

Employee and Retiree Benefit Plans (Components of Net Periodic Benefit Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,064	$ 2,252	$ 6,188	$ 6,761
Interest cost	7,151	6,716	21,402	20,160
Expected return on plan assets	(6,455)	(7,476)	(19,285)	(22,435)
Amortization of prior service cost (credit)	248	254	741	767
Recognized actuarial loss	3,516	5,197	10,538	15,593
Net periodic benefit expense	6,524	6,943	19,584	20,846
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	421	492	1,261	1,479
Interest cost	945	874	2,833	2,622
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	(98)	(10)	(293)	(29)
Recognized actuarial loss	0	0	0	0
Net periodic benefit expense	$ 1,268	$ 1,356	$ 3,801	$ 4,072

Incentive Plans (Narrative) (De

Incentive Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Feb. 28, 2019	Mar. 31, 2019	Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold of Deductible Compensation for Executive Officers			$ 1
2012 Long-Term Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available for issuance (in shares)			6,750,000
Annual rate for maximum number of shares available for issuance			1.00%
Performance-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		957,600
Performance-Based RSUs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per share at grant date (in USD per share)		$ 28.09
Time-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		327,900
Fair value per share at grant date (in USD per share)	$ 28.16
Time-Based RSUs | Director | Non-Employee Director Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	78,716
Fair value per share at grant date (in USD per share)	$ 27.95
Cash-Settled RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	1,025,900

Incentive Plans (Share-Based Pl

Incentive Plans (Share-Based Plans, Amounts Recognized) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation charged against income before tax benefit	$ 39,884	$ 36,348
Related income tax benefit recognized in income	$ 6,204	$ 5,532

Earnings per Share (Weighted-Av

Earnings per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Basic method (in shares)	160,365,705	173,047,246	[1]	167,310,202	172,949,450	[1]
Dilutive stock options and restricted stock units (in shares)	614,333	1,128,021		795,025	1,252,310
Diluted method (in shares)	160,980,038	174,175,267	[1]	168,105,227	174,201,760	[1]
[1]	Reclassified to conform to current presentation (see Note A).

Earnings per Share (Antidilutiv

Earnings per Share (Antidilutive Securities Not Included in Computation of Diluted EPS) (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Antidilutive stock options excluded from diluted shares (in shares)	2,903,768	2,870,549	3,016,361	3,544,087
Weighted average price of these options (in USD per share)	$ 44.65	$ 54.06	$ 45.38	$ 50.49

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Income Tax Contingency [Line Items]
Statutory tax rate	21.00%	21.00%
2017 Tax Act decrease of deferred tax expense			$ (156)
2017 Tax Act, increase in taxes payable			36
2017 Tax Act, net tax benefit			$ 120
Canada Revenue Agency
Income Tax Contingency [Line Items]
Reduction of future deferred tax liability	$ 15	$ 13

Income Taxes (Effective Income

Income Taxes (Effective Income Tax Rates) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	10.60%	24.10%	12.10%	(300.50%)

Financial Instruments and Ris_3

Financial Instruments and Risk Management (Narrative) (Details) $ in Millions	1 Months Ended	6 Months Ended	9 Months Ended
	Oct. 30, 2019barrels_per_day$ / bbl	Dec. 31, 2019USD ($)	Sep. 30, 2020bbl / d	Sep. 30, 2019USD ($)bbl / dOffsettingPositioncontractAcquisition$ / bbl	Sep. 30, 2018barrels_per_daycontract$ / bbl	Jun. 30, 2020$ / bbl	Dec. 31, 2018item
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of foreign currency derivatives | contract				0	0
Amount of loss reclassified to interest expense				$ 2.2
Number of businesses acquired (in acquisitions) | Acquisition				2
Number of offsetting positions (in positions)				0			0
Scenario, Forecast
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative loss		$ 0.7
Commodity derivative contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Daily production commitment (barrels per day)				35,000	21,000
Average Forward Price (in dollars per barrel) | $ / bbl				60.51	54.88
Interest Rate Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Loss deferred for fair value of interest rate derivative contracts, net of tax				$ 6.1
Income taxes on deferred loss on fair value of interest rate derivative contracts				$ 1.6
Notes Due 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Debt instrument term				10 years
Subsequent Event | Commodity derivative contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Daily production commitment (barrels per day)	45,000		35,000
Average Forward Price (in dollars per barrel) | $ / bbl	56.42					57.59

Financial Instruments and Ris_4

Financial Instruments and Risk Management (Fair Value of Derivative Instruments Not Designated as Hedging Instruments) (Details) - Not Designated as Hedging Instrument - Commodity derivative contracts - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts Payable
Derivatives, Fair Value [Line Items]
Liabilities	$ 104,358
Accounts Receivable
Derivatives, Fair Value [Line Items]
Accounts receivable		$ 3,837

Financial Instruments and Ris_5

Financial Instruments and Risk Management (Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Not Designated as Hedging Instrument | Commodity derivative contracts | Gain (loss) on crude contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on crude contracts	$ 63,247	$ (2,223)	$ 121,163	$ (69,349)

Financial Instruments and Ris_6

Financial Instruments and Risk Management (Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis) (Details) $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 30, 2019barrels_per_day$ / bbl	Sep. 30, 2020bbl / d	Sep. 30, 2019USD ($)bbl / d$ / bbl	Sep. 30, 2018barrels_per_day$ / bbl	Jun. 30, 2020$ / bbl	Dec. 31, 2018USD ($)
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			$ 104,358			$ 3,837
Liabilities			153,187			61,575
Fair Value, Measurements, Recurring | Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			104,358			3,837
Fair Value, Measurements, Recurring | Nonqualified employee savings plans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			15,499			13,845
Fair Value, Measurements, Recurring | Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			137,688			47,730
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			0			0
Liabilities			15,499			13,845
Fair Value, Measurements, Recurring | Level 1 | Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			0			0
Fair Value, Measurements, Recurring | Level 1 | Nonqualified employee savings plans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			15,499			13,845
Fair Value, Measurements, Recurring | Level 1 | Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			0			0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			104,358			3,837
Liabilities			0			0
Fair Value, Measurements, Recurring | Level 2 | Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			104,358			3,837
Fair Value, Measurements, Recurring | Level 2 | Nonqualified employee savings plans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			0			0
Fair Value, Measurements, Recurring | Level 2 | Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			0			0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			0			0
Liabilities			137,688			47,730
Fair Value, Measurements, Recurring | Level 3 | Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets			0			0
Fair Value, Measurements, Recurring | Level 3 | Nonqualified employee savings plans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			0			0
Fair Value, Measurements, Recurring | Level 3 | Contingent consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities			$ 137,688			$ 47,730
Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average Forward Price (in dollars per barrel) | $ / bbl			60.51	54.88
Oil and Gas Delivery Commitments and Contracts, Daily Production			35,000	21,000
Subsequent Event | Commodity derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Average Forward Price (in dollars per barrel) | $ / bbl	56.42				57.59
Oil and Gas Delivery Commitments and Contracts, Daily Production	45,000	35,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]			$ (609,787)
2019 components of other comprehensive income (loss):
Before reclassifications to income and retained earnings				36,927
Reclassifications to income				10,033
Other comprehensive income (loss)		$ (13,782)	$ 37,355	46,960	$ (75,525)
Ending Balance		(562,827)		(562,827)
Foreign Currency Translation Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(419,852)
2019 components of other comprehensive income (loss):
Before reclassifications to income and retained earnings				36,927
Reclassifications to income				0
Other comprehensive income (loss)				36,927
Ending Balance		(382,925)		(382,925)
Retirement and Postretirement Benefit Plan Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(182,036)
2019 components of other comprehensive income (loss):
Before reclassifications to income and retained earnings				0
Reclassifications to income				8,277
Other comprehensive income (loss)				8,277
Ending Balance		(173,759)		(173,759)
Reclassifications before taxes, included in net periodic benefit expense				10,598
Reclassifications, income tax expense				2,321
Deferred Loss on Interest Rate Derivative Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(7,899)
2019 components of other comprehensive income (loss):
Before reclassifications to income and retained earnings				0
Reclassifications to income				1,756
Other comprehensive income (loss)				1,756
Ending Balance		$ (6,143)		(6,143)
Reclassifications before taxes, included in net periodic benefit expense				2,223
Reclassifications, income tax expense				$ 467
[1]	Reclassified to conform to current presentation (see Note A).

Business Segments (Segment Info

Business Segments (Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018		Sep. 30, 2019	Sep. 30, 2018		Dec. 31, 2018	[1]
Segment Reporting Information [Line Items]
Total Assets	$ 11,783,667			$ 11,783,667			$ 11,052,587
External Revenues	817,077	$ 490,511	[2]	2,191,573	$ 1,287,763	[2]
Income (Loss)	1,111,702	93,943	[2]	1,307,713	307,715	[2],[3]
Assets/revenue/income from continuing operations
Segment Reporting Information [Line Items]
Total Assets	11,766,500			11,766,500
External Revenues	817,100	490,500		2,191,600	1,287,800
Income (Loss)	158,300	56,100		280,100	121,500
Discontinued operations, net of tax
Segment Reporting Information [Line Items]
Total Assets	17,200			17,200
External Revenues	0	0		0	0
Income (Loss)	953,400	37,800		1,027,600	186,200
Corporate
Segment Reporting Information [Line Items]
Total Assets	1,151,200			1,151,200
External Revenues	63,400	(2,100)		125,600	(61,400)
Income (Loss)	300	(49,300)		(97,000)	(96,700)
Exploration and production | Operating Segments
Segment Reporting Information [Line Items]
Total Assets	10,615,300			10,615,300
External Revenues	753,700	492,600		2,066,000	1,349,200
Income (Loss)	158,000	105,400		377,100	218,200
Exploration and production | Operating Segments | United States
Segment Reporting Information [Line Items]
Total Assets	8,149,500			8,149,500
External Revenues	656,800	357,800		1,734,300	971,700
Income (Loss)	170,800	91,600		420,000	200,300
Exploration and production | Operating Segments | Canada
Segment Reporting Information [Line Items]
Total Assets	2,212,500			2,212,500
External Revenues	95,000	114,900		323,800	357,600
Income (Loss)	(9,100)	12,500		(7,500)	46,700
Exploration and production | Operating Segments | Other
Segment Reporting Information [Line Items]
Total Assets	253,300			253,300
External Revenues	1,900	19,900		7,900	19,900
Income (Loss)	$ (3,700)	$ 1,300		$ (35,400)	$ (28,800)
[1]	Reclassified to conform to current presentation (see Note A).
[2]	Reclassified to conform to current presentation (see Note A).
[3]	Reclassified to conform to current presentation (See Note A).

Leases (Narrative) (Details)

Leases (Narrative) (Details)	9 Months Ended
	Sep. 30, 2019
Minimum
Remaining lease terms	1 year
Period in which leases have termination option	1 month
Maximum
Remaining lease terms	17 years

Leases (Summary of Lease Relate

Leases (Summary of Lease Related Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	[1]	Sep. 30, 2019	Sep. 30, 2018	[1]
Operating lease	$ 62,260			$ 178,164
Amortization of asset	0			420
Interest on lease liabilities	0			202
Sublease income	(395)			(1,034)
Net lease expense	118,693			300,404
Variable lease expense	9,000			22,800
Lease operating expense	147,632	$ 83,751		416,460	$ 253,820
Property, plant and equipment
Operating lease	53,117			108,679
Lease operating expense	37,400			86,200
Asset retirement obligations
Operating lease	0			3,024
Lease operating expense				3,000
Lease operating expenses
Lease operating expense	10,900			33,300
Selling and general expense
Operating lease	2,700			9,044
Lease operating expense	1,000			3,100
Other Operating Income (Expense) [Member]
Operating lease	$ 1,011			$ 1,905
[1]	Reclassified to conform to current presentation (see Note A).

Leases (Schedule of Maturity of

Leases (Schedule of Maturity of Lease Liabilities) (Details) $ in Thousands	Sep. 30, 2019USD ($)
Operating Leases
2019	$ 53,597
2020	136,283
2021	57,190
2022	54,955
2023	54,453
Remaining	471,202
Total future minimum lease payments	827,680
Less imputed interest	(253,403)
Present value of lease liabilities	574,277
Finance Leases
2019	267
2020	1,069
2021	1,069
2022	1,069
2023	1,069
Remaining	5,610
Total future minimum lease payments	10,153
Less imputed interest	(1,985)
Present value of lease liabilities	8,168
Total
2019	53,864
2020	137,352
2021	58,259
2022	56,024
2023	55,522
Remaining	476,812
Total future minimum lease payments	837,833
Less imputed interest	(255,388)
Present value of lease liabilities	582,445
Minimum lease payments for leases signed but not yet commenced	$ 272,600
Lease duration for leases signed but not yet commenced	20 years

Leases (Summary of Lease Term a

Leases (Summary of Lease Term and Discount Rate) (Details)	Sep. 30, 2019
Weighted average remaining lease term:
Operating leases	11 years
Finance leases	10 years
Weighted average discount rate:
Operating leases	4.80%
Finance leases	4.70%

Leases (Summary of Other Lease

Leases (Summary of Other Lease Information) (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 140,424
Operating cash flows from finance leases	306
Financing cash flows from finance leases	510
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases	$ 31,281

Acquisition (Narrative) (Detail

Acquisition (Narrative) (Details) $ in Thousands	1 Months Ended		3 Months Ended			9 Months Ended
	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)MMBoe	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	[1]	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	[1]	May 31, 2019MMBoe
Business Acquisition [Line Items]
Revenue from sales to customers			$ 750,337	$ 475,458		$ 2,060,127	$ 1,330,399
Income (loss) from continuing operations before income taxes			177,116	$ 73,968		318,800	$ 30,347
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C.
Business Acquisition [Line Items]
Proved reserves | MMBoe									67
Cash consideration paid to PAI	$ 1,226,300	$ 1,226,261
Revenue from sales to customers			126,400			159,800
Income (loss) from continuing operations before income taxes			29,200			34,300
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. | Sales Thresholds 2019 to 2022
Business Acquisition [Line Items]
Contingent consideration, maximum			200,000			200,000
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. | First Oil from Development Projects
Business Acquisition [Line Items]
Contingent consideration, maximum			50,000			50,000
Petrobas America Inc
Business Acquisition [Line Items]
Proved reserves | MMBoe		97
Cash consideration paid to PAI		$ 775,413
Percentage of interest in subsidiary transferred		20.00%
Revenue from sales to customers			263,700			710,200
Income (loss) from continuing operations before income taxes			$ 99,600			$ 369,700
Petrobas America Inc | Sales Thresholds 2019 to 2022
Business Acquisition [Line Items]
Contingent consideration, maximum		$ 150,000
MP Gulf Of Mexico LLC
Business Acquisition [Line Items]
Parent ownership interest		80.00%
Petrobas America Inc | MP Gulf Of Mexico LLC
Business Acquisition [Line Items]
Noncontrolling ownership interest		20.00%
[1]	Reclassified to conform to current presentation (see Note A).

Acquisition (Preliminary Purcha

Acquisition (Preliminary Purchase Price Allocation) (Details) - USD ($) $ in Thousands	1 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Petrobas America Inc
Business Acquisition [Line Items]
Cash consideration paid		$ 775,413
Fair value of net assets contributed		154,469
Contingent consideration		52,540
NCI in acquired assets		245,605
Total purchase consideration		1,228,027
Fair value of Property, plant and equipment		1,610,790
Other assets		5,628
Less: Asset retirement obligations		(388,391)
Total net assets		1,228,027
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C.
Business Acquisition [Line Items]
Cash consideration paid	$ 1,226,300	1,226,261
Fair value of net assets contributed		0
Contingent consideration		89,444
NCI in acquired assets		0
Total purchase consideration		1,315,705
Fair value of Property, plant and equipment		1,340,206
Other assets		12,771
Less: Asset retirement obligations		(37,272)
Total net assets		$ 1,315,705

Acquisition (Pro Forma Financia

Acquisition (Pro Forma Financial Information) (Details) - Petrobas America Inc - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Pro Forma Financial Information
Revenues	$ 855,689	$ 2,383,296
Net Income Attributable to Murphy	$ 266,275	$ 823,704
Net Income Attributable to PAI per Common Share [Abstract]
Basic	$ 1.54	$ 4.76
Diluted	$ 1.53	$ 4.73

Subsequent Events (Details)

Subsequent Events (Details) - Malaysia Subsidiaries - USD ($) $ in Millions	Jul. 31, 2019	Sep. 30, 2019
Subsequent Event [Line Items]
Cash consideration paid for divested business	$ 2,000
Contingent bonus payment	100
Gain (loss) on disposition of business	$ 960	$ 960