Murphy Oil (MUR) 10-Q 7 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014
Document And Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	31-Mar-14
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q1
Trading Symbol	'MUR
Entity Registrant Name	'MURPHY OIL CORP /DE
Entity Central Index Key	'0000717423
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	179,446,784

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'		'
Cash and cash equivalents	$648,612		$750,155
Canadian government securities with maturities greater than 90 days at the date of acquisition	372,003		374,842
Accounts receivable, less allowance for doubtful accounts of $1,609 in 2014 and 2013	1,007,125		999,872
Inventories, at lower of cost or market Crude oil	38,104		40,077
Materials and supplies	255,132		254,118
Prepaid expenses	125,984		83,856
Deferred income taxes	55,146		61,991
Assets held for sale	871,453		943,732
Total current assets	3,373,559		3,508,643
Property, plant and equipment, at cost less accumulated depreciation, depletion and amortization of $8,850,951 in 2014 and $8,540,239 in 2013	13,654,991		13,481,055
Goodwill	38,702		40,259
Deferred charges and other assets	95,269		98,123
Assets held for sale	388,617		381,404
Total assets	17,551,138		17,509,484
Current liabilities	'		'
Current maturities of long-term debt	30,647		26,249
Accounts payable and accrued liabilities	2,149,085		2,335,712
Income taxes payable	288,101		222,930
Liabilities associated with assets held for sale	589,011		639,140
Total current liabilities	3,056,844		3,224,031
Long-term debt, including capital lease obligation	3,415,621		2,936,563
Deferred income taxes	1,485,616		1,466,100
Asset retirement obligations	854,270		852,488
Deferred credits and other liabilities	337,957		339,028
Liabilities associated with assets held for sale	96,752		95,544
Stockholders' 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 194,945,904 shares in 2014 and 194,920,155 shares in 2013	194,946		194,920
Capital in excess of par value	876,647		902,633
Retained earnings	8,157,972		8,058,792
Accumulated other comprehensive income	37,463	[1]	172,119	[1]
Treasury stock, 15,499,120 shares of Common Stock in 2014 and 11,513,642 shares of Common Stock in 2013, at cost	-962,950		-732,734
Total stockholders' equity	8,304,078		8,595,730
Total liabilities and stockholders' equity	$17,551,138		$17,509,484
[1]	All amounts are presented net of income taxes.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Accounts receivable, allowance for doubtful accounts	$1,609	$1,609
Property, plant and equipment, accumulated depreciation, depletion and amortization	$8,850,951	$8,540,239
Cumulative Preferred Stock, par	$100	$100
Cumulative Preferred Stock, authorized	400,000	400,000
Cumulative Preferred Stock, issued	'	'
Common Stock, par	$1	$1
Common Stock, authorized	450,000,000	450,000,000
Common Stock, issued	194,945,904	194,920,155
Treasury stock, shares of Common Stock	15,499,120	11,513,642

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
REVENUES	'	'
Sales and other operating revenues	$1,281,208	$1,298,928	[1]
Interest and other income (loss)	5,192	-7,990	[1]
Total revenues	1,286,400	1,290,938	[1]
COSTS AND EXPENSES	'	'
Lease operating expenses	262,255	337,223	[1]
Severance and ad valorem taxes	26,326	15,063	[1]
Exploration expenses, including undeveloped lease amortization	138,466	108,493	[1]
Selling and general expenses	92,026	81,467	[1]
Depreciation, depletion and amortization	396,249	363,142	[1]
Accretion of asset retirement obligations	12,065	11,896	[1]
Interest expense	32,886	27,028	[1]
Interest capitalized	-8,868	-13,388	[1]
Other expense	814	0	[1]
Total costs and expenses	952,219	930,924	[1]
Income from continuing operations before income taxes	334,181	360,014	[1]
Income tax expense	164,895	177,331	[1]
Income from continuing operations	169,286	182,683	[1]
Income (loss) from discontinued operations, net of taxes	-14,033	177,916	[1]
NET INCOME	$155,253	$360,599	[1]
INCOME PER COMMON SHARE - BASIC	'	'
Income from continuing operations	$0.94	$0.96	[1]
Income (loss) from discontinued operations	($0.08)	$0.93	[1]
Net income	$0.86	$1.89	[1]
INCOME PER COMMON SHARE - DILUTED	'	'
Income from continuing operations	$0.93	$0.95	[1]
Income (loss) from discontinued operations	($0.08)	$0.93	[1]
Net income	$0.85	$1.88	[1]
Average Common shares outstanding	'	'
Basic	181,367,565	190,810,201	[1]
Diluted	182,576,570	191,765,395	[1]
[1]	Reclassified to conform to current presentation.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'		'
Net income	$155,253		$360,599	[1]
Other comprehensive loss, net of income taxes	'		'
Net loss from foreign currency translation	-136,604		-117,754
Retirement and postretirement benefit plan amounts reclassified to net income	1,465		2,738
Deferred loss on interest rate hedges reclassified to interest expense	483		486
Other comprehensive loss	-134,656	[2]	-114,530
COMPREHENSIVE INCOME	$20,597		$246,069
[1]	Reclassified to conform to current presentation.
[2]	All amounts are presented net of income taxes.

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
OPERATING ACTIVITIES	'		'
Net income	$155,253		$360,599	[1]
Adjustments to reconcile net income to net cash provided by operating activities:	'		'
Loss (income) from discontinued operations	14,033		-177,916	[1]
Depreciation, depletion and amortization	396,249		363,142	[1]
Amortization of deferred major repair costs	2,741		1,990	[1]
Dry hole costs	87,909		41,011	[1]
Amortization of undeveloped leases	12,830		15,390	[1]
Accretion of asset retirement obligations	12,065		11,896	[1]
Deferred and noncurrent income tax charges	23,167		25,326	[1]
Pretax gain from disposition of assets	-19		-42	[1]
Net decrease in noncash operating working capital	18,673		100,949	[1]
Other operating activities, net	2,973		-13,896	[1]
Net cash provided by continuing operations	725,874		728,449	[1]
Net cash provided by discontinued operations	10,005		192,678	[1]
Net cash provided by operating activities	735,879		921,127	[1]
INVESTING ACTIVITIES	'		'
Property additions and dry hole costs	-996,218		-965,412	[1]
Proceeds from sale of assets	26		0	[1]
Purchases of investment securities	-240,802	[2]	-230,320	[1],[2]
Proceeds from maturity of investment securities	243,641	[2]	130,385	[1],[2]
Investing activities of discontinued operations:	'		'
Sales proceeds	0		211,549	[1]
Other	-4,866		-82,264	[1]
Other - net	-3,736		2,122	[1]
Net cash required by investing activities	-1,001,955		-933,940	[1]
FINANCING ACTIVITIES	'		'
Borrowings of long-term debt	479,000		261,989	[1]
Purchase of treasury stock	-250,000		0	[1]
Proceeds from exercise of stock options	0		1,281	[1]
Withholding tax on stock-based incentive awards	-6,319		-7,337	[1]
Cash dividends paid	-56,073		-59,672	[1]
Other	-240		-91	[1]
Net cash provided by financing activities	166,368		196,170	[1]
Effect of exchange rate changes on cash and cash equivalents	-1,835		-13,568	[1]
Net increase (decrease) in cash and cash equivalents	-101,543		169,789	[1]
Cash and cash equivalents, beginning	750,155		947,316	[1]
Cash and cash equivalents, ending	$648,612		$1,117,105	[1]
[1]	Reclassified to conform to current presentation.
[2]	Investments are Canadian government securities with maturities greater than 90 days at the date of acquisition.

CONSOLIDATED_STATEMENTS_OF_CAS1

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (Parenthetical) (Minimum [Member])	3 Months Ended
	Mar. 31, 2014
Minimum [Member]	'
Maturity of Canadian government securities	'90 days

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) (USD $)	Total		Cumulative Preferred Stock - par $100, authorized 400,000 shares, none issued	Common Stock - par $1.00, authorized 450,000,000 shares at December 31, 2013, 2012 and 2011, issued 0 shares at December 31, 2013, 194,616,470 shares at December 31, 2012 and 193,909,200 shares at December 31, 2011	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock
In Thousands
Balance at beginning of period at Dec. 31, 2012	'		$0	$194,616	$873,934	$7,717,389	$408,901	($252,805)
Exercise of stock options	'		'	67	743	'	'	'
Foreign currency translation loss, net of income taxes	-117,754		'	'	'	'	-117,754	'
Purchase of treasury shares	'		'	'	'	'	'	0
Net income for the period	360,599	[1]	'	'	'	360,599	'	'
Restricted stock transactions and other	'		'	'	-24,480	'	'	'
Retirement and postretirement benefit plan adjustments, net of income taxes	2,738		'	'	'	'	2,738	'
Sale of stock under employee stock purchase plans	'		'	'	'	'	'	337
Cash dividends	'		'	'	'	-59,672	'	'
Stock-based compensation	'		'	'	16,903	'	'	'
Change in deferred loss on interest rate hedges, net of income taxes	'		'	'	'	'	486	'
Awarded restricted stock, net of forfeitures	'		'	'	'	'	'	16,545
Other	'		'	'	-53	'	'	'
Balance at end of period at Mar. 31, 2013	9,138,494		0	194,683	867,047	8,018,316	294,371	-235,923
Balance at beginning of period at Dec. 31, 2013	8,595,730		0	194,920	902,633	8,058,792	172,119	-732,734
Exercise of stock options	'		'	26	-10,765	'	'	'
Foreign currency translation loss, net of income taxes	-136,604		'	'	'	'	-136,604	'
Purchase of treasury shares	'		'	'	'	'	'	-250,000
Net income for the period	155,253		'	'	'	155,253	'	'
Restricted stock transactions and other	'		'	'	-26,400	'	'	'
Retirement and postretirement benefit plan adjustments, net of income taxes	1,465		'	'	'	'	1,465	'
Sale of stock under employee stock purchase plans	'		'	'	'	'	'	132
Cash dividends	'		'	'	'	-56,073	'	'
Stock-based compensation	'		'	'	11,190	'	'	'
Change in deferred loss on interest rate hedges, net of income taxes	'		'	'	'	'	483	'
Awarded restricted stock, net of forfeitures	'		'	'	'	'	'	19,652
Other	'		'	'	-11	'	'	'
Balance at end of period at Mar. 31, 2014	$8,304,078		$0	$194,946	$876,647	$8,157,972	$37,463	($962,950)
[1]	Reclassified to conform to current presentation.

CONSOLIDATED_STATEMENTS_OF_STO1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Statement Of Stockholders Equity [Abstract]	'	'	'
Cumulative Preferred Stock, par	$100	$100	$100
Cumulative Preferred Stock, authorized	400,000	400,000	400,000
Cumulative Preferred Stock, issued	'	'	'
Common Stock, par	$1	$1	$1
Common Stock, authorized	450,000,000	450,000,000	450,000,000
Common Stock, issued	194,945,904	194,920,155	194,683,376

Interim_Financial_Statements

Interim Financial Statements	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Interim Financial Statements	'
	Note A – Interim Financial Statements
	The consolidated financial statements of the Company presented herein have not been audited by independent auditors, except for the Consolidated Balance Sheet at December 31, 2013. 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 March 31, 2014, and the results of operations, cash flows and changes in stockholders’ equity for the interim periods ended March 31, 2014 and 2013, in conformity with accounting principles generally accepted in the United States. In preparing the financial statements of the Company in conformity with accounting principles generally accepted in the United States, 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 2013 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 period ended March 31, 2014 are not necessarily indicative of future results.

Property_Plant_and_Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2014
Property Plant And Equipment [Abstract]	'
Property, Plant and Equipment	'
	Note B – Property, Plant and Equipment
	Under U.S. generally accepted accounting principles for companies that use the successful efforts method of accounting, 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 March 31, 2014, the Company had total capitalized exploratory well costs pending the determination of proved reserves of $395.9 million. The following table reflects the net changes in capitalized exploratory well costs during the three-month periods ended March 31, 2014 and 2013.
	(Thousands of dollars)	2014		2013
	Beginning balance at January 1	$	393,030		445,697
	Additions pending the determination of proved reserves		2,919		26,929
	Reclassifications to proved properties based on the determination of proved reserves		0		(28,398	)
	Balance at March 31	$	395,949		444,228
	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.
		March 31
		2014							2013
	(Thousands of dollars)	Amount		No. of			No. of		Amount		No. of		No. of
				Wells			Projects				Wells		Projects
	Aging of capitalized well costs:
	Zero to one year	$	32,192		2			1		56,324		6		3
	One to two years		56,702		6			1		40,721		3		1
	Two to three years		31,224		2			0		79,446		8		2
	Three years or more		275,831		22			7		267,737		24		5
		$	395,949		32			9		444,228		41		11
	Of the $363.8 million of exploratory well costs capitalized more than one year at March 31, 2014, $213.8 million is in Malaysia, $116.2 million is in the U.S. and $33.8 million is in Brunei. In all three geographical areas either further appraisal or development drilling is planned and/or development studies/plans are in various stages of completion.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Note C – Inventories
	Inventories are carried at the lower of cost or market. For the Company’s U.K. refining and marketing operations reported as discontinued operations, the cost of crude oil and finished products is predominantly determined on the last-in, first-out (LIFO) method. The U.K. inventories are reported within Current assets held for sale on the Consolidated Balance Sheet. At March 31, 2014 and December 31, 2013, the carrying values of inventories under the LIFO method were $201.6 million and $268.6 million, respectively, less than such inventories would have been valued using the first-in, first-out (FIFO) method.

Discontinued_Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]	'
Discontinued Operations	'
	Note D – Discontinued Operations
	The Company has previously announced its intention to sell its U.K. refining and marketing operations. The Company has accounted for this U.K. downstream business as discontinued operations for all periods presented, including a reclassification of 2013 operating results and cash flows for this business to discontinued operations. The U.K. downstream operations were formerly reported as a separate segment within the Company’s refining and marketing business. The Company announced on April 3, 2014 the start of a consultation period with employees of the U.K. downstream subsidiary as to the future of this subsidiary and its Milford Haven refinery.
	On August 30, 2013, Murphy Oil Corporation (the “Company”) distributed 100% of the outstanding common stock of Murphy USA Inc. (“MUSA”) to its shareholders in a generally tax-free spin-off for U.S. federal income tax purposes. Prior to the separation, MUSA held all of the Company’s U.S. downstream operations, including retail gasoline stations and other marketing assets, plus two ethanol production facilities. The shares of MUSA common stock are traded on the New York Stock Exchange under the ticker symbol “MUSA.” The Company has no continuing involvement with MUSA operations. Accordingly, the operating results and the cash flows for these former U.S. downstream operations have been reported as discontinued operations in the 2013 consolidated financial statements.
	The Company also sold certain oil and gas assets in the United Kingdom during the three months ended March 31, 2013. The after-tax gain on sale of the U.K. oil and gas assets was $147.4 million in the three months ended March 31, 2013. The Company has accounted for these U.K. upstream operations as discontinued operations in its 2013 consolidated financial statements.
	The results of operations associated with these discontinued operations for the three-month periods ended March 31, 2014 and 2013 were as follows:
		Three Months
		Ended March 31,
	(Thousands of dollars)	2014			2013
	Revenues	$	1,432,386			5,515,538
	Income (loss) before income taxes, including a gain on disposal of $74,928 in 2013	$	(17,295	)		132,921
	Income tax benefit		(3,262	)		(44,995	)
	Income (loss) from discontinued operations	$	(14,033	)		177,916

Financing_Arrangements_and_Deb

Financing Arrangements and Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Financing Arrangements and Debt	'
	Note E – Financing Arrangements and Debt
	The Company has a $2.0 billion committed credit facility that expires in June 2017. Borrowings under the facility bear interest at 1.25% above LIBOR based on the Company’s current credit rating as of March 31, 2014. In addition, facility fees of 0.25% are charged on the full $2.0 billion commitment. The Company also has a shelf registration statement on file with the U.S. Securities and Exchange Commission that permits the offer and sale of debt and/or equity securities through October 2015.

Cash_Flow_Disclosures

Cash Flow Disclosures	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Cash Flow Disclosures	'
	Note F – Cash Flow Disclosures
	Additional disclosures regarding cash flow activities are provided below.
		Three Months
		Ended March 31,
	(Thousands of dollars)	2014			2013
	Net (increase) decrease in operating working capital other than cash and cash equivalents (from continuing operations):
	Decrease (increase) in accounts receivable	$	(7,251	)		49,060
	Decrease in inventories		958			17,089
	Increase in prepaid expenses		(42,128	)		(53,970	)
	Decrease in deferred income tax assets		6,845			27,427
	Decrease in accounts payable and accrued liabilities		(4,923	)		(66,680	)
	Increase in current income tax liabilities		65,172			128,023
	Total	$	18,673			100,949
	Supplementary disclosures (including discontinued operations):
	Cash income taxes paid	$	101,295			47,877
	Interest paid less than amounts capitalized		(4,303	)		(10,519	)

Employee_and_Retiree_Benefit_P

Employee and Retiree Benefit Plans	3 Months Ended
	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'
Employee and Retiree Benefit Plans	'
	Note G – 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 plans and the U.S. directors’ 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 benefit plans, which are not funded, that cover most active and retired U.S. employees. Additionally, most U.S. retired employees are covered by a life insurance benefit plan. The health care benefits are contributory; the life insurance benefits are noncontributory.
	Effective with the spin-off of Murphy’s former U.S. retail marketing operation, Murphy USA Inc. (MUSA) on August 30, 2013, significant modifications were made to the U.S. defined benefit pension plan. Certain Murphy employees’ benefits under the U.S. plan were frozen at that time. No further benefit service will accrue for the affected employees; however, the plan will recognize future eligible earnings after the spin-off date. In addition, all previously unvested benefits became fully vested at the spin-off date. For those affected active employees of the Company, additional U.S. retirement plan benefits will accrue in future periods under a cash balance formula. Upon the spin-off of MUSA, Murphy retained all vested pension defined benefit and other postretirement benefit obligations associated with current and former employees of this separated business. No additional benefit will accrue for any employees of MUSA under the Company’s retirement plan after the spin-off date.
	The table that follows provides the components of net periodic benefit expense for the three-month periods ended March 31, 2014 and 2013.
		Three Months Ended March 31,
								Other
		Pension Benefits						Postretirement Benefits
	(Thousands of dollars)	2014			2013			2014			2013
	Service cost	$	6,556			7,603			672			1,167
	Interest cost		8,215			6,431			1,278			1,234
	Expected return on plan assets		(8,480	)		(5,700	)		0			0
	Amortization of prior service cost		225			276			(21	)		(42	)
	Amortization of transitional liability		208			120			1			2
	Recognized actuarial loss		1,733			3,532			59			457
	Net periodic benefit expense	$	8,457			12,262			1,989			2,818
	During the three-month period ended March 31, 2014, the Company made contributions of $10.6 million to its defined benefit pension and postretirement benefit plans. Remaining funding in 2014 for the Company’s defined benefit pension and postretirement plans is anticipated to be $31.9 million.

Incentive_Plans

Incentive Plans	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Incentive Plans	'
	Note H – Incentive Plans
	The costs resulting from all share-based payment transactions are recognized in the Consolidated Statements of Income using a fair value-based measurement method over the periods that the awards vest.
	The 2012 Annual Incentive Plan (2012 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 other key employees. Cash awards under the 2012 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 2012 Long-Term Incentive Plan (2012 Long-Term Plan) authorizes the Committee to make grants of the Company’s Common Stock and other stock-based incentives to employees. These grants may be in the form of stock options (nonqualified or incentive), stock appreciation rights (SAR), restricted stock, restricted stock units, performance units, performance shares, dividend equivalents and other stock-based incentives. The 2012 Long-Term Plan expires in 2022. A total of 8,700,000 shares are issuable during the life of the 2012 Long-Term Plan, with annual grants limited to 1% of Common shares outstanding. The Company has an Employee Stock Purchase Plan that permits the issuance of up to 980,000 shares through September 30, 2017. The Company also has a Stock Plan for Non-Employee Directors that permits the issuance of restricted stock and stock options or a combination thereof to the Company’s Directors.
	On February 4, 2014, the Committee granted stock options for 772,900 shares at an exercise price of $55.82 per share. The Black-Scholes valuation for these awards was $12.84 per option. The Committee also granted 464,300 performance-based restricted stock units (RSU) and 233,400 time-based RSU on that date. The fair value of the performance-based RSU, using a Monte Carlo valuation model, ranged from $33.90 to $51.30 per unit. The fair value of time-based RSU was estimated based on the fair market value of the Company’s stock on the date of grant, which was $55.82. Additionally, on February 4, 2014, the Committee granted 183,200 SAR and 170,900 units of cash-settled RSU (RSU-C) to certain employees. The SAR and RSU-C are to be settled in cash, net of applicable income taxes, and are accounted for as liability-type awards. The initial fair value of these SAR was equivalent to the stock options granted, while the initial value of RSU-C was equivalent to equity-settled restricted stock units granted. On February 5, 2014, the Committee granted 43,848 shares of time-based RSU to the Company’s Directors under the Non-employee Director Plan. These shares vest on the third anniversary of the date of grant. The fair value of these awards was estimated at $55.20 per unit.
	Beginning January 1, 2014, all stock option exercises are non-cash transactions for the Company. The employee will receive net shares, after applicable withholding taxes, upon each exercise. Cash received from options exercised under all share-based payment arrangements for the three-month period ended March 31, 2013 was $1.3 million. The actual income tax benefit realized for the tax deductions from option exercises of the share-based payment arrangements totaled $0.7 million and $1.4 million for the three-month periods ended March 31, 2014 and 2013, respectively.
	Amounts recognized in the Consolidated Statements of Income with respect to share-based plans are as follows:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014		2013
	Compensation charged against income before tax benefit	$	15,301		17,833
	Related income tax benefit recognized in income		4,733		4,922

Earnings_per_Share

Earnings per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings per Share	'
	Note I – Earnings per Share
	Net income was used as the numerator in computing both basic and diluted income per Common share for the three-months ended March 31, 2014 and 2013. The following table reconciles the weighted-average shares outstanding used for these computations.
		Three Months Ended
		March 31,
	(Weighted-average shares)	2014		2013
	Basic method		181,367,565		190,810,201
	Dilutive stock options and restricted stock units		1,209,005		955,194
	Diluted method		182,576,570		191,765,395
	The following table reflects certain options to purchase shares of common stock that were outstanding during the 2014 and 2013 periods but were not included in the computation of diluted EPS above because the incremental shares from assumed conversion were antidilutive.
		Three Months Ended
		March 31,
		2014		2013
	Antidilutive stock options excluded from diluted shares		1,555,015		3,794,002
	Weighted average price of these options	$	58.97	$	62.18

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note J – Income Taxes
	The Company’s effective income tax rate generally exceeds the U.S. Federal statutory tax rate of 35.0%. The effective tax rate is calculated as the amount of income tax expense divided by income before income tax expense. For the three-month periods in 2014 and 2013, the Company’s effective income tax rates were as follows:
		2014			2013
	Three months ended March 31		49.3	%		49.3	%
	The effective tax rates for the periods presented exceeded the U.S. Federal tax rate of 35.0% due to several factors, including: the effects of income generated in foreign tax jurisdictions, certain of which have tax rates that are higher than the U.S. Federal rate; U.S. state tax expense; and certain expenses, including exploration and other expenses in certain foreign jurisdictions, for which no income tax benefits are available or are not presently being recorded due to a lack of reasonable certainty of adequate future revenue against which to utilize these expenses as deductions.
	The Company’s tax returns in multiple jurisdictions are subject to audit by taxing authorities. These audits often take 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 March 31, 2014, the earliest years remaining open for audit and/or settlement in our major taxing jurisdictions are as follows: United States – 2010; Canada – 2008; United Kingdom – 2011; and Malaysia – 2006.

Financial_Instruments_and_Deri

Financial Instruments and Derivatives	3 Months Ended
	Mar. 31, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Financial Instruments and Derivatives	'
	Note K – Financial Instruments and Derivatives
	Murphy utilizes 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 primarily with creditworthy major financial institutions or over national exchanges. 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 unrealized gains and losses on these derivative contracts in its Consolidated Statements of Income. Certain interest rate derivative contracts were accounted for as hedges and the loss associated with settlement of these contracts was deferred in Accumulated Other Comprehensive Income. This loss is being amortized as Interest Expense in the Consolidated Statements of Income.
	Commodity Purchase Price Risks
	The Company is subject to commodity price risk related to crude oil it will produce and sell in 2014. The Company has entered into a series of West Texas Intermediate (WTI) crude oil fixed-price swap financial contracts covering a portion of its Eagle Ford Shale production from April 2014 through December 2014. Under these contracts, which mature monthly, the Company will pay the average monthly price in effect and will receive the fixed contract prices. WTI open contracts at March 31, 2014 were as follows:
	Dates	Volumes				Swap Prices
		(barrels per day)
	April – June 2014		24,000			$	96.41 per barrel
	July – September 2014		20,000			$	94.32 per barrel
	October – December 2014		12,000			$	91.72 per barrel
	The fair value of these open commodity derivative contracts was a net liability of $18.8 million at March 31, 2014. Subsequent to March 31, 2014 additional contracts have been executed. See page 26 of this Form 10-Q report.
	Foreign Currency Exchange Risks
	The Company is subject to foreign currency exchange risk associated with operations in countries outside the United States. Short-term derivative instruments were outstanding at March 31, 2014 and 2013 to manage the risk of certain future income taxes that are payable in Malaysian ringgits. The equivalent U.S. dollars of Malaysian ringgit derivative contracts open at March 31, 2014 and 2013 were approximately $133.5 million and $274.0 million, respectively. Short-term derivative instrument contracts totaling $23.0 million and $20.0 million U.S. dollars were also outstanding at March 31, 2014 and 2013, respectively, to manage the risk of certain U.S. dollar accounts receivable associated with sale of crude oil production in Canada. The impact from marking to market these foreign currency derivative contracts increased income before taxes by $3.4 million for the three-month period ended March 31, 2014 and reduced income before taxes by $2.7 million for the three-month period ended March 31, 2013.
	At March 31, 2014 and December 31, 2013, the fair value of derivative instruments not designated as hedging instruments are presented in the following table.
		March 31, 2014						December 31, 2013
	(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 payable		$	(21,367	)		Accounts receivable		$	1,970
	Foreign currency	Accounts receivable		$	3,411			Accounts payable		$	(1,038	)
	For the three-month periods ended March 31, 2014 and 2013, the gains and losses recognized in the Consolidated Statements of Income for derivative instruments not designated as hedging instruments are presented in the following table.
				Gain (Loss)
				Three Months Ended
	(Thousands of dollars)	Statement of Income		March 31,
	Type of Derivative Contract	Location		2014				2013
	Commodity	Sales and other		$	(18,414	)			0
		operating
		revenues
	Commodity	Discontinued			0				(4,210	)
		operations
	Foreign currency	Interest and other			3,436				(2,818	)
		income (loss)
				$	(14,978	)			(7,028	)
	Interest Rate Risks
	In 2011 the Company entered into a series of derivative contracts known as forward starting interest rate swaps to manage interest rate risk associated with $350 million of 10-year notes that were sold in May 2012. These interest rate swaps matured in May 2012. Under hedge accounting rules, the Company deferred a loss on these contracts to match the payment of interest on these notes through 2022. During each of the three-month periods ended March 31, 2014 and 2013, $0.7 million of the deferred loss on the interest rate swaps was charged to Interest Expense in the Consolidated Statements of Income. The remaining loss deferred on these matured contracts at March 31, 2014 was $24.1 million, which is recorded, net of income taxes, in Accumulated Other Comprehensive Income in the Consolidated Balance Sheet. The Company expects to charge approximately $2.2 million of this deferred loss to income in the form of interest expense during the remaining nine months of 2014.
	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 March 31, 2014 and December 31, 2013 are presented in the following table.
		31-Mar-14													31-Dec-13
	(Thousands of dollars)	Level 1				Level 2				Level 3			Total		Level 1		Level 2		Level 3		Total
	Assets:
	Commodity derivative contracts	$	0				0				0			0		0		1,970		0		1,970
	Foreign currency exchange derivative contracts		0				3,411				0			3,411		0		0		0		0
		$	0				3,411				0			3,411		0		1,970		0		1,970
	Liabilities:
	Nonqualified employee savings plans	$	13,393				0				0			13,393		13,267		0		0		13,267
	Commodity derivative contracts		0				21,367				0			21,367		0		0		0		0
	Foreign currency exchange derivative contracts		0				0				0			0		0		1,038		0		1,038
		$	13,393				21,367				0			34,760		13,267		1,038		0		14,305
	The fair value of West Texas Intermediate (WTI) crude oil derivative contracts was determined based on active market quotes for WTI crude oil at the balance sheet dates. The fair value of foreign exchange derivative contracts was based on market quotes for similar contracts at the balance sheet dates. The income effect of changes in the fair value of crude oil derivative contracts is recorded in Sales and Other Operating Revenues in the Consolidated Statements of Income and changes in fair value of foreign exchange derivative contracts is recorded in Interest and Other Income. 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 Income.
	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 March 31, 2014 and December 31, 2013.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive Income	'
	Note L – Accumulated Other Comprehensive Income
	The components of Accumulated Other Comprehensive Income (AOCI) on the Consolidated Balance Sheets at March 31, 2014 and December 31, 2013 and the changes during the three months ended March 31, 2014 are presented net of taxes in the following table.
			Foreign			Retirement and			Deferred			Total1
			Currency			Postretirement			Loss on
			Translation			Benefit Plan			Interest
			Gains (Losses)1			Adjustments1			Rate
									Derivative
									Hedges1
	(Thousands of dollars)
	Balance at December 31, 2013			305,192			(116,956	)		(16,117	)		172,119
	Components of other comprehensive income (loss):
	Before reclassifications to income			(136,604	)		236			0			(136,368	)
	Reclassifications to income			0			1,229	2		483	3		1,712
	Net other comprehensive income (loss)			(136,604	)		1,465			483			(134,656	)
	Balance at March 31, 2014			168,588			(115,491	)		(15,634	)		37,463
	1	All amounts are presented net of income taxes.
	2	Reclassifications before taxes of $1,878 for the three-month period ended March 31, 2014 are included in the computation of net periodic benefit expense. See Note G for additional information. Related income taxes of $649 for the three-month period ended March 31, 2014 are included in Income tax expense.
	3	Reclassifications before taxes of $741 for the three-month period ended March 31, 2014 are included in Interest expense. Related income taxes of $258 for the three-month period ended March 31, 2014 are included in Income tax expense.

Environmental_and_Other_Contin

Environmental and Other Contingencies	3 Months Ended
	Mar. 31, 2014
Environmental Remediation Obligations [Abstract]	'
Environmental and Other Contingencies	'
	Note M – 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 increases and retroactive tax claims; royalty and revenue sharing increases; import and export controls; 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. Because governmental actions are often motivated by political considerations and may be taken without full consideration of their consequences, and 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 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 believes costs related to these sites will not have a material adverse affect on Murphy’s net income, financial condition or liquidity in a future period.
	The U.S. Environmental Protection Agency (EPA) formerly considered the Company to be a Potentially Responsible Party (PRP) at one Superfund site. Based on evidence provided by the Company, the EPA has determined that the Company is no longer considered a PRP at this site.
	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 these matters is not expected to have a material adverse effect on the Company’s net income, financial condition or liquidity in a future period.

Commitments

Commitments	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments	'
	Note N – Commitments
	The Company has entered into forward sales contracts to mitigate the price risk for a portion of its 2014 heavy oil and 2014 and 2015 natural gas sales volumes in Western Canada. The heavy oil blend sales contracts call for deliveries of 4,000 barrels per day in April through December 2014 that achieve netback values that average Cdn$55.14 per barrel. The natural gas contracts call for deliveries between April through December 2014 that average approximately 110 million cubic feet per day at prices averaging Cdn$4.04 per MCF, with the contracts calling for delivery at the NOVA inventory transfer sales point. The Company also has natural gas sales contracts calling for deliveries between January and December 2015 of approximately 65 million cubic feet per day at prices that average Cdn$4.13 per MCF. These oil and natural gas contracts have been accounted for as normal sales for accounting purposes.

New_Accounting_Principles

New Accounting Principles	3 Months Ended
	Mar. 31, 2014
Accounting Changes And Error Corrections [Abstract]	'
New Accounting Principles	'
	Note O – New Accounting Principles
	In April 2014, the Financial Accounting Standards Board (FASB) issued an Accounting Standards Update that changed the requirements for reporting discontinued operations. Under the new guidance, only disposals of components of an entity that represent a strategic shift that has or will have a major effect on an entity’s operations and financial results will be reported as discontinued operations in the financial statements. Under prior guidance, a component of an entity that is a reportable segment, an operating segment, a reporting unit, a subsidiary, or an asset group that has been or will be eliminated from ongoing operations and for which the Company will not have any significant continuing involvement with the component after the disposal was generally reported as discontinued operations. The FASB anticipates that fewer component disposals will be reported as discontinued operations under the new guidance. The new guidance also requires expanded disclosures about discontinued operations. The new guidance will be effective for the Company beginning in 2015. The new guidance is not to be applied to a component that is classified as held for sale before the effective date of the guidance.

Business_Segments

Business Segments	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Business Segments	'
	Note P – Business Segments
					Three Months Ended					Three Months Ended
					31-Mar-14					March 31, 20131
	(Millions of dollars)		Total Assets		External		Income			External			Income
			at March 31,		Revenues		(Loss)			Revenues			(Loss)
			2014
	Exploration and production2
	United States		$	4,967.80		485.5		103.1			408.9			93.8
	Canada			3,957.10		297.7		67.6			260.8			13.3
	Malaysia			6,076.10		492.8		162.3			560			205.2
	Other			142.9		0		(122.4	)		69.3			(80.4	)
	Total exploration and production			15,143.90		1,276.00		210.6			1,299.00			231.9
	Corporate			1,147.20		10.4		(41.3	)		(8.1	)		(49.2	)
	Assets/revenue/income from continuing operations			16,291.10		1,286.40		169.3			1,290.90			182.7
	Discontinued operations, net of tax			1,260.00		0		(14.0	)		0			177.9
	Total		$	17,551.10		1,286.40		155.3			1,290.90			360.6
	1	Reclassified to conform to current presentation.
	2	Additional details about results of oil and gas operations are presented in the tables on page 21.
	Due to the shutdown of production operations in Republic of the Congo, the Company now includes the results of these operations in the Other exploration and production segment in the above table.

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
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 three-month periods ended March 31, 2014 and 2013.
	(Thousands of dollars)	2014		2013
	Beginning balance at January 1	$	393,030		445,697
	Additions pending the determination of proved reserves		2,919		26,929
	Reclassifications to proved properties based on the determination of proved reserves		0		(28,398	)
	Balance at March 31	$	395,949		444,228
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.
		March 31
		2014							2013
	(Thousands of dollars)	Amount		No. of			No. of		Amount		No. of		No. of
				Wells			Projects				Wells		Projects
	Aging of capitalized well costs:
	Zero to one year	$	32,192		2			1		56,324		6		3
	One to two years		56,702		6			1		40,721		3		1
	Two to three years		31,224		2			0		79,446		8		2
	Three years or more		275,831		22			7		267,737		24		5
		$	395,949		32			9		444,228		41		11

Discontinued_Operations_Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]	'
Results of Operations Associated with Discontinued Operations	'
	The results of operations associated with these discontinued operations for the three-month periods ended March 31, 2014 and 2013 were as follows:
		Three Months
		Ended March 31,
	(Thousands of dollars)	2014			2013
	Revenues	$	1,432,386			5,515,538
	Income (loss) before income taxes, including a gain on disposal of $74,928 in 2013	$	(17,295	)		132,921
	Income tax benefit		(3,262	)		(44,995	)
	Income (loss) from discontinued operations	$	(14,033	)		177,916

Cash_Flow_Disclosures_Tables

Cash Flow Disclosures (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Cash Flow Activities	'
	Additional disclosures regarding cash flow activities are provided below.
		Three Months
		Ended March 31,
	(Thousands of dollars)	2014			2013
	Net (increase) decrease in operating working capital other than cash and cash equivalents (from continuing operations):
	Decrease (increase) in accounts receivable	$	(7,251	)		49,060
	Decrease in inventories		958			17,089
	Increase in prepaid expenses		(42,128	)		(53,970	)
	Decrease in deferred income tax assets		6,845			27,427
	Decrease in accounts payable and accrued liabilities		(4,923	)		(66,680	)
	Increase in current income tax liabilities		65,172			128,023
	Total	$	18,673			100,949
	Supplementary disclosures (including discontinued operations):
	Cash income taxes paid	$	101,295			47,877
	Interest paid less than amounts capitalized		(4,303	)		(10,519	)

Employee_and_Retiree_Benefit_P1

Employee and Retiree Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'
Components of Net Periodic Benefit Expense	'
	The table that follows provides the components of net periodic benefit expense for the three-month periods ended March 31, 2014 and 2013.
		Three Months Ended March 31,
								Other
		Pension Benefits						Postretirement Benefits
	(Thousands of dollars)	2014			2013			2014			2013
	Service cost	$	6,556			7,603			672			1,167
	Interest cost		8,215			6,431			1,278			1,234
	Expected return on plan assets		(8,480	)		(5,700	)		0			0
	Amortization of prior service cost		225			276			(21	)		(42	)
	Amortization of transitional liability		208			120			1			2
	Recognized actuarial loss		1,733			3,532			59			457
	Net periodic benefit expense	$	8,457			12,262			1,989			2,818

Incentive_Plans_Tables

Incentive Plans (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Share-Based Plans, Amounts Recognized	'
	Amounts recognized in the Consolidated Statements of Income with respect to share-based plans are as follows:
		Three Months Ended
		March 31,
	(Thousands of dollars)	2014		2013
	Compensation charged against income before tax benefit	$	15,301		17,833
	Related income tax benefit recognized in income		4,733		4,922

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income Per Common Share	'
	The following table reconciles the weighted-average shares outstanding used for these computations.
		Three Months Ended
		March 31,
	(Weighted-average shares)	2014		2013
	Basic method		181,367,565		190,810,201
	Dilutive stock options and restricted stock units		1,209,005		955,194
	Diluted method		182,576,570		191,765,395
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 2014 and 2013 periods but were not included in the computation of diluted EPS above because the incremental shares from assumed conversion were antidilutive.
		Three Months Ended
		March 31,
		2014		2013
	Antidilutive stock options excluded from diluted shares		1,555,015		3,794,002
	Weighted average price of these options	$	58.97	$	62.18

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Effective Income Tax Rates	'
	For the three-month periods in 2014 and 2013, the Company’s effective income tax rates were as follows:
		2014			2013
	Three months ended March 31		49.3	%		49.3	%

Financial_Instruments_and_Deri1

Financial Instruments and Derivatives (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
WTI Open Contracts	'
	WTI open contracts at March 31, 2014 were as follows:
	Dates	Volumes				Swap Prices
		(barrels per day)
	April – June 2014		24,000			$	96.41 per barrel
	July – September 2014		20,000			$	94.32 per barrel
	October – December 2014		12,000			$	91.72 per barrel
Fair Value of Derivative Instruments Not Designated as Hedging Instruments	'
	At March 31, 2014 and December 31, 2013, the fair value of derivative instruments not designated as hedging instruments are presented in the following table.
		March 31, 2014						December 31, 2013
	(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 payable		$	(21,367	)		Accounts receivable		$	1,970
	Foreign currency	Accounts receivable		$	3,411			Accounts payable		$	(1,038	)
Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments	'
	For the three-month periods ended March 31, 2014 and 2013, the gains and losses recognized in the Consolidated Statements of Income for derivative instruments not designated as hedging instruments are presented in the following table.
				Gain (Loss)
				Three Months Ended
	(Thousands of dollars)	Statement of Income		March 31,
	Type of Derivative Contract	Location		2014				2013
	Commodity	Sales and other		$	(18,414	)			0
		operating
		revenues
	Commodity	Discontinued			0				(4,210	)
		operations
	Foreign currency	Interest and other			3,436				(2,818	)
		income (loss)
				$	(14,978	)			(7,028	)
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 March 31, 2014 and December 31, 2013 are presented in the following table.
		31-Mar-14													31-Dec-13
	(Thousands of dollars)	Level 1				Level 2				Level 3			Total		Level 1		Level 2		Level 3		Total
	Assets:
	Commodity derivative contracts	$	0				0				0			0		0		1,970		0		1,970
	Foreign currency exchange derivative contracts		0				3,411				0			3,411		0		0		0		0
		$	0				3,411				0			3,411		0		1,970		0		1,970
	Liabilities:
	Nonqualified employee savings plans	$	13,393				0				0			13,393		13,267		0		0		13,267
	Commodity derivative contracts		0				21,367				0			21,367		0		0		0		0
	Foreign currency exchange derivative contracts		0				0				0			0		0		1,038		0		1,038
		$	13,393				21,367				0			34,760		13,267		1,038		0		14,305

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Components of Accumulated Other Comprehensive Income	'
	The components of Accumulated Other Comprehensive Income (AOCI) on the Consolidated Balance Sheets at March 31, 2014 and December 31, 2013 and the changes during the three months ended March 31, 2014 are presented net of taxes in the following table.
			Foreign			Retirement and			Deferred			Total1
			Currency			Postretirement			Loss on
			Translation			Benefit Plan			Interest
			Gains (Losses)1			Adjustments1			Rate
									Derivative
									Hedges1
	(Thousands of dollars)
	Balance at December 31, 2013			305,192			(116,956	)		(16,117	)		172,119
	Components of other comprehensive income (loss):
	Before reclassifications to income			(136,604	)		236			0			(136,368	)
	Reclassifications to income			0			1,229	2		483	3		1,712
	Net other comprehensive income (loss)			(136,604	)		1,465			483			(134,656	)
	Balance at March 31, 2014			168,588			(115,491	)		(15,634	)		37,463
	1	All amounts are presented net of income taxes.
	2	Reclassifications before taxes of $1,878 for the three-month period ended March 31, 2014 are included in the computation of net periodic benefit expense. See Note G for additional information. Related income taxes of $649 for the three-month period ended March 31, 2014 are included in Income tax expense.
	3	Reclassifications before taxes of $741 for the three-month period ended March 31, 2014 are included in Interest expense. Related income taxes of $258 for the three-month period ended March 31, 2014 are included in Income tax expense.

Business_Segments_Tables

Business Segments (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Reporting Information by Business Segments	'
					Three Months Ended					Three Months Ended
					31-Mar-14					March 31, 20131
	(Millions of dollars)		Total Assets		External		Income			External			Income
			at March 31,		Revenues		(Loss)			Revenues			(Loss)
			2014
	Exploration and production2
	United States		$	4,967.80		485.5		103.1			408.9			93.8
	Canada			3,957.10		297.7		67.6			260.8			13.3
	Malaysia			6,076.10		492.8		162.3			560			205.2
	Other			142.9		0		(122.4	)		69.3			(80.4	)
	Total exploration and production			15,143.90		1,276.00		210.6			1,299.00			231.9
	Corporate			1,147.20		10.4		(41.3	)		(8.1	)		(49.2	)
	Assets/revenue/income from continuing operations			16,291.10		1,286.40		169.3			1,290.90			182.7
	Discontinued operations, net of tax			1,260.00		0		(14.0	)		0			177.9
	Total		$	17,551.10		1,286.40		155.3			1,290.90			360.6
	1	Reclassified to conform to current presentation.
	2	Additional details about results of oil and gas operations are presented in the tables on page 21.

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
	Site
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Total capitalized exploratory well costs	$395,949,000	$393,030,000	$444,228,000	$445,697,000
Exploratory well costs capitalized more than one year	363,800,000	'	'	'
Number of drilling areas where appraisal/development is planned or under stages of completion	3	'	'	'
Malaysia [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Exploratory well costs capitalized more than one year	213,800,000	'	'	'
United States [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Exploratory well costs capitalized more than one year	116,200,000	'	'	'
Brunei	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Exploratory well costs capitalized more than one year	$33,800,000	'	'	'

Net_Changes_in_Capitalized_Exp

Net Changes in Capitalized Exploratory Well Costs (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Extractive Industries [Abstract]	'	'
Beginning balance at January 1	$393,030	$445,697
Additions pending the determination of proved reserves	2,919	26,929
Reclassifications to proved properties based on the determination of proved reserves	0	-28,398
Ending balance at March 31	$395,949	$444,228

Aging_of_Capitalized_Explorato

Aging of Capitalized Exploratory Well Costs (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
	Well	Well
	Project	Project
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Amount	$395,949	$444,228	$393,030	$445,697
No. of Wells	32	41	'	'
No. of Projects	9	11	'	'
Zero to one year [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Amount	32,192	56,324	'	'
No. of Wells	2	6	'	'
No. of Projects	1	3	'	'
One to two years [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Amount	56,702	40,721	'	'
No. of Wells	6	3	'	'
No. of Projects	1	1	'	'
Two to three years [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Amount	31,224	79,446	'	'
No. of Wells	2	8	'	'
No. of Projects	0	2	'	'
Three years or more [Member]	'	'	'	'
Projects with Exploratory Well Costs Capitalized for More than One Year [Line Items]	'	'	'	'
Amount	$275,831	$267,737	'	'
No. of Wells	22	24	'	'
No. of Projects	7	5	'	'

Inventories_Additional_Informa

Inventories - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Carrying value of inventories under LIFO method	$201.60	$268.60

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail) (USD $)	3 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013	Aug. 30, 2013
	Oil and Gas Properties [Member]	Murphy USA Inc [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'
Common stock outstanding	'	100.00%
After tax gain on sale of oil and natural gas production	$147.40	'

Results_of_Operations_Associat

Results of Operations Associated with Discontinued Operations (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]	'	'
Revenues	$1,432,386	$5,515,538
Income (loss) before income taxes, including a gain on disposal of $74,928 in 2013	-17,295	132,921
Income tax benefit	-3,262	-44,995
Income (loss) from discontinued operations	($14,033)	$177,916	[1]
[1]	Reclassified to conform to current presentation.

Results_of_Operations_Associat1

Results of Operations Associated with Discontinued Operations (Parenthetical) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]	'
Gain on disposal	$74,928

Financing_Arrangements_and_Deb1

Financing Arrangements and Debt - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Credit facility maximum borrowing capacity	$2,000,000,000
Credit facility, maturity date	30-Jun-17
Credit facility interest rate above LIBOR	1.25%
Line of credit facility fee	0.25%

Cash_Flow_Activities_Detail

Cash Flow Activities (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net (increase) decrease in operating working capital other than cash and cash equivalents (from continuing operations):	'	'
Decrease (increase) in accounts receivable	($7,251)	$49,060
Decrease in inventories	958	17,089
Increase in prepaid expenses	-42,128	-53,970
Decrease in deferred income tax assets	6,845	27,427
Decrease in accounts payable and accrued liabilities	-4,923	-66,680
Increase in current income tax liabilities	65,172	128,023
Total	18,673	100,949	[1]
Supplementary disclosures (including discontinued operations):	'	'
Cash income taxes paid	101,295	47,877
Interest paid less than amounts capitalized	($4,303)	($10,519)
[1]	Reclassified to conform to current presentation.

Components_of_Net_Periodic_Ben

Components of Net Periodic Benefit Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Pension Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	$6,556	$7,603
Interest cost	8,215	6,431
Expected return on plan assets	-8,480	-5,700
Amortization of prior service cost	225	276
Amortization of transitional liability	208	120
Recognized actuarial loss	1,733	3,532
Net periodic benefit expense	8,457	12,262
Other Postretirement Benefits [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost	672	1,167
Interest cost	1,278	1,234
Expected return on plan assets	0	0
Amortization of prior service cost	-21	-42
Amortization of transitional liability	1	2
Recognized actuarial loss	59	457
Net periodic benefit expense	$1,989	$2,818

Employee_and_Retiree_Benefit_P2

Employee and Retiree Benefit Plans - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Compensation And Retirement Disclosure [Abstract]	'
Contributions to benefit plans	$10.60
Expected benefit plan contributions to be made during the year	$31.90

Incentive_Plans_Additional_Inf

Incentive Plans - Additional Information (Detail) (USD $)

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Feb. 04, 2014

Mar. 31, 2014

Feb. 04, 2014

Feb. 04, 2014

Feb. 04, 2014

Feb. 05, 2014

Mar. 31, 2014

Feb. 04, 2014

Feb. 04, 2014

Feb. 04, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Performance-Based Restricted Stock Units [Member]

Performance-Based Restricted Stock Units [Member]

Performance-Based Restricted Stock Units [Member]

Performance-Based Restricted Stock Units [Member]

Time Based Restricted Stock Units (RSU) [Member]

Time Based Restricted Stock Units (RSU) [Member]

Time Based Restricted Stock Units (RSU) [Member]

SAR [Member]

Cash-Settled RSU (RSU-C) [Member]

Stock Options [Member]

Stock Options [Member]

Employee Stock Purchase Plan [Member]

2012 Long-Term Plan [Member]

Minimum [Member]

Maximum [Member]

Non-employee Director Plan [Member]

Non-employee Director Plan [Member]

Compensation Related Costs Share Based Payments Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long term plan expiration year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2022

Maximum number of shares available for issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

980,000

8,700,000

Maximum number of shares available for issuance, annual rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

Granted stock options

'

'

'

'

'

'

'

'

'

183,200

'

772,900

'

'

'

Granted stock options, exercise price

'

'

'

'

'

'

'

'

'

'

'

$55.82

'

'

'

Stock-based compensation, fair value assumption model

'

'

'

'Monte Carlo valuation model

'

'

'

'

'

'

'

'

'Black-Scholes valuation model

'

'

Granted stock options, valuation per option

'

'

'

'

'

'

'

'

'

'

'

$12.84

'

'

'

Granted restricted stock

'

'

464,300

'

'

'

233,400

43,848

'

'

170,900

'

'

'

'

Granted restricted stock, fair value

'

'

'

'

$33.90

$51.30

$55.82

$55.20

'

'

'

'

'

'

'

Granted restricted stock, vesting scheme

'

'

'

'

'

'

'

'

'These shares vest on the third anniversary of the date of grant.

'

'

'

'

'

'

Proceeds from exercise of stock options and employee stock purchase plans

$0

$1,281,000

[1]

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax benefits realized for the tax deductions from option exercises

$1,400,000

$700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Reclassified to conform to current presentation.

ShareBased_Plans_Amounts_Recog

Share-Based Plans, Amounts Recognized (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Compensation charged against income before tax benefit	$15,301	$17,833
Related income tax benefit recognized in income	$4,733	$4,922

WeightedAverage_Shares_Outstan

Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income Per Common Share (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Basic method	181,367,565	190,810,201	[1]
Dilutive stock options and restricted stock units	1,209,005	955,194
Diluted method	182,576,570	191,765,395	[1]
[1]	Reclassified to conform to current presentation.

Anti_Dilutive_Securities_Not_I

Anti Dilutive Securities Not Included in Computation of Diluted EPS (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Antidilutive stock options excluded from diluted shares	1,555,015	3,794,002
Weighted average price of these options	$58.97	$62.18

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014
Income Tax Examination [Line Items]	'
U.S. Federal statutory income tax rate	35.00%
United States [Member]	'
Income Tax Examination [Line Items]	'
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	'2010
Canada [Member]	'
Income Tax Examination [Line Items]	'
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	'2008
United Kingdom [Member]	'
Income Tax Examination [Line Items]	'
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	'2011
Malaysia [Member]	'
Income Tax Examination [Line Items]	'
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	'2006

Effective_Income_Tax_Rates_Det

Effective Income Tax Rates (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Effective income tax rate	49.30%	49.30%

WTI_Open_Contracts_Detail

WTI Open Contracts (Detail)	Mar. 31, 2014
	bbl
April to June 2014 [Member]	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'
Number of barrels	24,000
Natural gas deliveries contract average price per thousand cubic feet	96.41
July to September 2014 [Member]	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'
Number of barrels	20,000
Natural gas deliveries contract average price per thousand cubic feet	94.32
October to December 2014 [Member]	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'
Number of barrels	12,000
Natural gas deliveries contract average price per thousand cubic feet	91.72

Financial_Instruments_and_Deri2

Financial Instruments and Derivatives - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
		Scenario, Forecast [Member]	Commodity derivative contracts [Member]	Interest Rate Swap [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]
							Currency, Malaysian ringgit [Member]	Currency, Malaysian ringgit [Member]	Currency, U.S. Dollar	Currency, U.S. Dollar
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'	'	'	'	'	'	'	'	'	'
Fair value of commodity derivative contracts	'	'	$18,800,000	'	'	'	'	'	'	'
Short-term derivative instruments	'	'	'	'	'	'	133,500,000	274,000,000	23,000,000	20,000,000
Increase (decrease) in income before taxes due to the impact of marking to market of derivative contracts	'	'	'	'	3,400,000	-2,700,000	'	'	'	'
Maturities of notes payable	350,000,000	'	'	'	'	'	'	'	'	'
Deferred loss charged to income	700,000	'	'	'	'	'	'	'	'	'
Loss deferred for fair value of interest rate derivative contracts, net of tax	'	'	'	24,100,000	'	'	'	'	'	'
Interest expense due to deferred loss on interest rate swaps expected during the remaining nine months of 2014	'	$2,200,000	'	'	'	'	'	'	'	'

Fair_Value_of_Derivative_Instr

Fair Value of Derivative Instruments Not Designated as Hedging Instruments (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Commodity derivative contracts [Member]	Nondesignated [Member]	Nondesignated [Member]	Nondesignated [Member]	Nondesignated [Member]
		Commodity derivative contracts [Member]	Commodity derivative contracts [Member]	Foreign exchange derivative contract [Member]	Foreign exchange derivative contract [Member]
		Accounts Receivable [Member]	Accounts Payable [Member]	Accounts Receivable [Member]	Accounts Payable [Member]
Derivatives, Fair Value [Line Items]	'	'	'	'	'
Asset Derivatives	'	$1,970	'	$3,411	'
Liability Derivatives	($18,800)	'	($21,367)	'	($1,038)

Recognized_Gains_and_Losses_fo

Recognized Gains and Losses for Derivative Instruments Not Designated as Hedging Instruments (Detail) (Nondesignated [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	($14,978)	($7,028)
Commodity derivative contracts [Member] | Sales and other operating revenues [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	-18,414	0
Commodity derivative contracts [Member] | Discontinued operations [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	0	-4,210
Foreign Currency Contract [Member] | Interest and other income (loss) [Member]	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'
Amount of Gain (Loss) Recognized in Income on Derivative	$3,436	($2,818)

Carrying_Value_of_Assets_and_L

Carrying Value of Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Commodity derivative contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative liabilities	$18,800	'
Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	3,411	1,970
Derivative liabilities	34,760	14,305
Fair Value, Measurements, Recurring [Member] | Commodity derivative contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	1,970
Derivative liabilities	21,367	0
Fair Value, Measurements, Recurring [Member] | Nonqualified employee savings plans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative liabilities	13,393	13,267
Fair Value, Measurements, Recurring [Member] | Foreign exchange derivative contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	3,411	0
Derivative liabilities	0	1,038
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	13,393	13,267
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Commodity derivative contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Nonqualified employee savings plans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative liabilities	13,393	13,267
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member] | Foreign exchange derivative contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	3,411	1,970
Derivative liabilities	21,367	1,038
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Commodity derivative contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	1,970
Derivative liabilities	21,367	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Nonqualified employee savings plans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member] | Foreign exchange derivative contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	3,411	0
Derivative liabilities	0	1,038
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Commodity derivative contracts [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Nonqualified employee savings plans [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative liabilities	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member] | Foreign exchange derivative contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]	'	'
Derivative assets	0	0
Derivative liabilities	$0	$0

Components_of_Accumulated_Othe

Components of Accumulated Other Comprehensive Income (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	$172,119	[1]	'
Before reclassifications to income	-136,368	[1]	'
Reclassifications to income	1,712	[1]	'
Other comprehensive loss	-134,656	[1]	-114,530
Ending Balance	37,463	[1]	'
Foreign Currency Translation Gains (Losses) [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	305,192	[1]	'
Before reclassifications to income	-136,604	[1]	'
Reclassifications to income	0	[1]	'
Other comprehensive loss	-136,604	[1]	'
Ending Balance	168,588	[1]	'
Retirement and Postretirement Benefit Plan Adjustments [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	-116,956	[1]	'
Before reclassifications to income	236	[1]	'
Reclassifications to income	1,229	[1],[2]	'
Other comprehensive loss	1,465	[1]	'
Ending Balance	-115,491	[1]	'
Deferred Loss On Interest Rate Derivative Hedges [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	-16,117	[1]	'
Before reclassifications to income	0	[1]	'
Reclassifications to income	483	[1],[3]	'
Other comprehensive loss	483	[1]	'
Ending Balance	($15,634)	[1]	'
[1]	All amounts are presented net of income taxes.
[2]	Reclassifications before taxes of $1,878 for the three-month period ended March 31, 2014 are included in the computation of net periodic benefit expense. See Note G for additional information. Related income taxes of $649 for the three-month period ended March 31, 2014 are included in Income tax expense.
[3]	Reclassifications before taxes of $741 for the three-month period ended March 31, 2014 are included in Interest expense. Related income taxes of $258 for the three-month period ended March 31, 2014 are included in Income tax expense.

Components_of_Accumulated_Othe1

Components of Accumulated Other Comprehensive Income (Parenthetical) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]	'
Reclassifications before taxes, included in net periodic benefit expense	$1,878
Reclassifications income tax, included in net periodic benefit expense	649
Reclassifications before taxes, included in interest expense	741
Reclassifications income tax, included in interest expense	$258

Environmental_and_Other_Contin1

Environmental and Other Contingencies - Additional Information (Detail)	Mar. 31, 2014
	Location
Commitments And Contingencies Disclosure [Abstract]	'
Superfund site company is considered to be Potentially Responsible Party (PRP)	1

Commitments_Additional_Informa

Commitments - Additional Information (Detail) (Forward Contracts [Member])	3 Months Ended
	Mar. 31, 2014
	bbl
Heavy Oil [Member]	'
Commitments and Contingencies Disclosure [Line Items]	'
Notional amount, per day	4,000
Underlying derivative, volume	55.14
April through December 2014 Deliveries [Member] | Natural Gas [Member]	'
Commitments and Contingencies Disclosure [Line Items]	'
Notional amount, per day	110
Underlying derivative, volume	4.04
January through December 2015 Deliveries [Member] | Natural Gas [Member]	'
Commitments and Contingencies Disclosure [Line Items]	'
Notional amount, per day	65
Underlying derivative, volume	4.13

Segment_Reporting_Information_

Segment Reporting Information by Business Segments (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013		Dec. 31, 2013
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	$17,551,138		'		$17,509,484
External Revenues	1,286,400		1,290,938	[1]	'
Income (Loss)	155,253		360,599	[1]	'
Corporate, Non-Segment [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	1,147,200		'		'
External Revenues	10,400		-8,100	[1]	'
Income (Loss)	-41,300		-49,200	[1]	'
Exploration and production [Member] | Operating Segments [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	15,143,900	[2]	'		'
External Revenues	1,276,000	[2]	1,299,000	[1],[2]	'
Income (Loss)	210,600	[2]	231,900	[1],[2]	'
Exploration and production [Member] | Operating Segments [Member] | United States [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	4,967,800	[2]	'		'
External Revenues	485,500	[2]	408,900	[1],[2]	'
Income (Loss)	103,100	[2]	93,800	[1],[2]	'
Exploration and production [Member] | Operating Segments [Member] | Canada [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	3,957,100	[2]	'		'
External Revenues	297,700	[2]	260,800	[1],[2]	'
Income (Loss)	67,600	[2]	13,300	[1],[2]	'
Exploration and production [Member] | Operating Segments [Member] | Malaysia [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	6,076,100	[2]	'		'
External Revenues	492,800	[2]	560,000	[1],[2]	'
Income (Loss)	162,300	[2]	205,200	[1],[2]	'
Exploration and production [Member] | Operating Segments [Member] | Other Regions [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	142,900	[2]	'		'
External Revenues	0	[2]	69,300	[1],[2]	'
Income (Loss)	-122,400	[2]	-80,400	[1],[2]	'
Continuing Operations [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	16,291,100		'		'
External Revenues	1,286,400		1,290,900	[1]	'
Income (Loss)	169,300		182,700	[1]	'
Discontinued Operations [Member]	'		'		'
Segment Reporting Disclosure [Line Items]	'		'		'
Total Assets	1,260,000		'		'
External Revenues	0		0	[1]	'
Income (Loss)	($14,000)		$177,900	[1]	'
[1]	Reclassified to conform to current presentation.
[2]	Additional details about results of oil and gas operations are presented in the tables on page 21.