Percentage Of Common Stock Shares Outstanding

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- Definition

Percentage Of Ownership In Subsidiaries

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No definition available.

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- Definition

Percentage Of Tax Relief On Oil And Gas Decommissioning Costs

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No definition available.

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- Definition

Provision Of Specified Service Description

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No definition available.

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- Definition

Spin Off Stock Conversion Ratio

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No definition available.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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-Glossary Asset Retirement Obligation

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- Definition

This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50% or less owned persons accounted for using the equity method.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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- Definition

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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- Definition

The effect of liquidating LIFO (last in first out) inventory layers on income.

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The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

+ References

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- Definition

This element represents the amount of gain (loss) on sale of properties during the reporting period net of the applicable income taxes realized.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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-Name Accounting Standards Codification

-Glossary Investing Activities

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Discontinued Operations (Narrative) (Details) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended			0 Months Ended
Discontinued Operations (Narrative) (Details) (USD $)	Aug. 30, 2013	Jul. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Jan. 29, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stock conversion ratio	0.25mur_SpinOffStockConversionRatio
Cash Dividends Paid to Parent Company				$ 650,000,000
Borrowed funds under credit facility			3,001,626,000us-gaap_DebtAndCapitalLeaseObligations	2,962,812,000us-gaap_DebtAndCapitalLeaseObligations
Provision Of Specified Service Periods			The agreement provides for the provision of specified services, generally for a period of up to 18 months, with a possible extension of six months (an aggregate of 24 months), on a full cost basis.
Asset Retirement Obligation			875,728,000us-gaap_AssetRetirementObligation	880,003,000us-gaap_AssetRetirementObligation	751,583,000us-gaap_AssetRetirementObligation
United Kingdom, corporation tax rate, tax relief on oil and gas decommissioning costs		62.00%			50.00%
United Kingdom, increase in tax expense of discontinued operations					5,523,000
Proceeds From Sale Of Productive Assets			1,467,046,000	1,650,000	99,000
Inventories accounted for under the LIFO method			10,954,000us-gaap_LIFOInventoryAmount	318,628,000us-gaap_LIFOInventoryAmount
Decrease amount of inventory that would have been valued using the FIFO method			44,881,000	268,608,000
U.K. refining and marketing assets [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Retirement Obligation			21,000,000
Asset Impairment Charges			269,200,000	73,000,000
Effect of LIFO Inventory Liquidation on Income			209,600,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax			101,700,000
Ethanol Plant in Hereford, Texas [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges					60,988,000
U.K. Oil and Gas Production [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
After tax gain on sale of oil and natural gas production				216,147,000
U.K. Retail Marketing Operation [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds From Sale Of Productive Assets						211,965,000
Subsequent Event [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds From Sale Of Productive Assets							417,200,000
Murphy USA Inc [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Common stock outstanding	100.00%
Percentage Of Ownership In Murphy USA Inc.	100.00%
Cash Dividends Paid to Parent Company	650,000,000