XML 75 R64.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments (Narrative) (Details) - Natural Gas Per Thousand Cubic Feet [Member] - July 2018 to December 2020 [Member] | Jun. 30, 2018 MMcf / D $ / Mcf
--- | ---
Commitments and Contingencies Disclosure [Line Items] |
Notional amount, per day | MMcf / D | 59
Swap price (per share) | $ / Mcf | 2.81

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Commitments and Contingencies Disclosure [Line Items] + References No definition available. + Details
Name: | mur_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | mur_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The delivery price committed to in the contract. + References No definition available. + Details
Name: | us-gaap_OilAndGasDeliveryCommitmentsAndContractsFixedPrice
Namespace Prefix: | us-gaap_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis=us-gaap_NaturalGasPerThousandCubicFeetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=mur_DeliveryPeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |