XML 69 R57.htm IDEA: XBRL DOCUMENT
v3.21.2

Financial Instruments and Risk Management (Narrative) (Details) barrels_per_day in Thousands, $ in Millions | 6 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 USD ($) barrels_per_day contract OffsettingPosition $ / bbl | Dec. 31, 2020 barrels_per_day OffsettingPosition $ / bbl | Jun. 30, 2020 barrels_per_day contract $ / bbl | Dec. 31, 2021 barrels_per_day $ / bbl | Dec. 31, 2019 Acquisition
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Amount of loss reclassified to interest expense | $ | $ (2.1) |  |  |  |
Number of foreign currency derivatives (in contracts) | contract | 0 |  | 0 |  |
Number of businesses acquired (in acquisitions) | Acquisition |  |  |  |  | 2
Number of offsetting positions (in offsetting positions) | OffsettingPosition | 0 | 0 |  |  |
Commodity derivative contracts |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Daily production commitment (barrels per day) | barrels_per_day | 45 | 2 | 45 |  |
Average forward price (in dollars per barrel) | $ / bbl | 42.77 | 41.54 | 56.42 |  |
Forecast | Commodity derivative contracts |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Average forward price (in dollars per barrel) | $ / bbl |  |  |  | 44.88 |
Forecast | Commodity derivative contracts | Subsequent Event |  |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |  |
Daily production commitment (barrels per day) | barrels_per_day |  |  |  | 20 |

X
- Definition Number Of Offsetting Positions + References No definition available. + Details
Name: | mur_NumberOfOffsettingPositions
Namespace Prefix: | mur_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
Name: | us-gaap_InterestRateCashFlowHedgeGainLossReclassifiedToEarningsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
Name: | us-gaap_NumberOfBusinessesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of foreign currency exchange rate derivatives held by the entity at the reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 + Details
Name: | us-gaap_NumberOfForeignCurrencyDerivativesHeld
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of daily production of the applicable energy source. + References No definition available. + Details
Name: | us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |