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Revenue from Contracts with Customers (Current Long-Term Contracts Outstanding) (Details) - Canada | Sep. 30, 2022 Boe MMcf
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Q4 2022 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 8
Q4 2022 | Contracts to sell natural gas at CAD fixed prices |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 5
Q4 2022 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 20
Q4 2023 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 25
Q4 2023 | Contracts to sell natural gas at CAD fixed prices |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 38
Q4 2024 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 31
Q4 2024 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 15
Q4 2024 | Contracts to sell natural gas at CAD fixed prices |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 100
Q4 2024 | Contracts to sell natural gas at CAD fixed prices |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 34
Q4 2026 | Contracts to sell natural gas at USD index pricing |
Disaggregation of Revenue [Line Items] |
Remaining performance obligation | 49
Q3 2023 | Contracts to sell natural gas liquids at CAD pricing |
Disaggregation of Revenue [Line Items] |
Revenue, remaining performance obligation, oil quantity per day | Boe | 952

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- Definition Revenue, Remaining Performance Obligation, Oil Quantity Per Day + References No definition available. + Details
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Period Type: | instant

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- Definition Revenue, Remaining Performance Obligation, Quantity Per Day + References No definition available. + Details
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Namespace Prefix: | mur_
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Balance Type: | na
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- 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
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- Details
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Period Type: |

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- Details
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- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=mur_UsdIndexPricingMember
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ContractWithCustomerBasisOfPricingAxis=mur_CADFixedPriceMember
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Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter420222Member
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter42023Member
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Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter42024Member
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Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter42024No2Member
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Data Type: | na
Balance Type: |
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter42024No3Member
Namespace Prefix: |
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter42026Member
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- Details
Name: | us-gaap_ContractWithCustomerDurationAxis=mur_EndDateQuarter32023Member
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- Details
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