XML 37 R108.htm IDEA: XBRL DOCUMENT
v3.20.1

Commitments and Contingencies (Details) - CAD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Jun. 27, 2019 | Jan. 01, 2019 | Jun. 01, 2018
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power |  |  | $ 1,113 |
2020 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | $ 730 |  |  |
North West Redwater Partnership service toll | 133 |  |  |
Other | 26 |  |  |
2021 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | 722 |  |  |
North West Redwater Partnership service toll | 167 |  |  |
Other | 20 |  |  |
2022 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | 637 |  |  |
North West Redwater Partnership service toll | 157 |  |  |
Other | 17 |  |  |
2023 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | 726 |  |  |
North West Redwater Partnership service toll | 164 |  |  |
Other | 17 |  |  |
2024 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | 699 |  |  |
North West Redwater Partnership service toll | 156 |  |  |
Other | 17 |  |  |
Thereafter |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation | 7,907 |  |  |
North West Redwater Partnership service toll | 2,815 |  |  |
Other | $ 30 |  |  |
Commitments for oil and gas transportation, period of agreement | 20 years |  |  |
North West Redwater Partnership |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Percent of pro rata share of debt company has committed paying to joint venture | 25.00% |  |  | 25.00%
Interest payable included in service toll | $ 1,260 |  |  |
Term of commitment to joint venture | 30 years |  |  |
Offshore vessels and equipment | 2020 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | $ 69 |  |  |
Offshore vessels and equipment | 2021 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 63 |  |  |
Offshore vessels and equipment | 2022 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 9 |  |  |
Offshore vessels and equipment | 2023 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 0 |  |  |
Offshore vessels and equipment | 2024 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 0 |  |  |
Offshore vessels and equipment | Thereafter |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 0 |  |  |
Field equipment and power | 2020 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 27 |  |  |
Field equipment and power | 2021 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 21 |  |  |
Field equipment and power | 2022 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 20 |  |  |
Field equipment and power | 2023 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 21 |  |  |
Field equipment and power | 2024 |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | 20 |  |  |
Field equipment and power | Thereafter |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Offshore vessels and equipment, field equipment and power | $ 249 |  |  |
Devon |  |  |  |
Disclosure Of Commitments [Line Items] |  |  |  |
Product transportation |  | $ 2,381 |  |

X
- Definition Commitments For Oil And Gas Transportation + References No definition available. + Details
Name: | cnq_CommitmentsForOilAndGasTransportation
Namespace Prefix: | cnq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments For Oil And Gas Transportation, Period Of Agreement + References No definition available. + Details
Name: | cnq_CommitmentsForOilAndGasTransportationPeriodOfAgreement
Namespace Prefix: | cnq_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Commitments For Service Toll + References No definition available. + Details
Name: | cnq_CommitmentsForServiceToll
Namespace Prefix: | cnq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments In Relation To Joint Ventures, Interest Payable + References No definition available. + Details
Name: | cnq_CommitmentsInRelationToJointVenturesInterestPayable
Namespace Prefix: | cnq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments In Relation To Joint Ventures, Percentage Pro Rata Share Of Monthly Debt Cost + References No definition available. + Details
Name: | cnq_CommitmentsInRelationToJointVenturesPercentageProRataShareOfMonthlyDebtCost
Namespace Prefix: | cnq_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Commitments In Relation To Joint Ventures, Term + References No definition available. + Details
Name: | cnq_CommitmentsInRelationToJointVenturesTerm
Namespace Prefix: | cnq_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition [Line Items] for Disclosure Of Commitments [Table] + References No definition available. + Details
Name: | cnq_DisclosureOfCommitmentsLineItems
Namespace Prefix: | cnq_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum Lease Payments Payable Under Non-Cancellable Lease + References No definition available. + Details
Name: | cnq_MinimumLeasePaymentsPayableUnderNonCancellableLease
Namespace Prefix: | cnq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other Commitments + References No definition available. + Details
Name: | cnq_OtherCommitments
Namespace Prefix: | cnq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFourYearsAndNotLaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanFiveYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_JointVenturesAxis=cnq_NorthWestRedwaterPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cnq_OffshoreVesselsAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=cnq_FieldEquipmentAndPowerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=cnq_DevonCanadaCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |