XML 42 R14.htm IDEA: XBRL DOCUMENT
v3.22.1

Exploration and Evaluation Assets | 12 Months Ended
--- | ---
Dec. 31, 2021
Exploration For And Evaluation Of Mineral Resources [Abstract] |
Exploration and Evaluation Assets | Exploration and Evaluation Assets
| Exploration and Production | Oil Sands Mining and Upgrading | Total
| North America | North Sea | Offshore Africa |  |
Cost |  |  |  |  |
At December 31, 2019 | $ | 2,258 |  | $ | — |  | $ | 69 |  | $ | 252 |  | $ | 2,579 |
Additions/Acquisitions | 40 |  | — |  | 15 |  | — |  | 55 |
Transfers to property, plant and equipment | (194) |  | — |  | — |  | — |  | (194) |
Derecognitions and other | (3) |  | — |  | — |  | — |  | (3) |
Foreign exchange adjustments | — |  | — |  | (1) |  | — |  | (1) |
At December 31, 2020 | 2,101 |  | — |  | 83 |  | 252 |  | 2,436 |
Additions/Acquisitions | 30 |  | — |  | 8 |  | — |  | 38 |
Transfers to property, plant and equipment | (73) |  | — |  | — |  | (150) |  | (223) |
Derecognitions and other | (1) |  | — |  | — |  | — |  | (1) |
At December 31, 2021 | $ | 2,057 |  | $ | — |  | $ | 91 |  | $ | 102 |  | $ | 2,250 |
On December 17, 2021, the Company completed the acquisition of all the issued and outstanding common shares of Storm Resources Ltd. ("Storm") for total cash consideration of $771 million, including $13 million of exploration and evaluation assets (note 7). During 2020, the Company completed the acquisition of all the issued and outstanding shares of Painted Pony Energy Ltd. ("Painted Pony") for total cash consideration of $111 million, including $15 million of exploration and evaluation assets (note 7). During 2019, the Company completed the acquisition of substantially all the assets of Devon Canada Corporation ("Devon") including thermal in situ and heavy crude oil assets, for total cash consideration of $3,412 million, including $91 million of exploration and evaluation assets (note 7).

X
- Definition Exploration For And Evaluation Of Mineral Resources [Abstract] + References No definition available. + Details
Name: | cnq_ExplorationForAndEvaluationOfMineralResourcesAbstract
Namespace Prefix: | cnq_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for exploration and evaluation assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2021-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2021-en-r&doctype=Standard&dita_xref=IFRS06_g23-25_TI -URIDate 2021-03-24 + Details
Name: | ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration