XML 75 R47.htm IDEA: XBRL DOCUMENT
v3.22.1

Interest and Other Financing Expense (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Borrowing costs [abstract] |
Disclosure of interest and other financing expense |
|  | 2021 |  | 2020 |  | 2019
Interest and other financing expense: |  |  |  |  |  |
Long-term debt |  | $ | 681 |  |  | $ | 785 |  |  | $ | 895 |
Lease liabilities |  | 62 |  |  | 67 |  |  | 70 |
Less: amounts capitalized on qualifying assets |  | — |  |  | (24) |  |  | (53) |
Total interest and other financing expense |  | 743 |  |  | 828 |  |  | 912 |
Total interest income and other |  | (32) |  |  | (72) |  |  | (76) |
Net interest and other financing expense |  | $ | 711 |  |  | $ | 756 |  |  | $ | 836 |

X
- Definition Disclosure Of Detailed Information About Finance Income (Cost) Explanatory [Table Text Block] + References No definition available. + Details
Name: | cnq_DisclosureOfDetailedInformationAboutFinanceIncomeCostExplanatoryTableTextBlock
Namespace Prefix: | cnq_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_BorrowingCostsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration