XML 80 R54.htm IDEA: XBRL DOCUMENT
v3.22.0.1

EXPLORATION AND EVALUATION ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
EXPLORATION AND EVALUATION ASSETS. |
Exploration and Evaluation Assets rollforward | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31 |  | December 31 | ​
($ millions) |  | 2021 |  | 2020 |
Beginning of year |  | 2 286 |  | 2 428 | ​
Acquisitions and additions |  | 2 |  | 176 | ​
Transfers to oil and gas assets |  | - |  | (170) | ​
Dry hole expenses |  | - |  | (80) | ​
Disposals and derecognition |  | (54) |  | (70) | ​
Foreign exchange adjustments |  | (8) |  | 2 | ​
End of year |  | 2 226 |  | 2 286 | ​

X
- Definition n/a + References No definition available. + Details
Name: | su_DisclosureOfExplorationAndEvaluationAssetsAbstract
Namespace Prefix: | su_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The rollforward disclosure of exploration and evaluation assets. + References No definition available. + Details
Name: | su_RollForwardDisclosureOfExplorationAndEvaluationAssetsTableTextBlock
Namespace Prefix: | su_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration