Joint Arrangements - Joint Operations (Details)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Oil Sands \| Operated by Suncor \| Syncrude
JOINT ARRANGEMENTS
Country of Incorporation and Principal Place of Business	Canada	Canada
Ownership interest (as percent)	58.74%	58.74%
Exploration and Production \| Operated by Suncor \| Terra Nova
JOINT ARRANGEMENTS
Country of Incorporation and Principal Place of Business	Canada	Canada
Ownership interest (as percent)	48.00%	48.00%
Exploration and Production \| Non-operated \| Hibernia and the Hibernia South Extension Unit
JOINT ARRANGEMENTS
Country of Incorporation and Principal Place of Business	Canada	Canada
Exploration and Production \| Non-operated \| Hibernia
JOINT ARRANGEMENTS
Ownership interest (as percent)	19.48%	19.48%
Exploration and Production \| Non-operated \| Hibernia South Extension Unit
JOINT ARRANGEMENTS
Ownership interest (as percent)	20.00%	20.00%
Exploration and Production \| Non-operated \| Hebron
JOINT ARRANGEMENTS
Country of Incorporation and Principal Place of Business	Canada	Canada
Ownership interest (as percent)	21.03%	21.03%
Exploration and Production \| Non-operated \| White Rose and the White Rose Extensions
JOINT ARRANGEMENTS
Country of Incorporation and Principal Place of Business	Canada	Canada
Exploration and Production \| Non-operated \| White Rose
JOINT ARRANGEMENTS
Ownership interest (as percent)	38.625%	38.625%
Exploration and Production \| Non-operated \| White Rose Extensions
JOINT ARRANGEMENTS
Ownership interest (as percent)	40.00%	40.00%

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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- Definition

The principal place of business of a joint operation. [Refer: Total for all joint operations [member]; Principal place of business]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iii&doctype=Standard
-URIDate 2024-03-27

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- Definition

The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Total for all joint operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
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-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

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