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Joint Arrangements - Joint Operations (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Oil Sands | Operated by Suncor | Fort Hills Energy Limited Partnership |  |  |
JOINT ARRANGEMENTS |  |  |
Country of Incorporation and Principal Place of Business |  | Canada | Canada
Ownership interest (as percent) | 68.76% | 100.00% | 54.11%
Additional interest acquired (as a percent) | 14.65% | 31.23% |
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 | Buzzard |  |  |
JOINT ARRANGEMENTS |  |  |
Country of Incorporation and Principal Place of Business |  |  | United Kingdom
Ownership interest (as percent) |  |  | 29.89%
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 | Harouge Oil Operations |  |  |
JOINT ARRANGEMENTS |  |  |
Country of Incorporation and Principal Place of Business |  | Libya | Libya
Ownership interest (as percent) |  | 49.00% | 49.00%
Exploration and Production | Non-operated | North Sea Rosebank Project |  |  |
JOINT ARRANGEMENTS |  |  |
Country of Incorporation and Principal Place of Business |  |  | United Kingdom
Ownership interest (as percent) |  |  | 40.00%
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%

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