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Joint Arrangements - Joint Operations (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of joint operations [line items] |  |
Net Earnings (Loss) | $ 4,109 | $ 6,450
Husky-CNOOC Madura Ltd. |  |
Disclosure of joint operations [line items] |  |
Proportion of ownership interest in joint venture | 40.00% |
Share of income from equity-accounted affiliate | $ 57 | 23
Investments in joint ventures accounted for using equity method | 344 | 365
Distributions received | 93 | 42
Joint venture, contributions | 35 | 54
Net Earnings (Loss) | $ 70 | 33
Husky Midstream Limited Partnership |  |
Disclosure of joint operations [line items] |  |
Proportion of ownership interest in joint venture | 35.00% |
Investments in joint ventures accounted for using equity method | $ 0 | 0
Distributions received | 56 | 23
Joint venture, contributions | 62 | 31
Net Earnings (Loss) | 231 | 190
Unrecognised share of pre-tax net losses of joint ventures | (1) | (23)
Unrecognised share of losses of joint ventures, OCI | (2) | 8
Unrecognised share of losses of joint ventures | $ 31 | $ 28
WRB Refining LP |  |
Disclosure of joint operations [line items] |  |
Proportion of ownership interest in joint operation | 50.00% |
WRB Refining LP | Phillips 66 |  |
Disclosure of joint operations [line items] |  |
Proportion of ownership interest in joint operation | 50.00% |
BP-Husky Refining LLC |  |
Disclosure of joint operations [line items] |  |
Proportion of ownership interest in joint operation | 50.00% |

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