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Joint Arrangements - Husky Midstream Limited Partnership (Details) - CAD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Disclosure of joint ventures [line items] |  |  |  |  |
Net Earnings (Loss) | $ 1,864,000 | $ 1,609,000 | $ 3,366,000 | $ 5,666,000 |
Husky Midstream Limited Partnership |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Share of equity investment |  |  | 35.00% |  |
Net Earnings (Loss) |  |  | $ 118,000 | 112,000 |
Unrecognised share of pre-tax net losses of joint ventures |  |  | 20,000 | 14,000 |
Investments in Equity-Accounted Affiliates | $ 0 |  | 0 |  | $ 0
Unrecognised share of losses of joint ventures |  |  | 42,000 |  | $ 28,000
Dividends received |  |  | 56,000 | 22,000 |
Joint venture, contributions |  |  | $ 62,000 | $ 30,000 |
Husky Midstream Limited Partnership | Power Assets Holding Ltd. |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Share of equity investment |  |  | 49.00% |  |
Husky Midstream Limited Partnership | Cheung Kong Infrastructure Holdings Ltd. |  |  |  |  |
Disclosure of joint ventures [line items] |  |  |  |  |
Share of equity investment |  |  | 16.00% |  |

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