RELATED PARTY TRANSACTIONS (Details) - Husky Midstream Limited Partnership - Joint ventures where entity is venturer - CAD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Disclosure of transactions between related parties [line items] | ||||
| Revenues from Construction and Management Services | $ 53 | $ 50 | $ 129 | $ 116 |
| Transportation Expenses | $ 65 | $ 66 | $ 200 | $ 203 |
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