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Related Party Transactions - Summary of Revenues and Associated Expenses (Detail) - Joint ventures where entity is venturer - Husky Midstream Limited Partnership - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of transactions between related parties [line items]
Revenues from Construction and Management Services	$ 155	$ 160
Transportation Expenses	$ 278	$ 295

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- Definition

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.

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No definition available.

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- Definition

The amount of goods purchased by the entity in related party transactions. [Refer: Total for all related parties [member]]

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- Definition

The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Total for all related parties [member]]

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