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Acquisitions - Terra Nova Narrative (Details) - Terra Nova - CAD ($) $ in Millions | Dec. 31, 2022 | Sep. 08, 2021
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Disclosure of detailed information about business combination [line items] |  |
Percentage of working interest acquired |  | 2100.00%
Working interest, percentage | 3400.00% |
Consideration paid for working interest in asset acquisition |  | $ 3
Cash acquired in asset acquisition |  | 78
Property, plant and equipment acquired in asset acquisition |  | 84
Decommissioning liabilities assumed in asset acquisition |  | $ 159

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- Details
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