Exploration and Evaluation Assets (Details) - CAD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Exploration and Evaluation Assets
Beginning balance	$ 694	$ 631
Ending balance	636	694
Meadow Creek
Exploration and Evaluation Assets
Derecognition charges, before tax	240
Exploration and Evaluation Assets
Exploration and Evaluation Assets
Beginning balance	1,995	2,226
Acquisitions and additions	3	41
Transfers to oil and gas assets		(34)
Disposals and derecognition	(240)
Reclassified to assets held for sale		(239)
Foreign exchange adjustments		1
Ending balance	$ 1,758	$ 1,995

The decrease in intangible assets other than goodwill resulting from disposals. [Refer: Intangible assets other than goodwill]

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The increase (decrease) in intangible assets other than goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The increase (decrease) in intangible assets other than goodwill resulting from transfers. [Refer: Intangible assets other than goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 38
-IssueDate 2023-01-01
-Paragraph 118
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The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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The increase in intangible assets other than goodwill resulting from acquisitions through business combinations or additions.

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The decrease in intangible assets resulting from transfers to assets held for sale.

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The before tax amount of investments in joint operations derecognized due to properties no longer align with the Company's future development plans.

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