Commitments In Relation To Joint Ventures, Percentage Pro Rata Share Of Monthly Debt Cost

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Commitments In Relation To Joint Ventures, Term

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Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day

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Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Company

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Joint Venture, Processing Agreement, Barrels Of Bitumen Feedstock Processed Per Day, Portion Related To Others

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Line Of Credit Facility, Maximum Borrowing Capacity1

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Optimization Transaction Extended Period

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Partnership Distributions

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Partnership Interest Transferred

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Toll Payer Percent For Others

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The amount of outstanding funds that the entity is obligated to repay.

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The interest rate on borrowings. [Refer: Borrowings]

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The cash inflow from the repayment of advances and loans made to other parties (other than advances and loans of a financial institution), classified as investing activities.

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The cumulative amount of the unrecognised share of losses of joint ventures if the entity has stopped recognising its share of losses when applying the equity method. [Refer: Joint ventures [member]; Unrecognised share of losses of joint ventures]

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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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The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

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The proportion of the voting rights in a joint venture held by the entity. [Refer: Joint ventures [member]]

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The amount of the unrecognised share of joint ventures' losses if the entity has stopped recognising its share of losses when applying the equity method. [Refer: Joint ventures [member]]

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Other Long-Term Assets - Narrative (Details)		12 Months Ended
Other Long-Term Assets - Narrative (Details)	Jun. 30, 2021	Dec. 31, 2022 CAD ($) bbl	Dec. 31, 2021 CAD ($)	Dec. 31, 2020 CAD ($)
Disclosure of joint ventures [line items]
Toll payer percent for others		75.00%
Repayment of North West Redwater Partnership subordinated debt advances		$ 0	$ 555,000,000	$ 124,000,000
Borrowings		$ 11,445,000,000	14,694,000,000
North West Redwater Partnership
Disclosure of joint ventures [line items]
Partnership distributions			$ 800,000,000
North West Redwater Partnership
Disclosure of joint ventures [line items]
Company's voting percent interest in joint venture		50.00%
Processing agreement, barrels of bitumen feedstock per date for the Company \| bbl		12,500
Percent of pro rata share of debt company has committed paying to joint venture, toll payer percent		25.00%
Processing agreement, barrels of bitumen feedstock per date for others \| bbl		37,500
Term of commitment to joint venture		40 years
Optimization transaction extended period			10 years
Repayment of North West Redwater Partnership subordinated debt advances			$ 555,000,000
Partnership distributions			400,000,000
Investments in joint ventures		$ 0
Cumulative unrecognised share of losses of joint ventures		551,000,000	562,000,000
Unrecognised share of losses of joint ventures		$ 11,000,000	$ 9,000,000	$ 94,000,000
North West Redwater Partnership \| Subordinate Debt
Disclosure of joint ventures [line items]
Borrowings, interest rate			6.00%
North West Redwater Partnership \| Senior Secured Bonds
Disclosure of joint ventures [line items]
Borrowings, interest rate			2.55%
North West Redwater Partnership \| Series L Senior Secured Bonds Due December 2023
Disclosure of joint ventures [line items]
Borrowings, interest rate		1.20%
Maximum credit facility		$ 500,000,000
North West Redwater Partnership \| Series M Senior Secured Bonds Due December 2026
Disclosure of joint ventures [line items]
Borrowings, interest rate		2.00%
Maximum credit facility		$ 500,000,000
North West Redwater Partnership \| Series N Senior Secured Bonds Due June 2031
Disclosure of joint ventures [line items]
Borrowings, interest rate		2.80%
Maximum credit facility		$ 1,000,000,000
North West Redwater Partnership \| Series O Senior Secured Bonds Due June 2051
Disclosure of joint ventures [line items]
Borrowings, interest rate		3.75%
Maximum credit facility		$ 600,000,000
North West Redwater Partnership \| Syndicated credit facility
Disclosure of joint ventures [line items]
Maximum credit facility		3,175,000,000	$ 3,000,000,000
North West Redwater Partnership \| Revolving Credit Facility
Disclosure of joint ventures [line items]
Maximum credit facility		2,175,000,000
North West Redwater Partnership \| Revolving Credit Facility Maturing in June 2023
Disclosure of joint ventures [line items]
Maximum credit facility		118,000,000
North West Redwater Partnership \| Revolving Credit Facility Maturing in June 2025
Disclosure of joint ventures [line items]
Maximum credit facility		2,057,000,000
North West Redwater Partnership \| Non Revolving Credit Facility
Disclosure of joint ventures [line items]
Maximum credit facility		1,000,000,000
North West Redwater Partnership \| Non Revolving Credit Facility Maturing June 2023
Disclosure of joint ventures [line items]
Maximum credit facility		60,000,000
North West Redwater Partnership \| Non Revolving Credit Facility Maturing June 2025
Disclosure of joint ventures [line items]
Maximum credit facility		940,000,000
North West Redwater Partnership \| Letter of Credit
Disclosure of joint ventures [line items]
Maximum credit facility		$ 150,000,000
North West Redwater Partnership \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Barrels of bitumen feedstock processed per day \| bbl		50,000
North West Redwater Partnership \| North West Redwater Partnership \| Syndicated credit facility
Disclosure of joint ventures [line items]
Borrowings		$ 2,318,000,000	$ 1,981,000,000
North West Redwater Partnership \| North West Redwater Partnership \| Alberta Petroleum Marketing Commission
Disclosure of joint ventures [line items]
Partnership interest transferred	50.00%