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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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Line Of Credit Facility, Maximum Borrowing Capacity Extended Term

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Line Of Credit Facility, Maximum Borrowing Capacity, Reduction

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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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Recognized Share Of Losses Of Joint Ventures

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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)		6 Months Ended	12 Months Ended
Other Long-Term Assets - Narrative (Details)	Jun. 30, 2021 CAD ($)	Dec. 31, 2021 CAD ($)	Dec. 31, 2021 CAD ($) bbl	Dec. 31, 2020 CAD ($)	Dec. 31, 2019 CAD ($)
Disclosure of joint ventures [line items]
Toll payer percent for others			75.00%
Repayment of North West Redwater Partnership subordinated debt advances			$ 555,000,000	$ 124,000,000	$ 0
Borrowings		$ 14,694,000,000	$ 14,694,000,000	$ 21,453,000,000
North West Redwater Partnership
Disclosure of joint ventures [line items]
Company's voting percent interest in joint venture			50.00%
Barrels of bitumen feedstock processed per day \| bbl			50,000
Processing agreement, barrels of bitumen feedstock per date for the Company \| bbl			12,500
Processing agreement, barrels of bitumen feedstock per date for others \| bbl			37,500
Percent of pro rata share of debt company has committed paying to joint venture, toll payer percent		25.00%	25.00%	25.00%
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
Cumulative unrecognised share of losses of joint ventures		$ 562,000,000	562,000,000	$ 153,000,000
Unrecognised share of losses of joint ventures			9,000,000	94,000,000	59,000,000
Recognized share of losses of joint ventures					$ 287,000,000
Investments in joint ventures		$ 0	$ 0
Subordinate Debt \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		6.00%	6.00%
Senior Secured Bonds \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		2.55%	2.55%
Syndicated credit facility \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Maximum credit facility		$ 3,500,000,000	$ 3,500,000,000
Series L Senior Secured Bonds Due December 2023 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		1.20%	1.20%
Maximum credit facility		$ 500,000,000	$ 500,000,000
Series M Senior Secured Bonds Due December 2026 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		2.00%	2.00%
Maximum credit facility		$ 500,000,000	$ 500,000,000
Series N Senior Secured Bonds Due June 2031 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		2.80%	2.80%
Maximum credit facility		$ 1,000,000,000	$ 1,000,000,000
Series O Senior Secured Bonds Due June 2051 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings, interest rate		3.75%	3.75%
Maximum credit facility		$ 600,000,000	$ 600,000,000
Revolving Credit Facility Maturing June 2024 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Maximum credit facility		$ 2,000,000,000	$ 2,000,000,000
Maximum credit facility extended term		3 years	3 years
Non Revolving Credit Facility Maturing June 2023 \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Maximum credit facility	$ 1,500,000,000	$ 1,000,000,000	$ 1,000,000,000
Maximum credit facility extended term		2 years	2 years
Maximum borrowing capacity reduction		$ 500,000,000
North West Redwater Partnership
Disclosure of joint ventures [line items]
Partnership distributions			$ 800,000,000
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 \| Alberta Petroleum Marketing Commission
Disclosure of joint ventures [line items]
Partnership interest transferred	50.00%
North West Redwater Partnership \| Syndicated credit facility \| North West Redwater Partnership
Disclosure of joint ventures [line items]
Borrowings		$ 1,981,000,000	$ 1,981,000,000	$ 2,866,000,000