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Investments - Summary of Investments (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Investments	$ 305	$ 490
Investment in PrairieSky Royalty Ltd.
Disclosure of detailed information about financial instruments [line items]
Investments	228	345
Investment in Inter Pipeline Ltd.
Disclosure of detailed information about financial instruments [line items]
Investments	$ 77	$ 145

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- Definition

The amount of current investments.

+ References

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+ References

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