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Investments - Summary of Investments (Details) - CAD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of detailed information about financial instruments [line items] |  |
Investments | $ 490 | $ 524
Investment in PrairieSky Royalty Ltd. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Investments | 345 | 400
Investment in Inter Pipeline Ltd. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Investments | $ 145 | $ 124

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- Details
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- Details
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