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Consolidated Statements of Comprehensive Income (Parenthetical) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Consolidated Statements of Comprehensive Income |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax | $ 1 | $ 0
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax | 4 | 1
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Tax | 1 | (9)
Other Comprehensive Income (Loss), Tax, Total | 2 | $ 10
Net investment in United States dollar denominated operations |  |
Hybrid Instruments [Line Items] |  |
Hybrid Notes as a hedge of the foreign currency exposure | $ 1,200 |

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