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Consolidated Statements of Comprehensive Income (Parenthetical) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of comprehensive income [abstract]      
Unrealized income (loss), tax $ 13 $ 0 $ 9
Reclassification to net earnings (loss), tax $ 5 $ 6 $ 5