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Consolidated Statements of Comprehensive Income (Loss) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Statement of comprehensive income [abstract] |  |
Profit (loss) for the year | $ (944) | $ (588)
Items that may be reclassified to profit (loss) |  |
Currency translation differences (net of taxes of $(17) and $(26)) | (100) | (312)
Change in fair value of debt securities (net of taxes of $nil and $nil) | 0 | 1
Items that may be reclassified to profit | (100) | (311)
Items that will not be reclassified to profit (loss) |  |
Change in fair value of marketable equity securities (net of taxes of $(3) and $(1)) | 24 | 6
Remeasurements of retirement benefit plans (net of taxes of $29 and $(31)) | (50) | 74
Items that will not be reclassified to profit | (26) | 80
Total other comprehensive income (loss) for the year | (126) | (231)
Total comprehensive income (loss) for the year | (1,070) | (819)
Total other comprehensive income (loss) attributable to: |  |
Shareholders of the company | (112) | (201)
Non-controlling interests | (14) | (30)
Total other comprehensive income (loss) for the year | (126) | (231)
Total comprehensive income (loss) attributable to: |  |
Shareholders of the company | (976) | (806)
Non-controlling interests | (94) | (13)
Total comprehensive income (loss) for the year | $ (1,070) | $ (819)

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