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Significant partly-owned subsidiaries - Selected Income and Cash Flow Information (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of subsidiaries [line items] |  |
Total operating revenues | $ 23,468 | $ 22,757
Net earnings | 2,973 | 3,050
Net earnings attributable to NCI | 44 | 56
Total comprehensive income | 3,150 | 2,739
Total comprehensive income attributable to NCI | 49 | 54
Subsidiaries with material non-controlling interests |  |
Disclosure of subsidiaries [line items] |  |
Total operating revenues | 857 | 832
Net earnings | 131 | 179
Net earnings attributable to NCI | 42 | 56
Total comprehensive income | 149 | 172
Total comprehensive income attributable to NCI | 47 | 54
Cash dividends paid to NCI | 16 | 34
CTV Specialty hedge |  |
Disclosure of subsidiaries [line items] |  |
Total comprehensive income attributable to NCI | $ 4 | $ 3

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