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intangible assets and goodwill - Business acquisition pro forma information (Details) - CAD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Pro forma Information |  |
Reported Operating revenues | $ 14,368 | $ 13,408
Reported Net income | 1,624 | $ 1,578
Pro forma Operating revenues | 14,468 |
Pro forma Net income | $ 1,628 |
Net income per Common Share |  |
Basic | $ 2.68 | $ 2.63
Diluted | 2.68 | $ 2.63
Pro forma Basic | 2.68 |
Pro forma Diluted | $ 2.68 |
AlarmForce Industries Inc. |  |
Net income per Common Share |  |
Reported Operating revenues of acquiree | $ 17 |
Reported Net income of acquiree | 0 |
Xavient Information Systems |  |
Net income per Common Share |  |
Reported Operating revenues of acquiree | 166 |
Reported Net income of acquiree | 2 |
Medisys Health Group Inc. |  |
Net income per Common Share |  |
Reported Operating revenues of acquiree | 48 |
Reported Net income of acquiree | $ 0 |

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