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Segmented information (Tables)
12 Months Ended
Dec. 31, 2016
Segmented information  
Information by geographic area, revenues
In millionsYear ended December 31, 201620152014
Revenues
Canada$7,971$8,283$8,108
U.S. 4,0664,3284,026
Total revenues$12,037$12,611$12,134
Information by geographic area, net income
In millionsYear ended December 31, 201620152014

Net income
Canada$2,708$2,469$2,249
U.S. 9321,069918
Total net income$3,640$3,538$3,167
Information by geographic area, properties
In millionsDecember 31,20162015
Properties
Canada$17,445$16,737
U.S. 16,31015,887
Total properties$33,755$32,624