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Segmented information (Tables)
12 Months Ended
Dec. 31, 2015
Segmented information  
Information by geographic area, revenues
In millionsYear ended December 31, 201520142013
Revenues
Canada$8,283$8,108$7,149
U.S. 4,3284,0263,426
Total revenues$12,611$12,134$10,575
Information by geographic area, net income
In millionsYear ended December 31, 201520142013

Net income
Canada$2,469$2,249$1,762
U.S. 1,069918850
Total net income$3,538$3,167$2,612
Information by geographic area, properties
In millionsDecember 31,20152014
Properties
Canada$16,737$15,798
U.S. 15,88712,716
Total properties$32,624$28,514