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Segmented Information (Tables)
12 Months Ended
Dec. 31, 2020
Segment Reporting [Abstract]  
Revenue by geographic areas
The following tables provide information by geographic area:
In millionsYear ended December 31,202020192018
Revenues
Canada$9,588 $10,167 $9,610 
U.S.4,231 4,750 4,711 
Total revenues$13,819 $14,917 $14,321 
Net income by geographic areas
Net income
Canada$2,632 $3,131 $3,163 
U.S.930 1,085 1,165 
Total net income$3,562 $4,216 $4,328 
Long-lived assets by geographic areas
In millionsDecember 31,20202019
Properties
Canada$22,235 $21,482 
U.S.17,834 18,187 
Total properties$40,069 $39,669