Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS (Asset Allocation Ranges and Actual Allocation, CRIP) (Details)

v3.6.0.2
BENEFIT PLANS (Asset Allocation Ranges and Actual Allocation, CRIP) (Details) - CRIP
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Canadian Equities    
Weighted-average assumptions used to determine net periodic benefit cost at December 31,    
Range minimum 25.00%  
Range maximum 50.00%  
Actual 34.70% 34.60%
International Equities (including U.S. Equities)    
Weighted-average assumptions used to determine net periodic benefit cost at December 31,    
Range minimum 0.00%  
Range maximum 19.00%  
Actual 14.90% 15.10%
Fixed Income    
Weighted-average assumptions used to determine net periodic benefit cost at December 31,    
Range minimum 40.00%  
Range maximum 60.00%  
Actual 49.10% 49.30%
Money Market    
Weighted-average assumptions used to determine net periodic benefit cost at December 31,    
Range minimum 0.00%  
Range maximum 10.00%  
Actual 1.30% 1.00%