Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
BENEFIT PLANS - Asset Allocation Ranges and Actual Allocation, CRIP (Details) - Other Benefits - Canada
Dec. 31, 2018
Dec. 31, 2017
Canadian Equities    
Defined Benefit Plan Disclosure [Line Items]    
Actual 35.70% 35.20%
International Equities (including U.S. Equities)    
Defined Benefit Plan Disclosure [Line Items]    
Actual 15.60% 14.90%
Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Actual 48.20% 49.10%
Money Market    
Defined Benefit Plan Disclosure [Line Items]    
Actual 0.50% 0.80%
Minimum | Canadian Equities    
Defined Benefit Plan Disclosure [Line Items]    
Range 25.00%  
Minimum | International Equities (including U.S. Equities)    
Defined Benefit Plan Disclosure [Line Items]    
Range 0.00%  
Minimum | Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Range 40.00%  
Minimum | Money Market    
Defined Benefit Plan Disclosure [Line Items]    
Range 0.00%  
Maximum | Canadian Equities    
Defined Benefit Plan Disclosure [Line Items]    
Range 50.00%  
Maximum | International Equities (including U.S. Equities)    
Defined Benefit Plan Disclosure [Line Items]    
Range 38.00%  
Maximum | Fixed Income    
Defined Benefit Plan Disclosure [Line Items]    
Range 60.00%  
Maximum | Money Market    
Defined Benefit Plan Disclosure [Line Items]    
Range 10.00%