XML 166 R138.htm IDEA: XBRL DOCUMENT v3.20.4
Property, Plant, and Equipment (Details) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]      
Gains (losses) on disposals of property, plant and equipment   $ (17)  
Property, plant and equipment expenditures $ 486 417 $ 277
Interest costs capitalised $ 8 $ 6 $ 2
Capitalisation rate of borrowing costs eligible for capitalisation 6.00% 5.90%  
Windrise Wind Facility      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures $ 156    
WindCharger Battery Storage Project      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures 6    
Kaybob Cogeneration Facility      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures 31    
Centralia Coal Mine      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures 17    
Pioneer Pipeline      
Disclosure of detailed information about property, plant and equipment [line items]      
Other cash and cash equivalents   $ 15  
Genesee Unit 3      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions   5  
Keephills 3      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions   308  
Coal generation | Keephills 3      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions   300  
Mining property and equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Gains (losses) on disposals of property, plant and equipment   (18)  
Gross carrying amount      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions 486 522  
Property, plant and equipment expenditures   417  
Gross carrying amount | US Wind Projects      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures   169  
Gross carrying amount | Pioneer Pipeline      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment expenditures   100  
Gross carrying amount | Coal generation      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions 0 0  
Gross carrying amount | Mining property and equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions 0 0  
Gross carrying amount | Gas generation      
Disclosure of detailed information about property, plant and equipment [line items]      
Additions 0 $ 0  
Property, plant and equipment expenditures $ 93