XML 123 R96.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
FINANCIAL RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Changes in Fair Value of Derivatives (Details) - CAD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year $ 1,500,000,000 $ 1,094,000,000
Proceeds received from settlement of derivatives (18,829,000,000) (22,222,000,000)
Payment on derivatives settled 18,865,000,000 21,834,000,000
Increase (decrease) in fair value of derivatives (97,000,000) 794,000,000
Derivative financial assets, end of year 1,439,000,000 1,500,000,000
Debt derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 1,373,000,000  
Derivative financial liabilities, beginning of year   (23,000,000)
Proceeds received from settlement of derivatives (17,620,000,000) (19,368,000,000)
Payment on derivatives settled 17,630,000,000 19,305,000,000
Increase (decrease) in fair value of derivatives (80,000,000) 127,000,000
Derivative financial assets, end of year 1,383,000,000 1,373,000,000
Derivative financial liabilities, end of year (29,000,000)  
Equity derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 92,000,000 68,000,000
Proceeds received from settlement of derivatives (15,000,000) (4,000,000)
Payment on derivatives settled 0 0
Increase (decrease) in fair value of derivatives (22,000,000) 28,000,000
Derivative financial assets, end of year 55,000,000 92,000,000
Cash flow hedges | Debt derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 1,332,000,000 1,152,000,000
Proceeds received from settlement of derivatives 0 (1,761,000,000)
Payment on derivatives settled 0 1,436,000,000
Increase (decrease) in fair value of derivatives 80,000,000 505,000,000
Derivative financial assets, end of year 1,412,000,000 1,332,000,000
Cash flow hedges | Bond forwards    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial liabilities, beginning of year (87,000,000) (64,000,000)
Proceeds received from settlement of derivatives 0 0
Payment on derivatives settled 111,000,000 0
Increase (decrease) in fair value of derivatives (24,000,000) (23,000,000)
Derivative financial liabilities, end of year 0 (87,000,000)
Cash flow hedges | Expenditure derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 122,000,000  
Derivative financial liabilities, beginning of year   (39,000,000)
Proceeds received from settlement of derivatives (1,194,000,000) (1,089,000,000)
Payment on derivatives settled 1,124,000,000 1,093,000,000
Increase (decrease) in fair value of derivatives (51,000,000) 157,000,000
Derivative financial assets, end of year 1,000,000 122,000,000
Before Offset Amount    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 1,609,000,000  
Derivative financial liabilities, beginning of year (109,000,000)  
Derivative financial assets, end of year 1,579,000,000 1,609,000,000
Derivative financial liabilities, end of year (140,000,000) (109,000,000)
Before Offset Amount | Debt derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 41,000,000  
Derivative financial assets, end of year 0 41,000,000
Derivative financial liabilities, end of year (29,000,000)  
Before Offset Amount | Equity derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 92,000,000  
Derivative financial assets, end of year 55,000,000 92,000,000
Before Offset Amount | Cash flow hedges | Debt derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 1,354,000,000  
Derivative financial liabilities, beginning of year (22,000,000)  
Derivative financial assets, end of year 1,508,000,000 1,354,000,000
Derivative financial liabilities, end of year (96,000,000) (22,000,000)
Before Offset Amount | Cash flow hedges | Bond forwards    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial liabilities, beginning of year (87,000,000)  
Derivative financial liabilities, end of year 0 (87,000,000)
Before Offset Amount | Cash flow hedges | Expenditure derivatives    
Disclosure of detailed information about financial instruments [line items]    
Derivative financial assets, beginning of year 122,000,000  
Derivative financial assets, end of year 16,000,000 $ 122,000,000
Derivative financial liabilities, end of year $ (15,000,000)