XML 89 R79.htm IDEA: XBRL DOCUMENT v3.23.2
financial instruments - Derivative gains and losses (Details) - CAD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Currency risk          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) $ (166) $ 182 $ (181) $ 188  
Gain (loss) reclassified from other comprehensive income to income (effective portion) 137 174 134 67  
Derivative assets          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) (165) 183 (181) 189  
Gain (loss) reclassified from other comprehensive income to income (effective portion) (137) 174 (134) 66  
Derivative assets | Currency risk          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) (166) 182 (181) 188  
Gain (loss) reclassified from other comprehensive income to income (effective portion) (137) 174 (134) 67  
Derivatives held for hedging | Currency risk related to purchases | U.S. Dollars | Goods and services purchased          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) 10 14 (9) 8  
Gain (loss) reclassified from other comprehensive income to income (effective portion) 6 4 15 5  
Derivatives held for hedging | Currency risk related to long-term debt | U.S. Dollars | Financing costs          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) (176) 138 (151) 126  
Gain (loss) reclassified from other comprehensive income to income (effective portion) (138) 171 (138) 63  
Spread included in fair value of derivative instruments 10 32 (8) 7  
Derivatives held for hedging | Currency risk related to investment in a foreign operation | Financing costs          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion)   30 (21) 54  
Gain (loss) reclassified from other comprehensive income to income (effective portion) (5) (1) (11) (1)  
Derivatives held for hedging | Currency risk related to investment in a foreign operation | U.S. Dollars | Financing costs          
Disclosure of detailed information about financial instruments          
Spread included in fair value of derivative instruments 1 2 2  
Derivatives held for hedging | Other market risk | Financing costs          
Disclosure of detailed information about financial instruments          
Amount of gain (loss) recognized in other comprehensive income (effective portion) 1 1   1  
Gain (loss) reclassified from other comprehensive income to income (effective portion)       (1)  
Derivatives held for trading | Currency risk | Financing costs          
Disclosure of detailed information about financial instruments          
Gain recognized in income on derivatives 2 (8) 5 (11)  
Virtual power purchase agreements unrealized change in forward element | Financing costs          
Disclosure of detailed information about financial instruments          
Gain recognized in income on derivatives (7) 80 (26) 80  
Cash flow hedging item (HFH) | Derivative assets | Currency risk related to long-term debt | U.S. Dollars          
Disclosure of detailed information about financial instruments          
Spread included in fair value of derivative instruments     115   $ 123
Cash flow hedging item (HFH) | Derivative assets | Currency risk related to long-term debt | European euro          
Disclosure of detailed information about financial instruments          
Spread included in fair value of derivative instruments     3   $ 1
Cash flow hedging item (HFH) | Derivatives held for hedging          
Disclosure of detailed information about financial instruments          
Ineffective portion of derivative instruments classified as cash flow hedging items $ 0 $ 0 $ 0 $ 0