XML 56 R44.htm IDEA: XBRL DOCUMENT v3.24.3
Financial instruments (Details) - CAD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jan. 12, 2024
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Schedule of Investments [Line Items]            
Debt and finance lease liabilities, carrying value   $ 21,536   $ 21,536   $ 21,437
Debt and finance lease liabilities, fair value   20,647   20,647   20,550
Payments for settlement of foreign currency forward contracts   0 $ 0 65 $ 0  
Foreign Exchange Contract            
Schedule of Investments [Line Items]            
Loss on derivative       4    
Foreign currency contracts, fair value           $ 60
Payments for settlement of foreign currency forward contracts $ 65          
Net Investment Hedge            
Schedule of Investments [Line Items]            
Unrealized gain (loss) on net investment hedge   $ 56 $ (163) $ (88) $ (1)