XML 204 R168.htm IDEA: XBRL DOCUMENT v3.22.4
Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of accumulated other comprehensive income loss [line items]    
Beginning balance $ 684 $ 775
Other Comprehensive Income (Loss), Before Tax 811 (82)
Income Tax (Expense) Recovery (25) (9)
Ending balance 1,470 684
Pension and Other Post-Retirement Benefits    
Disclosure of accumulated other comprehensive income loss [line items]    
Beginning balance 28 (10)
Other Comprehensive Income (Loss), Before Tax 96 47
Income Tax (Expense) Recovery (25) (9)
Ending balance 99 28
Private Equity Instruments    
Disclosure of accumulated other comprehensive income loss [line items]    
Beginning balance 27 27
Other Comprehensive Income (Loss), Before Tax 2 0
Income Tax (Expense) Recovery 0 0
Ending balance 29 27
Foreign Currency Translation Adjustment    
Disclosure of accumulated other comprehensive income loss [line items]    
Beginning balance 629 758
Other Comprehensive Income (Loss), Before Tax 713 (129)
Income Tax (Expense) Recovery 0 0
Ending balance $ 1,342 $ 629