v3.22.2.2
Joint ventures and associated companies - Summary of Carrying Value of Interests in Joint Ventures and Associated Companies Accounted Under the Equity Method (Detail) - CAD ($)
$ in Millions
12 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Disclosure Of Joint Ventures And Associates [Line Items]    
Net income $ 110 $ 130
Joint ventures [member]    
Disclosure Of Joint Ventures And Associates [Line Items]    
Carrying amount 248 223
Net income 103 107
Associated companies [member]    
Disclosure Of Joint Ventures And Associates [Line Items]    
Carrying amount 463 431
Net income $ 7 $ 23