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Interests in Structured Entities - Additional Information (Detail) - CAD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure of unconsolidated structured entities [Line Items]    
Investment in startup capital of mutual funds $ 1,361 $ 1,428
Retail mutual fund assets under management 290,863 238,068
Hancock Victoria Plantations Holdings PTY Limited [Member]    
Disclosure of unconsolidated structured entities [Line Items]    
Consolidated timber assets $ 979 $ 949