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Interests in Structured Entities - Interests and Maximum Exposure to Loss from Significant Unconsolidated Financing Structured Entities (Detail) - Unconsolidated structured entities - Financing SEs - CAD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure of unconsolidated structured entities [Line Items]    
Company's interests $ 710 $ 709
Manulife Finance (Delaware), L.P.    
Disclosure of unconsolidated structured entities [Line Items]    
Company's interests $ 710 $ 709