XML 128 R99.htm IDEA: XBRL DOCUMENT v3.22.4
Insurance Contract Liabilities and Reinsurance Assets - Summary of Change in Insurance Contract Liabilities (Parenthetical) (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of changes in liabilities under insurance contracts and reinsurance contracts issued [abstract]    
Change in gross insurance contract liabilities $ 34,719 $ 11,125
Change in insurance contract liabilities (34,971) 10,719
Increase in insurance contract liabilities 35,830 9,868
Contract liabilities in gross claims and benefits $ 1,111 $ 1,257