v3.25.4
Insurance and Reinsurance contract Assets and Liabilities - Reinsurance Contracts Held in Analysis by Measurement Components (Detail) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance $ 59,015  
Opening reinsurance contract held liabilities, beginning balance (2,669)  
Effects of changes in non-performance risk of reinsurers (12) $ 57
Closing reinsurance contract held assets, ending balance 60,881 59,015
Reinsurance contracts held that are liabilities (3,273) (2,669)
Reinsurance contracts held    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 59,015 42,651
Opening reinsurance contract held liabilities, beginning balance (2,669) (2,831)
Net opening balance, beginning balance 56,346 39,820
Contracts initially recognized during the year 48 57
Effects of changes in non-performance risk of reinsurers 12 (58)
Effects of movements in foreign exchange rates 2,993 (4,632)
Total changes in income and OCI 1,497 (1,969)
Total cash flows 2,759 14,557
Net closing balance, ending balance 57,608 56,346
Closing reinsurance contract held assets, ending balance 60,881 59,015
Reinsurance contracts held that are liabilities (3,273) (2,669)
Reinsurance contracts held | PAA Estimates of PV of future cash flows    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Contracts initially recognized during the year 8,322 18,990
Reinsurance contracts held | PAA Risk adjustment for non-financial risk    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Contracts initially recognized during the year 825 1,261
Analysis by measurement components | Reinsurance contracts held    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 58,725 42,355
Opening reinsurance contract held liabilities, beginning balance (2,642) (2,790)
Opening PAA reinsurance contract net assets, beginning balance 263 255
Net opening balance, beginning balance 56,346 39,820
CSM recognized for services received (424) (321)
Change in risk adjustment for non-financial risk for risk expired (515) (536)
Experience adjustments (497) (265)
Changes that relate to current services (1,436) (1,122)
Contracts initially recognized during the year 48 57
Changes in recoveries of losses on onerous underlying contracts that adjust the CSM (28) 142
Changes in estimates that adjust the CSM 0 0
Changes in estimates that relate to losses and reversal of losses on onerous contracts 166 172
Changes that relate to future services 186 371
Adjustments to liabilities for incurred claims 31 11
Changes that relate to past services 31 11
Insurance service result (1,219) (740)
Insurance finance (income) expenses from reinsurance contracts 2,751 (1,842)
Effects of changes in non-performance risk of reinsurers 11 (58)
Effects of movements in foreign exchange rates (2,992) 4,630
Total changes in income and OCI (1,449) 1,990
Total cash flows 2,732 14,528
Change in PAA balance (21) 8
Net closing balance, ending balance 57,608 56,346
Closing reinsurance contract held assets, ending balance 60,606 58,725
Reinsurance contracts held that are liabilities (3,240) (2,642)
Opening PAA reinsurance contract net assets, ending balance 242 263
Analysis by measurement components | Reinsurance contracts held | PAA Estimates of PV of future cash flows    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 50,275 38,156
Opening reinsurance contract held liabilities, beginning balance (3,308) (4,384)
Opening PAA reinsurance contract net assets, beginning balance 249 239
Net opening balance, beginning balance 47,216 34,011
CSM recognized for services received 0 0
Change in risk adjustment for non-financial risk for risk expired 0 0
Experience adjustments (497) (265)
Changes that relate to current services (497) (265)
Contracts initially recognized during the year (1,080) (1,826)
Changes in recoveries of losses on onerous underlying contracts that adjust the CSM 0 0
Changes in estimates that adjust the CSM (253) (1,577)
Changes in estimates that relate to losses and reversal of losses on onerous contracts 166 171
Changes that relate to future services (1,167) (3,232)
Adjustments to liabilities for incurred claims 31 11
Changes that relate to past services 31 11
Insurance service result (1,633) (3,486)
Insurance finance (income) expenses from reinsurance contracts 2,176 (1,858)
Effects of changes in non-performance risk of reinsurers 11 (58)
Effects of movements in foreign exchange rates (2,630) 4,069
Total changes in income and OCI (2,076) (1,333)
Total cash flows 2,732 14,528
Change in PAA balance (21) 10
Net closing balance, ending balance 47,851 47,216
Closing reinsurance contract held assets, ending balance 51,618 50,275
Reinsurance contracts held that are liabilities (3,995) (3,308)
Opening PAA reinsurance contract net assets, ending balance 228 249
Analysis by measurement components | Reinsurance contracts held | PAA Risk adjustment for non-financial risk    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 5,442 3,685
Opening reinsurance contract held liabilities, beginning balance 333 1,305
Opening PAA reinsurance contract net assets, beginning balance 14 16
Net opening balance, beginning balance 5,789 5,006
CSM recognized for services received 0 0
Change in risk adjustment for non-financial risk for risk expired (515) (536)
Experience adjustments 0 0
Changes that relate to current services (515) (536)
Contracts initially recognized during the year 825 1,261
Changes in recoveries of losses on onerous underlying contracts that adjust the CSM 0 0
Changes in estimates that adjust the CSM (26) (290)
Changes in estimates that relate to losses and reversal of losses on onerous contracts 0 1
Changes that relate to future services 799 972
Adjustments to liabilities for incurred claims 0 0
Changes that relate to past services 0 0
Insurance service result 284 436
Insurance finance (income) expenses from reinsurance contracts 447 (62)
Effects of changes in non-performance risk of reinsurers 0 0
Effects of movements in foreign exchange rates (257) 411
Total changes in income and OCI 474 785
Total cash flows 0 0
Change in PAA balance 0 (2)
Net closing balance, ending balance 6,263 5,789
Closing reinsurance contract held assets, ending balance 5,902 5,442
Reinsurance contracts held that are liabilities 347 333
Opening PAA reinsurance contract net assets, ending balance 14 14
Analysis by measurement components | Reinsurance contracts held | CSM, Fair value    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 2,619 565
Opening reinsurance contract held liabilities, beginning balance (112) 116
Opening PAA reinsurance contract net assets, beginning balance 0 0
Net opening balance, beginning balance 2,507 681
CSM recognized for services received (216) (62)
Change in risk adjustment for non-financial risk for risk expired 0 0
Experience adjustments 0 0
Changes that relate to current services (216) (62)
Contracts initially recognized during the year (2) 2
Changes in recoveries of losses on onerous underlying contracts that adjust the CSM (9) 110
Changes in estimates that adjust the CSM (201) 1,657
Changes in estimates that relate to losses and reversal of losses on onerous contracts 0 0
Changes that relate to future services (212) 1,769
Adjustments to liabilities for incurred claims 0 0
Changes that relate to past services 0 0
Insurance service result (428) 1,707
Insurance finance (income) expenses from reinsurance contracts 69 16
Effects of changes in non-performance risk of reinsurers 0 0
Effects of movements in foreign exchange rates (85) 103
Total changes in income and OCI (444) 1,826
Total cash flows 0 0
Change in PAA balance 0 0
Net closing balance, ending balance 2,063 2,507
Closing reinsurance contract held assets, ending balance 2,223 2,619
Reinsurance contracts held that are liabilities (160) (112)
Opening PAA reinsurance contract net assets, ending balance 0 0
Analysis by measurement components | Reinsurance contracts held | CSM, Other    
Changes in insurance contracts for reconciliation by remaining coverage and incurred claims [abstract]    
Opening reinsurance contract held assets, beginning balance 389 (51)
Opening reinsurance contract held liabilities, beginning balance 445 173
Opening PAA reinsurance contract net assets, beginning balance 0 0
Net opening balance, beginning balance 834 122
CSM recognized for services received (208) (259)
Change in risk adjustment for non-financial risk for risk expired 0 0
Experience adjustments 0 0
Changes that relate to current services (208) (259)
Contracts initially recognized during the year 305 620
Changes in recoveries of losses on onerous underlying contracts that adjust the CSM (19) 32
Changes in estimates that adjust the CSM 480 210
Changes in estimates that relate to losses and reversal of losses on onerous contracts 0 0
Changes that relate to future services 766 862
Adjustments to liabilities for incurred claims 0 0
Changes that relate to past services 0 0
Insurance service result 558 603
Insurance finance (income) expenses from reinsurance contracts 59 62
Effects of changes in non-performance risk of reinsurers 0 0
Effects of movements in foreign exchange rates (20) 47
Total changes in income and OCI 597 712
Total cash flows 0 0
Change in PAA balance 0 0
Net closing balance, ending balance 1,431 834
Closing reinsurance contract held assets, ending balance 863 389
Reinsurance contracts held that are liabilities 568 445
Opening PAA reinsurance contract net assets, ending balance $ 0 $ 0