v3.25.4
Derivative and Hedging Instruments - Gross Notional Amount and Fair Value of Derivative Instruments (Details) - CAD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about hedging instruments [line items]    
Notional amount $ 513,010 $ 499,021
Fair value, assets 9,628 8,667
Fair value, liabilities 14,347 14,247
Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 10,367 10,954
Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 3,952 3,230
Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 28 63
Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, assets 5,403 5,193
Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, assets 3,218 2,742
Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 29,756 29,732
Fair value, assets 1,006 732
Fair value, liabilities 28 57
Qualifying hedge accounting relationships    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 250,346 256,606
Fair value, assets 2,928 3,001
Fair value, liabilities 9,200 9,331
Derivatives not designated in qualifying hedge accounting relationships    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 262,664 242,415
Fair value, assets 6,700 5,666
Fair value, liabilities 5,147 4,916
Derivatives not designated in qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 3,050 2,906
Derivatives not designated in qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 558 272
Derivatives not designated in qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 1,511 1,675
Derivatives not designated in qualifying hedge accounting relationships | Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 28 63
Derivatives not designated in qualifying hedge accounting relationships | Interest rate futures    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Derivatives not designated in qualifying hedge accounting relationships | Interest rate options    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Derivatives not designated in qualifying hedge accounting relationships | Currency rate futures    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Derivatives not designated in qualifying hedge accounting relationships | Credit default swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Derivatives not designated in qualifying hedge accounting relationships | Equity futures    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Derivatives not designated in qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 112,633 110,114
Fair value, assets 2,403 2,188
Derivatives not designated in qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 36,417 33,924
Fair value, assets 2,434 1,854
Derivatives not designated in qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 55,555 52,044
Fair value, assets 848 882
Derivatives not designated in qualifying hedge accounting relationships | Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 23,995 25,290
Fair value, assets 1,006 724
Derivatives not designated in qualifying hedge accounting relationships | Interest rate futures    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 21,483 9,054
Fair value, assets 0 0
Derivatives not designated in qualifying hedge accounting relationships | Interest rate options    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 4,876 5,633
Fair value, assets 8 16
Derivatives not designated in qualifying hedge accounting relationships | Currency rate futures    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 2,242 2,238
Fair value, assets 0 0
Derivatives not designated in qualifying hedge accounting relationships | Credit default swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 109 114
Fair value, assets 1 2
Derivatives not designated in qualifying hedge accounting relationships | Equity futures    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 5,354 4,004
Fair value, assets 0 0
Fair value hedges | Qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 3,826 3,533
Fair value hedges | Qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 2,385 2,114
Fair value hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 2,730 3,420
Fair value hedges | Qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 196,158 206,181
Fair value, assets 2,793 2,734
Fair value hedges | Qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 16,383 14,121
Fair value, assets 71 145
Fair value hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 25,324 25,692
Fair value, assets 30 74
Cash flow hedges | Qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 63 48
Cash flow hedges | Qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 190 216
Cash flow hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Cash flow hedges | Qualifying hedge accounting relationships | Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 0 0
Cash flow hedges | Qualifying hedge accounting relationships | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 10,946 9,036
Fair value, assets 31 24
Cash flow hedges | Qualifying hedge accounting relationships | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 650 650
Fair value, assets 0 0
Cash flow hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 0 0
Fair value, assets 0 0
Cash flow hedges | Qualifying hedge accounting relationships | Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 298 324
Fair value, assets 0 6
Net investment hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Fair value, liabilities 6 0
Net investment hedges | Qualifying hedge accounting relationships | Forward contracts    
Disclosure of detailed information about hedging instruments [line items]    
Notional amount 587 602
Fair value, assets $ 3 $ 18