XML 209 R146.htm IDEA: XBRL DOCUMENT v3.25.3
Designated Accounting Hedges - Summary of Hedge Accounting Impact on the Consolidated Statement of Comprehensive Income (Detail) - CAD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Amount reclassified from accumulated OCI to income (before-tax) $ 0 $ 0
Tax benefit (expense) (189) (590)
Cash flow hedges [member]    
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Beginning balance of AOCI -hedge reserve (after-tax) 509 (1,026)
Change in the value of the hedging instrument recognized in OCI (before-tax) 1,965 3,252
Amount reclassified from accumulated OCI to income (before-tax) (1,285) (1,127)
Tax benefit (expense) (189) (590)
Ending balance of AOCI - hedge reserve (after-tax) 1,000 509
Hedge ineffectiveness gains (losses) recognized in income 2 6
Cash flow hedges [member] | Foreign Exchange Risks [member]    
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Beginning balance of AOCI -hedge reserve (after-tax) (20) (27)
Change in the value of the hedging instrument recognized in OCI (before-tax) 687 710
Amount reclassified from accumulated OCI to income (before-tax) (672) (701)
Tax benefit (expense) (4) (2)
Ending balance of AOCI - hedge reserve (after-tax) (9) (20)
Hedge ineffectiveness gains (losses) recognized in income (1) 3
Cash flow hedges [member] | Interest rate risk [member]    
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Beginning balance of AOCI -hedge reserve (after-tax) 396 (970)
Change in the value of the hedging instrument recognized in OCI (before-tax) 565 1,622
Amount reclassified from accumulated OCI to income (before-tax) 79 270
Tax benefit (expense) (179) (526)
Ending balance of AOCI - hedge reserve (after-tax) 861 396
Hedge ineffectiveness gains (losses) recognized in income 3 3
Cash flow hedges [member] | Equity share price risk [member]    
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Beginning balance of AOCI -hedge reserve (after-tax) 133 (29)
Change in the value of the hedging instrument recognized in OCI (before-tax) 713 920
Amount reclassified from accumulated OCI to income (before-tax) (692) (696)
Tax benefit (expense) (6) (62)
Ending balance of AOCI - hedge reserve (after-tax) 148 133
NIFO hedges [member] | Foreign Exchange Risks [member]    
Disclosure of information about hedge accounting impact on statement of comprehensive income [line items]    
Beginning balance of AOCI -hedge reserve (after-tax) (3,215) (2,948)
Change in the value of the hedging instrument recognized in OCI (before-tax) (297) (267)
Tax benefit (expense) (68)  
Ending balance of AOCI - hedge reserve (after-tax) $ (3,580) $ (3,215)