v3.25.3
Retirement and Post-Retirement Benefit Plans - Schedule of Funded Status of Defined Benefit and Post-Retirement Benefit Plans (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2023
Post-Retirement Benefit Plans      
Change in fair value of plan assets:      
Fair value of assets — beginning of year $ 317 $ 382  
Actual return on plan assets 15 33  
Employer contributions 5 4  
Participant contributions 25 28  
Benefits paid (48) (48)  
Settlement 0 0  
Transfers 0 (82)  
Currency impact 0 0  
Fair value of assets — end of year 314 317 $ 382
Change in benefits obligation      
Projected benefit obligation — beginning of year 287 299  
Service cost 1 1 1
Interest cost 14 15 15
Participant contributions 25 28  
Actuarial loss (gain) (12) (8)  
Benefits paid (48) (48)  
Settlement 0 0  
Currency impact 0 0  
Projected benefit obligation — end of year 267 287 299
Funded status at end of year 47 30  
United States | Defined Benefit Plans      
Change in fair value of plan assets:      
Fair value of assets — beginning of year 4,218 3,853  
Actual return on plan assets 314 598  
Employer contributions 26 26  
Participant contributions 0 0  
Benefits paid (250) (258)  
Settlement (2) (1)  
Transfers 0 0  
Currency impact 0 0  
Fair value of assets — end of year 4,306 4,218 3,853
Change in benefits obligation      
Projected benefit obligation — beginning of year 4,218 3,854  
Service cost 0 0 0
Interest cost 214 228 217
Participant contributions 0 0  
Actuarial loss (gain) 83 395  
Benefits paid (250) (258)  
Settlement (2) (1)  
Currency impact 0 0  
Projected benefit obligation — end of year 4,263 4,218 3,854
Funded status at end of year 43 0  
Accumulated benefit obligation 4,263 4,217  
Non-U.S. | Defined Benefit Plans      
Change in fair value of plan assets:      
Fair value of assets — beginning of year 1,085 959  
Actual return on plan assets 67 111  
Employer contributions 43 53  
Participant contributions 15 17  
Benefits paid (38) (54)  
Settlement (35) (28)  
Transfers 0 0  
Currency impact 67 27  
Fair value of assets — end of year 1,204 1,085 959
Change in benefits obligation      
Projected benefit obligation — beginning of year 1,345 1,185  
Service cost 39 37 39
Interest cost 43 46 41
Participant contributions 15 17  
Actuarial loss (gain) (16) 116  
Benefits paid (38) (54)  
Settlement (35) (28)  
Currency impact 79 26  
Projected benefit obligation — end of year 1,432 1,345 $ 1,185
Funded status at end of year (228) (260)  
Accumulated benefit obligation $ 1,325 $ 1,248