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Retirement and Post-Retirement Benefit Plans - Schedule of Pension and Post-Retirement Benefit (Credit) Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2023
Apr. 30, 2022
Post-Retirement Benefit Plans        
Retirement and post-retirement benefit plans        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 3 2 7 4
Expected return on plan assets (3) (2) (6) (4)
Amortization and deferrals:        
Actuarial loss (gain) (4) (4) (8) (8)
Prior service cost (credit) (3) (3) (6) (6)
Net periodic benefit (credit) cost (7) (7) (13) (14)
Settlement loss 0 0    
Special termination benefit cost 34 0 34 0
Total periodic benefit (credit) cost 27 (7) 21 (14)
U.S. | Defined Benefit Plans        
Retirement and post-retirement benefit plans        
Service cost 0 0 0 0
Interest cost 55 40 109 80
Expected return on plan assets (64) (75) (129) (149)
Amortization and deferrals:        
Actuarial loss (gain) 4 2 9 3
Prior service cost (credit) 0 0 0 0
Net periodic benefit (credit) cost (5) (33) (11) (66)
Settlement loss 0 0    
Special termination benefit cost 105 0 105 0
Total periodic benefit (credit) cost 100 (33) 94 (66)
Non-U.S. | Defined Benefit Plans        
Retirement and post-retirement benefit plans        
Service cost 11 14 20 28
Interest cost 10 5 20 11
Expected return on plan assets (13) (12) (26) (25)
Amortization and deferrals:        
Actuarial loss (gain) 1 9 2 19
Prior service cost (credit) 2 1 3 3
Net periodic benefit (credit) cost 11 17 19 36
Settlement loss (1) 0    
Special termination benefit cost 0 0 0 0
Total periodic benefit (credit) cost $ 10 $ 17 $ 19 $ 36