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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Net Pension and post-retirement benefit cost(benefit) components) (Details) - USD ($)
$ in Millions
 3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Defined benefit plan | United States    
Defined Benefit Plan Disclosure    
Service cost—benefits earned during the period $ 6 $ 5
Interest cost on benefit obligation 6 7
Expected return on plan assets (11) (11)
Net actuarial loss 4 3
Prior service credit 0 (1)
Settlement loss 0 0
Net periodic benefit cost (benefit) 5 3
Defined benefit plan | Non-US    
Defined Benefit Plan Disclosure    
Service cost—benefits earned during the period 4 3
Interest cost on benefit obligation 4 6
Expected return on plan assets (21) (19)
Net actuarial loss 8 7
Prior service credit 0 0
Settlement loss 0 2
Net periodic benefit cost (benefit) (5) (1)
Post-retirement Benefits Plan | United States    
Defined Benefit Plan Disclosure    
Service cost—benefits earned during the period 0 0
Interest cost on benefit obligation 1 2
Expected return on plan assets (3) (3)
Net actuarial loss 3 2
Prior service credit (3) (3)
Settlement loss 0 0
Net periodic benefit cost (benefit) $ (2) $ (2)