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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS- Components of net periodic costs (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2021
Jul. 31, 2020
Pension Plan | United States        
Defined Benefit Plan, Net Periodic Benefit Cost        
Service cost - benefits earned during the period $ 0 $ 0 $ 0 $ 0
Interest cost on benefit obligation 3 4 10 12
Expected return on plan assets (7) (7) (22) (22)
Amortization:        
Actuarial losses 1 0 3 2
Prior service credits 0 0 0 0
Total net plan costs (benefits) (3) (3) (9) (8)
Pension Plan | Foreign Plan        
Defined Benefit Plan, Net Periodic Benefit Cost        
Service cost - benefits earned during the period 7 6 18 18
Interest cost on benefit obligation 2 2 6 6
Expected return on plan assets (12) (11) (37) (35)
Amortization:        
Actuarial losses 13 12 40 36
Prior service credits 0 0 0 0
Total net plan costs (benefits) 10 9 27 25
Other Postretirement Benefits Plan | United States        
Defined Benefit Plan, Net Periodic Benefit Cost        
Service cost - benefits earned during the period 1 1 1 1
Interest cost on benefit obligation 0 0 2 2
Expected return on plan assets (2) (2) (5) (5)
Amortization:        
Actuarial losses 1 1 3 3
Prior service credits 0 (1) (1) (5)
Total net plan costs (benefits) $ 0 $ (1) $ 0 $ (4)