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