RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Details) (Employer Contributions)) - Pension Plan - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
United States
Defined Benefit Plan Disclosure
Employer Contributions	$ 0	$ 0	$ 0	$ 0
Expected future employer contributions	0		0
Foreign Plan
Defined Benefit Plan Disclosure
Employer Contributions	4	$ 14	9	$ 19
Expected future employer contributions	$ 13		$ 13