RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Switzerland defined benefit plan settlement) (Details) - Defined benefit plan - Non-US - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Jan. 01, 2019	Jan. 31, 2019	Jul. 31, 2019	Jul. 31, 2018
Defined Benefit Plan Disclosure
Settlement loss			$ 2	$ 0
Switzerland Defined Benefit Plan
Defined Benefit Plan Disclosure
Date of transfer of defined benefit plan assets	Jan. 01, 2019
Settlement loss		$ 2