STOCKHOLDERS' EQUITY - Reclassifications out of accumulated comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives
Unrealized gain (loss) on derivatives	$ 0	$ 5
Unrealized gains and (losses) on derivatives reclassified to cost of products, before tax	0	5
Reclassification of (gains) and losses into earnings related to derivative instruments, tax	0	(1)
Unrealized gains and (losses) on derivatives reclassified to cost of products, net of tax	0	4
Actuarial net loss	(14)	(10)
Prior service benefit	2	2
Actuarial net loss and prior service benefit reclassified, before tax	(12)	(8)
Tax on actuarial net loss and prior service benefit reclassified	6	4
Actuarial net loss and prior service benefit reclassified, net of tax	(6)	(4)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (6)	$ 0