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OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	May 31, 2018	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2017	Oct. 31, 2017
Variable Interest Entity Disclosures
Ownership percentage in Lasergen VIE		48.00%
Call option amount to acquire remaining shares of business		$ 105
Carrying value of investments in VIE's		80
Maximum exposure of investments in VIE's		80
Fair Value of Financial Instruments
Fair value of senior notes in excess of carrying value					$ 58
Fair value of senior notes lower than carrying value		$ 4
Services and other revenue [Member]
Revisions [Abstract]
Prior period revision amount from products to service adjustment			$ 3	$ 6
Services and other cost of sales [Member]
Revisions [Abstract]
Prior period revision amount from products to service adjustment			$ 2	$ 4
Subsequent Event [Member] \| Advanced Analytical Technologies, Inc (AATI) [Member]
Acquisition
Purchase Price	$ 250