INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Jan. 31, 2015
Income Tax Disclosure
Effective Income Tax Rate, Percent	7.50%	11.70%	14.50%	11.60%
Provision for income taxes	$ 10	$ 15	$ 57	$ 39
Net Discrete Tax Expense (Benefit)	(6)	1	(9)	(15)
Income Taxes Paid			9
Prepaid Taxes					$ 3
Internal Revenue Service
Incremental taxes					$ 12
Internal Revenue Service (IRS)
Internal Revenue Service
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions				119
Tax liability on foreign earnings distributions				99
Deferred tax liability for unremitted foreign earnings [Member]
Income Tax Disclosure
Discrete Tax Expense (Benefit)	(11)
U.S. Research & Development Tax Credit Extension
Income Tax Disclosure
Discrete Tax Expense (Benefit)			(5)	(6)
Pension Curtailment
Income Tax Disclosure
Discrete Tax Expense (Benefit)			6
Return To Provision Adjustment
Income Tax Disclosure
Discrete Tax Expense (Benefit)			5
Interest Accruals for uncertain tax positions [Member]
Income Tax Disclosure
Discrete Tax Expense (Benefit)		1
Realization of tax credits [Member]
Income Tax Disclosure
Discrete Tax Expense (Benefit)			(8)
Other Discrete Items
Income Tax Disclosure
Discrete Tax Expense (Benefit)	5		4	$ 6
De-registration of certain foreign branches [Member]
Income Tax Disclosure
Discrete Tax Expense (Benefit)		$ (16)
share-based awards [Member]
Income Tax Disclosure
Provision for income taxes	$ (3)		$ (1)