STOCKHOLDERS' EQUITY - Changes in accumulated other comprehensive income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Beginning Balance	$ (391)	$ (334)
Other Comprehensive Income (Loss), before Reclassifications	(180)	(439)
Amounts Reclassified out of Accumulated Other Comprehensive Income	17	0
Tax (expense) benefit	51	50
Other Comprehensive Income (Loss)	(112)	(389)	$ (425)
Ending Balance	(503)	(391)	(334)
Unrealized Gain (Loss) on Investments [Abstract]
Beginning Balance	0	17
Other Comprehensive Income (Loss), before Reclassifications	0	0
Amounts Reclassified out of Other Comprehensive Income	0	0
Tax (expense) benefit	0	0
Other Comprehensive Income (Loss)	0	0
Ending Balance	0	0	17
Foreign Currency Translation [Abstract]
Beginning Balance	(189)	156
Other Comprehensive Income (Loss), before Reclassifications	(5)	(360)
Amounts Reclassified out of Other Comprehensive Income	0	0
Tax (expense) benefit	(3)	24	8
Other Comprehensive Income (Loss)	(8)	(336)
Ending Balance	(197)	(189)	156
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax [Abstract]
Beginning Balance	161	255
Other Comprehensive (Income) Loss, before Reclassifications	6	0
Amounts Reclassified out of Other Comprehensive Income	(29)	(17)
Tax (expense) benefit	8	6	16
Other Comprehensive (Income) Loss	(15)	(11)	(32)
Ending Balance	146	161	255
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax [Abstract]
Beginning Balance	(365)	(771)
Other Comprehensive Income (Loss), before Reclassifications	(171)	(90)
Amounts Reclassified out of Other Comprehensive Income	43	35
Tax (expense) benefit	42	17
Other Comprehensive Income (Loss)	(86)	(38)	(143)
Ending Balance	(451)	(365)	(771)
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax [Abstract]
Beginning Balance	2	9
Other Comprehensive Income (Loss), before Reclassifications	(10)	11
Amounts Reclassified out of Other Comprehensive Income	3	(18)
Tax (expense) benefit	4	3
Other Comprehensive Income (Loss)	(3)	(4)
Ending Balance	(1)	2	$ 9
Continuing Operations [Member]
Beginning Balance	(2)
Ending Balance		(2)
Unrealized Gain (Loss) on Investments [Abstract]
Beginning Balance	0
Ending Balance		0
Foreign Currency Translation [Abstract]
Beginning Balance	147
Ending Balance		147
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax [Abstract]
Beginning Balance	172
Ending Balance		172
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax [Abstract]
Beginning Balance	(327)
Ending Balance		(327)
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax [Abstract]
Beginning Balance	6
Ending Balance		6
Discontinued Operations [Member]
Beginning Balance	332
Ending Balance		332
Unrealized Gain (Loss) on Investments [Abstract]
Beginning Balance	(17)
Ending Balance		(17)
Foreign Currency Translation [Abstract]
Beginning Balance	(9)
Ending Balance		(9)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax [Abstract]
Beginning Balance	(83)
Ending Balance		(83)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax [Abstract]
Beginning Balance	444
Ending Balance		444
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax [Abstract]
Beginning Balance	$ (3)
Ending Balance		$ (3)