STOCKHOLDER'S EQUITY - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Beginning Balance	$ (346)
Other comprehensive income (loss), before reclassifications	68
Amounts reclassified out of accumulated other comprehensive income (loss)	7
Tax (expense) benefit	2
Other comprehensive income (loss)	77	$ 14
Ending Balance	(269)
Foreign currency translation
Beginning balance	(156)
Other comprehensive income (loss) before reclassifications	79
Amounts reclassified out of accumulated other comprehensive income (loss)	0
Tax (expense) benefit	0	1
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	79	(3)
Ending balance	(77)
Prior service credits
Beginning balance	140
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified out of accumulated other comprehensive income (loss)	(2)	(2)
Tax (expense) benefit	1
Other comprehensive income (loss)	(1)	(1)
Ending balance	139
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss), Net Actuarial Gain (Loss), before Tax
Beginning balance	(328)
Other comprehensive income (loss) before reclassifications	(1)
Amounts reclassified out of accumulated other comprehensive income (loss)	9	22
Tax (expense) benefit	(2)
Other comprehensive income (loss)	6	$ 17
Ending balance	(322)
Unrealized gains (losses) on derivatives
Beginning balance	(2)
Other comprehensive income (loss) before reclassifications	(10)
Amounts reclassified out of accumulated other comprehensive income (loss)	0
Tax (expense) benefit	3
Other comprehensive income (loss)	(7)
Ending balance	$ (9)