NEW ACCOUNTING PRONOUNCEMENTS NEW ACCOUNTING PRONOUNCEMENTS - Textuals (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jul. 31, 2016	Jan. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Apr. 30, 2016	Oct. 31, 2015
Provision for income taxes	$ 10		$ 15	$ 57	$ 39
Other assets	459			459			$ 292
Additional paid-in-capital	9,144			9,144			9,045
Other accrued liabilities	167			167			218
Other long-term liabilities	356			356			$ 414
Net cash provided by operating activities				559	271
Net cash used in financing activities				(212)	$ (1,056)
Adjustments for New Accounting Principle, Early Adoption [Member]
Provision for income taxes		$ 2
Other assets						$ 97
Additional paid-in-capital						4
Other accrued liabilities						(1)
Other long-term liabilities						$ (99)
Net cash provided by operating activities	1			6
Net cash used in financing activities	$ (1)			$ (6)