OVERVIEW, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015 Y M	Apr. 30, 2014	Oct. 31, 2014
Accounting Policies [Abstract]
Fair value of long term debt in excess of carrying value	$ 72		$ 72		$ 53
Goodwill and Purchased Intangible Assets
Purchased intangible assets useful life range minimum (in months)			6
Purchased intangible assets useful life range maximum (in years)			15
Impairment of goodwill	0	0	0	0
Impairment of intangible assets (IPR&D)	$ 0	$ 0	$ 0	$ 0