SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014	Oct. 31, 2014
Share-based Compensation [Abstract]
Windfall tax benefit realized	$ 0	$ 0	$ 0	$ 3
Share-based compensation capitalized within inventory	0		0		0
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	12	22	34	59
Cost of Products and Services
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	2	3	7	9
Research and Development Expense
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	1	1	3	5
Selling, General and Administrative Expenses
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	9	9	24	23
Continuing Operations
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	12	13	34	37
Discontinued Operations
Share-based Compensation, Allocation and Classification in Financial Statements
Share-based compensation expense	$ 0	$ 9	$ 0	$ 22