PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 7) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Actual pension asset returns
Extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions, low end of range	10 years
Extended period of time used to determine if fundamental changes in capital markets affect plan asset return assumptions, high end of range	20 years
Average annual return of company's U.S. pension fund over past 10 years (as a percent)	8.00%
Average annual return of company's U.S. pension fund over past 20 years (as a percent)	9.00%
Defined contribution plans related to employee investment and savings primarily in the U.S.
Defined contribution plans employer contributions and costs (primarily in the U.S.)	$ 185	$ 184	$ 178
Pensions
Actual pension asset returns
Market related value period	5 years
Pensions | Real Estate
Target asset allocations, pension and health care plan assets
Target allocation percentage	5.00%
Pensions | Equity Securities
Target asset allocations, pension and health care plan assets
Target allocation percentage	49.00%
Pensions | Debt Securities
Target asset allocations, pension and health care plan assets
Target allocation percentage	24.00%
Pensions | Other Investments
Target asset allocations, pension and health care plan assets
Target allocation percentage	22.00%
Health Care and Life Insurance | Real Estate
Target asset allocations, pension and health care plan assets
Target allocation percentage	4.00%
Health Care and Life Insurance | Equity Securities
Target asset allocations, pension and health care plan assets
Target allocation percentage	53.00%
Health Care and Life Insurance | Debt Securities
Target asset allocations, pension and health care plan assets
Target allocation percentage	28.00%
Health Care and Life Insurance | Other Investments
Target asset allocations, pension and health care plan assets
Target allocation percentage	15.00%