STATEMENT OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Statement of Comprehensive Income [Abstract]
Net income	$ 724	$ 1,153	$ 1,012
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in unrealized gain on investments, net of tax expense (benefit) of $2, $(8) and $0	7	6	(4)
Gain on derivative instruments, net of tax expense of $2, $3 and $0	8	7	0
Amounts reclassified into earnings related to derivative instruments, net of tax benefiti of $(3), $(2) and $(2)	(10)	(6)	3
Foreign currency translation	1	(28)	94
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax [Abstract]
Change in actuarial net loss, net of tax expense (benefit) of $114, $(61) and $(3)	228	(175)	(38)
Change in net prior service benefit, net of tax benefit of $(16), $(17) and $0	(32)	(31)	149
Other Comprehensive Income (Loss), Net of Tax	202	(227)	204
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 926	$ 926	$ 1,216