Retirement and Post-Retirement Benefit Plans (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
U.S. Defined Benefit Plans
Net benefit cost (credit)
Service cost	$ 1	$ 1	$ 1
Interest cost	560	566	594
Expected return on plan assets	(845)	(793)	(744)
Amortization and deferrals:
Actuarial loss (gain)	77	43	33
Net periodic benefit (credit) cost	(207)	(183)	(116)
Settlement loss (gain)	12	11	3
Special termination benefits		833
Net benefit (credit) cost	(195)	661	(113)
Non-U.S. Defined Benefit Plans
Net benefit cost (credit)
Service cost	337	294	343
Interest cost	676	690	694
Expected return on plan assets	(1,007)	(816)	(890)
Amortization and deferrals:
Actuarial loss (gain)	341	235	235
Prior service benefit	(27)	(24)	(14)
Net periodic benefit (credit) cost	320	379	368
Curtailment (gain) loss	(3)	4
Settlement loss (gain)	18	(18)	9
Special termination benefits	31	17	16
Net benefit (credit) cost	366	382	393
Post-Retirement Benefit Plans
Net benefit cost (credit)
Service cost	6	7	9
Interest cost	31	35	35
Expected return on plan assets	(34)	(38)	(37)
Amortization and deferrals:
Actuarial loss (gain)	2	(3)	3
Prior service benefit	(67)	(79)	(83)
Net periodic benefit (credit) cost	(62)	(78)	(73)
Curtailment (gain) loss	(7)	(30)
Special termination benefits	(5)	227
Net benefit (credit) cost	$ (74)	$ 119	$ (73)