Retirement and Post-Retirement Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011	Oct. 31, 2011
Amortization and deferrals:
Net gain recognized due to transfer of substitutional portion of entity's Japan pension to Japanese government			$ 28,000,000
Settlement loss related to transfer of substitutional portion of entity's Japan pension to Japanese government			150,000,000
Government subsidy related to transfer of substitutional portion of entity's Japan pension to Japanese government	178,000,000		178,000,000
Elimination of pension obligations included in government subsidy	344,000,000		344,000,000
Transfer of pension assets included in government subsidy	166,000,000		166,000,000
2012 EER
Amortization and deferrals:
Curtailment gain	4,000,000		4,000,000
Special termination benefits	833,000,000		833,000,000
Future Contributions and Funding Policy
Maximum period for continuing health care coverage at active employee contribution rates for participating employees in restructuring plan			24
Combined age and service required for each employee participating in the restructuring plan			65
Number of employees who participated	8,500
Pension Plans
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2012					597,000,000
Contributions to benefit plans			475,000,000
Expected contribution to benefit plans as of balance sheet date	130,000,000		130,000,000
U.S. Defined Benefit Plans
Net benefit (gain) cost
Service cost			1,000,000	1,000,000
Interest cost	141,000,000	148,000,000	424,000,000	445,000,000
Expected return on plan assets	(198,000,000)	(186,000,000)	(594,000,000)	(558,000,000)
Amortization and deferrals:
Actuarial loss (benefit)	11,000,000	9,000,000	32,000,000	25,000,000
Net periodic benefit (gain) cost	(46,000,000)	(29,000,000)	(137,000,000)	(87,000,000)
Settlement loss (gain)	5,000,000		5,000,000
Special termination benefits	833,000,000		833,000,000
Net benefit (gain) cost	792,000,000	(29,000,000)	701,000,000	(87,000,000)
U.S. Defined Benefit Plans | 2012 EER | Minimum
Future Contributions and Funding Policy
Period for calculation of lump sum payment			5
U.S. Defined Benefit Plans | 2012 EER | Maximum
Future Contributions and Funding Policy
Period for calculation of lump sum payment			14
Non-U.S. Defined Benefit Plans
Net benefit (gain) cost
Service cost	72,000,000	90,000,000	219,000,000	264,000,000
Interest cost	170,000,000	178,000,000	519,000,000	524,000,000
Expected return on plan assets	(201,000,000)	(227,000,000)	(614,000,000)	(665,000,000)
Amortization and deferrals:
Actuarial loss (benefit)	57,000,000	57,000,000	177,000,000	180,000,000
Prior service benefit	(6,000,000)	(3,000,000)	(18,000,000)	(10,000,000)
Net periodic benefit (gain) cost	92,000,000	95,000,000	283,000,000	293,000,000
Settlement loss (gain)			(20,000,000)	2,000,000
Special termination benefits		4,000,000	2,000,000	12,000,000
Net benefit (gain) cost	92,000,000	99,000,000	265,000,000	307,000,000
U.S. non-qualified plan participants
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2012					31,000,000
Contributions to benefit plans			29,000,000
Expected contribution to benefit plans as of balance sheet date	8,000,000		8,000,000
Retirement medical savings account | 2012 EER
Amortization and deferrals:
Curtailment gain			(37,000,000)
Special termination benefits			227,000,000
Future Contributions and Funding Policy
Contributions to benefit plans	12,000		12,000
Post-Retirement Benefit Plans
Net benefit (gain) cost
Service cost	2,000,000	2,000,000	6,000,000	7,000,000
Interest cost	9,000,000	9,000,000	26,000,000	26,000,000
Expected return on plan assets	(9,000,000)	(9,000,000)	(28,000,000)	(27,000,000)
Amortization and deferrals:
Actuarial loss (benefit)	(1,000,000)		(3,000,000)	1,000,000
Prior service benefit	(20,000,000)	(20,000,000)	(63,000,000)	(62,000,000)
Net periodic benefit (gain) cost	(19,000,000)	(18,000,000)	(62,000,000)	(55,000,000)
Curtailment gain	(4,000,000)		(4,000,000)
Special termination benefits	227,000,000		227,000,000
Net benefit (gain) cost	204,000,000	(18,000,000)	161,000,000	(55,000,000)
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2012					30,000,000
Contributions to benefit plans			19,000,000
Expected contribution to benefit plans as of balance sheet date	$ 20,000,000		$ 20,000,000