Retirement and Post-Retirement Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012	Oct. 31, 2012
Non US Pension Plans
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2013					$ 674
Contributions to benefit plans			363
Expected contribution to benefit plans as of balance sheet date	293		293
U.S. Defined Benefit Plans
Net benefit (credit) cost
Interest cost	140	141	280	283
Expected return on plan assets	(211)	(198)	(423)	(396)
Amortization and deferrals:
Actuarial loss (gain)	19	11	39	22
Net periodic benefit (credit) cost	(52)	(46)	(104)	(91)
Settlements (gain) loss	3		8
Net benefit (credit) cost	(49)	(46)	(96)	(91)
Non-U.S. Defined Benefit Plans
Net benefit (credit) cost
Service cost	84	74	170	148
Interest cost	168	174	341	349
Expected return on plan assets	(250)	(206)	(507)	(413)
Amortization and deferrals:
Actuarial loss (gain)	85	59	172	119
Prior service benefit	(6)	(6)	(13)	(12)
Net periodic benefit (credit) cost	81	95	163	191
Settlements (gain) loss		8		(20)
Special termination benefits	2	1	5	2
Net benefit (credit) cost	83	104	168	173
U.S. non-qualified plan participants
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2013					33
Contributions to benefit plans			35
Expected contribution to benefit plans as of balance sheet date	16		16
Post-Retirement Benefit Plans
Net benefit (credit) cost
Service cost	2	2	3	4
Interest cost	8	8	15	17
Expected return on plan assets	(8)	(9)	(17)	(18)
Amortization and deferrals:
Actuarial loss (gain)		(1)		(2)
Prior service benefit	(17)	(22)	(34)	(43)
Net periodic benefit (credit) cost	(15)	(22)	(33)	(42)
Curtailment gain	(4)		(7)
Net benefit (credit) cost	(19)	(22)	(40)	(42)
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2013					124
Contributions to benefit plans			47
Expected contribution to benefit plans as of balance sheet date	$ 77		$ 77

The maximum increase in the participant's notional RMSA account balances made by the employer.

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The total amount of net periodic benefit cost (credit) for defined benefit plans for the period, before gain or loss due to settlements or curtailments.

+ References

No definition available.

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The amount of gains or losses recognized in net periodic benefit cost.

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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

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Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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The amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.

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