Retirement and Post-Retirement Benefit Plans (Details 3) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Amortization and deferrals:
Net benefit cost	$ 140	$ 341	$ 142
U.S. Defined Benefit Plans
Defined Benefit Plan Settlement Charges
Defined benefit plan settlement charges		225
Net benefit (credit) cost
Service cost	0	0	0
Interest cost	0	16	15
Expected return on plan assets	0	0	0
Amortization and deferrals:
Actuarial loss	0	2	2
Prior service benefit	0	0	0
Net periodic benefit cost	0	18	17
Curtailment gain	0	0	0
Settlement loss	0	0	0
Special termination benefits	0	0	0
Net benefit cost	$ 0	$ 18	$ 17
Weighted average assumptions used to calculate net benefit (credit) cost
Discount rate	3.80%	4.40%	4.80%
Expected increase in compensation levels	2.00%	0.00%	0.00%
Expected long-term return on plan assets	0.00%	0.00%	0.00%
Non-U.S. Defined Benefit Plans
Net benefit (credit) cost
Service cost	$ 254	$ 121	$ 74
Interest cost	549	337	283
Expected return on plan assets	(983)	(570)	(364)
Amortization and deferrals:
Actuarial loss	311	218	82
Prior service benefit	(24)	(6)	(2)
Net periodic benefit cost	107	100	73
Curtailment gain	(5)	0	(1)
Settlement loss	9	4	8
Special termination benefits	25	18	39
Net benefit cost	$ 136	$ 122	$ 119
Weighted average assumptions used to calculate net benefit (credit) cost
Discount rate	3.00%	3.00%	4.20%
Expected increase in compensation levels	2.50%	2.40%	2.80%
Expected long-term return on plan assets	6.20%	6.90%	7.80%
Post-Retirement Benefit Plans
Net benefit (credit) cost
Service cost	$ 3	$ 0	$ 0
Interest cost	6	1	0
Expected return on plan assets	(2)	0	0
Amortization and deferrals:
Actuarial loss	(3)	0	0
Prior service benefit	0	(1)	0
Net periodic benefit cost	4	0	0
Curtailment gain	0	0	0
Settlement loss	0	0	0
Special termination benefits	0	0	0
Net benefit cost	$ 4	$ 0	$ 0
Weighted average assumptions used to calculate net benefit (credit) cost
Discount rate	4.60%	4.70%	0.00%
Expected increase in compensation levels	0.00%	0.00%	0.00%
Expected long-term return on plan assets	4.00%	0.00%	0.00%

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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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- Definition

Defined Benefit Plan, Settlements, Benefit Obligation1

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No definition available.

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

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(1)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Prior Service Cost
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- Definition

The interest rate used to adjust for the time value of money.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

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- Definition

Expected rate of compensation increases (for pay-related plans).

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- Definition

If applicable, the cost of providing special or contractual termination benefits recognized during the period on the projected benefit obligation.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6512171

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Plan Curtailment
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- Definition

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.

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6525008

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