Balance Sheet Details (Details) (USD $)	9 Months Ended
Jul. 31, 2011	Jul. 31, 2010	Oct. 31, 2010
Accounts and financing receivables
Accounts receivable, gross	$ 18,561,000,000		$ 19,006,000,000
Allowance for doubtful accounts	(440,000,000)		(525,000,000)
Accounts receivable, net	18,121,000,000		18,481,000,000
Financing receivables, gross	3,227,000,000		3,050,000,000
Allowance for doubtful accounts - financing receivables	(60,000,000)		(64,000,000)
Financing receivables, net	3,167,000,000		2,986,000,000
Trade Receivable Facility, Disclosures
Amount of facility, program for sale of trade receivables	1,500,000,000		524,000,000
Proceeds from sale of trade receivables	1,800,000,000	1,300,000,000
Available amount, programs for sale of trade receivables	780,000,000		175,000,000
Trade Receivable Facility, Partial Recourse Basis
Trade Receivable Facility, Disclosures
Amount of facility, program for sale of trade receivables	1,000,000,000
Trade Receivable Facility, Non-Recourse Basis
Trade Receivable Facility, Disclosures
Amount of facility, program for sale of trade receivables	$ 500,000,000

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The amount under non- recourse revolving trade receivables-based facilities which permit the entity to sell certain trade receivables to third parties.

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The amount under partial recourse revolving trade receivables-based facilities which permit the entity to sell certain trade receivables to third parties.

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The amount of proceeds from sale of trade receivables to third parties during the reporting period.

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The amount of available capacity under trade receivables-based facilities which permit the entity to sell certain trade receivables to third parties.

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- Definition

The amount under revolving trade receivables-based facilities which permit the entity to sell certain trade receivables to third parties.

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- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 3
-Subparagraph a, b
-Article 5

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a(1)
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 4
-Article 5

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 4
-Article 5

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A valuation allowance relating to a written agreement to receive money (at a specified future date(s) within one year from the reporting date (or the normal operating cycle, whichever is longer), consisting of principal as well as any accrued interest) for the portion that is expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 4
-Article 5

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The net amount due within one year of the balance sheet date or the normal operating cycle, if longer, consisting of: (a) minimum lease payments due on direct financing and sales-type leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 23
-Subparagraph a(i)

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) within one year of the balance sheet date or the normal operating cycle, whichever is longer. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 3
-Section A
-Paragraph 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph b
-Article 5

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