Derivatives Derivative instruments fair value and balance sheet location (Details) (USD $) In Millions	Jul. 31, 2011	Oct. 31, 2010
Derivatives, Fair Value [Line Items]
Derivative Assets Designated as Hedging Instrument, Fair Value	$ 25	$ 74
Total Asset Derivatives	38	85
Derivative Liability Designated as Hedging Instrument, Fair Value	7	15
Total Liability Derivatives	14	22
Fair Value Hedging [Member] \| Interest Rate Contract [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets Designated as Hedging Instrument, Fair Value	15	61
Fair Value Hedging [Member] \| Interest Rate Contract [Member] \| Other Long Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability Designated as Hedging Instrument, Fair Value	0	0
Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets Designated as Hedging Instrument, Fair Value	10	13
Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member] \| Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability Designated as Hedging Instrument, Fair Value	7	15
Nondesignated [Member] \| Foreign Exchange Contract [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets Not Designated as Hedging Instrument, Fair Value	13	11
Total Asset Derivatives	13	11
Nondesignated [Member] \| Foreign Exchange Contract [Member] \| Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability Not Designated as Hedging Instrument, Fair Value	7	7
Total Liability Derivatives	$ 7	$ 7

Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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