Guarantees (Details) (USD $) In Millions	9 Months Ended
Jul. 31, 2011
Changes in aggregated product warranty liabilities
Product warranty liability at the beginning of the period	$ 2,447
Accruals for warranties issued	1,966
Adjustments related to pre-existing warranties (including changes in estimates)	(40)
Settlements made (in cash or in kind)	(1,961)
Product warranty liability at the end of the period	$ 2,412

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 15
-Subparagraph 5
-Article 9

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ Details

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- Definition

Represents the aggregate increase (decrease) in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ Details

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- Definition

Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

+ Details

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