Reconciliation of Weighted Average Number of Common and Common Equivalent Shares Outstanding and Number of Awards Excluded from Diluted Earnings Per Share (Detail) In Millions, unless otherwise specified	12 Months Ended
Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Earnings Per Share Disclosure [Line Items]
Weighted average number of common shares outstanding (basic)	1,794	1,878	1,915
Weighted average dilutive impact of Awards	24	31	33
Weighted average number of common and common equivalent shares outstanding (diluted)	1,818	1,909	1,948
Awards excluded from diluted earnings per share	10	8	37

Reconciliation of Weighted Average Number of Common and Common Equivalent Shares Outstanding and Number of Awards Excluded from Diluted Earnings Per Share (Detail)
In Millions, unless otherwise specified

12 Months Ended

Sep. 29, 2012

Oct. 01, 2011

Oct. 02, 2010

Earnings Per Share Disclosure [Line Items]

Weighted average number of common shares outstanding (basic)

1,794

1,878

1,915

Weighted average dilutive impact of Awards

Weighted average number of common and common equivalent shares outstanding (diluted)

1,818

1,909

1,948

Awards excluded from diluted earnings per share

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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-URI http://asc.fasb.org/extlink&oid=6528421

+ Details