Reconciliation of Weighted Average Number of Common and Common Equivalent Shares Outstanding and Awards Excluded from Diluted Earnings Per Share Calculation (Details) In Millions, unless otherwise specified	3 Months Ended
Dec. 29, 2012	Dec. 31, 2011
Shares (in millions):
Weighted average number of common shares outstanding (basic)	1,777	1,798
Weighted average dilutive impact of equity-based compensation awards	23	26
Weighted average number of common and common equivalent shares outstanding (diluted)	1,800	1,824
Awards excluded from diluted earnings per share	1	10

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

3 Months Ended

Dec. 29, 2012

Dec. 31, 2011

Shares (in millions):

Weighted average number of common shares outstanding (basic)

1,777

1,798

Weighted average dilutive impact of equity-based compensation awards

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

1,800

1,824

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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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

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-Name Statement of Financial Accounting Standard (FAS)

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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

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

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-Name Statement of Financial Accounting Standard (FAS)

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-Glossary Weighted-Average Number of Common Shares Outstanding

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

+ Details