Activity Under Employee Stock Plans (Parenthetical) (Detail) (USD $)	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010	Oct. 02, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Options Exercisable	5,540,000	6,188,000	8,449,000	10,140,000
Weighted Average Exercise Price, Options Exercisable	$ 46.91	$ 45.42	$ 43.16	$ 40.18
Maximum payout of shares that could be issued for each performance unit granted	1.5

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant