Investments - Additional Information (Detail) (USD $)	12 Months Ended
Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Disclosure Investments [Abstract]
Goodwill and intangible assets	$ 700,000,000
Available-for-sale Securities	305,000,000	86,000,000
Non-publicly traded cost-method investments	101,000,000	163,000,000
Investment in leveraged leases	36,000,000	36,000,000
Gain loss on available sale of securities	40,000,000	0	0
Other-than-temporary losses in value of certain investments	$ 37,000,000	$ 11,000,000	$ 24,000,000

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 133

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-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

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+ Details

- Definition

This element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 5

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 03-1

-Paragraph 22

-Subparagraph a

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 325

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596

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-Name FASB Staff Position (FSP)

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+ Details

- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

+ References+ Details