Summary of Cash Flows Associated With Issuance and Maturities of Commercial Paper (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 27, 2014
Maturities less than 90 days:
Proceeds from (repayments of) commercial paper, net	$ 1,865
Maturities greater than 90 days:
Proceeds from commercial paper	4,771
Repayments of commercial paper	(330)
Maturities greater than 90 days, net	4,441
Total proceeds from issuance of commercial paper, net	$ 6,306

The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

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The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment of more than three months but less than one year or one operating cycle (if the normal cycle is more than one year).

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The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment within three months.

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

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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