Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

-Publisher SEC

-Name Regulation S-X (SX)

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

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

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

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-Section S99

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-Subparagraph (SX 210.5-03.8)

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

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Weighted average interest rate of short-term debt outstanding.

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Debt - Additional Information (Detail)	3 Months Ended					3 Months Ended
Debt - Additional Information (Detail)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)	Sep. 27, 2014 USD ($)	Dec. 27, 2014 2015 Euro-Denominated Debt Issuance EUR (€)	Dec. 27, 2014 Currency Swap USD ($)	Dec. 27, 2014 Maximum	Dec. 27, 2014 Level 2 USD ($)	Sep. 27, 2014 Level 2 USD ($)
Debt Instrument [Line Items]
Commercial paper	$ 3,899,000,000us-gaap_CommercialPaper		$ 6,308,000,000us-gaap_CommercialPaper
Commercial paper, weighted-average interest rate	0.11%		0.12%
Commercial paper, maturity period						9 months
Debt instrument aggregate principal amount	32,418,000,000us-gaap_DebtInstrumentCarryingAmount		29,000,000,000us-gaap_DebtInstrumentCarryingAmount	2,800,000,000
Notional Amount					3,500,000,000
Interest expense	128,000,000us-gaap_InterestExpenseDebt	84,000,000us-gaap_InterestExpenseDebt
Debt instrument fair value							$ 32,400,000,000	$ 28,500,000,000