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Notional Amounts of Outstanding Derivative Instruments and Credit Risk Amounts Associated with Outstanding or Unsettled Derivative Instruments (Detail) - USD ($) $ in Millions | Sep. 26, 2015 | Sep. 27, 2014
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Derivatives Designated as Hedging Instruments | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Notional Amount | $ 70,054 | $ 42,945
Credit Risk | 1,385 | 1,333
Derivatives Designated as Hedging Instruments | Interest rate contracts |  |
Derivative [Line Items] |  |
Notional Amount | 18,750 | 12,000
Credit Risk | 394 | 89
Not Designated as Hedging Instrument | Foreign exchange contracts |  |
Derivative [Line Items] |  |
Notional Amount | 49,190 | 38,510
Credit Risk | $ 109 | $ 222

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- Definition Credit risk amount of foreign currency derivative instruments designated as hedging instruments as of the balance sheet date. + References No definition available. + Details
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- Definition Gross exposure to potential accounting loss on outstanding or unsettled derivative instruments that if all counterparties failed to perform according to the terms of the contract. + References No definition available. + Details
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- Definition Credit risk amount of interest rate derivative instruments designated as hedging instruments as of the balance sheet date. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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