Notional Amounts of Outstanding Derivative Instruments and Credit Risk Amounts Associated with Outstanding or Unsettled Derivative Instruments (Detail) - USD ($) $ in Millions	Mar. 26, 2016	Sep. 26, 2015
Derivatives Designated as Hedging Instruments \| Foreign exchange contracts
Derivative [Line Items]
Notional Amount	$ 41,996	$ 70,054
Credit Risk	564	1,385
Derivatives Designated as Hedging Instruments \| Interest rate contracts
Derivative [Line Items]
Notional Amount	23,750	18,750
Credit Risk	557	394
Not Designated as Hedging Instrument \| Foreign exchange contracts
Derivative [Line Items]
Notional Amount	30,573	49,190
Credit Risk	$ 69	$ 109

- 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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Namespace Prefix:	aapl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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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Namespace Prefix:	aapl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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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Namespace Prefix:	aapl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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