Summary of Term Debt (Parenthetical) (Detail) - USD ($) $ in Billions	3 Months Ended	12 Months Ended
Dec. 26, 2015	Sep. 26, 2015
2013 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	$ 17.0	$ 17.0
2014 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	12.0	$ 12.0
2015 debt issuances
Debt Instrument [Line Items]
Debt instrument, face amount	$ 27.3
Fixed-rate 0.45% - 3.85% notes \| 2013 debt issuance
Debt Instrument [Line Items]
Debt instrument interest rate, minimum	0.45%	0.45%
Debt instrument interest rate, maximum	3.85%	3.85%
Fixed-rate 1.05% - 4.45% notes \| 2014 debt issuance
Debt Instrument [Line Items]
Debt instrument interest rate, minimum	1.05%	1.05%
Debt instrument interest rate, maximum	4.45%	4.45%
Fixed-rate 0.35% - 4.375% notes \| 2015 debt issuances
Debt Instrument [Line Items]
Debt instrument interest rate, minimum	0.35%	0.35%
Debt instrument interest rate, maximum	4.375%	4.375%

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=aapl_TwentyThirteenDebtIssuanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=aapl_TwentyFourteenDebtIssuanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=aapl_TwentyFifteenDebtIssuanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=aapl_FixedRateRangeFromZeroPointFourFiveToThreePointEightFivePercentageNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=aapl_FixedRateRangeFromOnePointZeroFiveToFourPointFourFivePercentageNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=aapl_FixedRateRangeFromZeroPointThreeFiveToFourPointThreeSevenFivePercentageNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: