v2.4.1.9
Summary of Long-Term Debt (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 27, 2014
Sep. 27, 2014
Debt Instrument [Line Items]    
Total borrowings $ 32,418us-gaap_DebtInstrumentCarryingAmount $ 29,000us-gaap_DebtInstrumentCarryingAmount
Unamortized discount (69)us-gaap_DebtInstrumentUnamortizedDiscount (52)us-gaap_DebtInstrumentUnamortizedDiscount
Hedge accounting fair value adjustments 155aapl_HedgeAccountingAdjustmentsRelatedToLongTermDebt 39aapl_HedgeAccountingAdjustmentsRelatedToLongTermDebt
Total long-term debt 32,504us-gaap_LongTermDebt 28,987us-gaap_LongTermDebt
Floating-rate notes due 2016    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySixteenMember		 [1] 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySixteenMember		 [1]
Debt instrument effective interest rate 0.51%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySixteenMember		 [1] 0.51%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySixteenMember		 [1]
Floating-rate notes due 2017    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySeventeenMember		 [2] 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySeventeenMember		 [2]
Debt instrument effective interest rate 0.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySeventeenMember		 [2] 0.31%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentySeventeenMember		 [2]
Floating-rate notes due 2018    
Debt Instrument [Line Items]    
Debt instrument, senior notes 2,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyEighteenMember		 [1] 2,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyEighteenMember		 [1]
Debt instrument effective interest rate 1.10%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyEighteenMember		 [1] 1.10%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyEighteenMember		 [1]
Floating-rate notes due 2019    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyNineteenMember		 [2] 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyNineteenMember		 [2]
Debt instrument effective interest rate 0.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyNineteenMember		 [2] 0.54%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesDueTwentyNineteenMember		 [2]
Fixed-rate 0.45% notes due 2016    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesZeroPointFourFivePercentDueTwentySixteenMember		 [1] 1,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesZeroPointFourFivePercentDueTwentySixteenMember		 [1]
Debt instrument effective interest rate 0.51%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesZeroPointFourFivePercentDueTwentySixteenMember		 [1] 0.51%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesZeroPointFourFivePercentDueTwentySixteenMember		 [1]
Fixed-rate 1.05% notes due 2017    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroFivePercentDueTwentySeventeenMember		 [2] 1,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroFivePercentDueTwentySeventeenMember		 [2]
Debt instrument effective interest rate 0.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroFivePercentDueTwentySeventeenMember		 [2] 0.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroFivePercentDueTwentySeventeenMember		 [2]
Fixed-rate 1.00% notes due 2018    
Debt Instrument [Line Items]    
Debt instrument, senior notes 4,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroPercentDueTwentyEighteenMember		 [1] 4,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroPercentDueTwentyEighteenMember		 [1]
Debt instrument effective interest rate 1.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroPercentDueTwentyEighteenMember		 [1] 1.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesOnePointZeroPercentDueTwentyEighteenMember		 [1]
Fixed-rate 2.10% notes due 2019    
Debt Instrument [Line Items]    
Debt instrument, senior notes 2,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointOneZeroPercentDueTwentyNineteenMember		 [2] 2,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointOneZeroPercentDueTwentyNineteenMember		 [2]
Debt instrument effective interest rate 0.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointOneZeroPercentDueTwentyNineteenMember		 [2] 0.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointOneZeroPercentDueTwentyNineteenMember		 [2]
Fixed-rate 2.85% notes due 2021    
Debt Instrument [Line Items]    
Debt instrument, senior notes 3,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointEightFivePercentDueTwentyTwentyOneMember		 [2] 3,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointEightFivePercentDueTwentyTwentyOneMember		 [2]
Debt instrument effective interest rate 0.78%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointEightFivePercentDueTwentyTwentyOneMember		 [2] 0.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointEightFivePercentDueTwentyTwentyOneMember		 [2]
Fixed-rate 1.00% Euro-denominated notes due 2022    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,709us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointZeroPercentDueTwentyTwentyTwoMember		 [3] 0us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointZeroPercentDueTwentyTwentyTwoMember		 [3]
Debt instrument effective interest rate 2.94%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointZeroPercentDueTwentyTwentyTwoMember		 [3] 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointZeroPercentDueTwentyTwentyTwoMember		 [3]
Fixed-rate 2.40% notes due 2023    
Debt Instrument [Line Items]    
Debt instrument, senior notes 5,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointFourZeroPercentDueTwentyTwentyThreeMember		 [1] 5,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointFourZeroPercentDueTwentyTwentyThreeMember		 [1]
Debt instrument effective interest rate 2.44%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointFourZeroPercentDueTwentyTwentyThreeMember		 [1] 2.44%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesTwoPointFourZeroPercentDueTwentyTwentyThreeMember		 [1]
Fixed-rate 3.45% notes due 2024    
Debt Instrument [Line Items]    
Debt instrument, senior notes 2,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointFourFivePercentDueTwentyTwentyFourMember		 [2] 2,500us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointFourFivePercentDueTwentyTwentyFourMember		 [2]
Debt instrument effective interest rate 0.89%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointFourFivePercentDueTwentyTwentyFourMember		 [2] 0.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointFourFivePercentDueTwentyTwentyFourMember		 [2]
Fixed-rate 1.63% Euro-denominated notes due 2026    
Debt Instrument [Line Items]    
Debt instrument, senior notes 1,709us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointSixThreePercentDueTwentyTwentySixMember		 [3] 0us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointSixThreePercentDueTwentyTwentySixMember		 [3]
Debt instrument effective interest rate 3.45%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointSixThreePercentDueTwentyTwentySixMember		 [3] 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_EuroDenominatedSeniorNotesOnePointSixThreePercentDueTwentyTwentySixMember		 [3]
Fixed-rate 3.85% notes due 2043    
Debt Instrument [Line Items]    
Debt instrument, senior notes 3,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointEightFivePercentDueTwentyFortyThreeMember		 [1] 3,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointEightFivePercentDueTwentyFortyThreeMember		 [1]
Debt instrument effective interest rate 3.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointEightFivePercentDueTwentyFortyThreeMember		 [1] 3.91%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesThreePointEightFivePercentDueTwentyFortyThreeMember		 [1]
Fixed-rate 4.45% notes due 2044    
Debt Instrument [Line Items]    
Debt instrument, senior notes $ 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesFourPointFourFivePercentDueTwentyFortyFourMember		 [2] $ 1,000us-gaap_SeniorNotes
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesFourPointFourFivePercentDueTwentyFortyFourMember		 [2]
Debt instrument effective interest rate 4.48%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesFourPointFourFivePercentDueTwentyFortyFourMember		 [2] 4.48%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= aapl_SeniorNotesFourPointFourFivePercentDueTwentyFortyFourMember		 [2]
[1] Tranche relates to the $17.0 billion debt issuance in the third quarter of 2013.
[2] Tranche relates to the $12.0 billion debt issuance in the third quarter of 2014.
[3] Tranche relates to Euro-denominated debt issuance of €2.8 billion in the first quarter of 2015.