2.2.0.7 true Assets and Liabilities Measured at Fair Value (Detail) (USD $) 134 - Disclosure - Assets and Liabilities Measured at Fair Value (Detail) true false In Millions false false 1 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 pure Standard http://www.xbrl.org/2003/instance pure 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ false 2 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ 2 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 3 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 true true false false 44208000000 44208 [1] false false false 2 true true false false 32951000000 32951 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 4 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 5 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 184000000 184 [1] false false false 2 false true false false 25000000 25 [1] false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 6 Quoted Prices in Active Markets for Identical Instruments (Level 1) 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 3 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 4 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 7 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 8 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1796000000 1796 false false false 2 false true false false 1669000000 1669 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 9 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 10 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 11 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Money market funds 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 5 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 6 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 12 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 13 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1707000000 1707 false false false 2 false true false false 1608000000 1608 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 16 Quoted Prices in Active Markets for Identical Instruments (Level 1) | U.S. Treasury Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 7 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 8 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 17 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 18 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 21 Quoted Prices in Active Markets for Identical Instruments (Level 1) | U.S. agency securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 9 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 10 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 22 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 23 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 26 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Non-U.S. government securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 11 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 12 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 27 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 28 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 31 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Certificates of deposit and time deposits 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 13 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 14 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 32 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 33 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 36 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Commercial Paper 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 15 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 16 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 37 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 38 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 41 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Corporate Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 17 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 18 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 42 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 43 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 46 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Municipal securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 19 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 20 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 47 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 48 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 51 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Marketable equity securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 21 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 22 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 52 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 53 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 89000000 89 false false false 2 false true false false 61000000 61 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 56 Quoted Prices in Active Markets for Identical Instruments (Level 1) | Foreign exchange contracts 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 23 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 24 USD true false false false Quoted Prices in Active Markets for Identical Instruments (Level 1) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel1Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 57 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 58 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 59 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 60 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 61 Significant Other Observable Inputs (Level 2) 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 25 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 26 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 62 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 63 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 42412000000 42412 false false false 2 false true false false 31282000000 31282 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 64 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 65 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 184000000 184 false false false 2 false true false false 25000000 25 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 66 Significant Other Observable Inputs (Level 2) | Money market funds 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 27 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 28 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 67 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 68 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 71 Significant Other Observable Inputs (Level 2) | U.S. Treasury Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 29 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 30 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 72 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 73 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 7287000000 7287 false false false 2 false true false false 3616000000 3616 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 76 Significant Other Observable Inputs (Level 2) | U.S. agency securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 31 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 32 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 77 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 78 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 10518000000 10518 false false false 2 false true false false 11107000000 11107 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 81 Significant Other Observable Inputs (Level 2) | Non-U.S. government securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 33 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 34 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 82 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 83 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 3177000000 3177 false false false 2 false true false false 321000000 321 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 86 Significant Other Observable Inputs (Level 2) | Certificates of deposit and time deposits 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 35 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 36 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 87 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 88 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1451000000 1451 false false false 2 false true false false 1714000000 1714 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 91 Significant Other Observable Inputs (Level 2) | Commercial Paper 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 37 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 38 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 92 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 93 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 2421000000 2421 false false false 2 false true false false 4197000000 4197 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 96 Significant Other Observable Inputs (Level 2) | Corporate Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 39 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 40 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 97 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 98 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 15711000000 15711 false false false 2 false true false false 9786000000 9786 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 101 Significant Other Observable Inputs (Level 2) | Municipal securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 41 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 42 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 102 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 103 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1641000000 1641 false false false 2 false true false false 504000000 504 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 106 Significant Other Observable Inputs (Level 2) | Marketable equity securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 43 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 44 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 107 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 108 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 111 Significant Other Observable Inputs (Level 2) | Foreign exchange contracts 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 45 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 46 USD true false false false Significant Other Observable Inputs (Level 2) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel2Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 112 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 113 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 206000000 206 false false false 2 false true false false 37000000 37 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 114 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 115 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 184000000 184 false false false 2 false true false false 25000000 25 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 116 Significant Unobservable Inputs (Level 3) 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 47 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 48 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 117 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 118 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 119 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 120 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 121 Significant Unobservable Inputs (Level 3) | Money market funds 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 49 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 50 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 122 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 123 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 126 Significant Unobservable Inputs (Level 3) | U.S. Treasury Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 51 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 52 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 127 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 128 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 131 Significant Unobservable Inputs (Level 3) | U.S. agency securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 53 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 54 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 132 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 133 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 136 Significant Unobservable Inputs (Level 3) | Non-U.S. government securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 55 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 56 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 137 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 138 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 141 Significant Unobservable Inputs (Level 3) | Certificates of deposit and time deposits 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 57 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 58 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 142 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 143 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 146 Significant Unobservable Inputs (Level 3) | Commercial Paper 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 59 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 60 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 147 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 148 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 151 Significant Unobservable Inputs (Level 3) | Corporate Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 61 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 62 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 152 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 153 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 156 Significant Unobservable Inputs (Level 3) | Municipal securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 63 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 64 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 157 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 158 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 161 Significant Unobservable Inputs (Level 3) | Marketable equity securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 65 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 66 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 162 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 163 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 166 Significant Unobservable Inputs (Level 3) | Foreign exchange contracts 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 67 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 68 USD true false false false Significant Unobservable Inputs (Level 3) aapl_FairValueAssetsAndLiabilitiesComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_FairValueInputsLevel3Member aapl_FairValueAssetsAndLiabilitiesComponentsAxis explicitMember false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 167 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 168 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 169 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 170 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 171 Money market funds 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 69 USD true false false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 70 USD true false false false Money market funds aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_MoneyMarketFundsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 172 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 173 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1707000000 1707 [1] false false false 2 false true false false 1608000000 1608 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 176 U.S. Treasury Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 71 USD true false false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 72 USD true false false false U.S. Treasury Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USTreasurySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 177 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 178 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 7287000000 7287 [1] false false false 2 false true false false 3616000000 3616 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 181 U.S. agency securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 73 USD true false false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 74 USD true false false false U.S. agency securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USGovernmentAgenciesDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 182 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 183 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 10518000000 10518 [1] false false false 2 false true false false 11107000000 11107 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 186 Non-U.S. government securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 75 USD true false false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 76 USD true false false false Non-U.S. government securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignGovernmentDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 187 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 188 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 3177000000 3177 [1] false false false 2 false true false false 321000000 321 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 191 Certificates of deposit and time deposits 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 77 USD true false false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 78 USD true false false false Certificates of deposit and time deposits aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_BankTimeDepositsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 192 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 193 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1451000000 1451 [1] false false false 2 false true false false 1714000000 1714 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 196 Commercial Paper 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 79 USD true false false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 80 USD true false false false Commercial Paper aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommercialPaperMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 197 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 198 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 2421000000 2421 [1] false false false 2 false true false false 4197000000 4197 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 201 Corporate Securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 81 USD true false false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 82 USD true false false false Corporate Securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CorporateDebtSecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 202 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 203 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 15711000000 15711 [1] false false false 2 false true false false 9786000000 9786 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 206 Municipal securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 83 USD true false false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 84 USD true false false false Municipal securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_USStatesAndPoliticalSubdivisionsMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 207 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 208 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 1641000000 1641 [1] false false false 2 false true false false 504000000 504 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 211 Marketable equity securities 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 85 USD true false false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 86 USD true false false false Marketable equity securities aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_EquitySecuritiesMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 212 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 213 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 89000000 89 [1] false false false 2 false true false false 61000000 61 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 216 Foreign exchange contracts 0 na true na na No definition available. false true false false false false false false false false false http://www.apple.com/taxonomy/role/disclosureassetsandliabilitiesmeasuredatfairvalue false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false false 87 USD true false false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 88 USD true false false false Foreign exchange contracts aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ForeignExchangeContractMember aapl_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByMajorTypeAxis explicitMember iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 217 Assets measured at fair value: 2 aapl_FairValueAssetsMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Assets Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Assets Measured on Recurring Basis [Abstract] false 218 Assets measured at fair value 2 aapl_FairValueAssetsMeasuredOnRecurringBasis aapl false debit instant Fair Value, Assets Measured on Recurring Basis false false false false false false false false false false false false 1 false true false false 206000000 206 [1] false false false 2 false true false false 37000000 37 [1] false false false xbrli:monetaryItemType monetary Fair Value, Assets Measured on Recurring Basis No authoritative reference available. false 219 Liabilities measured at fair value: 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract aapl false na duration Fair Value, Liabilities Measured on Recurring Basis [Abstract] false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string Fair Value, Liabilities Measured on Recurring Basis [Abstract] false 220 Liabilities measured at fair value 2 aapl_FairValueLiabilitiesMeasuredOnRecurringBasis aapl false credit instant Fair Value, Liabilities Measured on Recurring Basis false false false false false false false false false false false false 1 true true false false 184000000 184 [1] false false false 2 true true false false 25000000 25 [1] false false false xbrli:monetaryItemType monetary Fair Value, Liabilities Measured on Recurring Basis No authoritative reference available. false 1 The total fair value amounts for assets and liabilities also represent the related carrying amounts. 2 147 false Millions UnKnown UnKnown false true