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Property, Plant and Equipment, Net (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 27, 2014
Sep. 27, 2014
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 40,747us-gaap_PropertyPlantAndEquipmentGross $ 39,015us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization (20,355)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (18,391)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Total property, plant and equipment, net 20,392us-gaap_PropertyPlantAndEquipmentNet 20,624us-gaap_PropertyPlantAndEquipmentNet
Land and Buildings    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment 5,152us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndBuildingMember		 4,863us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LandAndBuildingMember
Machinery, Equipment and Internal-Use Software    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment 31,010us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= aapl_MachineryEquipmentAndInternalUseSoftwareMember		 29,639us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= aapl_MachineryEquipmentAndInternalUseSoftwareMember
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Gross property, plant and equipment $ 4,585us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember		 $ 4,513us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdImprovementsMember