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Fair Value Measurements - Fair and Carrying Value (Details) (USD $)
In Millions, unless otherwise specified
Mar. 05, 2015
Aug. 28, 2014
Fair value disclosure [Line Items]    
Debt $ 6,718us-gaap_DebtAndCapitalLeaseObligations $ 6,593us-gaap_DebtAndCapitalLeaseObligations
Carrying Value [Member] | Convertible Notes [Member]    
Fair value disclosure [Line Items]    
Debt 1,764us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
2,143us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Carrying Value [Member] | Notes and MMJ creditor installment payments    
Fair value disclosure [Line Items]    
Debt 4,009us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationObligationAndOtherNotesMember
3,539us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationObligationAndOtherNotesMember
Fair Value [Member] | Level 2 [Member] | Convertible Notes [Member]    
Fair value disclosure [Line Items]    
Convertible notes 4,761us-gaap_ConvertibleDebtFairValueDisclosures
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
5,886us-gaap_ConvertibleDebtFairValueDisclosures
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Fair Value [Member] | Level 2 [Member] | Notes and MMJ creditor installment payments    
Fair value disclosure [Line Items]    
Notes and MMJ creditor installment payments $ 4,136us-gaap_NotesPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationObligationAndOtherNotesMember
$ 3,634us-gaap_NotesPayableFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationObligationAndOtherNotesMember