v2.4.1.9
Derivative Instruments - Fair Values (Details)
In Millions, unless otherwise specified
 3 Months Ended 3 Months Ended 3 Months Ended
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Yen
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Yen
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Singapore dollar
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Shekel
USD ($)
Nov. 28, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Reorganization obligation [Member]
Yen
JPY (¥)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Forward Contracts [Member]
Less Than One Year From Balance Sheet Date [Member]
Reorganization obligation [Member]
Yen
JPY (¥)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Convertible notes settlement obligations [Member]
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Convertible notes settlement obligations [Member]
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Yen
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Yen
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Singapore dollar
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Shekel
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Current Debt [Member]
Convertible notes settlement obligations [Member]
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Total Current Liabilities [Member]
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Yen
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Yen
USD ($)
Dec. 04, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Singapore dollar
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Forward Contracts [Member]
Shekel
USD ($)
Aug. 28, 2014
Not Designated as Hedging Instrument [Member]
Other noncurrent liabilities [Member]
Convertible notes settlement obligations [Member]
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Contracts [Member]
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Contracts [Member]
Yen
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Contracts [Member]
Yen
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Forward Contracts [Member]
Euro
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Yen
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Yen
USD ($)
Dec. 04, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Euro
USD ($)
Aug. 28, 2014
Designated as Hedging Instrument [Member]
Cash Flow Hedging [Member]
Accounts Payable and Accrued Expenses [Member]
Forward Contracts [Member]
Euro
USD ($)
Notional Disclosures [Abstract]                                                                                      
Notional Amount Outstanding $ 183invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 1,191invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 111invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 554invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 72invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 245invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 330invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_SGD
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] $ 62invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_ILS
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1] ¥ 20,000invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DebtInstrumentAxis
= mu_ReorganizationobligationMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 ¥ 10,000invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DebtInstrumentAxis
= mu_ReorganizationobligationMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ mu_HedgingInstrumentDurationPeriodtoMaturityAxis
= mu_LessThanOneYearFromBalanceSheetDateMember		                                         $ 82invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 $ 118invest_DerivativeNotionalAmount
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		   $ 8invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 $ 94invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 $ 74invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 $ 24invest_DerivativeNotionalAmount
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		            
Derivative, Nonmonetary Notional Amount                       12invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= mu_ConvertiblenotessettlementobligationsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [1]                                                              
Derivative, Fair Value, Net [Abstract]                                                                                      
Fair Value of Liability                         $ (24)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (19)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (12)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (5)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (1)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_SGD
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (1)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_ILS
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (389)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_ShortTermDebtMember
/ us-gaap_DerivativeInstrumentRiskAxis
= mu_ConvertiblenotessettlementobligationsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ (403)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= mu_TotalCurrentLiabilitiesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [2] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ (6)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ (6)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_SGD
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_CurrencyAxis
= currency_ILS
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= mu_ConvertiblenotessettlementobligationsMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember		 [3]               $ (5)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4] $ (2)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4] $ (2)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_JPY
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4] $ (5)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4] $ 0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableMember
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForwardContractsMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember		 [4]
Foreign Currency Cash Flow Hedges [Abstract]                                                                                      
General maturity of non-designated currency forward contracts (in days) 35 days                                                                                    
General maturity of hedge contracts (in days or months)                                                                 12 months                    
Convertible notes settlement obligations derivative term (in days)                     30 days                                                                
[1] Notional amounts of forward contracts in U.S. dollars and convertible notes settlement obligations in shares.
[2] Included in accounts payable and accrued expenses for forward contracts and in current debt for convertible notes settlement obligations.
[3] Included in other noncurrent liabilities.
[4] Included in accounts payable and accrued expenses.