v2.4.1.9
Debt - Schedule of Long-term Debt (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended
Dec. 04, 2014
D
Dec. 02, 2014
Aug. 28, 2014
Debt Instrument [Line Items]      
Current debt $ 1,168us-gaap_DebtCurrent   $ 1,638us-gaap_DebtCurrent
Long-term debt 4,608us-gaap_LongTermDebtAndCapitalLeaseObligations   4,955us-gaap_LongTermDebtAndCapitalLeaseObligations
Debt 5,776us-gaap_DebtAndCapitalLeaseObligations   6,593us-gaap_DebtAndCapitalLeaseObligations
Convertible Debt Issuances [Abstract]      
Share Price (in dollars per share) $ 36.07us-gaap_SharePrice    
Reorganization obligation [Member]      
Debt Instrument [Line Items]      
Current debt 169us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
  192us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
Long-term debt 828us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
  939us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
Debt 997us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
  1,131us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
Effective interest rate (in hundredths) 6.25%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember
   
Capital lease obligations [Member]      
Debt Instrument [Line Items]      
Current debt 315us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]   323us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]
Long-term debt 472us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]   588us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]
Debt 787us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]   911us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
[1]
Effective interest rate (in hundredths) 4.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
  4.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
Long-term Debt, by Maturity [Abstract]      
Debt Instrument, Unamortized Discount (71)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
Remainder of 2015 247us-gaap_CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
2016 295us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
2017 98us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
2018 56us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
2019 52us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
2020 and thereafter 110us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
Debt Instrument, Unamortized Discount (71)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
Capital Lease Obligations 787us-gaap_CapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember
   
Secured Debt [Member] | 2019 senior notes      
Debt Instrument [Line Items]      
Current debt 92us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
  92us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
Long-term debt 324us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
  324us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
Debt 416us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
  416us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
Stated interest rate (in hundredths) 1.258%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
   
Effective interest rate (in hundredths) 1.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
   
Corporate bonds [Member] | 2022 senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Long-term debt 600us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  600us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Debt 600us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  600us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Stated interest rate (in hundredths) 5.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
   
Effective interest rate (in hundredths) 6.14%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
   
Corporate bonds [Member] | 2025 senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Long-term debt 1,150us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  1,150us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Debt 1,150us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
  1,150us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
Stated interest rate (in hundredths) 5.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
   
Effective interest rate (in hundredths) 5.56%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
   
Convertible Debt [Member]      
Convertible Debt Issuances [Abstract]      
Outstanding principal 2,289us-gaap_DebtInstrumentFaceAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Shares issuable upon conversion (in shares) 157us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion value in excess of principal 3,405us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion rights, minimum number of trading days (in days) 20us-gaap_DebtInstrumentConvertibleThresholdTradingDays
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion rights, consecutive trading period (in days) 30 days    
Conversion rights, threshold percentage of applicable conversion price (in hundredths) 130.00%us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt [Member] | 2031B convertible senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
  362us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Long-term debt 0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
  0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Debt 0us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
  362us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
Stated interest rate (in hundredths) 1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 6.98%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt [Member] | 2032C convertible senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Long-term debt 312us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   314us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Debt 312us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   314us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Stated interest rate (in hundredths) 2.375%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 5.95%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt Issuances [Abstract]      
Debt Instrument Put Date Earliest May 31, 2019 [4]    
Outstanding principal 357us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Shares issuable upon conversion (in shares) 37us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share (in dollars per share) $ 9.63us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share threshold (in dollars per share) $ 12.52us-gaap_DebtInstrumentConvertibleStockPriceTrigger
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[5]    
Conversion value in excess of principal 982us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[6]    
Convertible Debt [Member] | 2032D convertible senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Long-term debt 264us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   288us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Debt 264us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3]   288us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Stated interest rate (in hundredths) 3.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 6.33%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt Issuances [Abstract]      
Debt Instrument Put Date Earliest May 31, 2021 [4]    
Outstanding principal 313us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Shares issuable upon conversion (in shares) 31us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share (in dollars per share) $ 9.98us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share threshold (in dollars per share) $ 12.97us-gaap_DebtInstrumentConvertibleStockPriceTrigger
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[5]    
Conversion value in excess of principal 816us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[6]    
Convertible Debt [Member] | 2033E convertible senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 273us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   278us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Long-term debt 0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Debt 273us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   278us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Stated interest rate (in hundredths) 1.625%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 4.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt Issuances [Abstract]      
Debt Instrument Put Date Earliest Feb. 28, 2018 [4]    
Outstanding principal 294us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Shares issuable upon conversion (in shares) 27us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share (in dollars per share) $ 10.93us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share threshold (in dollars per share) $ 14.21us-gaap_DebtInstrumentConvertibleStockPriceTrigger
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[5]    
Conversion value in excess of principal 674us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[6]    
Convertible Debt [Member] | 2033F convertible senior note [Member]      
Debt Instrument [Line Items]      
Current debt 267us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   265us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Long-term debt 0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Debt 267us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2],[3],[7]   265us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Stated interest rate (in hundredths) 2.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 4.93%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt Issuances [Abstract]      
Debt Instrument Put Date Earliest Feb. 28, 2020 [4]    
Outstanding principal 300us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Shares issuable upon conversion (in shares) 27us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share (in dollars per share) $ 10.93us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share threshold (in dollars per share) $ 14.21us-gaap_DebtInstrumentConvertibleStockPriceTrigger
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[5]    
Conversion value in excess of principal 690us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[6]    
Convertible Debt [Member] | 2043G convertible senior notes [Member]      
Debt Instrument [Line Items]      
Current debt 0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]   0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Long-term debt 639us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]   636us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Debt 639us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]   636us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[2]
Stated interest rate (in hundredths) 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Effective interest rate (in hundredths) 6.76%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Convertible Debt Issuances [Abstract]      
Debt Instrument Put Date Earliest Nov. 30, 2028 [4],[8]    
Outstanding principal 1,025us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[8]    
Shares issuable upon conversion (in shares) 35us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share (in dollars per share) $ 29.16us-gaap_DebtInstrumentConvertibleConversionPrice1
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion price per share threshold (in dollars per share) $ 37.91us-gaap_DebtInstrumentConvertibleStockPriceTrigger
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Conversion value in excess of principal 243us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
[6]    
Debt Instrument Issued At A Discount, Original Principal Amount 820mu_DebtInstrumentIssuedAtADiscountOriginalPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Debt Instrument, Scheduled Accreted Principal Amount 917mu_DebtInstrumentScheduledAccretedPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember
   
Notes Payable, Other Payables [Member]      
Debt Instrument [Line Items]      
Current debt 52us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
  126us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
Long-term debt 19us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
  116us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
Debt 71us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
  242us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
Stated interest rate (in hundredths) 2.157%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Effective interest rate (in hundredths) 2.45%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember
   
Line of Credit [Member] | Revolving Credit Facility 1 [Member]      
Convertible Debt Issuances [Abstract]      
Debt instrument, original term   3 years  
Terminated Line of Credit   153mu_TerminatedLineofCredit
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility1Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
 
Line of Credit [Member] | Revolving Credit Facility 2 [Member]      
Convertible Debt Issuances [Abstract]      
Debt instrument, original term 5 years    
Line of Credit Facility, Maximum Borrowing Capacity 540us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
   
Line of Credit Facility, Current Borrowing Capacity 500us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
   
Line of Credit [Member] | Revolving Credit Facility 2 [Member] | Libor [Member] | Minimum [Member]      
Convertible Debt Issuances [Abstract]      
Margin on variable rate financing (in hundredths) 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Line of Credit [Member] | Revolving Credit Facility 2 [Member] | Libor [Member] | Maximum [Member]      
Convertible Debt Issuances [Abstract]      
Margin on variable rate financing (in hundredths) 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Loans Payable [Member]      
Long-term Debt, by Maturity [Abstract]      
Remainder of 2015 304us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
2016 290us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
2017 260us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
2018 552us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
2019 642us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
2020 and thereafter 3,556us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
Debt Instrument, Unamortized Discount (615)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
Notes Payable 4,989us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]      
Debt Instrument, Unamortized Discount $ (615)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember
   
[1] Weighted-average imputed rate of 4.3% and 4.3% as of December 4, 2014 and August 28, 2014, respectively.
[2] We have either the obligation or the option to pay cash for the aggregate amount due upon conversion for all of our convertible notes. Since it is our current intent to settle in cash the principal amount of all of our convertible notes upon conversion, the dilutive effect of such notes on earnings per share is computed under the treasury stock method.
[3] Since the closing price of our common stock for at least 20 trading days in the 30 trading day period ending on September 30, 2014 exceeded 130% of the conversion price per share, holders have the right to convert their notes at any time during the calendar quarter ended December 31, 2014. The closing price of our common stock also exceeded the thresholds for the calendar quarter ended December 31, 2014; therefore, these notes are convertible by the holders through March 31, 2015.
[4] The terms of our convertible notes give holders the right to require us to repurchase all or a portion of their notes at a date or dates earlier than the contractual maturities of the notes or upon the occurrence of certain events or circumstances.
[5] Holders have the right to convert all or a portion of their notes at a date or dates earlier than the contractual maturity if, during any calendar quarter, the closing price of our common stock for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter is more than 130% of the conversion price. As a result, as of December 4, 2014, holders of our 2032 Notes and 2033 Notes had the right to convert their notes.
[6] Based on our closing share price of $36.07 as of December 4, 2014.
[7] As a result of these notes being convertible at the option of the holder through December 31, 2014, and because the terms of these notes would require us to pay cash for the principal amount of any converted notes, amounts are classified as current.
[8] The original principal amount of $820 million accretes up to $917 million in November 2028 and $1.03 billion at maturity in 2043.