v2.4.1.9

Debt - Schedule of Long-term Debt (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified

3 Months Ended

6 Months Ended

3 Months Ended

Mar. 05, 2015

Mar. 05, 2015

Feb. 12, 2015

Dec. 02, 2014

Aug. 28, 2014

Feb. 03, 2015

Debt Instrument [Line Items]

Current debt

$ 1,199,000,000us-gaap_DebtCurrent

$ 1,199,000,000us-gaap_DebtCurrent

$ 1,638,000,000us-gaap_DebtCurrent

Long-term debt

5,519,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations

5,519,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations

4,955,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations

Debt

6,718,000,000us-gaap_DebtAndCapitalLeaseObligations

6,718,000,000us-gaap_DebtAndCapitalLeaseObligations

6,593,000,000us-gaap_DebtAndCapitalLeaseObligations

Convertible Debt Issuances [Abstract]

Share Price (in dollars per share)

$ 29.28us-gaap_SharePrice

$ 29.28us-gaap_SharePrice

Capital lease obligations [Member]

Debt Instrument [Line Items]

Current debt

369,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

369,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

323,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

Long-term debt

576,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

576,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

588,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

Debt

945,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

945,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

911,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

^[1]

Effective interest rate (in hundredths)

3.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

3.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

4.30%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Capital Lease Obligations [Abstract]

Capital Lease Obligations Incurred

287,000,000us-gaap_CapitalLeaseObligationsIncurred
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Debt Instrument, Interest Rate, Effective Percentage, Incurred in Current Period

3.20%mu_DebtInstrumentInterestRateEffectivePercentageIncurredinCurrentPeriod
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Long-term Debt, by Maturity [Abstract]

Debt Instrument, Unamortized Discount

(77,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

(77,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]

Remainder of 2015

202,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

202,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

2016

340,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

340,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

2017

164,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

164,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

2018

122,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

122,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

2019

85,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

85,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

2020 and thereafter

109,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

109,000,000us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Debt Instrument, Unamortized Discount

(77,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

(77,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Capital Lease Obligations

945,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

945,000,000us-gaap_CapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Capital lease obligations [Member] | Sales leaseback transactions [Member]

Capital Lease Obligations [Abstract]

Capital Lease Obligations Incurred

254,000,000us-gaap_CapitalLeaseObligationsIncurred
/ us-gaap_DebtInstrumentAxis
= mu_SalesLeasebackTransactionsMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CapitalLeaseObligationsMember

Reorganization obligation [Member]

Debt Instrument [Line Items]

Current debt

157,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

157,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

192,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

Long-term debt

684,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

684,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

939,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

Debt

841,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

841,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

1,131,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

Effective interest rate (in hundredths)

6.25%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

6.25%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= mu_ReorganizationobligationMember

Secured Debt [Member] | 2019 senior notes

Debt Instrument [Line Items]

Current debt

92,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

92,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

92,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

Long-term debt

278,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

278,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

324,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

Debt

370,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

370,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_SecuredDebt4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember

416,000,000us-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

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

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

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Long-term debt

600,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

600,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

600,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Debt

600,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

600,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

600,000,000us-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

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

6.14%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2022Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Corporate bonds [Member] | 2023 senior notes [Member]

Debt Instrument [Line Items]

Current debt

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Long-term debt

1,000,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,000,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Debt

1,000,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,000,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

0us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Stated interest rate (in hundredths)

5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Effective interest rate (in hundredths)

5.43%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

5.43%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Unsecured Debt [Abstract]

Face Value of Debt

1,000,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Payments of Debt Issuance Costs

12,000,000us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Debt Instrument, Domestic Restricted Subsidiaries, Ownership Percentage by Parent

80.00%mu_DebtInstrumentDomesticRestrictedSubsidiariesOwnershipPercentagebyParent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

80.00%mu_DebtInstrumentDomesticRestrictedSubsidiariesOwnershipPercentagebyParent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Debt Instrument, Redemption Price, Percentage

105.25%us-gaap_DebtInstrumentRedemptionPricePercentage
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Corporate bonds [Member] | 2023 senior notes [Member] | Maximum [Member]

Unsecured Debt [Abstract]

Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds

35.00%mu_DebtInstrumentRedemptionPricePercentageofPrincipalAmountRedeemableUsingEquityOfferingProceeds
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2023Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember

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

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Long-term debt

1,150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,150,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

Debt

1,150,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,150,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_Unsecuredseniorcorporatedebtdue2025Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_CorporateDebtSecuritiesMember

1,150,000,000us-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

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

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

2,289,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

2,289,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Underlying Shares (in shares)

157mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

157mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Conversion value in excess of principal

2,334,000,000us-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

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

362,000,000us-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

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

0us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2031BMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

362,000,000us-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

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

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],[3]

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Long-term debt

314,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

314,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

314,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Debt

314,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

314,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

314,000,000us-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

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

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

357,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

357,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Underlying Shares (in shares)

37mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032CMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

37mu_DebtInstrumentConvertibleUnderlyingShares
/ 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

$ 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

730,000,000us-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],[3]

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Long-term debt

265,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

265,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

288,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Debt

265,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

265,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

288,000,000us-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

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

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

313,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

313,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Underlying Shares (in shares)

31mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2032DMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

31mu_DebtInstrumentConvertibleUnderlyingShares
/ 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

$ 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

604,000,000us-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

275,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

275,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

278,000,000us-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]

0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Debt

275,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

275,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

278,000,000us-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

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

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

294,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

294,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Underlying Shares (in shares)

27mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNotesDue2033EMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

27mu_DebtInstrumentConvertibleUnderlyingShares
/ 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

$ 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

492,000,000us-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

268,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

268,000,000us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

265,000,000us-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]

0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

0us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Debt

268,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

268,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2],[3]

265,000,000us-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

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

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

300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Underlying Shares (in shares)

27mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2033FMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

27mu_DebtInstrumentConvertibleUnderlyingShares
/ 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

$ 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

504,000,000us-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]

0us-gaap_DebtCurrent
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Long-term debt

642,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

642,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

636,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

Debt

642,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

642,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[2]

636,000,000us-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

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

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],[7]

Outstanding Principal

1,025,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[7]

1,025,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[7]

Underlying Shares (in shares)

35mu_DebtInstrumentConvertibleUnderlyingShares
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

35mu_DebtInstrumentConvertibleUnderlyingShares
/ 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

$ 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

4,000,000us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

^[6]

Debt Instrument Issued At A Discount, Original Principal Amount

820,000,000mu_DebtInstrumentIssuedAtADiscountOriginalPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

820,000,000mu_DebtInstrumentIssuedAtADiscountOriginalPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Debt Instrument, Scheduled Accreted Principal Amount

917,000,000mu_DebtInstrumentScheduledAccretedPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

917,000,000mu_DebtInstrumentScheduledAccretedPrincipalAmount
/ us-gaap_DebtInstrumentAxis
= mu_ConvertibleSeniorNoteDue2043GMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConvertibleDebtMember

Notes Payable, Other Payables [Member]

Debt Instrument [Line Items]

Current debt

38,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

38,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

126,000,000us-gaap_DebtCurrent
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

Long-term debt

10,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

10,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

116,000,000us-gaap_LongTermDebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

Debt

48,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

48,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

242,000,000us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

Stated interest rate (in hundredths)

2.634%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

2.634%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

Effective interest rate (in hundredths)

2.63%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

2.63%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_NotesPayableOtherPayablesMember

Line of Credit [Member] | Revolving Credit Facility 1 [Member]

Line of Credit Facility [Abstract]

Debt instrument, original term

3 years

Terminated Line of Credit

255,000,000mu_TerminatedLineofCredit
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility1Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit [Member] | Revolving Credit Facility 4 [Member]

Line of Credit Facility [Abstract]

Debt instrument, original term

5 years

Line of Credit Facility, Maximum Borrowing Capacity

750,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

750,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Percentage Of Collateral To Face Value Of Issued And Ouststanding Credit Facility

80.00%mu_PercentageOfCollateralToFaceValueOfIssuedAndOuststandingCreditFacility
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

80.00%mu_PercentageOfCollateralToFaceValueOfIssuedAndOuststandingCreditFacility
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit Facility, Current Borrowing Capacity

704,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

704,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit [Member] | Revolving Credit Facility 4 [Member] | Libor [Member] | Minimum [Member]

Line of Credit Facility [Abstract]

Margin on variable rate financing (in hundredths)

1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ 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 4 [Member] | Libor [Member] | Maximum [Member]

Line of Credit Facility [Abstract]

Margin on variable rate financing (in hundredths)

2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility4Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember

Line of Credit [Member] | Revolving Credit Facility 2 [Member]

Line of Credit Facility [Abstract]

Debt instrument, original term

3 years

Terminated Line of Credit

153,000,000mu_TerminatedLineofCredit
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility2Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit [Member] | Revolving Credit Facility 3 [Member]

Line of Credit Facility [Abstract]

Debt instrument, original term

5 years

Line of Credit Facility, Maximum Borrowing Capacity

540,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

540,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit Facility, Current Borrowing Capacity

473,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

473,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember

Line of Credit [Member] | Revolving Credit Facility 3 [Member] | Libor [Member] | Minimum [Member]

Line of Credit Facility [Abstract]

Margin on variable rate financing (in hundredths)

1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ 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 3 [Member] | Libor [Member] | Maximum [Member]

Line of Credit Facility [Abstract]

Margin on variable rate financing (in hundredths)

1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mu_RevolvingCreditFacility3Member
/ 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

65,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

65,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

2016

287,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

287,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

2017

258,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

258,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

2018

551,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

551,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

2019

643,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

643,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

2020 and thereafter

4,561,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

4,561,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

Debt Instrument, Unamortized Discount

(592,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

(592,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

Notes Payable

5,773,000,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

5,773,000,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]

Debt Instrument, Unamortized Discount

$ (592,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

$ (592,000,000)us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LoansPayableMember

[1]	Weighted-average imputed rate of 3.9% and 4.3% as of March 5, 2015 and August 28, 2014, respectively.
[2]	We have either the obligation or the option to pay cash for the principal 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 December 31, 2014 exceeded 130% of the conversion price per share, holders had the right to convert their notes at any time during the calendar quarter ended March 31, 2015. The closing price of our common stock also exceeded the thresholds for the calendar quarter ended March 31, 2015; therefore, these notes are convertible by the holders through June 30, 2015. The 2033 Notes are classified as current because the terms of these notes would require us to pay cash for the principal amount of any converted notes.
[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 prior to the contractual maturities of the notes.
[5]	Holders have the right to convert all or a portion of their notes at a date prior to 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. The closing price of our common stock exceeded the thresholds for the calendar quarter ended March 31, 2015; therefore, our 2032 Notes and 2033 Notes notes are convertible by the holders through June 30, 2015.
[6]	Based on our closing share price of $29.28 as of March 5, 2015.
[7]	The original principal amount of $820 million accretes up to $917 million in November 2028 and $1.03 billion at maturity in 2043.

X

- Details

Name:	mu_ConvertibleDebtIssuancesAbstract
Namespace Prefix:	mu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of equity instruments underlying a convertible debt instrument.

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentConvertibleUnderlyingShares
Namespace Prefix:	mu_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Debt Instrument, Domestic Restricted Subsidiaries, Ownership Percentage by Parent

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentDomesticRestrictedSubsidiariesOwnershipPercentagebyParent
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

For debt incurred in current period, effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentInterestRateEffectivePercentageIncurredinCurrentPeriod
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For debt issued at a discount, the original principal amount of the debt to be accreted up to the face value of the note at maturity or earlier redemption.

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentIssuedAtADiscountOriginalPrincipalAmount
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Earliest date before maturity when the holds can put the outstanding debt instrument for repayment, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentPutDateEarliest
Namespace Prefix:	mu_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentRedemptionPricePercentageofPrincipalAmountRedeemableUsingEquityOfferingProceeds
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

With respect to discounted debt liabilities, the scheduled redemption value at a given point in time.

+ References

No definition available.

+ Details

Name:	mu_DebtInstrumentScheduledAccretedPrincipalAmount
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

percentage of collateral to face value of issued and ouststanding credit facility

+ References

No definition available.

+ Details

Name:	mu_PercentageOfCollateralToFaceValueOfIssuedAndOuststandingCreditFacility
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Terminated Line of Credit

+ References

No definition available.

+ Details

Name:	mu_TerminatedLineofCredit
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_CapitalLeaseObligationsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The increase during the period in capital lease obligations due to entering into new capital leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_CapitalLeaseObligationsIncurred
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of minimum lease payments for capital leases due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.13,16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtAndCapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5

+ Details

Name:	us-gaap_DebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

Name:	us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Price of the entity's common stock which would be required to be attained for the conversion feature embedded in the debt instrument to become effective.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleStockPriceTrigger
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdTradingDays
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentRedemptionPricePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

+ Details

Name:	us-gaap_LongTermDebtAndCapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_LongTermDebtByMaturityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

Name:	us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_UnsecuredLongtermDebtCurrentAndNoncurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mu_ReorganizationobligationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LoansPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableOtherPayablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: