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 | $ 1,168 us-gaap_DebtCurrent |  |  | $ 1,638 us-gaap_DebtCurrent |
Long-term debt | 4,608 us-gaap_LongTermDebtAndCapitalLeaseObligations |  |  | 4,955 us-gaap_LongTermDebtAndCapitalLeaseObligations |
Debt | 5,776 us-gaap_DebtAndCapitalLeaseObligations |  |  | 6,593 us-gaap_DebtAndCapitalLeaseObligations |
Convertible Debt Issuances [Abstract] |  |  |  |  |
Share Price (in dollars per share) | $ 36.07 us-gaap_SharePrice |  |  |  |
Reorganization obligation [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Current debt | 169 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = mu_ReorganizationobligationMember |  |  | 192 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = mu_ReorganizationobligationMember |
Long-term debt | 828 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = mu_ReorganizationobligationMember |  |  | 939 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = mu_ReorganizationobligationMember |
Debt | 997 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = mu_ReorganizationobligationMember |  |  | 1,131 us-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 | 315 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember | [1] |  | 323 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember | [1]
Long-term debt | 472 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember | [1] |  | 588 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember | [1]
Debt | 787 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember | [1] |  | 911 us-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 | 247 us-gaap_CapitalLeasesFutureMinimumPaymentsRemainderOfFiscalYear / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
2016 | 295 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
2017 | 98 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
2018 | 56 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
2019 | 52 us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
2020 and thereafter | 110 us-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 | 787 us-gaap_CapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_CapitalLeaseObligationsMember |  |  |  |
Secured Debt [Member] | 2019 senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Current debt | 92 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_SecuredDebt4Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  | 92 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_SecuredDebt4Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |
Long-term debt | 324 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_SecuredDebt4Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  | 324 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_SecuredDebt4Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |
Debt | 416 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_SecuredDebt4Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SecuredDebtMember |  |  | 416 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |
Long-term debt | 600 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 600 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |
Debt | 600 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2022Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 600 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |
Long-term debt | 1,150 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 1,150 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |
Debt | 1,150 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2025Member / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |  | 1,150 us-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 | 2,289 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Shares issuable upon conversion (in shares) | 157 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion value in excess of principal | 3,405 us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion rights, minimum number of trading days (in days) | 20 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  | 362 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |
Debt | 0 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  | 362 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Long-term debt | 312 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 314 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Debt | 312 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 314 us-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 | 357 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Shares issuable upon conversion (in shares) | 37 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share (in dollars per share) | $ 9.63 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share threshold (in dollars per share) | $ 12.52 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [5] |  |  |
Conversion value in excess of principal | 982 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Long-term debt | 264 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 288 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Debt | 264 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3] |  | 288 us-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 | 313 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Shares issuable upon conversion (in shares) | 31 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share (in dollars per share) | $ 9.98 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share threshold (in dollars per share) | $ 12.97 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [5] |  |  |
Conversion value in excess of principal | 816 us-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 | 273 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 278 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Debt | 273 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 278 us-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 | 294 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Shares issuable upon conversion (in shares) | 27 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share (in dollars per share) | $ 10.93 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share threshold (in dollars per share) | $ 14.21 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [5] |  |  |
Conversion value in excess of principal | 674 us-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 | 267 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 265 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Debt | 267 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2],[3],[7] |  | 265 us-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 | 300 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Shares issuable upon conversion (in shares) | 27 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share (in dollars per share) | $ 10.93 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share threshold (in dollars per share) | $ 14.21 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2033FMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [5] |  |  |
Conversion value in excess of principal | 690 us-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 | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2] |  | 0 us-gaap_DebtCurrent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Long-term debt | 639 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2] |  | 636 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2]
Debt | 639 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [2] |  | 636 us-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 | 1,025 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [8] |  |  |
Shares issuable upon conversion (in shares) | 35 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share (in dollars per share) | $ 29.16 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion price per share threshold (in dollars per share) | $ 37.91 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Conversion value in excess of principal | 243 us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | [6] |  |  |
Debt Instrument Issued At A Discount, Original Principal Amount | 820 mu_DebtInstrumentIssuedAtADiscountOriginalPrincipalAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Debt Instrument, Scheduled Accreted Principal Amount | 917 mu_DebtInstrumentScheduledAccretedPrincipalAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNoteDue2043GMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember |  |  |  |
Notes Payable, Other Payables [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Current debt | 52 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  | 126 us-gaap_DebtCurrent / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Long-term debt | 19 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  | 116 us-gaap_LongTermDebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
Debt | 71 us-gaap_DebtAndCapitalLeaseObligations / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |  | 242 us-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 |  |  | 153 mu_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 | 540 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = mu_RevolvingCreditFacility2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember |  |  |  |
Line of Credit Facility, Current Borrowing Capacity | 500 us-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 | 304 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
2016 | 290 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
2017 | 260 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
2018 | 552 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
2019 | 642 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
2020 and thereafter | 3,556 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
Debt Instrument, Unamortized Discount | (615)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_LongtermDebtTypeAxis = us-gaap_LoansPayableMember |  |  |  |
Notes Payable | 4,989 us-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.

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