v2.4.1.9

Debt - Extinguishment of Debt (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 05, 2015 | Feb. 27, 2014 | Mar. 05, 2015 | Feb. 27, 2014
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | $ 723mu_DebtInstrumentIncreaseDecreaseNetPrincipal |  |
Debt Instrument, Increase (Decrease), Net |  |  | 482us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet |  |
Cash, Increase (Decrease), Net Change As A Result Of Debt Restructure Activities |  |  | 334mu_CashIncreaseDecreaseNetChangeAsAResultOfDebtRestructureActivities |  |
Debt Instrument, Decrease in Equity |  |  | (106)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent |  |
(Loss) gain on restructure of debt | 0mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet | (80)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet | (30)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet |  | (155)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet
Convertible Notes Payable [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (120)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Increase (Decrease), Net |  |  | (368)us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (407)mu_RepaymentstoSettleLongtermDebtObligationsGross / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | (14)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Volume-weighted-average price of our common stock period of consecutive trading days (in days) |  |  | 20mu_DerivativeTermofContractConsecutiveTradingDays / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 112us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Face value of debt extinguished |  |  |  |  | 351us-gaap_ExtinguishmentOfDebtAmount / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Convertible Notes Payable [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (36)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Extinguishment of debt carrying amount |  |  | (30)mu_ExtinguishmentOfDebtCarryingAmount / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (125)mu_RepaymentstoSettleLongtermDebtObligationsGross / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | (92)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Face value of debt extinguished |  |  |  |  | 164us-gaap_ExtinguishmentOfDebtAmount / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Convertible Notes Payable [Member] | Exchanged [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 49us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ExchangedMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Face value of debt extinguished |  |  |  |  | 440us-gaap_ExtinguishmentOfDebtAmount / mu_DebtRestructuringTypeAxis = mu_ExchangedMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Convertible Notes Payable [Member] | 2031B convertible senior notes [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (114)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Increase (Decrease), Net |  |  | (362)us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (389)mu_RepaymentstoSettleLongtermDebtObligationsGross / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | 0mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Convertible Notes Payable [Member] | 2032C convertible senior notes [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (5)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Extinguishment of debt carrying amount |  |  | (4)mu_ExtinguishmentOfDebtCarryingAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (18)mu_RepaymentstoSettleLongtermDebtObligationsGross / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | (13)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Convertible Notes Payable [Member] | 2032D convertible senior notes [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (31)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Extinguishment of debt carrying amount |  |  | (26)mu_ExtinguishmentOfDebtCarryingAmount / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (107)mu_RepaymentstoSettleLongtermDebtObligationsGross / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | (79)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Convertible Notes Payable [Member] | 2033E convertible senior notes [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (6)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Increase (Decrease), Net |  |  | (6)us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (18)mu_RepaymentstoSettleLongtermDebtObligationsGross / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Debt Instrument, Decrease in Equity |  |  | (14)mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember |  |
Corporate bonds [Member] | 2023 senior notes [Member] | Debt Issuance [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | 1,000mu_DebtInstrumentIncreaseDecreaseNetPrincipal / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2023Member / mu_DebtRestructuringTypeAxis = mu_DebtIssuanceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |
Debt Instrument, Increase (Decrease), Net |  |  | 1,000us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2023Member / mu_DebtRestructuringTypeAxis = mu_DebtIssuanceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |
Proceeds from Debt, Net of Issuance Costs |  |  | 988us-gaap_ProceedsFromDebtNetOfIssuanceCosts / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2023Member / mu_DebtRestructuringTypeAxis = mu_DebtIssuanceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |
Debt Instrument, Decrease in Equity |  |  | 0mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2023Member / mu_DebtRestructuringTypeAxis = mu_DebtIssuanceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember |  |
Notes Payable, Other Payables [Member] | Prepayment [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Debt Instrument, Increase (Decrease), Net Principal |  |  | (121)mu_DebtInstrumentIncreaseDecreaseNetPrincipal / mu_DebtRestructuringTypeAxis = mu_PrepaymentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |
Extinguishment of debt carrying amount |  |  | (120)mu_ExtinguishmentOfDebtCarryingAmount / mu_DebtRestructuringTypeAxis = mu_PrepaymentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |
Repayments to Settle Long-term Debt Obligations, Gross |  |  | (122)mu_RepaymentstoSettleLongtermDebtObligationsGross / mu_DebtRestructuringTypeAxis = mu_PrepaymentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |
Debt Instrument, Decrease in Equity |  |  | 0mu_DebtInstrumentIncreaseDecreaseNetEquityComponent / mu_DebtRestructuringTypeAxis = mu_PrepaymentMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |  |
Other Non-Operating Income Expense Net [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (30)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember | [1] |
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (22)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 106us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (3)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 11us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | Exchanged [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 38us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ExchangedMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | 2031B convertible senior notes [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (24)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2031BMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | 2032C convertible senior notes [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (1)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032CMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | 2032D convertible senior notes [Member] | Repurchase [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (2)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2032DMember / mu_DebtRestructuringTypeAxis = mu_RepurchaseMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Other Non-Operating Income Expense Net [Member] | Convertible Notes Payable [Member] | 2033E convertible senior notes [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | 2mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033EMember / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember | [1] |
Other Non-Operating Income Expense Net [Member] | Corporate bonds [Member] | 2023 senior notes [Member] | Debt Issuance [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | 0mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / us-gaap_DebtInstrumentAxis = mu_Unsecuredseniorcorporatedebtdue2023Member / mu_DebtRestructuringTypeAxis = mu_DebtIssuanceMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_CorporateDebtSecuritiesMember | [1] |
Other Non-Operating Income Expense Net [Member] | Notes Payable, Other Payables [Member] | Prepayment [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
(Loss) gain on restructure of debt |  |  | (5)mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet / mu_DebtRestructuringTypeAxis = mu_PrepaymentMember / us-gaap_IncomeStatementLocationAxis = mu_OtherNonOperatingIncomeExpenseNetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember | [1] |
Interest Expense [Member] | Convertible Notes Payable [Member] | Conversion And Settlement [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Interest and debt expense incurred through restructure of debt |  |  |  |  | 6us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ConversionAndSettlementMember / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
Interest Expense [Member] | Convertible Notes Payable [Member] | Exchanged [Member] |  |  |  |  |
Extinguishment of Debt [Line Items] |  |  |  |  |
Interest and debt expense incurred through restructure of debt |  |  |  |  | $ 11us-gaap_InterestAndDebtExpense / mu_DebtRestructuringTypeAxis = mu_ExchangedMember / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleNotesPayableMember
[1] | Included in other non-operating expense.

X
- Definition Cash, increase (decrease), net change as a result of debt restructure activities + References No definition available. + Details
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Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net increase or decrease in the carrying amount of the equity component debt instrument for the period. + References No definition available. + Details
Name: | mu_DebtInstrumentIncreaseDecreaseNetEquityComponent
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net increase or decrease in the principal amount of the debt instrument for the period. + References No definition available. + Details
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Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of consecutive trading days of volume-weighted-average price of our common stock for derivative debt liability settlement valuations. + References No definition available. + Details
Name: | mu_DerivativeTermofContractConsecutiveTradingDays
Namespace Prefix: | mu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount of debt extinguished. + References No definition available. + Details
Name: | mu_ExtinguishmentOfDebtCarryingAmount
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total loss on extinguishment of debt for both the difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity and the amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References No definition available. + Details
Name: | mu_GainsLossesOnExtinguishmentOfDebtAndDerivativeGainLossOnDerivativeNet
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gross cash outflow for repayment of debt obligations, those having an original maturity of one year or more, including a) principle amount b) fair value of equity component of convertible debt c) gain/losses on repayment d) make-whole interest e) other conversion features or f) any combination of the aforementioned components. + References No definition available. + Details
Name: | mu_RepaymentstoSettleLongtermDebtObligationsGross
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net increase or decrease in the carrying amount of the debt instrument for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 + Details
Name: | us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Interest and debt related expenses associated with nonoperating financing activities of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestAndDebtExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References No definition available. + Details
Name: | us-gaap_ProceedsFromDebtNetOfIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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