Name:	mu_AgreementToProvideReasonableEffortsInObtainingFinancingSubsequentToAcquisitionAmount
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Business Acquisition and Reorganization Plan Payments, Total Cash Payments

No definition available.

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Amount of cash paid to acquire the entity at closing.

No definition available.

Name:	mu_BusinessAcquisitionCostOfAcquiredEntityCashPaidAtClosing
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Balance Type:	credit
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The ownership percentage of a less than wholly owned subsidiary held by the acquired entity in a business combination. Upon close of the business acquision, the interest will transfer to the acquiror.

No definition available.

Name:	mu_BusinessAcquisitionEquityInterestHeldByAcquireeLessThanWhollyOwnedSubsidiaryOwnershipPercentage
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Business Combination, Cost of Acquired Entity, Increase (Decrease) Due to Changes in Foreign Currency Denominated Acquisition Price

No definition available.

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In a business combination completed through a step acquisition, this is the number of shares acquired.

No definition available.

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Derivative, Cost of Hedge Net of Cash Received From Sale of Options, Payments Within One Year of the balance sheet date

No definition available.

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Guarantor Obligations, Payment Guarantee Entered Into During Period, Amount

No definition available.

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Maximum exposure for potential payment guarantees of debtor-in-possession financing from third parties.

No definition available.

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Maximum exposure to provide a payment guarantee under certain circumstances or direct financing for capital expenditures.

No definition available.

Name:	mu_PaymentGuaranteeOrDirectFinancingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	mu_ReorganizationPaymentsByMaturityAbstract
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Amount of reorganization payments due in year eight following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearEight
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Amount of reorganization payments due in year five following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearFive
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Amount of reorganization payments due in year four following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearFour
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Amount of reorganization payments due in year seven following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearSeven
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Amount of reorganization payments due in year six following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearSix
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Amount of reorganization payments due in year three following the date of the latest balance sheet presented in the financial statements.

No definition available.

Name:	mu_ReorganizationPaymentYearThree
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Amount of cash to be paid after closing in satisfaction of the reorganization plan.

No definition available.

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Number of required annual payments in satisfaction of the reorganization plan.

No definition available.

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Data Type:	xbrli:decimalItemType
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Name:	mu_SharePurchaseAgreementAbstract
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Percentage of voting equity interests acquired in the business combination.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The average strike price on a group of foreign currency option contracts such as put options or call options.

No definition available.

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The strike price on the foreign currency option contract such as a put option or a call option.

No definition available.

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The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

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Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section S99

-Paragraph 1

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

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Aggregate notional amount of foreign currency derivatives to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

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-Section 50

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Aggregate notional amount of foreign currency derivatives to sell a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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The cash outflow associated with the purchase of noncontrolling interest during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section H