Name:	mu_AvailableForSaleSecuritiesNumberOfSharesReceivedInReverseStockSplit
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Data Type:	xbrli:sharesItemType
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Available-for-sale securities for which the issuer executed a reverse stock split. This element represents the number of shares returned in reverse stock split.

No definition available.

Name:	mu_AvailableForSaleSecuritiesReverseStockSplitConversionRatio
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Data Type:	xbrli:decimalItemType
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For the disposal group, including a component of the entity (discontinued operation), the net carrying value of assets sold and liabilities transferred.

No definition available.

Name:	mu_DisposalGroupIncludingDiscontinuedOperationNetCarryingValueTransferred
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

No definition available.

Name:	mu_DisposalGroupNotDiscontinuedOperationCostOfDisposedEntityTransactionCosts
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The number of ordinary shares received as partial consideration received in the disposition of the Japan Fab.

No definition available.

Name:	mu_DisposalGroupNotDiscontinuedOperationDivestitureAmountOfSharesReceived
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Data Type:	xbrli:sharesItemType
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The loss resulting from the write-down of the carrying value of certain tax assets classified within a disposal group, but one which is not further classified as a discontinued operation, to fair value. The loss is included in income taxes in the income statement.

No definition available.

Name:	mu_DisposalGroupNotDiscontinuedOperationLossOnWriteDownOfTaxAssets
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Details

Name:	mu_JapanFabricationFacilityAbstract
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The number of positions transferred to a thrid party during the period as a result of restructuring activities.

No definition available.

Name:	mu_RestructuringAndRelatedCostNumberOfPositionsTransferred
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Data Type:	xbrli:integerItemType
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Period Type:	duration

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

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Name:	us-gaap_AssetImpairmentCharges
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The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6516133

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- Details

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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

-Publisher FASB

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-Subparagraph (SAB TOPIC 5.P.4(b))

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-Subsection 3, 4

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The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

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

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