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Equity - Shareholder Rights Agreement (Details) | Mar. 02, 2017 right_per_share
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Equity [Abstract] |
Shareholder Rights Plan, Purchase Discount Rights Received (per share) | 1

X
- Definition Number of share purchase rights received for each common share held (as of a record date) which become exercisable upon change of ownership triggering events. + References No definition available. + Details
Name: | mu_ShareholderRightsAgreementPurchaseDiscountRightsReceivedRatio
Namespace Prefix: | mu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration