Numonyx Holdings B.V. (Details) (Numonyx Holdings BV [Member]) In Millions	May 07, 2010
Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Equity units issued for acquisition of Numonyx (in shares)	137.7
Restricted stock units [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Equity units issued for acquisition of Numonyx (in shares)	4.8

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mu_BusinessAcquisitionEquityInterestIssuedOrIssuableNumberOfSharesIssuedOnAcquisitionDate

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xbrli:sharesItemType

Balance Type:

na

Period Type:

instant