<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="mu-20210215.xsd" xlink:type="simple"/>
    <context id="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000723125</identifier>
        </entity>
        <period>
            <startDate>2021-02-15</startDate>
            <endDate>2021-02-15</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl80L2ZyYWc6OWVmZGEzNGE2MzNlNDk3OGIzN2JkNTliZTY0YTllNTEvdGFibGU6Y2JjNDhjMmY2MjcwNDliYzhjZDNjYjljNzhjZWIyZTEvdGFibGVyYW5nZTpjYmM0OGMyZjYyNzA0OWJjOGNkM2NiOWM3OGNlYjJlMV8xLTEtMS0xLTA_6e47582a-54ea-47f9-94ce-acfad6b32e9d">0000723125</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl80L2ZyYWc6OWVmZGEzNGE2MzNlNDk3OGIzN2JkNTliZTY0YTllNTEvdGFibGU6Y2JjNDhjMmY2MjcwNDliYzhjZDNjYjljNzhjZWIyZTEvdGFibGVyYW5nZTpjYmM0OGMyZjYyNzA0OWJjOGNkM2NiOWM3OGNlYjJlMV8zLTEtMS0xLTA_d9b1c6f2-933c-4de0-8c98-13ffcfc66b56">false</dei:AmendmentFlag>
    <dei:CurrentFiscalYearEndDate
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl80L2ZyYWc6OWVmZGEzNGE2MzNlNDk3OGIzN2JkNTliZTY0YTllNTEvdGFibGU6Y2JjNDhjMmY2MjcwNDliYzhjZDNjYjljNzhjZWIyZTEvdGFibGVyYW5nZTpjYmM0OGMyZjYyNzA0OWJjOGNkM2NiOWM3OGNlYjJlMV80LTEtMS0xLTA_341df140-60f3-4173-8c41-e0ec85bee4f4">--09-02</dei:CurrentFiscalYearEndDate>
    <dei:DocumentType
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTI0_ee3e1bac-3b00-43c7-b166-0867eb75ca35">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N18zMjk4NTM0ODkyNDYw_5e07930f-4c6a-4e7c-9e17-4d96954de476">2021-02-15</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NThlNDUzMzc5NDYyNDlhZDg4MmU2ZDYxMmE5ZDYzOTcvdGFibGVyYW5nZTo1OGU0NTMzNzk0NjI0OWFkODgyZTZkNjEyYTlkNjM5N18wLTAtMS0xLTA_f54c980f-4f41-4ac3-8102-4041f61738fe">MICRON TECHNOLOGY, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NGRiMGIwNWY3OGYwNDI0ZWExYzA0ZGU4Mjg2YTc0M2MvdGFibGVyYW5nZTo0ZGIwYjA1Zjc4ZjA0MjRlYTFjMDRkZTgyODZhNzQzY18wLTAtMS0xLTA_4b32ae93-c325-45bd-b170-07bf935bff91">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NGRiMGIwNWY3OGYwNDI0ZWExYzA0ZGU4Mjg2YTc0M2MvdGFibGVyYW5nZTo0ZGIwYjA1Zjc4ZjA0MjRlYTFjMDRkZTgyODZhNzQzY18wLTItMS0xLTA_46aff328-d5f3-41a5-92fd-2e92a78b0219">1-10658</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NGRiMGIwNWY3OGYwNDI0ZWExYzA0ZGU4Mjg2YTc0M2MvdGFibGVyYW5nZTo0ZGIwYjA1Zjc4ZjA0MjRlYTFjMDRkZTgyODZhNzQzY18wLTQtMS0xLTA_7cf527c2-c95a-42da-8759-fdc65cd12339">75-1618004</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6YjViMTFmODE1YzkyNDU4YTlhNTczYWM0NzcxNjE1ZjIvdGFibGVyYW5nZTpiNWIxMWY4MTVjOTI0NThhOWE1NzNhYzQ3NzE2MTVmMl8wLTAtMS0xLTA_e9e7c675-79de-4edf-80cb-93e65921f462">8000 South Federal Way</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6YjViMTFmODE1YzkyNDU4YTlhNTczYWM0NzcxNjE1ZjIvdGFibGVyYW5nZTpiNWIxMWY4MTVjOTI0NThhOWE1NzNhYzQ3NzE2MTVmMl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjo2NjE3ZmEzNDNjNzc0ZThhYmM3NGE4MjM1MWNhZWIwYV80_9554671b-7099-4cc7-8f90-477176b017a4">Boise</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6YjViMTFmODE1YzkyNDU4YTlhNTczYWM0NzcxNjE1ZjIvdGFibGVyYW5nZTpiNWIxMWY4MTVjOTI0NThhOWE1NzNhYzQ3NzE2MTVmMl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjo2NjE3ZmEzNDNjNzc0ZThhYmM3NGE4MjM1MWNhZWIwYV84_5b352b37-bc34-4ec7-9ea6-5d9da820fe30">ID</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6YjViMTFmODE1YzkyNDU4YTlhNTczYWM0NzcxNjE1ZjIvdGFibGVyYW5nZTpiNWIxMWY4MTVjOTI0NThhOWE1NzNhYzQ3NzE2MTVmMl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjo2NjE3ZmEzNDNjNzc0ZThhYmM3NGE4MjM1MWNhZWIwYV8xMg_bdc23c68-e48f-4b55-9465-b830f8e2ec52">83716</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6Y2E2YWNhYzBjMzM1NDM3OTk4MTJiM2RlYTk0ODQwMTkvdGFibGVyYW5nZTpjYTZhY2FjMGMzMzU0Mzc5OTgxMmIzZGVhOTQ4NDAxOV8wLTAtMS0xLTAvdGV4dHJlZ2lvbjowYTM4ZWEwM2Y4OGE0ZTIyYWNkYzg4MmZjZmM0YzA2MV80_4eab4d06-20a9-4148-b43d-392d2532e0df">208</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6Y2E2YWNhYzBjMzM1NDM3OTk4MTJiM2RlYTk0ODQwMTkvdGFibGVyYW5nZTpjYTZhY2FjMGMzMzU0Mzc5OTgxMmIzZGVhOTQ4NDAxOV8wLTAtMS0xLTAvdGV4dHJlZ2lvbjowYTM4ZWEwM2Y4OGE0ZTIyYWNkYzg4MmZjZmM0YzA2MV83_fbad5cbb-6b83-4459-82ca-c315c7732eb1">368-4000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTIx_9ac02570-a414-471e-a55b-f22b22486c1d">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTI3_79394cd4-1609-43e6-a624-06269e34fbef">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTIy_7a93ea47-ed2b-4185-8281-813d710e66d3">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTIz_cf24ef1b-9fd7-495c-87a9-dfaf5ef7cf9d">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NWRkZTA5ZGZlYjk2NGNjNTg1MTc1ZjUxMDVhNmIyYTYvdGFibGVyYW5nZTo1ZGRlMDlkZmViOTY0Y2M1ODUxNzVmNTEwNWE2YjJhNl8xLTAtMS0xLTA_9f323973-9510-4acc-8d1a-e7efb5bdb1d0">Common Stock, par value $0.10 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NWRkZTA5ZGZlYjk2NGNjNTg1MTc1ZjUxMDVhNmIyYTYvdGFibGVyYW5nZTo1ZGRlMDlkZmViOTY0Y2M1ODUxNzVmNTEwNWE2YjJhNl8xLTItMS0xLTA_60eced7c-e377-489c-a437-12de0ffe4997">MU</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGFibGU6NWRkZTA5ZGZlYjk2NGNjNTg1MTc1ZjUxMDVhNmIyYTYvdGFibGVyYW5nZTo1ZGRlMDlkZmViOTY0Y2M1ODUxNzVmNTEwNWE2YjJhNl8xLTQtMS0xLTA_1d9c2095-3da8-4b0d-a215-bc6cfe52e739">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="i18fc9dba68654d20bb7f630001aa53a3_D20210215-20210215"
      id="id3VybDovL2RvY3MudjEvZG9jOjA1YWY0ZTFhYmM2ODRkOWJiYTZlN2MzZWUwOTRiNmNmL3NlYzowNWFmNGUxYWJjNjg0ZDliYmE2ZTdjM2VlMDk0YjZjZl8xL2ZyYWc6YzEzMTQ1ZmEzYTAyNGJiMGIyOTBjMDU0MDY5OGYzODcvdGV4dHJlZ2lvbjpjMTMxNDVmYTNhMDI0YmIwYjI5MGMwNTQwNjk4ZjM4N180NTI4_b60a2cb4-a6f9-40de-969c-1aa37a62e711">false</dei:EntityEmergingGrowthCompany>
</xbrl>
