<?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-20210316.xsd" xlink:type="simple"/>
    <context id="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000723125</identifier>
        </entity>
        <period>
            <startDate>2021-03-16</startDate>
            <endDate>2021-03-16</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY180L2ZyYWc6YmU2YjhlNTJkMjJjNDAzMjhmMDg5MWZkZmE1NWQ3OTkvdGFibGU6YWNiZTZiNTljMzZiNDRiYThjMDE3OGUxYmMzNDU2Y2YvdGFibGVyYW5nZTphY2JlNmI1OWMzNmI0NGJhOGMwMTc4ZTFiYzM0NTZjZl8wLTEtMS0xLTA_6e93ff70-a071-4ea7-9869-963f9fb36ef9">0000723125</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY180L2ZyYWc6YmU2YjhlNTJkMjJjNDAzMjhmMDg5MWZkZmE1NWQ3OTkvdGFibGU6YWNiZTZiNTljMzZiNDRiYThjMDE3OGUxYmMzNDU2Y2YvdGFibGVyYW5nZTphY2JlNmI1OWMzNmI0NGJhOGMwMTc4ZTFiYzM0NTZjZl8yLTEtMS0xLTA_2de4bd05-80c5-43f4-9305-e06aab924407">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQ1_e9a7267f-fbc5-424a-8812-c3613af32533">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQ2_0b931b4f-bca7-4796-b06c-ab89d4c78eb8">2021-03-16</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MmUyNGMxZDNlYmQ5NGIzZDk0MThiM2FjODkyZDg3YTcvdGFibGVyYW5nZToyZTI0YzFkM2ViZDk0YjNkOTQxOGIzYWM4OTJkODdhN18wLTAtMS0xLTA_9ea64d98-de26-4be2-a3a9-1520cefc7065">MICRON TECHNOLOGY, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MTUyMDYwOGZkYjU3NDQ5Yzg4NTNlZDAyZjhmMWFhYWYvdGFibGVyYW5nZToxNTIwNjA4ZmRiNTc0NDljODg1M2VkMDJmOGYxYWFhZl8wLTAtMS0xLTA_a1b99e6d-f425-4575-984c-e54363aedfcf">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MTUyMDYwOGZkYjU3NDQ5Yzg4NTNlZDAyZjhmMWFhYWYvdGFibGVyYW5nZToxNTIwNjA4ZmRiNTc0NDljODg1M2VkMDJmOGYxYWFhZl8wLTItMS0xLTA_81e1de08-14e0-4270-b4b7-92e2d4dceb9e">1-10658</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MTUyMDYwOGZkYjU3NDQ5Yzg4NTNlZDAyZjhmMWFhYWYvdGFibGVyYW5nZToxNTIwNjA4ZmRiNTc0NDljODg1M2VkMDJmOGYxYWFhZl8wLTQtMS0xLTA_3bae4b9e-2b30-42b0-8aed-1d7c0c767003">75-1618004</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjQ4NDk2MWU1OWQ4NGUwYTkyMGU4ZGY1ZDU2MmFmY2YvdGFibGVyYW5nZTpiNDg0OTYxZTU5ZDg0ZTBhOTIwZThkZjVkNTYyYWZjZl8wLTAtMS0xLTA_38db28c9-07c5-40e8-b84a-b46a6fe5d9e9">8000 South Federal Way</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjQ4NDk2MWU1OWQ4NGUwYTkyMGU4ZGY1ZDU2MmFmY2YvdGFibGVyYW5nZTpiNDg0OTYxZTU5ZDg0ZTBhOTIwZThkZjVkNTYyYWZjZl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpiZDRjYTc3MjM4NzA0MzVjYWQyMDMyZWU1M2E1OGQ5Zl80_e744b2dc-a842-4749-bc9d-e83b5fa17598">Boise</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjQ4NDk2MWU1OWQ4NGUwYTkyMGU4ZGY1ZDU2MmFmY2YvdGFibGVyYW5nZTpiNDg0OTYxZTU5ZDg0ZTBhOTIwZThkZjVkNTYyYWZjZl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpiZDRjYTc3MjM4NzA0MzVjYWQyMDMyZWU1M2E1OGQ5Zl84_fd56df16-6119-4406-b021-fbc771abd0d1">ID</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjQ4NDk2MWU1OWQ4NGUwYTkyMGU4ZGY1ZDU2MmFmY2YvdGFibGVyYW5nZTpiNDg0OTYxZTU5ZDg0ZTBhOTIwZThkZjVkNTYyYWZjZl8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpiZDRjYTc3MjM4NzA0MzVjYWQyMDMyZWU1M2E1OGQ5Zl8xMg_4002b62d-efd5-4e30-934d-6c128273658f">83716</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MjBjNTVhOTY0NmQzNDUyMThhMjViY2I4MTQxZWU0ODQvdGFibGVyYW5nZToyMGM1NWE5NjQ2ZDM0NTIxOGEyNWJjYjgxNDFlZTQ4NF8wLTAtMS0xLTAvdGV4dHJlZ2lvbjo2NDNhYzQ0MWZjYjM0NzBlODQ1OGU2ZjMyNzk3MzE0MF80_f6f54a3a-d39e-40f9-b7f4-1a43e2021795">208</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6MjBjNTVhOTY0NmQzNDUyMThhMjViY2I4MTQxZWU0ODQvdGFibGVyYW5nZToyMGM1NWE5NjQ2ZDM0NTIxOGEyNWJjYjgxNDFlZTQ4NF8wLTAtMS0xLTAvdGV4dHJlZ2lvbjo2NDNhYzQ0MWZjYjM0NzBlODQ1OGU2ZjMyNzk3MzE0MF83_635f87ec-effe-491e-aa3c-7518bc320121">368-4000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQ4_9f8982b1-38a4-433e-b383-9f54a9235432">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQ5_ed1cfdee-e820-4b89-addd-9383e431c244">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQy_1e3726ff-1557-485a-b0e6-4c331cf435fb">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQz_92f051c0-9257-46bb-bbca-6e9632d6ad1e">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjFkYzM5YTg1YjdjNGU0YmFlOGIxZWI3NWQ4ZjM4NDAvdGFibGVyYW5nZTpiMWRjMzlhODViN2M0ZTRiYWU4YjFlYjc1ZDhmMzg0MF8xLTAtMS0xLTA_fadc4cee-9f1a-4d85-9e4a-7660464d4a97">Common Stock, par value $0.10 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjFkYzM5YTg1YjdjNGU0YmFlOGIxZWI3NWQ4ZjM4NDAvdGFibGVyYW5nZTpiMWRjMzlhODViN2M0ZTRiYWU4YjFlYjc1ZDhmMzg0MF8xLTItMS0xLTA_774c9932-961b-4629-b8ae-4f5b30f45ca9">MU</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGFibGU6YjFkYzM5YTg1YjdjNGU0YmFlOGIxZWI3NWQ4ZjM4NDAvdGFibGVyYW5nZTpiMWRjMzlhODViN2M0ZTRiYWU4YjFlYjc1ZDhmMzg0MF8xLTQtMS0xLTA_58ef6512-3293-4dff-97e4-07f1c82b2b52">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="ib4c9a44c42e84586a59cc5463c8b6838_D20210316-20210316"
      id="id3VybDovL2RvY3MudjEvZG9jOmQwYmUyNDdhYjEwZjRmNDY4NmVhM2M4ZmJhY2FkZGZjL3NlYzpkMGJlMjQ3YWIxMGY0ZjQ2ODZlYTNjOGZiYWNhZGRmY18xL2ZyYWc6N2E4ODYxZWUxZTA5NDM0Y2E3MDg4NzRmZTc5ODBkNTIvdGV4dHJlZ2lvbjo3YTg4NjFlZTFlMDk0MzRjYTcwODg3NGZlNzk4MGQ1Ml8yNTQ0_4e84944c-ad46-4d2e-880d-ce77d5d22f57">false</dei:EntityEmergingGrowthCompany>
</xbrl>
