<?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-20210107.xsd" xlink:type="simple"/>
    <context id="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000723125</identifier>
        </entity>
        <period>
            <startDate>2021-01-07</startDate>
            <endDate>2021-01-07</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV80L2ZyYWc6YjgzZDFiNzMwYmQ0NGRlMzg3MjJkYTQ0Y2FhOTUwMmIvdGFibGU6MGQwMGUyNDU2NGFmNGRhN2FjNTMwMmEyODIwODg1YzYvdGFibGVyYW5nZTowZDAwZTI0NTY0YWY0ZGE3YWM1MzAyYTI4MjA4ODVjNl8wLTEtMS0xLTA_01a78f7f-debf-4678-b47f-c7644bb137f3">0000723125</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV80L2ZyYWc6YjgzZDFiNzMwYmQ0NGRlMzg3MjJkYTQ0Y2FhOTUwMmIvdGFibGU6MGQwMGUyNDU2NGFmNGRhN2FjNTMwMmEyODIwODg1YzYvdGFibGVyYW5nZTowZDAwZTI0NTY0YWY0ZGE3YWM1MzAyYTI4MjA4ODVjNl8xLTEtMS0xLTA_1922d666-ad50-43cf-b709-8408ed68e9a6">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDgx_bc8eee08-701a-4f8e-9630-6cbedd7a3bc3">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8xMDk5NTExNjMwNDIz_6dc97e9d-a001-4a02-b640-ecb1c4ef303e">2021-01-07</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ODI0NjZjN2QwNzAxNDQ4YmIyMjcwMjgwNTJhNjRlZjAvdGFibGVyYW5nZTo4MjQ2NmM3ZDA3MDE0NDhiYjIyNzAyODA1MmE2NGVmMF8wLTAtMS0xLTA_262b2437-4b66-4c0e-a12c-c30cfcff6da8">MICRON TECHNOLOGY, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ODg3ODRhMjkyN2Q5NGRkYWI0ZDFmMjQ3NTJjMWQwMjUvdGFibGVyYW5nZTo4ODc4NGEyOTI3ZDk0ZGRhYjRkMWYyNDc1MmMxZDAyNV8wLTAtMS0xLTA_d9313347-64e5-42ba-82ce-aa3bd814bdaa">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ODg3ODRhMjkyN2Q5NGRkYWI0ZDFmMjQ3NTJjMWQwMjUvdGFibGVyYW5nZTo4ODc4NGEyOTI3ZDk0ZGRhYjRkMWYyNDc1MmMxZDAyNV8wLTItMS0xLTA_b8c19eee-6475-45b3-ac5e-1eb454a5cea3">1-10658</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ODg3ODRhMjkyN2Q5NGRkYWI0ZDFmMjQ3NTJjMWQwMjUvdGFibGVyYW5nZTo4ODc4NGEyOTI3ZDk0ZGRhYjRkMWYyNDc1MmMxZDAyNV8wLTQtMS0xLTA_a05c42c9-ba83-4708-b188-b3519d73e541">75-1618004</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MmNmZTNkMzA0ZjIxNDQ3ODk1MmFkMWE4OTI1NTRmMTUvdGFibGVyYW5nZToyY2ZlM2QzMDRmMjE0NDc4OTUyYWQxYTg5MjU1NGYxNV8wLTAtMS0xLTA_7b34cb12-9f52-4767-87d2-7bc183801d80">8000 South Federal Way</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MmNmZTNkMzA0ZjIxNDQ3ODk1MmFkMWE4OTI1NTRmMTUvdGFibGVyYW5nZToyY2ZlM2QzMDRmMjE0NDc4OTUyYWQxYTg5MjU1NGYxNV8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpjOGI0OTU0N2ViMDE0NWMwYmZmMDdlYzZiNTUwNTIwMV80_fb3a69a7-721f-40d6-9dac-f940b0bf7aec">Boise</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MmNmZTNkMzA0ZjIxNDQ3ODk1MmFkMWE4OTI1NTRmMTUvdGFibGVyYW5nZToyY2ZlM2QzMDRmMjE0NDc4OTUyYWQxYTg5MjU1NGYxNV8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpjOGI0OTU0N2ViMDE0NWMwYmZmMDdlYzZiNTUwNTIwMV84_13a4bbcd-2663-4fe0-986b-c503e177ef70">ID</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MmNmZTNkMzA0ZjIxNDQ3ODk1MmFkMWE4OTI1NTRmMTUvdGFibGVyYW5nZToyY2ZlM2QzMDRmMjE0NDc4OTUyYWQxYTg5MjU1NGYxNV8xLTAtMS0xLTAvdGV4dHJlZ2lvbjpjOGI0OTU0N2ViMDE0NWMwYmZmMDdlYzZiNTUwNTIwMV8xMg_abbc0f8c-e4d4-4f36-acc3-eb54dbbb8ded">83716</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ZDA2YWViODY5OGFiNDY2OGJiNDRmODBlZTY1ZDVlZjYvdGFibGVyYW5nZTpkMDZhZWI4Njk4YWI0NjY4YmI0NGY4MGVlNjVkNWVmNl8wLTAtMS0xLTAvdGV4dHJlZ2lvbjphZjNhZmMwMGI4MzA0NGY5OGM0ZGE0YmQ4MWVkZTgzYl81_0783ac8b-2a55-4dfc-b065-434b04968fd7">208</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6ZDA2YWViODY5OGFiNDY2OGJiNDRmODBlZTY1ZDVlZjYvdGFibGVyYW5nZTpkMDZhZWI4Njk4YWI0NjY4YmI0NGY4MGVlNjVkNWVmNl8wLTAtMS0xLTAvdGV4dHJlZ2lvbjphZjNhZmMwMGI4MzA0NGY5OGM0ZGE0YmQ4MWVkZTgzYl85_4e60f492-b6ab-4979-b52e-439a5a29bb3c">368-4000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDgy_29721922-580a-4e96-aa90-9c2d7cc55789">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDc3_a8b4e470-e5cf-4966-bf8b-c12074f27293">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDc4_38ae0b00-6843-4251-a4e0-5088e459062d">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDc5_36272109-6c8f-4ee7-84d5-3eeb50b4b088">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MTc4NTlkN2E4YTg3NDQyZmFiYzU3MDk0NDk4ZjZhOGMvdGFibGVyYW5nZToxNzg1OWQ3YThhODc0NDJmYWJjNTcwOTQ0OThmNmE4Y18xLTAtMS0xLTA_7201005e-7b8a-4a21-b7dd-6bb0c63309b4">Common Stock, par value $0.10 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MTc4NTlkN2E4YTg3NDQyZmFiYzU3MDk0NDk4ZjZhOGMvdGFibGVyYW5nZToxNzg1OWQ3YThhODc0NDJmYWJjNTcwOTQ0OThmNmE4Y18xLTItMS0xLTA_4de0cadb-6a05-4049-a648-84fe29649003">MU</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6MTc4NTlkN2E4YTg3NDQyZmFiYzU3MDk0NDk4ZjZhOGMvdGFibGVyYW5nZToxNzg1OWQ3YThhODc0NDJmYWJjNTcwOTQ0OThmNmE4Y18xLTQtMS0xLTA_3ad92648-f9ca-42c6-ad42-c0667689a716">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8yNDgw_6254824d-77e6-4818-950b-243d3890e94f">false</dei:EntityEmergingGrowthCompany>
    <dei:DocumentPeriodEndDate
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGV4dHJlZ2lvbjo2NDViZmNlNmViOWM0ZTQ4YjIwMjBmODhkNzNiNDI5OF8xMDk5NTExNjMwMzM3_6dc97e9d-a001-4a02-b640-ecb1c4ef303e">2021-01-07</dei:DocumentPeriodEndDate>
    <dei:DocumentPeriodEndDate
      contextRef="i491fa7c6aa3f4387a0f99590bc7e7c27_D20210107-20210107"
      id="id3VybDovL2RvY3MudjEvZG9jOjljZjA0NmMxNmQ2ZTRjZjRiYTJjNDc5OThkNTM2MTlhL3NlYzo5Y2YwNDZjMTZkNmU0Y2Y0YmEyYzQ3OTk4ZDUzNjE5YV8xL2ZyYWc6NjQ1YmZjZTZlYjljNGU0OGIyMDIwZjg4ZDczYjQyOTgvdGFibGU6M2EwOWNjMTZmNDc2NDIxNTg0ZDM0MTQ3MDU3M2I4M2YvdGFibGVyYW5nZTozYTA5Y2MxNmY0NzY0MjE1ODRkMzQxNDcwNTczYjgzZl8zLTEtMS0xLTA_6dc97e9d-a001-4a02-b640-ecb1c4ef303e">2021-01-07</dei:DocumentPeriodEndDate>
</xbrl>
