XML 75 R61.htm IDEA: XBRL DOCUMENT
v3.21.4

Contingencies (Details) ¥ in Millions, $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 03, 2022 complaint | Dec. 02, 2021 CNY (¥) patent complaint agreement | Dec. 02, 2021 USD ($) patent complaint agreement | Aug. 30, 2018
Securities Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 2 | 2 |
MLC Intellectual Property, LLC vs Micron | Patent Matters | Dismissed Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Loss Contingency, Claims Dismissed, Number |  | 1 | 1 |
Innovative Memory Solutions, Inc. vs Micron-Complaint 1 | Patent Matters |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 8 | 8 |
Loss Contingency, Patents Found Not Infringed, Number | patent |  | 6 | 6 |
Innovative Memory Solutions, Inc. vs Micron-Complaint 1 | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 2 | 2 |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 1 | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Damages sought on alleged patent infringement | ¥ |  | ¥ 98 |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 2 | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Damages sought on alleged patent infringement | ¥ |  | ¥ 98 |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
United Microelectronics Corporation vs Micron-Complaint 1 | Patent Matters | Withdrawn Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Damages sought on alleged patent infringement | ¥ |  | ¥ 90 |  |
Loss Contingency, Claims Dismissed, Number |  | 1 | 1 |
United Microelectronics Corporation vs Micron-Complaint 2 | Patent Matters | Withdrawn Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Damages sought on alleged patent infringement | ¥ |  | ¥ 90 |  |
Loss Contingency, Claims Dismissed, Number |  | 1 | 1 |
Fuzhou Court Preliminary Injunction | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percent of annualized revenue derived from impacted products |  |  |  | 1.00%
Flash-Control, LLC vs Micron | Patent Matters |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 4 | 4 |
Loss Contingency, Patents Found Not Infringed, Number | patent |  | 2 | 2 |
Flash-Control, LLC vs Micron | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Netlist Inc. vs Micron | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 1 | 1 |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Netlist Inc vs Micron - Complaint 2 | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 3 | 3 |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Vervain LLC vs Micron | Patent Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of patents allegedly infringed | patent |  | 4 | 4 |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Qimonda AG Inotera Share Purchase Proceedings | Under Appeal |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Percentage of total Inotera shares subject to litigation (in hundredths) |  | 18.00% | 18.00% |
Loss contingency, judgment under appeal | $ |  |  | $ 1 |
Claims on Behalf of Indirect Purchasers | Antitrust Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Subsequent indirect DRAM Purchasers United States vs Micron | Antitrust Matters | Dismissed Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Claims Dismissed, Number |  | 2 | 2 |
Subsequent direct DRAM Purchasers United States vs Micron | Antitrust Matters | Dismissed Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Claims Dismissed, Number |  | 4 | 4 |
Claims on Behalf of Direct Purchasers | Antitrust Matters | Under Appeal |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Claims Dismissed, Number |  | 1 | 1 |
DRAM Purchasers Canada vs Micron | Antitrust Matters | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 6 | 6 |
Micron Vs Fujian Jinhua | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Micron Vs United Microelectronics Corporation | Dismissed Litigation | Subsequent Event |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Claims Dismissed, Number | 1 |  |  |
Employee Class Action vs Micron | Under Appeal |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |
Micron Intel JV Arbitration Matter | Minimum | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Agreements Allegedly Breached, Number | agreement |  | 1 | 1 |
Allied Telesis K.K. vs Micron | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Loss Contingency, Pending Claims, Number |  | 1 | 1 |

X
- Definition Loss Contingency, Agreements Allegedly Breached, Number + References No definition available. + Details
Name: | mu_LossContingencyAgreementsAllegedlyBreachedNumber
Namespace Prefix: | mu_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of claims withdrawn. + References No definition available. + Details
Name: | mu_LossContingencyClaimsWithdrawnNumber
Namespace Prefix: | mu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss contingency resulting from a judgment that is currently under appeal. While not probable as of the reporting date, this judgment could result in an obligation to pay the disclosed amount. + References No definition available. + Details
Name: | mu_LossContingencyJudgmentUnderAppeal
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The estimated percent of revenue that could potentially be impacted by a loss contingency. + References No definition available. + Details
Name: | mu_LossContingencyPercentofPotentiallyImpactedRevenue
Namespace Prefix: | mu_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of subsidiary or equity method investee shares that are subject to legal proceedings. + References No definition available. + Details
Name: | mu_SubsidiaryOrEquityMethodInvestmentPercentageOfTotalSharesSubjectToLitigation
Namespace Prefix: | mu_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of claims dismissed. + References No definition available. + Details
Name: | us-gaap_LossContingencyClaimsDismissedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of another entity's patents that the entity has allegedly infringed. + References No definition available. + Details
Name: | us-gaap_LossContingencyPatentsAllegedlyInfringedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of another entity's patents that the entity was found not to have infringed. + References No definition available. + Details
Name: | us-gaap_LossContingencyPatentsFoundNotInfringedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=mu_SecuritiesMattersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_MLCIntellectualPropertyLLC.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=mu_PatentMattersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=mu_DismissedLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_InnovativeMemorySolutionsIncDelawareCourtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_FujianJinhuaIntegratedCircuitCo.Ltd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_FujianJinhuaIntegratedCircuitCo.Ltd.Complaint2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_UnitedMicroelectronicsCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=mu_WithdrawnLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_UnitedMicroelectronicsCorporationComplaint2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_FuzhouCourtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_FlashControlLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_NetlistIncComplaintMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_NetlistIncComplaint2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_VervainLLCComplaintMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_QimondaAgInoteraSharePurchaseProceedingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LitigationStatusAxis=mu_UnderAppealMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_ClaimsOnBehalfOfIndirectPurchasersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=mu_AntitrustMattersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_SubsequentindirectDRAMPurchasersUnitedStatesMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_SubsequentdirectDRAMPurchasersUnitedStatesMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_ClaimsOnBehalfOfDirectPurchasersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_DRAMPurchasersCanadaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_MicronVsFujianJinhuaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_MicronVsUnitedMicroelectronicsCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_EmployeeClassActionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_MicronIntelJVArbitrationMatterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=mu_AlliedTelesisKKMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |