Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co [Member] Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co [Member] Number of Shares - Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Loss contingency, judgment under appeal Loss Contingency, Judgment Under Appeal 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. Document Type Document Type Percent of annualized revenue derived from impacted products Loss Contingency, Percent of Potentially Impacted Revenue The estimated percent of revenue that could potentially be impacted by a loss contingency. Other non-operating income (expense), net Other non-operating income (expense), net Other Nonoperating Income (Expense) Joined Litigation Joined Litigation [Member] Litigation matters joined or combined with other matters to form a single matter. The individual claims are no longer pending. Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Treasury Stock Treasury Stock [Member] Payables and Accruals [Abstract] Payables and Accruals [Abstract] Segments Segments [Axis] Minimum lease period Lessee, Operating Lease, Lease Not Yet Commenced, Lock-In Period Lessee, Operating Lease, Lease Not Yet Commenced, Lock-In Period Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Convertible Senior Notes [Abstract] Convertible Debt [Abstract] Annual amortization expense for intangible assets [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Range Statistical Measurement [Domain] Liabilities and equity Liabilities and Equity [Abstract] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Security Exchange Name Security Exchange Name Intangible assets Intangible Assets, Net (Excluding Goodwill) Available Borrowing Capacity under the Credit Facility Debt Instrument, Unused Borrowing Capacity, Amount Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Operating income Operating income (loss) Operating Income (Loss) Initial direct DRAM Purchasers United States vs Micron Initial direct DRAM Purchasers United States [Member] Initial direct DRAM Purchasers United States [Member] Total current liabilities Liabilities, Current Contract Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Equipment not placed into service Equipment not placed into service [Member] Equipment which has not placed into service as it is still in the process of being installed and qualified. SBU SBU [Member] Storage Business Unit (SBU) includes SSDs and component-level solutions sold into enterprise and cloud, client, and consumer storage markets, other discrete storage products sold in component and wafer form. Variable Rate Variable Rate [Domain] Variable Rate Variable Rate [Axis] Commitments and contingencies Commitments and Contingencies Long-term marketable investments Long-term Marketable Investments Debt Securities, Available-for-sale, Noncurrent Assets Assets [Abstract] Lessee, Finance Lease, Description [Abstract] Lessee, Finance Lease, Description [Abstract] Schedule of Property, Plant, and Equipment [Table] Property, Plant and Equipment [Table] Repurchase of stock Treasury Shares Acquired and Stock Repurchased and Retired Equity impact of 1) the value of stock that has been repurchased and retired during the period (excess of the purchase price over par value can be charged against retained earnings once the excess is fully allocated to additional paid in capital) and 2) the cost of common and preferred stock that were repurchased during the period through single or various means. Income and other taxes Taxes Payable, Current Stock issued under stock plans Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Entity Address, State or Province Entity Address, State or Province Payment obligations Lessee, Finance Lease, Lease Not Yet Commenced, Future Payments Future undiscounted payments due under finance lease agreements that have been signed but have not yet commenced. Earnings Per Share Reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Accounts Payable and Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Fair value disclosure [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Retained earnings Retained Earnings (Accumulated Deficit) Operating lease right-of-use assets Operating Lease, Right-of-Use Asset (Gain) loss on debt prepayments, repurchases, and conversions Gain (Loss) on Extinguishment of Debt 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Government securities Sovereign Debt [Member] 2022 Finance Lease, Liability, to be Paid, Year One 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four 2026 and thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Total unrecognized compensation costs related to unvested awards expected to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Long-term debt Long-term debt (including finance lease obligation) Long-term Debt and Lease Obligation Hedging Designation Hedging Designation [Domain] Total lease cost Lease, Cost Treasury stock, 81 shares held (81 shares held as of September 3, 2020) Treasury Stock, Common, Value Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Raw materials and supplies Inventory, Raw Materials and Supplies, Net of Reserves Common Stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Other noncurrent liabilities Other Liabilities, Noncurrent Deferred tax assets Deferred Income Tax Assets, Net Other Payments for (Proceeds from) Other Investing Activities Cash flows used for financing activities from financing leases Finance Lease, Principal Payments Work in process Inventory, Work in Process, Net of Reserves Consolidated Amended Direct Purchasers CA vs Micron Consolidated Amended Direct Purchasers CA [Member] Consolidated Amended Direct Purchasers CA Stock-based compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Effect of changes in currency exchange rates on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Unallocated Segment Reconciling Items [Member] Inventories Inventories Inventory, Net Revenue Revenue from Contract with Customer, Excluding Assessed Tax Share Price (in dollars per share) Share Price Qimonda AG Inotera Share Purchase Proceedings Qimonda AG Inotera Share Purchase Proceedings [Member] Qimonda AG Inotera Share Purchase Proceedings [Member] DRAM DRAM Products [Member] DRAM semiconductor products Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] United Microelectronics Corporation vs Micron-Complaint 1 United Microelectronics Corporation [Member] United Microelectronics Corporation filed a patent infringement suit against Micron Semiconductor (Xi'an) Co., Ltd. Statement [Line Items] Statement [Line Items] Deferred income taxes, net Increase (Decrease) in Deferred Income Taxes Earnings per share Earnings Per Share, Basic and Diluted [Abstract] Income before taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract] Receivables Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Statement [Table] Statement [Table] Range Statistical Measurement [Axis] Noncurrent unearned government incentives Unearned Government Incentives, Noncurrent Liability for government incentives (proceeds from government agencies to incentivize certain types of investments, improvements, behaviors, etc.) that are expected to be recognized (earned) after one year or beyond the normal operating cycle, if longer. Restricted stock awards Restricted stock award [Member] Equity awards that include both restricted stock (stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met) and restricted stock units (Share instrument which is convertible to stock after a specified period of time or when specified performance conditions are met). Assumed conversion of debt Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Weighted Average Weighted Average [Member] Entity Small Business Entity Small Business Other operating (income) expense, net Other Operating Income (Expense), Net Operating Lease Maturities Lessee, Operating Lease, Liability, Payment, Due [Abstract] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Fair Value Hierarchy Fair Value Hierarchy and NAV [Domain] Selling, general, and administrative Selling, General and Administrative Expenses [Member] Amendment Flag Amendment Flag Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Number of shares used in per share calculations Weighted Average Number of Shares Outstanding, Diluted [Abstract] Property, plant, and equipment Property, Plant, and Equipment Payable, Current Carrying value as of the balance sheet date of payables for the acquisition of property, plant, and equipment not classified as trade payables. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Leases Lessee, Finance Leases [Text Block] Elm 3DS Innovations, LLC vs Micron Elm 3DS Innovations, LLC [Member] Elm 3DS Innovations, LLC [Member] Number of shares available for future awards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Entity Central Index Key Entity Central Index Key MBU MBU [Member] Mobile Business Unit (MBU) includes memory and storage products sold into smartphone and other mobile-device markets. Number of patents allegedly infringed Loss Contingency, Patents Allegedly Infringed, Number Other Other Other Nonoperating Income Expense The net of other nonoperating income and other nonoperating expense, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Gains (Losses) on Derivative Instruments Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Short-term investments Short-term Investments Debt Securities, Available-for-sale, Current Derivative Instrument Derivative Instrument [Axis] Estimated fair value and carrying value of debt instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Financial Instruments Financial Instruments [Domain] Estimated consideration payable to customers for pricing adjustments and returns Contract with Customer, Refund Liability, Current Net gains (losses) for derivative instruments without hedge accounting designation Derivative, Gain (Loss) on Derivative, Net Measurement Basis Fair Value Measurement [Domain] Income and other taxes Income Taxes Receivable, Current 2032D Notes Convertible senior notes due 2032D [Member] A borrowing which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Series due May 2032D. Reporting Segment Segments [Domain] Net income attributable to Micron – Diluted Net Income (Loss) Attributable to Parent, Diluted Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Abstract] Line of Credit Facility [Abstract] Dilutive effect of equity plans and convertible notes (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Property, Plant and Equipment by Type Long-Lived Tangible Asset [Axis] Employee stock purchase plan Employee Stock [Member] Schedule of Restricted Stock Awards Activity Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 2 Fujian Jinhua Integrated Circuit Co., Ltd. Complaint 2 [Member] Fujian Jinhua Integrated Circuit Co., Ltd. Complaint 2 [Member] Income Statement Location Income Statement Location [Axis] Consolidated Amended Indirect Purchasers CA vs Micron Consolidated Amended Indirect Purchasers CA [Member] Consolidated Amended Indirect Purchasers CA Innovative Memory Solutions, Inc. vs Micron-Complaint 1 Innovative Memory Solutions, Inc. Delaware Court [Member] Innovative Memory Solutions, Inc. filed a patent infringement action against us in the U.S. District Court for the District of Delaware. The complaint alleges that a variety of our NAND Flash products infringe eight U.S. patent and seeks damages, attorneys' fees, and costs. Other contract liabilities Services and Other Arrangements [Member] Services and other arrangements. Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Income Statement Location Income Statement Location [Domain] Cash Cash [Member] 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Selling, general, and administrative Selling, General and Administrative Expense Gross Notional Amount, Currency forwards Derivative, Notional Amount Schedule of Components of Lease Expense Lease, Cost [Table Text Block] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Other noncurrent assets Other Assets, Noncurrent Conversion rights, threshold percentage of applicable conversion price (in hundredths) Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Segment and Other Information Segment Reporting Disclosure [Text Block] Receivables Receivables Receivables, Net, Current Finance leases Finance Lease, Interest Payment on Liability Total assets Assets Schedule of Interim Income Tax Disclosures Schedule of Interim Income Tax Disclosures [Table Text Block] Tabular disclosure of income tax items reported in interim periods. Title of 12(b) Security Title of 12(b) Security Long-term Debt and Lease Obligation [Abstract] Long-term Debt and Lease Obligation [Abstract] Finance Lease Maturities Finance Lease, Liability, Payment, Due [Abstract] Reportable Segments Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Subsequent Event Type Subsequent Event Type [Axis] Cost of goods sold Cost of Sales [Member] Long-term Debt, by Current and Noncurrent [Abstract] Long-term Debt, by Current and Noncurrent [Abstract] Schedule of Finance Lease Maturities Finance Lease, Liability, Fiscal Year Maturity [Table Text Block] Interest expense Interest Expense Depreciation expense and amortization of intangible assets Depreciation, Depletion and Amortization Products and Services Product and Service [Axis] Total liabilities Liabilities Subsequent indirect DRAM Purchasers United States vs Micron Subsequent indirect DRAM Purchasers United States [Member] [Member] Subsequent indirect DRAM Purchasers United States [Member] [Member] Weighted average period that unrecognized compensation costs is expected to be recognized (in years) Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Damages sought on alleged patent infringement Loss Contingency, Damages Sought, Value All Other Other Segments [Member] Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Other Non-Operating Income (Expense), Net Other Nonoperating Income and Expense [Text Block] Revenue recognized from beginning balance Contract with Customer, Liability, Revenue Recognized Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 1 Fujian Jinhua Integrated Circuit Co., Ltd. [Member] Fujian Jinhua Integrated Circuit Co., Ltd. filed a patent infringement suit against Micron Semiconductor (Xi'an) Co., Ltd. Level 1 Fair Value, Inputs, Level 1 [Member] Net gains (losses) recognized in other comprehensive income from cash flow hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Inventories Increase (Decrease) in Inventories Loss Contingency, Claims Joined, Number Loss Contingency, Claims Joined, Number Number of claims joined or combined with other claims to form a single lawsuit. Notional Disclosures [Abstract] Notional Disclosures [Abstract] Restricted Stock Awards activity Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Micron Intel JV Arbitration Matter Micron Intel JV Arbitration Matter [Member] Micron Intel JV Arbitration Matter Debt Instrument Debt Instrument [Axis] Additional Capital Additional Paid-in Capital [Member] Schedule of Other Nonoperating Income (Expense), Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Operating Segments Operating Segments [Member] Other Other Operating Activities, Cash Flow Statement Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Allied Telesis K.K. vs Micron Allied Telesis K.K. [Member] Allied Telesis K.K. Adjustments to reconcile net income to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Litigation Case Litigation Case [Axis] Interest on lease liabilities Finance Lease, Interest Expense Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Acquisition of noncontrolling interest Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Common Stock, outstanding (in shares) Common Stock, Shares, Outstanding Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Fair Value of Convertible notes (level 2) Convertible Debt, Fair Value Disclosures Dismissed Litigation Dismissed Litigation [Member] Dismissal of a litigation claim by the court or jurisdictional in which the complaint was filed. Loss Contingencies by Nature of Contingency Loss Contingency Nature [Axis] Research and development Research and Development Expense Subsequent Event Subsequent Event [Member] Operating leases Operating Lease Payments Net of Tenant Improvement Receipts Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. This concept is reported net of cash received for tenant improvement reimbursements and allowances. Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Common Stock, authorized shares (in shares) Common Stock, Shares Authorized Schedule of Results by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Fair Value Estimate of Fair Value Measurement [Member] Income Statement [Abstract] Income Statement [Abstract] Payments on equipment purchase contracts Payments on equipment purchase contracts Payments on Short-term payables arising from purchases of equipment. Amount represents payments on short-term payables to equipment suppliers that were withheld until such time as the equipment is deemed to meet buyers' specifications. Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] 2026 and thereafter Finance Lease Liability, Payments Due, After Year Four Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Noncurrent operating lease liabilities Operating Lease, Liability, Noncurrent 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Four Pension liability adjustments Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Cash and Investments Cash, Cash Equivalents and Investments [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Cash settlement of convertible notes Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments MMJ Creditor Payments Reorganization obligation [Member] The liabilitiy owed to secured and unsecured creditors subject to a reorganization plan as part of bankruptcy proceedings. Flash-Control, LLC vs Micron Flash-Control, LLC [Member] Flash-Control, LLC Antitrust Matters Antitrust Matters [Member] Loss contingencies related to assertions regarding antitrust matters. Increase in amortizing intangible assets Finite-Lived Intangible Assets, Period Increase (Decrease) Software Software and Software Development Costs [Member] Comprehensive income attributable to Micron Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2024 Finance Lease, Liability, to be Paid, Year Three Expenditures for property, plant, and equipment Payments to Acquire Property, Plant, and Equipment City Area Code City Area Code Consolidation Items Consolidation Items [Domain] Cash flows used for operating activities Cash Flow, Operating Activities, Lessee [Abstract] Document Period End Date Document Period End Date Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Intangible Assets and Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Remaining Performance Obligation Percentage Revenue, Remaining Performance Obligation, Percentage Equity in net income (loss) of equity method investees Income (Loss) from Equity Method Investments Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Income (loss) before income taxes, net income (loss) attributable to noncontrolling interests, and equity in net income (loss) of equity method investees Income before taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Hedging Designation Hedging Designation [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Credit Facility Notes Payable, Other Payables [Member] Other Accounts Payable, Other, Current Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Fuzhou Court Preliminary Injunction Fuzhou Court [Member] Fuzhou Court preliminary injunction related to patent matters filed in that court. Other comprehensive income before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Long-term Debt, Type Long-term Debt, Type [Domain] Stock-based compensation Share-based Payment Arrangement, Noncash Expense Loss Contingency, Claims Dismissed, Number Loss Contingency, Claims Dismissed, Number Other Proceeds from (Payments for) Other Financing Activities Other (primarily 3D XPoint memory and NOR) Other Product Sales [Member] Net other product sales to external customers. Designated hedging instruments Designated as Hedging Instrument [Member] Cover page. Cover [Abstract] Inventory, Net, Items Net of Reserve Alternative [Abstract] Inventory, Net, Items Net of Reserve Alternative [Abstract] Conversion Value in Excess of Principal Debt Instrument, Convertible, If-converted Value in Excess of Principal Cash and equivalents and the fair values of available-for-sale investments Debt Securities, Available-for-sale [Table Text Block] Tax benefit per diluted share from incentive arrangements Income Tax Holiday, Income Tax Benefits Per Share Repurchase of stock (in shares) Stock Repurchased and Retired During Period, Shares Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Renewal term Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term General maturity of currency forward contracts (in months) Maximum Remaining Maturity of Foreign Currency Derivatives Notes Loans Payable [Member] Total Long-term Debt Carrying Value of Debt Long-term Debt Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Leases Lessee, Operating Leases [Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Accounts Payable and Accrued Liabilities, Current [Abstract] Accounts Payable and Accrued Liabilities, Current [Abstract] Total Net Carrying Amount of Debt (including finance lease obligation) Debt and Lease Obligation Cost of goods sold Cost of Goods and Services Sold Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Components of Lease Expense Lease, Cost [Abstract] Equity Components Equity Components [Axis] Gains (losses) on derivative instruments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Loss Contingency, Pending Claims, Number Loss Contingency, Pending Claims, Number Finished goods Inventory, Finished Goods, Net of Reserves Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Debt Instrument, Name Debt Instrument, Name [Domain] Receivables [Abstract] Receivables [Abstract] Minimum Minimum [Member] Land Land [Member] Property, plant, and equipment Property, plant, and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Finance leases, noncash acquisitions of right-of-use assets Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Asset-backed securities Asset-backed Securities [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Entity Interactive Data Current Entity Interactive Data Current Fair Value Measurements Fair Value Disclosures [Text Block] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Equity Stockholders' Equity Note Disclosure [Text Block] Proceeds from maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Payment obligations Lessee, Operating Lease, Lease Not Yet Commenced, Future Payments Future undiscounted payments due under operating lease agreements that have been signed but have not yet commenced. Remainder of 2021 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract] Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization [Abstract] Proceeds from government incentives Proceeds From Government Incentives Proceeds from government agencies to incentivize certain types of investments, improvements, behaviors, etc. Fiscal Period Fiscal Period, Policy [Policy Text Block] Additional capital Additional Paid in Capital, Common Stock Entity Registrant Name Entity Registrant Name Loss Contingency, Claims Withdrawn, Number Loss Contingency, Claims Withdrawn, Number Number of claims withdrawn by plaintiff. Subsequent Event Type Subsequent Event Type [Domain] Derivative [Table] Derivative [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating leases, Weighted-average discount rate Operating Lease, Weighted Average Discount Rate, Percent Revenue Segment Reporting Information, Revenue for Reportable Segment [Abstract] Other Other Cost and Expense, Operating Finance Lease Not yet Commenced Lessee, Finance Lease, Not yet Commenced, Description [Abstract] Share-based Payment Arrangement, Additional Disclosure [Abstract] Share-based Payment Arrangement, Additional Disclosure [Abstract] Number of reportable segments Number of Reportable Segments Other Nonoperating Income (Expense) [Abstract] Other Nonoperating Income (Expense) [Abstract] Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Cash flow hedge gains expected to be reclassified into earnings within twelve months Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Effective Rate (in ten thousandths) Debt Instrument, Interest Rate, Effective Percentage Consolidation Items Consolidation Items [Axis] Research and development Research and Development Expense [Member] Not designated hedging instruments Not Designated as Hedging Instrument [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Trade receivables Accounts Receivable, after Allowance for Credit Loss, Current Investments [Abstract] Investments [Abstract] DRAM Purchasers Canada vs Micron DRAM Purchasers Canada [Member] DRAM Purchasers Canada [Member] Conversion rights, minimum number of trading days (in days) Debt Instrument, Convertible, Threshold Trading Days Restricted cash Restricted Cash, Noncurrent Entity Address, Postal Zip Code Entity Address, Postal Zip Code Goodwill Goodwill Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Repayments of debt Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security Document Transition Report Document Transition Report Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] 2024 Notes Unsecured Senior Corporate Debt due 2024_2 [Member] Unsecured senior corporate debt due 2024 issued February 2019. Fair Value of Assets Derivative Asset, Fair Value, Gross Asset Withdrawn Litigation Withdrawn Litigation [Member] Litigation case withdrawn by the plaintiff. Level 2 Fair Value, Inputs, Level 2 [Member] Buildings Building and Building Improvements [Member] Other current assets Other Assets, Current Document Quarterly Report Document Quarterly Report Micron Shares Equity [Abstract] Basis of Presentation Basis of Accounting [Text Block] Receivables Increase (Decrease) in Receivables Schedule of Intangible Assets and Goodwill Schedule of Intangible Assets and Goodwill [Table Text Block] Revolving credit facility Revolving Credit Facility Component [Member] Revolving Credit Facility 5 - arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount. Accounts payable Accounts Payable, Trade, Current Recently Adopted Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Derivative Contract Derivative Contract [Domain] Conversion price per share Debt Instrument, Convertible, Conversion Price Diluted (in shares) Weighted-average common shares outstanding – Diluted Weighted Average Number of Shares Outstanding, Diluted Litigation Case Type Litigation Case [Domain] Basic (in dollars per share) Earnings Per Share, Basic Contingencies Contingencies Disclosure [Text Block] Entity File Number Entity File Number Schedule of Accounts Payable And Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Operating leases, Weighted-average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Amortization of debt discount and other costs Amortization of Debt Issuance Costs and Discounts MLC Intellectual Property, LLC vs Micron MLC Intellectual Property, LLC. [Member] MLC Intellectual Property, LLC. [Member] Patent Matters Patent Matters [Member] Loss contingencies related to assertions regarding infringement of other's intellectual property rights. Net cash provided by (used for) financing activities Net Cash Provided by (Used in) Financing Activities Amount of Remaining Performance Obligation Revenue, Remaining Performance Obligation, Amount New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Update and Change in Accounting Principle [Abstract] Stock-based compensation expense Stock-based compensation Share-based Payment Arrangement, Expense Unrealized Gains (Losses) on Investments AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Gross unrecognized tax benefits Unrecognized Tax Benefits Common stock, $0.10 par value, 3,000 shares authorized, 1,198 shares issued and 1,117 outstanding (1,194 shares issued and 1,113 outstanding as of September 3, 2020) Common Stock, Value, Issued Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus Employee Class Action vs Micron Employee Class Action [Member] Employee class action suit alleging unfair performance ratings and related impact to bonus achievements. Loss Contingency [Abstract] Loss Contingency [Abstract] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Two Commercial paper Commercial Paper [Member] Current Portion of Long-term Debt Long-term Debt, Current Maturities Schedule of Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status 2025 Finance Lease, Liability, to be Paid, Year Four Current debt Current debt (including finance lease obligation) Debt, Current Contract Liabilities Change in Contract with Customer, Liability [Abstract] EBU EBU [Member] Embedded Business Unit (EBU) includes memory products sold into automotive, industrial, and consumer markets. Purchases of available-for-sale securities Payments to Acquire Debt Securities, Available-for-sale Stock issued under stock plans (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Weighted Average Grant Date Fair Value Per Share - Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Common Stock, issued (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Issued Cash and equivalents Cash and Equivalents Cash and Cash Equivalents, at Carrying Value Currency forward Foreign Exchange Forward [Member] Operating Lease Liability Operating Lease, Liability Cash and Investments Cash, Cash Equivalents, and Marketable Securities [Text Block] Litigation Status Litigation Status [Axis] Noncurrent Long-Term Debt Long-term Debt, Excluding Current Maturities Segment Reporting [Abstract] Segment Reporting [Abstract] Debt Instrument [Line Items] Debt Instrument [Line Items] Total equity Balance (2021) Balance (2021) Stockholders' Equity Attributable to Parent Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Total liabilities and equity Liabilities and Equity Loss Contingencies [Line Items] Loss Contingencies [Line Items] Accumulated other comprehensive income (loss) Accumulated other comprehensive income (loss) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Entity Address, City or Town Entity Address, City or Town Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Debt Instrument, Fair Value Disclosure [Abstract] Debt Instrument, Fair Value Disclosure [Abstract] Salaries, wages, and benefits Employee-related Liabilities, Current Cash flows used for financing activities Cash Flow, Financing Activities, Lessee [Abstract] Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] Operating lease cost Operating Lease, Cost Total Micron Shareholders' Equity Parent [Member] Accounts payable and accrued expenses Total accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Hedging Relationship Hedging Relationship [Axis] Financial Instrument Financial Instrument [Axis] Antidilutive potential common shares that could dilute basic earnings per share in the future (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Operating Leases Not yet Commenced Lessee, Operating Lease, Not yet Commenced, Description [Abstract] Term loan facility Term Loan Facility Component [Member] Term loan facility component available under master credit facility. Finance leases, Weighted-average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Contract liabilities from customer advances (product) Product [Member] 2023 Notes Unsecured Senior Corporate Debt Due 2023 [Member] Unsecured Senior Corporate Debt Due 2023 Useful lives of assets placed into service Finite-Lived Intangible Asset, Useful Life Equity Component Equity Component [Domain] Gains (losses) on investments OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax Gross margin Gross Profit 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Construction in progress Construction in Progress [Member] Entity Tax Identification Number Entity Tax Identification Number United Microelectronics Corporation vs Micron-Complaint 3 United Microelectronics Corporation Complaint 3 [Member] United Microelectronics Corporation Complaint 3 [Member] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Equity Plans Share-based Payment Arrangement [Text Block] Net income attributable to Micron Net income (2021) Net income attributable to Micron – Basic Net Income (Loss) Attributable to Parent Long-Term Finance Lease Obligations Finance Lease, Liability, Noncurrent Change in operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Other current liabilities Other Liabilities, Current Remainder of 2021 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Acquisition of noncontrolling interest in IMFT Payments to Noncontrolling Interests LIBOR London Interbank Offered Rate (LIBOR) [Member] Inventories Inventory Disclosure [Text Block] Other comprehensive income (loss) Other comprehensive income (loss), net Other Comprehensive Income (Loss), Net of Tax Leases [Abstract] Long-term Debt, Type Long-term Debt, Type [Axis] Total current assets Assets, Current Current Fiscal Year End Date Current Fiscal Year End Date 2029 Notes Unsecured Senior Corporate Debt Due 2029 [Member] Unsecured senior corporate debt due 2029 issued February 2019. Recently Issued Accounting Standards Description of New Accounting Pronouncements Not yet Adopted [Text Block] Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Earnings per share Earnings Per Share [Abstract] Finance Lease Liability Total Finance Lease Obligations Finance Lease, Liability Property, plant, and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Derivative, Fair Value, Net [Abstract] Derivative, Fair Value, Net [Abstract] Pension Liability Adjustments Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Shareholders' equity Stockholders' Equity Attributable to Parent [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Lease term Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Certificates of deposit Certificates of Deposit [Member] Other Other Receivables, Net, Current Gain (loss) on debt prepayments, repurchases, and conversions Gains Losses On Extinguishment Of Debt And Derivative Gain Loss On Derivative Net Total loss on extinguishment of debt for both the difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity and the amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Entity Filer Category Entity Filer Category Stock-based Compensation Expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Subsequent direct DRAM Purchasers United States vs Micron Subsequent direct DRAM Purchasers United States [Member] [Member] Subsequent direct DRAM Purchasers United States [Member] [Member] Common Stock Common Stock [Member] Products and Services Product and Service [Domain] Cumulative Foreign Currency Translation Adjustment Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Type Long-Lived Tangible Asset [Domain] Debt Debt and Capital Leases Disclosures [Text Block] Schedule of Other Lease Information Schedule of Other Lease Information [Table Text Block] Schedule of Other Lease Information Shareholder Class Action Delaware Court vs Micron. Shareholder Derivative Complaint Delaware Court [Member] Shareholder Class Action Delaware Court [Member] Convertible Debt Convertible notes Convertible Debt [Member] Finance leases, Weighted-average discount rate Finance Lease Effective Rate (in ten thousandths) Finance Lease, Weighted Average Discount Rate, Percent Securities Matters Securities Matters [Member] Loss contingencies related to assertions regarding securities matters. Schedule of Property, Plant, and Equipment Property, Plant and Equipment [Table Text Block] Total Fair Value Cash, Cash Equivalents, and Available-for-Sale Debt Securities Amount of cash and equivalents and investment in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Tax effects Other Comprehensive Income (Loss), Tax Gross Amount, Product and process technology Finite-Lived Intangible Assets, Gross Stated Rate (exact percentage) Debt Instrument, Interest Rate, Stated Percentage Remaining Performance Obligation, Period of Expected Timing of Satisfaction (in months) Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Money market funds Money Market Funds [Member] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect CNBU CNBU [Member] Compute and Networking Business Unit ("CNBU") includes memory products sold into client, cloud server, enterprise, graphics, and networking markets. Hedging Relationship Hedging Relationship [Domain] Finance lease right-of-use assets (included in property, plant, and equipment) Finance Lease, Right-of-Use Asset, after Accumulated Amortization Loss Contingency, Nature Loss Contingency, Nature [Domain] Schedule of Operating Lease Maturities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Consideration Payable to Customers Contract with Customer, Refund Liability [Abstract] Stock options Share-based Payment Arrangement, Option [Member] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] 2026 Notes Unsecured Senior Corporate Debt Due 2026_2 [Member] Unsecured senior corporate debt due 2026 issued February 2019. Basic (in shares) Weighted-average common shares outstanding – Basic Weighted Average Number of Shares Outstanding, Basic Margin on variable rate financing (in hundredths) Debt Instrument, Basis Spread on Variable Rate Operating income (loss) Segment Reporting Information, Operating Income (Loss) [Abstract] Treasury Stock, held (in shares) Treasury Stock, Common, Shares Cash flow hedges Cash Flow Hedging [Member] Loss Contingencies [Table] Loss Contingencies [Table] Carrying Value Reported Value Measurement [Member] Revenue and Customer Contract Liabilities Revenue from Contract with Customer [Text Block] Statement of Other Comprehensive Income [Abstract] Statement of Other Comprehensive Income [Abstract] Balance (2020) Balance (2020) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Operating leases, noncash acquisitions of right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Remainder of 2021 Finance Lease, Liability, to be Paid, Remainder of Fiscal Year 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Under Appeal Under Appeal [Member] Under Appeal Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Income tax (provision) benefit Income Tax Expense (Benefit) 2027 Notes Unsecured Senior Corporate Debt Due 2027 [Member] Unsecured senior corporate debt due 2027. Tax benefit from incentive arrangements Income Tax Holiday, Aggregate Dollar Amount Cash, cash equivalents, and restricted cash at beginning of period Cash, cash equivalents, and restricted cash at end of period Cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents General maturities of long-term marketable securities (in years) Long Term Marketable Securities General Maturities Term The general maturity period (in years) for the Company's long term marketable securities. Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Diluted (in dollars per share) Earnings Per Share, Diluted Current Finance Lease Obligations Finance Lease, Liability, Current Proceeds from sales of available-for-sale securities Proceeds from Sale of Debt Securities, Available-for-sale Local Phone Number Local Phone Number Amount reclassified out of accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Initial indirect DRAM Purchasers United States vs Micron Initial indirect DRAM Purchasers United States [Member] Indirect DRAM Purchasers United States [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Line Items] Derivative [Line Items] Interest income Investment Income, Net Aggregate principal amount Long-term Debt, Gross Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Contract liabilities Contract with Customer, Liability Entity Emerging Growth Company Entity Emerging Growth Company Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Conversion rights, consecutive trading period (in days) Debt Instrument, Convertible, Threshold Consecutive Trading Days Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Fair Value of Liabilities Derivative Liability, Fair Value, Gross Liability Percentage of total Inotera shares subject to litigation (in hundredths) Subsidiary Or Equity Method Investment, Percentage Of Total Shares Subject To Litigation The percentage of subsidiary or equity method investee shares that are subject to legal proceedings. Award Type Award Type [Axis] Net income (2020 excluding redeemable noncontrolling interest) Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Accumulated Amortization, Product and process technology Finite-Lived Intangible Assets, Accumulated Amortization Lease term Lessee, Finance Lease, Lease Not yet Commenced, Term of Contract Maximum Maximum [Member] Noncontrolling Interest in Subsidiary Noncontrolling Interest [Member] Conversion value of convertible notes Debt Instrument, Convertible, If-converted Value The convertible debt's if-converted value amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only. Retained Earnings Retained Earnings [Member] Measurement Basis Measurement Basis [Axis] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Net cash provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Pending Litigation Pending Litigation [Member] Equity Award Award Type [Domain] Corporate bonds Corporate Bonds Corporate Debt Securities [Member] Trading Symbol Trading Symbol Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Loss Contingency, Agreements Allegedly Breached, Number Loss Contingency, Agreements Allegedly Breached, Number Loss Contingency, Agreements Allegedly Breached, Number Property, Plant, and Equipment Property, Plant and Equipment Disclosure [Text Block] Litigation Status Litigation Status [Domain] Lessee, Operating Lease, Description [Abstract] Lessee, Operating Lease, Description [Abstract] Fair and carrying value of debt instruments [Table] Fair Value, by Balance Sheet Grouping [Table] Restructure and asset impairments Restructuring, Settlement and Impairment Provisions Earnings Per Share Earnings Per Share [Text Block] Fair Value of Notes (level 2) Notes Payable, Fair Value Disclosure Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] 2030 Notes Unsecured Senior Corporate Debt Due 2030 [Member] Unsecured senior corporate debt due 2030. Equipment Equipment [Member] Entity Shell Company Entity Shell Company Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] NAND NAND Products [Member] NAND semiconductor products Segment Policy Segment Reporting, Policy [Policy Text Block] 2023 Finance Lease, Liability, to be Paid, Year Two Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] United Microelectronics Corporation vs Micron-Complaint 2 United Microelectronics Corporation Complaint 2 [Member] United Microelectronics Corporation Complaint 2 [Member]