Earnings Per Share [Abstract] Earnings Per Share Reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Net income (loss) available to Micron shareholders – Basic Net Income (Loss) Attributable to Parent Dilutive effect related to equity method investment Dilutive Securities, Equity Method Investment Dilutive Effects Amount of increase (decrease) to parent's proportion of equity method income (loss) and thereby parent's total net income (loss) used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of investee's employees' stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities of an equity method investment. Net income (loss) available to Micron shareholders – Diluted Net Income (Loss) Attributable to Parent, Diluted Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted-average common shares outstanding - Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Dilutive effect of equity plans and convertible notes (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted-average common shares outstanding - Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings Per Share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Earnings Per Share, Diluted [Abstract] Earnings Per Share, Diluted [Abstract] Diluted (in dollars per share) Earnings Per Share, Diluted Segment Reporting [Abstract] Segment Reporting Policy Segment Reporting, Policy [Policy Text Block] Receivables [Abstract] Schedule of Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Property, Plant and Equipment [Abstract] Schedule of Property, Plant, and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment by Type Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type Property, Plant and Equipment, Type [Domain] Land Land [Member] Buildings Building and Building Improvements [Member] Equipment Equipment [Member] Construction in progress Construction in Progress [Member] Software Software and Software Development Costs [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Other noncurrent assets Other Noncurrent Assets [Member] Long-term Debt, Type Long-term Debt, Type [Axis] Long-term Debt, Type Long-term Debt, Type [Domain] Notes Payable, Other Payables Notes Payable, Other Payables [Member] Equipment not placed into service Equipment not placed into service [Axis] Equipment not placed into service [Axis] Equipment not placed into service Equipment not placed into service [Domain] [Domain] for Equipment not placed into service [Axis] 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. Collateral Collateral [Axis] Collateral Collateral [Domain] Property, Plant and Equipment Property, Plant and Equipment [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Movement in Property, Plant and Equipment [Roll Forward] Movement in Property, Plant and Equipment [Roll Forward] Property, plant and equipment, gross beginning balance Property, Plant and Equipment, Gross Property, Plant and Equipment, Additions Property, Plant and Equipment, Additions Property, plant and equipment, retirements and other Property, Plant and Equipment, Retirements and Other Amount of retirements and other changes of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. Property, plant and equipment, gross ending balance Movement in Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment [Roll Forward] Movement in Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment [Roll Forward] Accumulated depreciation beginning balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation, addition due to current period depreciation expense Accumulated Depreciation, Depletion and Amortization, Addition due to Current Period Depreciation Expense of Property, Plant and Equipment Accumulated Depreciation, Depletion and Amortization, Addition due to Current Period Depreciation Expense of Property, Plant and Equipment Retirements and other changes to accumulated depreciation Accumulated Depreciation Depletion And Amortization Sale Disposal Or Other Adjustment Of Property Plant And Equipment The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of sales, disposals or other adjustments of property, plant and equipment during the period. Accumulated depreciation ending balance Movement in Property, Plant and Equipment, Net [Roll Forward] Movement in Property, Plant and Equipment, Net [Roll Forward] Movement in Property, Plant and Equipment, Net [Roll Forward] Property, plant, and equipment, net Property, Plant and Equipment, Net Property, plant and equipment, net affect of additions and depreciation expense Property, Plant and Equipment, Net Affect of Additions and Depreciation Expense Amount of net additions (reductions) of property, plant and equipment due to additions and depreciation expense during the period. Property, plant and equipment, net affect retirements and other adjustments Property, Plant and Equipment, Net Affect Retirements and Other Adjustments Net affect on gross property, plant and equipment and related accumulated depreciation due to retirements and other adjustments. Capital Leases, Balance Sheet, Assets by Major Class, Net [Abstract] Capital Leases, Balance Sheet, Assets by Major Class, Net [Abstract] Capital leased assets, gross Capital Leased Assets, Gross Capital leases, accumulated depreciation Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation Depreciation [Abstract] Depreciation [Abstract] Depreciation expense Depreciation Property, Plant and Equipment Assets Held-for-sale or held-for-development Disclosure [Abstract] Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract] Land held for development Inventory, Real Estate, Land and Land Development Costs Debt instrument, collateral amount of production equipment, buildings, and land Debt Instrument, Collateral Amount Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract] Capitalized Interest Costs, Including Allowance for Funds Used During Construction [Abstract] Interest capitalized as part of the cost of property, plant, and equipment Interest Costs Capitalized Accounting Policies [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Fiscal Period Fiscal Period, Policy [Policy Text Block] Derivative and Hedging Instruments Derivatives, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investments Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block] Functional Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Product and Process Technology Intangible Assets, Finite-Lived, Policy [Policy Text Block] Product Warranty Standard Product Warranty, Policy [Policy Text Block] Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Research and Development Research and Development Expense, Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Stock-based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Treasury Stock Treasury Stock [Policy Text Block] Accounting policy regarding the election to, when an excess of repurchase price over par or stated value is paid for treasury stock, either for retirement or constructive retirement, (1) allocate between additional paid-in capital and retained earnings or (2) charge the excess entirely to retained earnings in recognition of the fact that a corporation can always capitalize or allocate retained earnings for such purposes. Use of Estimates Use of Estimates, Policy [Policy Text Block] Inventory Disclosure [Abstract] Inventories Inventory Disclosure [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transactions, by Related Party Related Party [Axis] Related Party Related Party [Domain] Inotera Inotera [Member] Inotera Memories, Inc., a publicly-traded entity in Taiwan in which the registrant owns a noncontrolling equity interest. Tera Probe Tera Probe [Member] Tera Probe, Inc., a publicly-traded entity in Japan in which the registrant owns a noncontrolling equity interest. Aptina Aptina [Member] Aptina Imaging Corporation, a previously wholly-owned subsidiary of the registrant of which the registrant owns a noncontrolling interest. Unrecorded Unconditional Purchase Obligation by Category of Item Purchased Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unconditional Purchase Obligation, Category of Goods or Services Acquired Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Inventories Inventories [Member] Products and Services Products and Services [Axis] Products and Services Products and Services [Domain] DRAM DRAM [Member] Net DRAM product sales to external customers. Related Party Transaction [Line Items] Related Party Transaction [Line Items] Purchases of DRAM products from Inotera Unrecorded Unconditional Purchase Obligation, Purchases Revenues from transactions with related parties Revenue from Related Parties Margin recognized from sales transactions with related parties Related Party Transaction, Margin Recognized from Sales Transactions Reflects the net margin recognized from sales transactions with related parties. Includes effect of partial elimination of margin for transactions with investees accounted for under the equity method. Related party purchases from Tera Probe Related Party Transaction, Purchases from Related Party Cost of goods sold from transactions with Aptina Related Party Transaction, Expenses from Transactions with Related Party Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Extinguishment of Debt Disclosures [Abstract] Schedule of Extinguishment of Debt [Table] Schedule of Extinguishment of Debt [Table] Convertible Debt Convertible Debt [Member] Corporate bonds Corporate Debt Securities [Member] Income Statement Location Income Statement Location [Axis] Income Statement and Other Comprehensive Income Location Income Statement Location [Domain] Other non-operating income expense net Other Nonoperating Income (Expense) [Member] Interest Expense Interest Expense [Member] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument, Name [Domain] 2031B convertible senior notes Convertible senior notes due 2031B [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 August 2031B. 2032C convertible senior notes Convertible senior notes due 2032C [Member] A borrowing which can be exchanged for a specified amount of another security, typically the entities common stock, at the option of the issuer or the holder. Series due May 2032C. 2032D convertible senior 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. 2033E convertible senior notes Convertible Senior Notes Due 2033E [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 February 2033E. 2033F convertible senior note Convertible senior note due 2033F [Member] A borrowing which can be exchanged for a specific amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Series due February 2033F. 2043G convertible senior notes Convertible Senior Note Due 2043G [Member] A borrowing which can be exchanged for a specific amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Series due November 2043G. 2022 senior notes Unsecured senior corporate debt due 2022 [Member] Unsecured senior corporate debt due 2022 [Member] 2023 senior notes Unsecured senior corporate debt due 2023 [Member] Unsecured senior corporate debt due 2023 [Member] 2024 senior notes Unsecured Senior Corporate Debt Due 2024 [Member] Unsecured Senior Corporate Debt Due 2024 [Member] 2025 senior notes Unsecured senior corporate debt due 2025 [Member] Unsecured senior corporate debt due 2025 [Member] 2026 senior notes Unsecured Senior Corporate Debt Due 2026 [Member] Unsecured Senior Corporate Debt Due 2026 [Member] Debt Restructuring Type Debt Restructuring Type [Axis] Information pertaining to the type of debt restructuring transaction. Debt Restructuring Type [Domain] Debt Restructuring Type [Domain] Type of debt restructuring. Exchanged [Member] Exchanged [Member] Debt exchanged pursuant to a series of agreements. Conversion And Settlement [Member] Conversion And Settlement [Member] Conversion And Settlement of convertible debt [Member] Repurchase [Member] Repurchase [Member] Repurchase of convertible debt for cash [Member] Debt Issuance [Member] Debt Issuance [Member] Issuance as part of a restructure of debt [Member] Prepayment [Member] Prepayment [Member] Prepayment of debt [Member] Extinguishment of Debt [Line Items] Extinguishment of Debt [Line Items] Increase (Decrease) in Principal Debt Instrument, Increase (Decrease), Net Principal Net increase or decrease in the principal amount of the debt instrument for the period. Face value of debt extinguished Extinguishment of Debt, Amount Increase (Decrease) in Carrying Value Debt Instrument, Increase (Decrease), Net Decrease in Cash to Settle Long-term Debt Obligations Repayments to Settle Long-term Debt Obligations, Gross Gross cash outflow for repayment of debt obligations, those having an original maturity of one year or more, including a) principle amount b) fair value of equity component of convertible debt c) gain/losses on repayment d) make-whole interest e) other conversion features or f) any combination of the aforementioned components. Proceeds from Debt Issuances, Net of Issuance Costs Proceeds from Debt, Net of Issuance Costs Cash, increase (decrease), net change as a result of debt restructure activities Cash, Increase (Decrease), Net Change As A Result Of Debt Restructure Activities Cash, increase (decrease), net change as a result of debt restructure activities (Decrease) in Equity Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments Loss on restructure of debt 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. Interest and debt expense incurred through restructure of debt Interest and Debt Expense Debt Instrument, Face Amount Debt Instrument, Face Amount Restructuring and Related Activities [Abstract] Restructure and Asset Impairments Restructuring and Related Activities Disclosure [Text Block] Inventory, Net, Items Net of Reserve Alternative [Abstract] Finished goods Inventory, Finished Goods, Net of Reserves Work in process Inventory, Work in Process, Net of Reserves Raw materials and supplies Inventory, Raw Materials and Supplies, Net of Reserves Inventories Inventory, Net Basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Payables and Accruals [Abstract] Schedule of Accounts Payable And Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Risks and Uncertainties [Abstract] Schedule of Market Concentration Risk Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Loss Contingency [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies by Nature of Contingency Loss Contingency Nature [Axis] Loss Contingency, Nature Loss Contingency, Nature [Domain] Patent Matters Patent Matters [Member] Loss contingencies related to assertions regarding infringement of other's intellectual property rights. Litigation Status Litigation Status [Axis] Litigation Status Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Litigation Case Litigation Case [Axis] Litigation Case Type Litigation Case [Domain] Elm 3DS Innovations, LLC Elm 3DS Innovations, LLC [Member] Elm 3DS Innovations, LLC [Member] Innovative Memory Solutions, Inc. Innovative Memory Solutions, Inc. [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. Harvard University Harvard University [Member] The President and Fellows of Harvard University. Qimonda AG Inotera Share Purchase Proceedings Qimonda AG Inotera Share Purchase Proceedings [Member] Qimonda AG Inotera Share Purchase Proceedings [Member] Equity Method Investee, Name Investment, Name [Axis] Equity Method Investee, Name Investment, Name [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of patents allegedly infringed Loss Contingency, Patents Allegedly Infringed, Number Inotera Investment, Percentage of shares owned subject to litigation (in hundredths) Equity Method Investment, Shares Owned Subject to Litigation The approximate percentage of shares of an equity method investment owned by the entity which are currently subject to litigation. 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. Carrying value of Inotera shares acquired from Qimonda Equity Method Investment Net Carrying Value Of Shares Subject to Litigation Equity Method Investment Net Carrying Value Of Shares Subject to Litigation Quoted market value of Inotera shares acquired from Qimonda Equity Method Investment, Quoted Market Value Of Shares Subject to Litigation This item represents the aggregate value of each identified investment accounted for under the equity method of accounting subject to litigation based on the quoted market price for those investments in common stock for which a quoted market price is available. Net Sales based on Ship-to Location Revenue from External Customers by Geographic Areas [Table Text Block] Net Property, Plant, and Equipment by Geographic Areas Long-lived Assets by Geographic Areas [Table Text Block] Debt Disclosure [Abstract] Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of MMJ Creditor Installment Payments Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods [Table Text Block] Schedule of Senior Notes Debt Instrument Redemption [Table Text Block] Schedule of Convertible Senior Notes Convertible Debt [Table Text Block] Schedule of Convertible Senior Note Interest Expense Schedule Of Convertible Debt Instruments Interest Expense [Text Block] Schedule of interest rates and expense related to the entities convertible notes with debt and equity components. Schedule of Debt Restructure Schedule of Extinguishment of Debt [Table Text Block] Maturities of Notes Payable and Future Minimum Lease Payments Schedule of Maturities of Long-term Debt [Table Text Block] Accounts Payable and Accrued Expenses [Table] Accounts Payable and Accrued Expenses [Table] Non-Volatile Memory Non-Volatile Memory [Member] Net Non-Volatile Memory sales to external customers. Non-volatile memory includes NAND Flash, 3D XPoint, and MCP which combine both NAND Flash and DRAM. Other noncurrent liabilities Other Noncurrent Liabilities [Member] Customer Customer [Axis] Name of Major Customer Customer [Domain] Intel Intel [Member] Intel Corporation ("Intel"). Type of Arrangement and Non-arrangement Transactions Type of Arrangement and Non-arrangement Transactions [Axis] Arrangements and Non-arrangement Transactions Arrangements and Non-arrangement Transactions [Domain] Trade Sales Non-arrangement Transactions [Member] Statement [Line Items] Accounts payable Accounts Payable, Trade, Current Property, plant, and equipment payables Equipment Purchase 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). Salaries, wages, and benefits Employee-related Liabilities, Current Related party payables Accounts Payable, Related Parties, Current Customer advances Customer Advances, Current Income and other taxes Taxes Payable, Current Other Accounts Payable, Other, Current Total accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Other Liabilities, Noncurrent [Abstract] Noncurrent customer advances Customer Advances, Noncurrent Investments [Abstract] Cash and equivalents and the fair values of available-for-sale investments Available-for-sale Securities [Table Text Block] Compensation and Retirement Disclosure [Abstract] Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Investment Type Investment Type [Axis] Investments Investments [Domain] Cash Cash [Member] Money market funds Money Market Funds [Member] Certificates of deposit Certificates of Deposit [Member] Government securities Sovereign Debt [Member] Asset-backed securities Asset-backed Securities [Member] Commercial paper Commercial Paper [Member] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Fair Value Hierarchy Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Range Range [Axis] Range Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Cash and equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Available-for-sale Securities, Current Long-term marketable investments Available-for-sale Securities, Noncurrent Total fair value Available-for-sale Securities Long-term marketable investments, general maturities (in years) Long Term Marketable Securities General Maturities Term The general maturity period (in years) for the Company's long term marketable securities. Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Proceeds from sales of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Available-for-sale securities in an unrealized loss position for longer than twelve months Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Restricted Cash and Cash Equivalents Restricted Cash and Cash Equivalents Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments Equity Method Investments and Joint Ventures Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Business Acquisition Business Acquisition [Axis] Business Acquisition, Acquiree Business Acquisition, Acquiree [Domain] Subsequent Event [Line Items] Subsequent Event [Line Items] Schedule of Inotera Acquisition Schedule of Business Acquisitions, by Acquisition [Table Text Block] Schedule of Pro Forma Information including Inotera Business Acquisition, Pro Forma Information [Table Text Block] Income Tax Disclosure [Abstract] Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] Income Tax Authority Income Tax Authority [Axis] Income Tax Authority Income Tax Authority [Domain] Federal Domestic Tax Authority [Member] State State and Local Jurisdiction [Member] Carryforward expiration period Carryforward Expiration Period [Axis] Carryforward expiration period [Axis] Carryforward expiration period Carryforward Expiration Period [Domain] Carryforward expiration period domain. 2017 - 2021 Carryforward Expiring Within Five Years [Member] Carryforward expiring within five years of the balance sheet date. 2022 - 2026 Carryforward Expiring Within Six To Ten Years [Member] Carryforward expiring within six to ten years of the balance sheet date. 2027 - 2031 Carryforward Expiring Within Eleven To Fifteen Years [Member] Carryforward expiring within eleven to fifteen years of the balance sheet date. 2032 - 2036 Carryforward Expiring After Fifteen Years [Member] Carryforward expiring after fifteen years of the balance sheet date. Indefinite Carryforward Indefinite [Member] Carryforward which is indefinite lived. Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] Tax credit carryforwards Tax Credit Carryforward, Amount Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information [Table] Statement [Table] Restructuring Plan Restructuring Plan [Axis] Restructuring Plan Restructuring Plan [Domain] 2016 Restructuring Plan Fourth Quarter of 2016 Restructuring Plan [Member] Fourth quarter of 2016 restructuring plan. Net sales Revenue, Net Gross margin Gross Profit Operating income (loss) Operating Income (Loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) attributable to Micron Earnings (loss) per share Selected Quarterly Financial Information [Abstract] Selected Quarterly Financial Information [Abstract] 2016 Restructuring Plan Restructuring Charges Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities, Name [Domain] Equity plans Stock Compensation Plan [Member] Convertible notes Convertible Debt Securities [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] 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 Troubled Debt Restructuring, Debtor, Subsequent Periods [Table] Troubled Debt Restructuring, Debtor, Subsequent Periods [Table] Troubled Debt Restructuring, Debtor, Subsequent Periods [Axis] Troubled Debt Restructuring, Debtor, Subsequent Periods [Axis] Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name [Domain] Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name [Domain] Secured Creditors Secured Creditors [Member] Secured Creditors [Member] Unsecured Creditor Unsecured Creditor [Member] Unsecured Creditor [Member] Scenario Scenario [Axis] Scenario, Unspecified Scenario, Unspecified [Domain] Scenario, Plan Scenario, Plan [Member] Elpida Memories, Inc. now known as Micron Memory Japan, Inc. Elpida Company [Member] Details pertaining to acquisition of Elpida Memory, Inc. (“Elpida”) and its subsidiary. Akita, now known as Micron Akita, Inc. Akita [Member] Akita [Member] Reorganization obligation Reorganization obligation [Member] The liabilitiy owed to secured and unsecured creditors subject to a reorganization plan as part of bankruptcy proceedings. Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items] Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items] Reorganization Plan Payments, Total Cash Payments Reorganization Plan Payments, Total Cash Payments Reorganization Plan Payments, Total Cash Payments to the secured and unsecured creditors through installment payments beginning after the acquisition. Number of periodic MMJ creditor installment payments Debt Instruments Number Of Periodic Payments debt instruments number of periodic payments Recovery Rate of Reorganization Plan Creditors Recovery Rate of Reorganization Plan Creditors. Elpida Sponsor Agreement [Abstract] Business Combination, Description [Abstract] 2017 Reorganization Payment to Third Party Creditors in Year One Amount of estimated reorganization payment to third party creditors in year one following the date of the latest balance sheet presented in the financial statements. 2018 Reorganization Payment to Third Party Creditors in Year Two Amount of estimated reorganization payment to third party creditors in year two following the date of the latest balance sheet presented in the financial statements. 2019 Reorganization Payment to Third Party Creditors in Year Three Amount of estimated reorganization payment to third party creditors in year three following the date of the latest balance sheet presented in the financial statements. 2020 Reorganization Payment to Third Party Creditors in Year Four Amount of estimated reorganization payment to third party creditors in year four following the date of the latest balance sheet presented in the financial statements. Estimated Reorganization Payment to Third Party Creditors, Total Cash Payments Reorganization Payment to Third Party Creditors, Total Cash Payments Remaining Total estimated cash reorganization payment to third party creditors remaining as of the balance sheet date. Debt Instrument, Unamortized Discount Debt Instrument, Unamortized Discount Debt Debt and Capital Lease Obligations Accounts Payable and Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items Consolidation Items [Axis] Consolidation Items Consolidation Items [Domain] Operating Segments Operating Segments [Member] Unallocated Segment Reconciling Items [Member] Segments Segments [Axis] Reporting Segment Segments [Domain] CNBU CNBU [Member] Compute and Networking Business Unit ("CNBU") includes memory products sold to compute, networking, graphics, and cloud server markets. SBU SBU [Member] Storage Business Unit (SBU) includes memory products sold into enterprise, client, cloud, and removable storage markets. SBU also includes products sold to Intel through our IMFT joint venture. MBU MBU [Member] Mobile Business Unit (MBU) includes memory products sold to smartphone, tablet, and other mobile-device markets. EBU EBU [Member] Embedded Business Unit (EBU) includes memory products sold into automotive, industrial, connected home, and consumer electronics markets. All Other Other Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] Number of reportable segments Number of Reportable Segments Segment Reporting Information, Revenue for Reportable Segment [Abstract] Segment Reporting Information, Revenue for Reportable Segment [Abstract] Segment Reporting Information, Operating Income (Loss) [Abstract] Segment Reporting Information, Operating Income (Loss) [Abstract] Flow-through of inventory step up Cost of Goods Sold, Flow-Through of Business Combination Inventory Fair Value Adjustment The flow-through of business acquisition inventory fair value adjustment (step up) that impacted cost of goods sold for product sold to customers during the period. Stock-based compensation Share-based Compensation Restructure and asset impairments Restructuring, Settlement and Impairment Provisions Rambus settlement Gain (Loss) Related to Litigation Settlement Other Other Operating Income (Expense), Net Depreciation and Amortization [Abstract] Depreciation, Depletion and Amortization [Abstract] Depreciation and amortization expense included in operating income Depreciation and Amortization of Intangible Assets The amount of expense recognized in the current period that reflects the (1) allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation and (2) the aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Capital lease obligations Capital Lease Obligations [Member] Secured Debt Secured Debt [Member] 1.258% senior notes Secured Debt 4 [Member] Secured Debt 4 - Collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets. 2022 senior secured term loan B Term Loan B Credit Facility 1 [Member] The company's first Term Loan B Credit Facility. Secured Notes 2022 TLB and 2023 Senior Secured Notes 2022 senior secured term loan B and 2023 senior secured notes [Member] The company's 2022 Senior Secured term loan B Notes and the 2023 senior secured notes [Member] 2023 senior secured notes Senior Secured Notes 1 [Member] The company's first Senior Secured Notes. 2032C and 2032D convertible senior notes Convertible senior notes due 2032C and 2032D [Member] Borrowings 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. Includes the 2032C and 2032D notes. 2033E and 2033F convertible senior notes Convertible Senior Notes Due 2033 [Member] Convertible Senior Notes Due 2033 [Member] Other Notes ConvertibleSeniorNotesNoLongerOutstanding [Member] Convertible Notes that are not outstanding as of the most recent period end but were outstanding in prior periods presented. A borrowing which can be exchanges for a specific amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Sales-leaseback transactions Sales leaseback transactions [Member] A borrowing during the period recorded for a lease meeting the criteria for capitalization as a Sales-type lease. A lease is defined as an agreement conveying the right to use property, plant, or equipment (land or depreciable assets) usually for a stated period of time. Revolving Credit Facility 4 Revolving Credit Facility 4 [Member] Revolving Credit Facility 4 - arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount. Revolving Credit Facility 3 Revolving Credit Facility 3 [Member] Revolving Credit Facility 3 - arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount. Secured Debt 6 Secured Debt 6 [Member] Secured Debt 6 - Collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets. Legal Entity Legal Entity [Axis] Entity Entity [Domain] Micron Technology, Inc. Parent Company [Member] Variable Rate Variable Rate [Axis] Variable Rate Variable Rate [Domain] Federal Funds Effective Swap Rate Federal Funds Effective Swap Rate [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Variable Interest Rate Options Variable Interest Rate Options [Axis] Variable interest rate debt with multiple options of how interest is calculated at our option [Axis] Variable Interest Rate Options Variable Interest Rate Options [Domain] [Domain] for Variable interest rate debt with multiple options of how interest is calculated at our option [Axis] Variable Interest Rate Base Rate Option Variable Interest Rate Base Rate Option [Member] Variable Interest Rate Base Rate Option [Member] Variable Interest Rate LIBOR Rate Option Variable Interest Rate LIBOR Rate Option [Member] Variable Interest Rate LIBOR Rate Option [Member] Weighted Average Weighted Average [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, by Current and Noncurrent [Abstract] Long-term Debt, by Current and Noncurrent [Abstract] Current debt Debt, Current Long-term debt Long-term Debt and Capital Lease Obligations Debt Stated interest rate (in thousandths) Debt Instrument, Interest Rate, Stated Percentage Effective interest rate (in thousandths) Debt Instrument, Interest Rate, Effective Percentage Long-term Debt and Capital Lease Obligations, Net, Alternative [Abstract] Long-term Debt and Capital Lease Obligations, Net, Alternative [Abstract] Remaining Term (in years) Debt Instrument Remaining Discount Amortization Period Remaining term or amortization period for discount on debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Remaining Term (in years) Debt Instrument, Convertible, Remaining Discount Amortization Period Outstanding principal Long-term Debt, Gross Debt Instrument, Unamortized Discount and Debt Issuance Costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Carrying Value of Debt Subordinated Debt Subordinated Debt Leases, Capital [Abstract] Leases, Capital [Abstract] Capital Lease Obligations Incurred Capital Lease Obligations Incurred Proceeds from equipment sale-leaseback transactions Sale Leaseback Transaction, Gross Proceeds, Financing Activities Debt instrument, original term Debt Instrument, Term Percentage, Incurred in Current Period Debt Instrument Interest Rate Effective Percentage Incurred in Current Period For debt incurred in current period, effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Unsecured Debt [Abstract] Unsecured Debt [Abstract] Debt Instrument, Domestic Restricted Subsidiaries, Ownership Percentage by Parent Debt Instrument, Domestic Restricted Subsidiaries, Ownership Percentage by Parent Debt Instrument, Domestic Restricted Subsidiaries, Ownership Percentage by Parent which among other things, limit in certain circumstances to create or incur certain liens and guarantees or consolidate or merge. Debt Instrument, Redemption Price, Percentage Debt Instrument, Redemption Price, Percentage Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds Secured Debt [Abstract] Secured Debt [Abstract] Debt Instrument, Collateral Amount Debt instruments number of periodic payments Debt Instrument Payment Of Third Party Credit Enhancement Fee Debt Instrument Payment Of Third Party Credit Enhancement Fee A fee paid to a third party for a credit enhancement in order achieve favorable terms with a lender. Payments of debt issuance costs Payments of Debt Issuance Costs Debt Instrument Original Issuer Discount Percentage Debt Instrument Original Issuer Discount Percentage Debt Instrument Original Issuer Discount Percentage of Initial Principal Amount. Margin on variable rate financing Debt Instrument, Basis Spread on Variable Rate Debt instrument variable reference rate period 1 Debt Instrument Variable Reference Rate Period 1 The reference rate period of focus for variable rate loans based on InterBank Offering Rates. Debt Instrument, Quarterly Principal Amortization Percentage Debt Instrument, Quarterly Principal Amortization Percentage Quarterly principal payments due as a percentage of the initial principal amount. Debt Instrument Redemption Price Percentage of Principal Amount Redeemable Using Equity Offering Proceeds Debt Instrument, Redemption Price, Percentage Convertible Debt [Abstract] Convertible Debt [Abstract] Holder Put Date, Earliest Debt Instrument Put Date Earliest Earliest date before maturity when the holds can put the outstanding debt instrument for repayment, in CCYY-MM-DD format. Underlying Shares (in shares) Debt Instrument, Convertible, Number of Equity Instruments Conversion Price Per Share Debt Instrument, Convertible, Conversion Price Conversion Price Per Share Threshold (dollars per share) Debt Instrument, Convertible, Stock Price Trigger Conversion Value in Excess of Principal Debt Instrument, Convertible, If-converted Value in Excess of Principal Conversion rights, minimum number of trading days (in days) Debt Instrument, Convertible, Threshold Trading Days Conversion rights, consecutive trading period (in days) Debt Instrument, Convertible, Threshold Consecutive Trading Days Conversion rights, threshold percentage of applicable conversion price (in hundredths) Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Share Price (in dollars per share) Share Price Redeemable convertible notes Temporary Equity, Carrying Amount, Attributable to Parent Equity component of convertible debt included in additional paid in capital Debt Instrument, Convertible, Carrying Amount of Equity Component Conversion rate (in shares) Debt Instrument, Convertible, Conversion Ratio Principal amount per debenture used In conversion rate Principal Amount Per Debenture Used In Conversion Rate The principal amount per debenture used in conversion rate Conversion rights, maximum percentage of product of stock price and conversion rate (in hundredths) Convertible Debt Percentage Of Product Of Stock Price And Conversion Rate Factor multiplied by the product of the closing price of common stock and the then applicable conversion rate compared to the trading price of the notes for determining eligibility of holders to convert their notes. Make whole premium discount rate Make whole premium discount rate Discount rate use to calculate the "make-whole premium" which is the payment in cash equal to the present value of all remaining scheduled payments of interest from the redemption date through maturity date. Debt Instrument Issued At A Discount Original Principal Amount Debt Instrument Issued At A Discount Original Principal Amount For debt issued at a discount, the original principal amount of the debt to be accreted up to the face value of the note at maturity or earlier redemption. Debt Instrument Discounted Issue Price Per Debenture Debt Instrument Discounted Issue Price Per Debenture The price per debenture at which debt is issued, generally at a discount to be accreted up to face value. Debt Instrument, Scheduled Accreted Principal Amount Debt Instrument, Scheduled Accreted Principal Amount With respect to discounted debt liabilities, the scheduled redemption value at a given point in time. Interest Costs Incurred [Abstract] Interest Costs Incurred [Abstract] Contractual interest expense Interest Expense, Debt, Excluding Amortization Amortization of debt discount and issuance costs Amortization of Debt Issuance Costs and Discounts Convertible note interest expense Interest Expense, Debt Other Long-term Debt [Abstract] Other Long-term Debt [Abstract] Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Percentage of collateral to face value of issued and ouststanding credit facility Percentage Of Collateral To Face Value Of Issued And Outstanding Credit Facility Percentage of collateral to face value of issued and outstanding credit facility Margin on variable rate financing (in hundredths) Draw on facility agreement Proceeds from Lines of Credit Line of Credit Facility, Remaining Borrowing Capacity Line of Credit Facility, Remaining Borrowing Capacity Face value of debt extinguished Proceeds from Issuance of Other Long-term Debt Proceeds from Issuance of Other Long-term Debt Debt Instrument Variable Reference Rate Period 1 Tax benefit due to arrangements allowing computation of tax provision at rates below local statutory rates Income Tax Holiday, Aggregate Dollar Amount Tax benefit per diluted share due to arrangements allowing computation of tax provision at rates below local statutory rates (in dollars per share) Income Tax Holiday, Income Tax Benefits Per Share Schedule of Revenues from External Customers and Long-Lived Assets [Table] Geographical Geographical [Axis] Geographical Geographical [Domain] Singapore SINGAPORE China CHINA United States UNITED STATES Asia Pacific (excluding China, Taiwan and Japan) Other Asia Pacific [Member] Other Asia Pacific exclude China, Taiwan and Japan Taiwan TAIWAN, PROVINCE OF CHINA Europe Europe [Member] Japan JAPAN Other Other Foreign Countries [Member] An unspecified group of foreign countries about which segment information is provided by the entity. Revenues from External Customers and Long-Lived Assets [Line Items] Geographic Areas, Revenues from External Customers [Abstract] Geographic Areas, Revenues from External Customers [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Property, plant, and equipment, net Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Beginning unrecognized tax benefits Unrecognized Tax Benefits Settlements with tax authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Lapse of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Increases related to tax positions taken during current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Increases related to tax positions from prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Foreign currency translation (decreases) to tax positions Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation Foreign currency translation increases to tax positions Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation Decreases related to tax positions from prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Ending unrecognized tax benefits Unrecognized tax benefits that affect our effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Income Tax Examination, Penalties and Interest Accrued [Abstract] Income Tax Examination, Penalties and Interest Accrued [Abstract] Accrued interest and penalties related to uncertain tax positions Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Maximum life of finite-lived intangible assets (in years) Finite-Lived Intangible Asset, Useful Life Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Benchmark Concentration Risk Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Net Sales Sales Revenue, Net [Member] Concentration Risk by Type Concentration Risk Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Product Concentration Risk Product Concentration Risk [Member] Customer Concentration Risk Customer Concentration Risk [Member] Concentration Risk by Market Concentration Risk by Market [Axis] Concentration Risk by Market [Axis] Concentration Risk Market Concentration Risk Market [Domain] Concentration Risk Market [Domain] Compute and graphics Compute Market [Member] Products sold into the computing market including personal systems, notebooks, workstations and graphics. Mobile Mobile Market 2 [Member] Products sold into mobile products, such as smart phones, feature phones, and tablet mobile devices. SSDs and other storage Solid State Drives And Other Storage Market [Member] Micron-manufactured solid state drives along with components sold to OEMs and other users whose end use is data storage. Automotive, industrial, medical, and other embedded AIM And Other Embedded Market [Member] Products sold into the automotive, industrial, and medical markets as well as consumer electronics and other components embedded into our customers' products. Server Server Market [Member] Products sold into cloud server markets. Kingston Kingston [Member] Kingston Technology, Inc. Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration risk, percentage of net sales (in hundredths) Concentration Risk, Percentage New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Recently Issued Accounting Standards Description of New Accounting Pronouncements Not yet Adopted [Text Block] Entity Which We Partner With In Investment Entity Which We Partner With In Investment [Axis] Entity Which We Partner With In Investment [Axis] Entity Which We Partner With In Investment Entity Which We Partner With In Investment [Domain] [Domain] for Entity Which We Partner With In Investment [Axis] Nanya Nanya [Member] Nanya Technology Corporation ("Nanya") from which other receivables are recorded for amounts related to DRAM development costs under a cost sharing agreement. Income Statement Location Selling, general, and administrative Selling, General and Administrative Expenses [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Sale of Stock Sale of Stock [Axis] Sale of Stock Sale of Stock [Domain] Private Placement Private Placement [Member] 2021 MSAC senior secured term loan Secured Debt 7 [Member] Secured Debt 7 - Collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets. 2022 Secured Notes NTD Term Loan Secured Notes NTD Term Loan Due 2021 [Member] The company's secured term loan borrowing in New Taiwan Dollars Due in 2021 [Member] TAIBOR Taipei Interbank Offered Rate TAIBOR [Member] Interest rate at which a bank borrows funds from other banks in the Taipei Interbank market. [Member] Inotera Stock Equity Securities [Member] MSTW Micron Semiconductor Taiwan Co. Ltd. [Member] Micron Semiconductor Taiwan Co. Ltd., a consolidated subsidiary of Micron Technology, Inc. Application Period Application Period [Axis] The period of time to which circumstances, covenants, or other items are applicable or otherwise measured, monitored, or restricted. Application Period Application Period [Domain] [Domain] for The period of time to which circumstances, covenants, or other items are applicable or otherwise measured, monitored, or restricted. Debt Covenant Period 2017_2018 Debt Covenant Period 2017_2018 [Member] Debt Covenant Period 2017_2018 [Member] Debt Covenant Period 2019_2021 Debt Covenant Period 2019_2021 [Member] Debt Covenant Period 2019_2021 [Member] Debt Covenant Period 2019_2020 Debt Covenant Period 2019_2020 [Member] Debt Covenant Period 2019_2020 [Member] Debt Covenant Period 2021 Debt Covenant Period 2021 [Member] Debt Covenant Period 2021 [Member] Debt Covenant Period 2017 Debt Covenant Period 2017 [Member] Debt Covenant Period 2017 [Member] Debt Covenant Period 2018_2019 Debt Covenant Period 2018_2019 [Member] Debt Covenant Period 2018_2019 [Member] Debt Covenant Period 2020_2021 Debt Covenant Period 2020_2021 [Member] Debt Covenant Period 2020_2021 [Member] Acquisition of Inotera Equity interest in Inotera immediately prior to acquisition Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage Percentage interest held by Nanya prior to Inotera Acquisition (in hundredths) Equity Method Investment Ownership Percentage Held By Third Party Ownership percentage held by a third party in an entity in which registrant also owns an equity interest. Percentage of Inotera voting interest acquired Business Acquisition, Percentage of Voting Interests Acquired Acquisition related costs Business Combination, Acquisition Related Costs Gain on difference between fair value and carrying value of pre-acquisition equity interests in Inotera Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain Micron Shares Equity [Abstract] Number of Micron Shares issued to Nanya as consideration for Inotera shares not already owned (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Cash received from selling Micron Shares Proceeds from Issuance of Private Placement Discount for lack of transferability on Micron Shares issued to Nanya Fair Value Inputs, Discount for Lack of Marketability, Value The adjustment to the issuance date trading price fair value of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination related to a discount for lack of marketability. The adjustment to fair value for lack of ability to convert business interests into cash quickly. Consideration Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination [Abstract] Cash paid for Inotera Acquisition Payments to Acquire Businesses, Gross Less cash received from selling Micron Shares Net cash paid for Inotera Acquisition Payments to Acquire Businesses, Net of Proceeds from Sale of Stock Total payments made to acquire an entity net of proceeds received from acquisition-related sale of stock. Fair value of our previously-held equity interest in Inotera Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value Fair value of Micron Shares exchanged for Inotera shares Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Other Business Combination, Consideration Transferred, Other Payments attributed to intercompany balances with Inotera Business Combination, Consideration Transferred, Settlement Of Receivables (Payables) With Acquiree, Net The amount of net receivables (payables) between the acquirer and the acquiree that are settled and treated as consideration (or a reduction thereof) for purchase accounting. Total fair value of consideration for Inotera including previously held equity interests Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination Assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Cash and equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Property, plant, and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Deferred tax assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent Goodwill Goodwill Other noncurrent assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets Accounts payable and accrued expenses Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable and Accrued Liabilities Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. Also includes taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations. Debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Other noncurrent liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total assets acquired and liabilities assumed, including goodwill Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Unaudited Pro Forma Information Business Acquisition, Pro Forma Information [Abstract] Net sales Business Acquisition, Pro Forma Revenue Net income (loss) Business Acquisition, Pro Forma Net Income (Loss), Including Portion Attributable to Noncontrolling Interest The pro forma net income or loss for the period net of tax including portion attributable to noncontrolling interest as if the business combination or combinations had been completed at the beginning of a period. Net income (loss) attributable to Micron Business Acquisition, Pro Forma Net Income (Loss) Basic Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted Business Acquisition, Pro Forma Earnings Per Share, Diluted Extinguishment of Debt Disclosures [Abstract] Principle amount of debt repurchased Decrease in carrying amount of debt repurchased Repayments of repurchased debt Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities Loss on restructure of debt Gain (Loss) on Extinguishment of Debt Debt Instrument, covenant, ratio of debt to fair value of equipment Debt Instrument, covenant, ratio of debt to fair value of Equipment Ratio of the outstanding debt divided by the fair value of the equipment collateralizing the loan. 2021 MSTW Senior Secured Term Loan Business Combination, Consideration Transferred [Abstract] 2021 Term loan draw Business Combination, Consideration Transferred, Liabilities Incurred Percentage of post-acquisition MTTW shares subject to collateralization Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA Ratio of total debt divided by earnings before interest, taxes, depreciation, and amortization (EBITDA) required to comply with debt covenants. Debt Instrument, Covenant, Tangible Net Worth Debt Instrument, Covenant, Tangible Net Worth Net worth of an entity excluding value derived from intangible assets including, but not limited to, intellectual property and goodwill. Threshold of total tangible assets less total liabilities required to comply with debt covenants. Debt Instrument, Covenant Compliance, Penalty Interest Percent Debt Instrument, Covenant Compliance, Penalty Interest Percent In the event of non-compliance with debt covenants, the interest percentage that will be charged in addition to the stated or variable rate. Schedule of the Estimated Useful Lives of Property, Plant, and Equipment [Table] Change in Accounting Estimate by Type Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate, Type Change in Accounting Estimate, Type [Domain] Service Life Service Life [Member] Property, plant and equipment useful life (in years) Property, Plant and Equipment, Useful Life Statement of Comprehensive Income [Abstract] Statement, Equity Components Equity Components [Axis] Equity Component Equity Component [Domain] Cumulative Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Gains (Losses) on Derivative Instruments, Net Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Gains (Losses) on Investments, Net Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Pension Liability Adjustments Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Parent Parent [Member] Statement [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, before Tax Amount reclassified out of accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Tax effects Other Comprehensive Income (Loss), Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Fair Value Disclosures [Abstract] Fair and carrying value of debt instruments [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis Measurement Basis [Axis] Measurement Basis Fair Value Measurement [Domain] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Notes and MMJ creditor installment payments Reorganization Obligation And Other Notes [Member] The liabilities owed to secured and unsecured creditors subject to a reorganization plan as part of bankruptcy proceedings combined with senior and other notes payable. Convertible Notes Fair value disclosure [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value of Notes and MMJ creditor installment payments Notes Payable, Fair Value Disclosure Fair Value of Convertible notes Convertible Debt, Fair Value Disclosures Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Other Other Equity Method Invetments [Member] Other Equity Method Invetments. Other Non-Operating Income Expense Net Other Non-Operating Income Expense Net [Member] Primary financial statement caption in which reported facts about other non-operating income (expense) not separately disclosed have been included. Variable interest entity, not primary beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Income Taxes Income Taxes [Axis] Income taxes Income taxes [Domain] Income Tax Expense (Benefit), Adjustment of Deferred Tax (Asset) Liability Income Tax Expense (Benefit), Adjustment of Deferred Tax (Asset) Liability [Member] Amount of income tax expense (benefit) attributable to an adjustment of a deferred tax liability or asset. Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Investment Balance Equity Method Investments Ownership Percentage (in hundredths) Equity Method Investment, Ownership Percentage Inotera investment balance, substantially all of max exposure to loss, unconsolidated VIEs Variable Interest Entity Entity Maximum Loss Exposure Amount From Investment Balance The reporting entity's maximum amount of exposure to loss from its investment balance as a result of its involvement with the Variable Interest Entity (VIE). Equity in net income (loss) of equity method investees, net of tax Income (Loss) from Equity Method Investments Equity Method Investment, Summarized Financial Information [Abstract] Equity Method Investment, Summarized Financial Information, Assets [Abstract] Equity Method Investment, Summarized Financial Information, Assets [Abstract] Current assets Equity Method Investment, Summarized Financial Information, Current Assets Noncurrent assets Equity Method Investment, Summarized Financial Information, Noncurrent Assets Equity Method Investment, Summarized Financial Information, Liabilities [Abstract] Equity Method Investment, Summarized Financial Information, Liabilities [Abstract] Current liabilities Equity Method Investment, Summarized Financial Information, Current Liabilities Noncurrent liabilities Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] Net sales Equity Method Investment, Summarized Financial Information, Revenue Gross margin Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) Operating income Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations Net income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Number of shares issued by Inotera Sale of Stock, Number of Shares Issued in Transaction Stock price per share for equity issuance (NTD per share) Sale of Stock, Price Per Share Inotera ownership percentage before transaction Sale of Stock, Percentage of Ownership before Transaction Inotera ownership percentage after its stock sale transaction Sale of Stock, Percentage of Ownership after Transaction Gain from issuance of Inotera shares Gain (Loss) on Sale of Previously Unissued Stock by Equity Investee Ownership percentage after stock transactions during period (in hundredths) Market value of equity interests Equity Method Investment, Quoted Market Value Quoted market price per share of investee stock Equity Method Investment, Quoted Market Price Per Share This item represents the quoted market price per share of each identified investment accounted for under the equity method of accounting based for those investments in common stock for which a quoted market price is available. Amount in accumulated other comprehensive income (loss) for cumulative translation adjustments on its investment Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Other than temporary impairment in Tera Probe Equity Method Investment, Other than Temporary Impairment Difference between cost of Tera Probe investment and underlying equity Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Weighted-average period for remaining Tera Probe amortization (in years) Equity Method Investment Difference Between Carrying Amount And Underlying Equity Remaining Amortization Period Item represents the weighted average number of years over which the amortization of the difference, between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee is being recognized. Gain from disposition of interest in Aptina Equity Method Investment, Realized Gain (Loss) on Disposal Statement [Table] Cash and Cash Equivalents Cash and Cash Equivalents [Member] MMJ Group MMJ Group [Member] MMJ and it's subsidiaries [Member] IM Flash Technologies, LLC IM Flash Technologies LLC [Member] IM Flash Technologies, LLC is a joint venture with Intel, which is consolidated into the financial statements of the Company. In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either does not have equity investors with voting rights or has equity investors that do not provide sufficient financial resources for the entity to support its activities. Restrictions for Consolidated and Unconsolidated Subsidiaries [Abstract] Restrictions for Consolidated and Unconsolidated Subsidiaries [Abstract] Amount of Restricted Net Assets Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries Retained Earnings Note Disclosure [Abstract] Retained Earnings Note Disclosure [Abstract] Undistributed Earnings from Equity Method Investees Retained Earnings, Undistributed Earnings from Equity Method Investees Commitments and Contingencies Disclosure [Abstract] Minimum Future Operating Lease Commitments Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Temporary Equity [Abstract] Redeemable Convertible Notes Temporary Equity [Table Text Block] Segment Reconciliation [Abstract] Product Sales Disclosure Of Entity Wide Information Revenue From External Customers By Products And Services [Text Block] This element may be used to capture the complete disclosure about entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. Other Income and Expenses [Abstract] Other Operating (Income) Expense, Net Other Operating Income and Expense [Text Block] Significant Accounting Policies Significant Accounting Policies [Text Block] Defined Contribution Plan [Table] Defined Contribution Plan [Table] Defined Contribution Plan Type Defined Contribution Plan Type [Axis] Defined Contribution Plan Type Defined Contribution Plan Type [Domain] 401(k) plans United States Postretirement Benefit Plan of US Entity [Member] Defined Contribution Plan Disclosure [Line Items] Defined Contribution Plan Disclosure [Line Items] Maximum annual contributions per employee (in hundredths) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Maximum employer matching contribution, percent of employees' eligible earnings (in hundredths) Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Defined contribution plan contribution expense Defined Contribution Plan, Cost Recognized Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Intangible Assets and Goodwill Schedule of Intangible Assets and Goodwill [Table Text Block] Debt Debt and Capital Leases Disclosures [Text Block] Cash and Investments Cash, Cash Equivalents, and Marketable Securities [Text Block] Derivative Instrument Detail [Abstract] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Contingencies Contingencies Disclosure [Text Block] Recently Adopted Accounting Standards New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Loans Payable [Member] Loans Payable [Member] Long-term Debt, by Maturity [Abstract] Long-term Debt, Fiscal Year Maturity [Abstract] 2017 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2018 Long-term Debt, Maturities, Repayments of Principal in Year Two 2019 Long-term Debt, Maturities, Repayments of Principal in Year Three 2020 Long-term Debt, Maturities, Repayments of Principal in Year Four 2021 Long-term Debt, Maturities, Repayments of Principal in Year Five 2022 and thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Notes Payable Long-term Debt Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2017 Capital Leases, Future Minimum Payments Due, Next Twelve Months 2018 Capital Leases, Future Minimum Payments Due in Two Years 2019 Capital Leases, Future Minimum Payments Due in Three Years 2020 Capital Leases, Future Minimum Payments Due in Four Years 2021 Capital Leases, Future Minimum Payments Due in Five Years 2022 and thereafter Capital Leases, Future Minimum Payments Due Thereafter Capital Leases, Future Minimum Payments, Interest Included in Payments Capital Leases, Future Minimum Payments, Interest Included in Payments Capital Lease Obligations Capital Lease Obligations Estimated fair value and carrying value of debt instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Schedule of Property, Plant, and Equipment Property, Plant and Equipment [Table Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Noncontrolling Interest Noncontrolling Interest [Member] Additional Capital Additional Paid-in Capital [Member] Variable Interest Entities Variable Interest Entities [Axis] Variable Interest Entity, Classification Variable Interest Entity, Classification [Domain] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] MP Mask Technology Center, LLC MP Mask Technology Center LLC [Member] MP Mask Technology Center, LLC is a joint venture with Photronics, Inc., which is consolidated into the financial statements of the Company. In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either does not have equity investors with voting rights or has equity investors that do not provide sufficient financial resources for the entity to support its activities. Other Consolidated Entities Other Consolidated Entities [Member] Other Consolidated Entities [Member] Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. Rexchip Electronics Corporation [Member] Rexchip Electronics Corporation (“Rexchip”), a Taiwanese corporation originally formed as a manufacturing joint venture by Elpida and Powerchip Technology Corporation, a Taiwanese corporation (“Powerchip”). Counterparty Name Counterparty Name [Axis] Counterparty Name Counterparty Name [Domain] Collaborative Arrangement Process Design and Process Development Collaborative Arrangement Process Design and Process Development [Member] Contractual arrangement for process design and process development that involves two or more parties that both: (i) actively participate in a joint operating activity and (ii) are exposed to significant risks and rewards that depend on the commercial success of the joint operating activity. Non-Trade Sales Collaborative Arrangement, Product [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Noncontrolling interests in subsidiaries Stockholders' Equity Attributable to Noncontrolling Interest Variable interest entity, ownership percentage by noncontrolling owners (in hundredths) Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Ownership percentage after stock transactions during period (in hundredths) Noncontrolling Interest, Ownership Percentage by Parent R and D expenses reduced by reimbursements from Intel Research and Development Expense Noncontrolling Interest Items [Abstract] IMFT distributions to Micron Variable Interest Entity Distributions To Parent Distributions from variable interest entity to parent reporting entity. IMFT distributions to Intel Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Micron contributions to IMFT Payments to Acquire Interest in Subsidiaries and Affiliates Intel contributions to IMFT Proceeds from Noncontrolling Interests Acquisition of noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Derivative Financial Instruments Indexed to, and Potentially Settled in, Entity's Own Stock, Equity [Abstract] Option Indexed to Issuer's Equity, Equity [Table] Option Indexed to Issuer's Equity, Equity [Table] Option Indexed to Issuer's Equity Option Indexed to Issuer's Equity [Axis] Option Indexed to Issuer's Equity, Type Option Indexed to Issuer's Equity, Type [Domain] Call Option Call Option [Member] Position Position [Axis] Position Position [Domain] Purchased options Long [Member] 2031A and 2031B convertible senior notes Convertible senior notes 2031A and 2031B [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. Includes the 2031A and 2031B notes. Option Indexed to Issuer's Equity [Line Items] Option Indexed to Issuer's Equity [Line Items] Cash paid for capped call transactions Option indexed to issuers equity cash paid The entity (the buyer) purchases call options that provide it with the right, but not the obligation, to buy from the seller, shares of the entity's stock at a specified price. Strike price (in dollars per share) Option Indexed to Issuer's Equity, Strike Price Cap Price Range Call Option Indexed to Issuer's Equity, capped ceiling The cap price on a call option indexed to the entities own stock. A payment or receipt is triggered if the entities stock price is above the initial strike price with maximum proceeds dictated by the stated cap price. Underlying Common Shares (in shares) Option Indexed to Issuer's Equity, Shares Value at Expiration Option Indexed To Issuers Equity Settlement Proceeds Upon the settlement of the capped call transaction, the amount represents the proceeds that could be received. Capped call settlement shares received Option Indexed to Issuer's Equity, Settlement Alternatives, Shares, at Fair Value Capped call settlement, dollar value of shares received Option Indexed to Issuer's Equity, Fair Value of Shares Received Fair value of shares received from settlement of options indexed to issuers equity. Treasury Stock, held (in shares) Treasury Stock, Common, Shares Treasury Stock, retired (in shares) Treasury Stock, Shares, Retired Business Combination, Step Acquisition [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Nanya and certain of its affiliates Scenario, Forecast Scenario, Forecast [Member] 2021 Convertible Notes 2021 Convertible Notes [Member] 2021 Convertible Notes issuable(ed) in a private placement with Nanya to partially fund the Inotera acquisition. Business Acquisition [Line Items] Business Acquisition [Line Items] Proposed Acquisition of Inotera [Abstract] Inotera Acquisition, Share Price Business Acquisition, Share Price Foreign Currency Exchange Rate, Translation Foreign Currency Exchange Rate, Translation Current Equity Ownership Percentage (in hundredths) Percentage interest held by a third party (in hundredths) Proposed Acquisition of Inotera, Acquisition Financing [Abstract] Aggregate consideration payable for Inotera shares not already owned Business Combination, Consideration Transferred Unused borrowing capacity on term loan Debt Instrument, Unused Borrowing Capacity, Amount Period between draw and initial payment on term loan Debt Instrument Period After Draw Prior To Initial Payment1 Period after draw prior to which initial installment payment is required. Value of equity interests issuable to Nanya at our option as consideration for Inotera shares not already owned Trading-day period used to derive average share value of equity interests issuable to Nanya Business Combination, Consideration Transferred, Equity Interests Trading Period The consecutive trading-day period over which the average closing stock price is utilized to determine the issue price. Number of days prior to the optional share issuance to Nanya that pricing is established Number of Days Prior to Share Issuance Pricing Established Number of days prior to a share issuance that the per share pricing is established. Minimum price per share of equity interests issuable to Nanya Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Per Share Price Per share price of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. Stated interest rate on potential convertible debt issuable to Nanya Value of convertible debt available to be issued to Nanya in lieu of equity Business Combination, Consideration Transferred, Convertible Debt Issued or Issuable Amount of convertible debt of the acquirer issued or issuable in consideration for the business combination. Product and process technology Technology-Based Intangible Assets [Member] Other Other Intangible Assets [Member] Amortizing assets [Line Items] Gross Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Product and process technology intangible asset capitalized during period Finite Lived Intangible Assets Cost Incurred To Purchase Or Create The amount of capitalized costs incurred in the period related to 1) intellectual property that has been acquired from third parties 2) the exclusive legal right granted by the government to the entity for its patented product and process technology and 3) technology-based intangible assets such as innovations or scientific advances that have not been patented. Product and process technology intangible asset capitalized during period, weighted-average useful lives (in years) Finite Lived Intangible Assets Capitalized During Period Weighted Average Useful Life The weighted-average useful lives of product and process technology intangible asset capitalized during the period. Amortization expense for intangible assets Amortization of Intangible Assets Annual amortization expense for intangible assets [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] 2017 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Five Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name Indefinite-lived Intangible Assets, Major Class Name [Domain] In-process R&D In Process Research and Development [Member] Non-amortizing assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Gross Amount Indefinite-Lived Intangible Assets (Excluding Goodwill) Intangible Assets, Net (Including Goodwill) [Abstract] Intangible Assets, Net (Including Goodwill) [Abstract] Intangible Assets, Gross (Excluding Goodwill) Intangible Assets, Gross (Excluding Goodwill) Other Nonoperating Income (Expense) [Abstract] Component of Other Income Expense, Nonoperating [Table] Component of Other Income Expense, Nonoperating [Table] Component of Other Income Expense, Nonoperating. Components of Other Non-Operating Income Expense Net Components of Other Non-Operating Income Expense Net [Axis] Components of Other Non-Operating Income Expense Net [Axis] Components of Other Nonoperating Income Expense Net [Domain] Components of Other Nonoperating Income Expense Net [Domain] Components of Other Nonoperating Income Expense Net [Domain] Indemnification Receivable Writeoff Indemnification Receivable Writeoff [Member] Indemnification Receivable Writeoff [Member] Component of Other Income Expense, Nonoperating [Line Items] Component of Other Income Expense, Nonoperating [Line Items] [Line Items] for Component of Other Income Expense, Nonoperating. Gain (loss) from changes in currency exchange rates Foreign Currency Transaction Gain (Loss), before Tax 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. Other non-operating income (expense), net Other Nonoperating Income (Expense) Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Schedule of Results by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Valuation Allowance [Table] Valuation Allowance [Table] Valuation Allowance by Deferred Tax Asset Valuation Allowance by Deferred Tax Asset [Axis] Deferred Tax Asset Deferred Tax Asset [Domain] Valuation Allowance, Operating Loss Carryforwards Valuation Allowance, Operating Loss Carryforwards [Member] U.S. Japan National Tax Agency, Japan [Member] Other foreign subsidiaries member Other foreign subsidiaries member [Member] Other foreign subsidiaries member [Member] Valuation Allowance [Line Items] Valuation Allowance [Line Items] Valuation allowance Deferred Tax Assets, Valuation Allowance Net operating loss carryforwards, valuation allowance Operating Loss Carryforwards, Valuation Allowance Changes in valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Total IM Flash and MP Mask assets and liabilities Schedule of Variable Interest Entities [Table Text Block] IM Flash's distributions to, and contributions from, shareholders Variable Interest Entity Distributions To And Contributions From Shareholders [Table Text Block] Tabular disclosure of distributions to, and contributions from, shareholders related to Consolidated VIEs of the entity. Schedule of Options Indexed to Issuer's Equity Schedule of Options Indexed to Issuer's Equity [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule Of Noncontrolling Interests In Subsidiaries Noncontrolling Interest Disclosure [Text Block] Income tax (provision) benefit, income tax reconciliation [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] U.S. federal income tax (provision) benefit at statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Change in valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Change in unrecognized tax benefits Effective Income Tax Rate Reconciliation, Tax Contingency, Amount Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount State taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Noncontrolling investment transactions Effective Income Tax Rate Reconciliation, Disposition of Asset, Amount Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Income tax (provision) benefit Income Tax Expense (Benefit) Schedule of Other Operating (Income) Expense, Net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Equity Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Product Sales Revenue from External Customers by Products and Services [Table Text Block] Statement of Financial Position [Abstract] Assets Assets [Abstract] Receivables Receivables, Net, Current Inventories Other current assets Other Assets, Current Total current assets Assets, Current Equity method investments Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Deferred tax assets Deferred Income Tax Assets, Net Deferred tax assets Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Other noncurrent assets Other Assets, Noncurrent Total assets Assets Liabilities and equity Liabilities and Equity [Abstract] Accounts payable and accrued expenses Deferred income Deferred Revenue, Current Total current liabilities Liabilities, Current Other noncurrent liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Micron shareholders' equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.10 par value, 3,000 shares authorized, 1,094 shares issued and outstanding (1,084 as of September 3, 2015) Common Stock, Value, Issued Additional capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock, 54 shares held (45 as of September 3, 2015) Treasury Stock, Common, Value Accumulated other comprehensive income (loss) Total Micron shareholders' equity Stockholders' Equity Attributable to Parent Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Other Non-Operating Income (Expense), Net Other Nonoperating Income and Expense [Text Block] Certain Concentrations Concentration Risk Disclosure [Text Block] Income Statement [Abstract] Cost of goods sold Cost of Goods and Services Sold Gross margin Selling, general, and administrative Selling, General and Administrative Expense Research and development Restructure and asset impairments Other operating (income) expense, net Operating income Interest income Investment Income, Net Interest expense Interest Expense Other non-operating income (expense), net Income (loss) before income taxes, net income (loss) attributable to noncontrolling interests, and equity in net income (loss) of equity method investees Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Equity in net income (loss) of equity method investees Net income (loss) Net income (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Micron Number of shares used in per share calculations Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Unrecorded Unconditional Purchase Obligation [Table] Unrecorded Unconditional Purchase Obligation [Table] Capital Addition Purchase Commitments Capital Addition Purchase Commitments [Member] Unrecorded Unconditional Purchase Obligation [Line Items] Unrecorded Unconditional Purchase Obligation [Line Items] Commitments for acquisition of property, plant, and equipment Unrecorded Unconditional Purchase Obligation Operating Leases, Rent Expense, Net [Abstract] Operating Leases, Rent Expense, Net [Abstract] Rent expense Operating Leases, Rent Expense Operating Leases, Future Minimum Payments Due [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2017 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2018 Operating Leases, Future Minimum Payments, Due in Two Years 2019 Operating Leases, Future Minimum Payments, Due in Three Years 2020 Operating Leases, Future Minimum Payments, Due in Four Years 2021 Operating Leases, Future Minimum Payments, Due in Five Years 2022 and thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total operating lease commitments Operating Leases, Future Minimum Payments Due Intangible Assets and Goodwill Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Entity-Wide Information, Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Other Other Product Sales [Member] Net other product sales to external customers. Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Schedule option activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Stock options granted and assumptions used in Black-Scholes option valuation model Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule restricted stock awards activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Stock-based compensation expense by caption Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Defined Benefit Plan, Benefit Obligation Defined Benefit Plan, Benefit Obligation Defined Benefit Plan, Fair Value of Plan Assets Defined Benefit Plan, Fair Value of Plan Assets Component Of Other Operating Income Expense Net [Table] Table of each detailed component of other operating income and expenses. Rambus Settlement Rambus Settlement [Member] The settlement agreement signed with Rambus which ends all outstanding litigation and which provides Micron consolidated with a license to Rambus intellectual property. Component Of Operating Other Income And Expense Net [Line Items] Component Of Operating Other income And Expense Net [Line Items] 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. (Gain) loss on disposition of property, plant, and equipment Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Rambus settlement Other Other Other Operating Income Expense Net The net of other operating income and other operating expense, not previously categorized, from items that are associated with the entity's normal revenue producing operation. Other operating (income) expense, net Rambus Patent License Agreement Term Patent License Agreement Term of Agreement1 The stated length of time a patent license agreement is in effect, enforceable. Business Combinations [Abstract] Tidal Systems, Ltd. Tidal Systems, Ltd. [Member] Tidal Systems, Ltd. [Member] Payments to acquire Tidal In-process R&D recognized in Tidal acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Goodwill recognized from Tidal acquisition Goodwill, Acquired During Period Deferred tax liabilities recognized in Tidal acquisition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Income Taxes Income Tax Disclosure [Text Block] Commitments Commitments Disclosure [Text Block] Class of Stock Disclosures [Abstract] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Share Repurchase Program Share Repurchase Program [Axis] Share Repurchase Program Share Repurchase Program [Domain] Repurchases Authorized by the BOD Stock Repurchases Authorized By The Board Of Directors [Member] Shares of the entity's own stock purchased or authorized to be purchased by the Board of Directors in open market or negotiated transactions. Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Stock Repurchase Program, Authorized Amount Stock Repurchase Program, Authorized Amount Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Value, Acquired, Cost Method Earnings Per Share Earnings Per Share [Text Block] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Pension liability adjustments Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Gain (loss) on derivatives, net Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Gain (loss) on investments, net Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to Micron Comprehensive Income (Loss), Net of Tax, Attributable to Parent Proposed Acquisition of Inotera Subsequent Event, Pro Forma Business Combinations or Disposals [Text Block] Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] Total current assets Noncurrent assets (primarily property, plant and equipment) Assets, Noncurrent Total assets Liabilities Liabilities [Abstract] Total current liabilities Total liabilities Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract] Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest [Abstract] Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign U.S. Income (Loss) from Continuing Operations before Income Taxes, Domestic Income tax (provision) benefit Income Tax Expense (Benefit), Continuing Operations [Abstract] Current [Abstract] Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Foreign Current Foreign Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) U.S. federal Current Federal Tax Expense (Benefit) Total income tax (provision) benefit - current Current Income Tax Expense (Benefit) Deferred [Abstract] Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] U.S. federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Foreign Deferred Foreign Income Tax Expense (Benefit) Total income tax (provision) benefit - deferred Deferred Income Tax Expense (Benefit) Income tax (provision) benefit Schedule Of Income Taxes [Table] Schedule Of Income Taxes Table [Table] Schedule of income taxes table. Other current assets Other Current Assets [Member] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities [Member] Deferred tax assets Deferred Tax Assets, Net [Abstract] Net operating loss and tax credit carryforwards Deferred Tax Assets Operating Loss And Tax Credit Carryforwards The tax effect as of the balance sheet date of the excess of tax deductions over gross income in a year which cannot be used on the tax returns in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward to realize the deferred tax asset. Also includes the tax effect of the future tax deductions arising from unused tax credit carryforwards. Accrued salaries, wages, and benefits Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits Other accrued liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Other Deferred Tax Assets, Other Gross deferred tax assets Deferred Tax Assets, Gross Less valuation allowance Deferred tax assets, net of valuation allowance Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities Deferred Tax Liabilities, Gross [Abstract] Debt discount Deferred Tax Liabilities, Financing Arrangements Property, plant, and equipment Deferred Tax Liabilities, Property, Plant and Equipment Unremitted earnings on certain subsidiaries Deferred Tax Liabilities, Undistributed Foreign Earnings Product and process technology Deferred Tax Liabilities, Intangible Assets Other Deferred Tax Liabilities, Other Deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets Deferred Tax Assets, Net Reported as Deferred Tax Assets, Net, Classification [Abstract] Current deferred tax assets (included in other current assets) Deferred Tax Assets, Net of Valuation Allowance, Current Deferred tax assets, noncurrent Current deferred tax liabilities (included in accounts payable and accrued expenses) Deferred Tax Liabilities, Net, Current Deferred tax liabilities (included in other noncurrent liabilities) Deferred Income Tax Liabilities, Net Deferred tax liabilities, noncurrent (included in other noncurrent liabilities) Deferred Tax Liabilities, Net, Noncurrent Net tax benefits, Not Recorded as Deferred Tax Assets, Compensation and Benefits, Share-based Compensation Cost Net Tax Benefits, Not Recorded as Deferred Tax Assets, Compensation and Benefits, Share-based Compensation Cost Net tax benefits related to stock compensation not recorded as deferred tax assets. Remaining undistributed earnings of non-U.S. subsidiaries which have been indefinitely reinvested Undistributed Earnings of Foreign Subsidiaries Total basis differences for investments in indefinitely reinvested foreign subsidiaries Total Basis Differences For Investments In Indefinitely Reinvested Foreign Subsidiaries Total Basis Differences For Investments In Indefinitely Reinvested Foreign Subsidiaries Quarterly Financial Information Quarterly Financial Information [Text Block] Geographic Information Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Schedule of Derivative Instruments without Hedge Accounting Designation Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Derivative Instruments with Cash Flow Hedge Accounting Designation Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Other Restructuring Activities Other Restucturing Activities [Member] Other restucturing activities falling outside a major restucturing plan. Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Total expected restructuring costs for the 2016 Restructuring Plan Restructuring and Related Cost, Expected Cost Accrued restructuring reserve for the 2016 Restructuring Plan Restructuring Reserve, Current Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type Award Type [Axis] Equity Award Equity Award [Domain] Employee stock option Employee Stock Option [Member] Restricted stock award 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). Restricted stock award, performance and market based awards Restricted stock award, performance and market based awards [Member] Restricted stock award, performance and market based awards [Member] Award Date Award Date [Axis] Award Date Award Date [Domain] Awards Granted After February 2014 Awards Granted After February 2014 [Member] Awards Granted After February 2014 [Member] Awards Granted Prior to February 2014 Awards Granted Prior to February 2014 [Member] Awards granted prior to February 2014 [Member] Vesting Vesting [Axis] Vesting Vesting [Domain] Performance-based awards (Tranche One) Share-based Compensation Award, Tranche One [Member] Market-based awards (Tranche Two) Share-based Compensation Award, Tranche Two [Member] Service-based awards (Tranche Three) Share-based Compensation Award, Tranche Three [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of shares available for future awards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Stock option annual incremental vesting (percentage) Share-based Compensation Arrangement by Share-based Payment Award, Annual Vesting Ratio General percentage of incremental vesting for stock options beginning one year from the date of grant. General number of years from grant date until stock options expire (in years) Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Number of shares outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of shares granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of shares exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Number of shares canceled or expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Number of shares outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price per share for options outstanding (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price per share for options granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average exercise price per share for options exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price per share for options canceled or expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted average exercise price per share for options outstanding (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award Options, Outstanding, Additiona Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Weighted average remaining contractual term for options outstanding (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Aggregated intrinsic value for options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted average exercise price per share for options exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average remaining contractual term for options exercisable (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregated intrinsic value for options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Options expected to vest (in shares) Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Number Number of options expected to vest. Weighted average exercise price per share for options expected to vest (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Weighted Average Exercise Price The weighted average exercise price for options expected to vest. Weighted average remaining contractual term for options expected to vest (in years) Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Weighted Average Remaining Contractual Term The weighted average period between the balance-sheet date and expiration for all options expected to vest, which may be expressed in a decimal value for number of years. Aggregated intrinsic value for options expected to vest Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Intrinsic Value The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of options expected to vest under the option plan as of the balance-sheet date. Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract] Total intrinsic value for option exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Fair Value Assumptions, Method Used Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used Stock options granted (in shares) Weighted-average grant-date fair values per share of options granted during period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Average expected life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted-average expected volatility (in hundredths) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Weighted-average risk-free interest rate (in hundredths) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected dividends assumed in estimated option values Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments Restricted Stock Awards activity Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Number of Shares - Outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of Shares - Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Number of Shares - Restrictions lapsed (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Number of Shares - Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Number of Shares - Outstanding (in shares) Restricted awards expected to vest (in shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Expected To Vest Number The number of outstanding awards expected to vest on nonstock option plans (for example, phantom stock plan, stock appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares. Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant Date Fair Value Per Share - Outstanding (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 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 Weighted Average Grant Date Fair Value Per Share - Restrictions lapsed (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value Per Share - Cancelled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value Per Share - Outstanding (in dollars per share) Weighted Average Grant Date Fair Value for restricted awards expected to vest (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Weighted Average Grant Date Fair Value The weighted average fair value of nonvested awards that expected to vest on share-based plans excluding option plans (for example, phantom stock plan, stock appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares. Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Restricted stock awards granted (in shares) Weighted-average grant-date fair values per share (in dollars per share) Aggregate vesting-date fair value of shares vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Restricted award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Restricted award vesting rights, percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Schedule of income (loss) before income taxes, net income attributable to noncontrolling interests, and equity in net income (loss) of equity method investees Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Schedule of income tax (provision) benefit Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Income tax (provision) benefit computed using the U.S. federal statutory rate reconciled to income tax (provision) benefit Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Net operating loss carryforwards Summary of Operating Loss Carryforwards [Table Text Block] Federal and state tax credit carryforwards Summary of Tax Credit Carryforwards [Table Text Block] Reconciliation of beginning and ending amount of unrecognized tax benefits Summary of Income Tax Contingencies [Table Text Block] Variable Interest Entities Consolidation, Policy [Policy Text Block] Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] Receivables Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Common Stock Common Stock [Member] Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Total Micron Shareholders' Equity Noncontrolling Interests in Subsidiaries Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in shares) Common Stock, Shares, Outstanding Balance Other comprehensive income (loss), net Stock issued under stock plans (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock issued under stock plans Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Contributions from noncontrolling interests Noncontrolling Interest, Increase from Subsidiary Equity Issuance Distributions to noncontrolling interests Acquisitions of noncontrolling interests Repurchase and retirement of stock (in shares) Stock Repurchased and Retired During Period, Shares Repurchase and retirement of stock Stock Repurchased and Retired During Period, Value Settlement of capped calls and share retirement (in shares) Stock Received From Capped Call Settlement And Retired During Period, Shares The number of shares received from capped call settlement and retired during the period. Settlement of capped calls and share retirement Stock Received From Capped Call Settlement and Retired During Period, Value Equity impact of the value of stock received from capped call settlement and retired during period. The value of stock received from capped call settlement is recorded to additional paid in capital. Upon retirement, the excess of the value of the stock over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). Repurchase of treasury stock Settlement of capped calls Redeemable convertible notes Reclassification Adjustment For Convertible Debt In Mezzanine Reclassification adjustment for convertible debt in mezzanine related to accretion in redemption value of convertible debt and adjustment from equity to mezzanine, if debt is convertible. Exchange, conversion, and repurchase of convertible notes Balance (in shares) Balance Shareholder Rights Agreement, Purchase Discount Rights Received, Ratio Shareholder Rights Agreement, Purchase Discount Rights Received, Ratio Number of share purchase rights received for each common share held (as of a record date) which become exercisable upon change of ownership triggering events. Shareholder Rights Agreement, Beneficial Ownership Increase Trigger, Percent Shareholder Rights Agreement, Beneficial Ownership Increase Trigger, Percent The percent increase in ownership resulting in beneficial ownership (or adding to a beneficial ownership interest) resulting in a triggering of rights under a shareholder rights agreement, assuming other conditions are met. Shareholder Rights Agreement, Ownership Evaluation Period Shareholder Rights Agreement, Ownership Evaluation Period The period of time in which ownership increases by a beneficial owner (or group) exceeding the percentage increase trigger must occur in order to initiate shareholder agreement rights. Shareholder Rights Agreement, Beneficial Owner Status Trigger, Percent Shareholder Rights Agreement, Beneficial Owner Status Trigger, Percent The percentage threshold above which an equity holder (or group) becomes a beneficial owner. Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts, Notes, Loans and Financing Receivable [Line Items] Receivables [Abstract] Receivables, Net, Current [Abstract] Trade receivables Accounts Receivable, Net, Current Income and other taxes Income Taxes Receivable, Current Other Other Receivables Receivables Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Designation Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Hedging Relationship Hedging Relationship [Axis] Hedging Relationship Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Other comprehensive income Other Comprehensive Income (Loss) [Member] Derivative Instrument Derivative Instrument [Axis] Derivative Contract Derivative Contract [Domain] Foreign exchange contract Foreign Exchange Contract [Member] Convertible notes settlement obligations Convertible notes settlement obligations [Member] Convertible notes settlement obligations [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Net gains (losses) for derivative instruments without hedge accounting designation Derivative, Gain (Loss) on Derivative, Net Net gains (losses) recognized in other comprehensive income, effective portion Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Net gains (losses) reclassified from AOCI into earnings, effective portion Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Schedule of Other Nonoperating Income (Expense), Net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Accounts receivable Accounts Receivable [Member] Forward Contracts Forward Contracts [Member] Currency Currency [Axis] All Currencies All Currencies [Domain] Yen Japan, Yen Singapore dollar Singapore, Dollars Euro Euro Member Countries, Euro Other Currencies Other Currencies [Member] An aggregation of other currencies not specifically identified. Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional Disclosures [Abstract] Notional Disclosures [Abstract] Notional Amount Outstanding Derivative, Notional Amount Payments for Derivative and Hedge Investing Activities Payments for Derivative and Hedge Investing Activities The cash outflow for a derivative instruments or financial contracts that are either (1) without hedge accounting designation or (2) meet the hedge criteria as either a cash flow hedge, fair value hedge, or hedge of a net investment in a foreign operation. Derivative, Fair Value, Net [Abstract] Fair Value of Assets Derivative Asset, Fair Value, Gross Asset Fair Value of Liabilities Derivative Liability, Fair Value, Gross Liability Foreign Currency Cash Flow Hedges [Abstract] General maturity of non-designated currency forward contracts (in days) Maximum Remaining Maturity of Foreign Currency Derivatives General maturity of hedge contracts (in months) Maximum Length of Time, Foreign Currency Cash Flow Hedge Segment Information Segment Reporting Disclosure [Text Block] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common Stock, authorized shares (in shares) Common Stock, Shares Authorized Common Stock, issued (in shares) Common Stock, Shares, Issued Common Stock, outstanding (in shares) Schedule of Restructure and Related Costs Restructuring and Related Costs [Table Text Block] Equity Stockholders' Equity Note Disclosure [Text Block] Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation expense and amortization of intangible assets Amortization of debt discount and other costs Stock-based compensation Loss on restructure of debt (Gain) loss from currency hedges, net Equity in net income of equity method investees Gain from Inotera issuance of shares Gain (Loss) on Sale of Previously Unissued Stock by Subsidiary or Equity Investee, Nonoperating Income Gain from disposition of interest in Aptina Change in operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Inventories Increase (Decrease) in Inventories Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Deferred income taxes, net Increase (Decrease) in Deferred Income Taxes Other noncurrent liabilities Increase (Decrease) in Other Noncurrent Liabilities Other Other Operating Activities, Cash Flow Statement Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Expenditures for property, plant, and equipment Payments to Acquire Property, Plant, and Equipment Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Payments to settle hedging activities (Increase) decrease in restricted cash Increase (Decrease) in Restricted Cash Proceeds from sales and maturities of available-for-sale securities Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from settlement of hedging activities Proceeds for Derivative and Hedge Investing Activities The cash inflow for a derivative instruments or financial contracts that are either (1) without hedge accounting designation or (2) meet the hedge criteria as either a cash flow hedge, fair value hedge, or hedge of a net investment in a foreign operation. Cash received from disposition of interest in Aptina Proceeds from Sale of Equity Method Investments Other Payments for (Proceeds from) Other Investing Activities Net cash provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Proceeds from issuance of stock under equity plans Proceeds from Issuance or Sale of Equity Contributions from noncontrolling interests Repayments of debt Cash paid to acquire treasury stock Payments for Repurchase of Common Stock Acquisition of noncontrolling interests Payments to Noncontrolling Interests 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. Other Proceeds from (Payments for) Other Financing Activities Net cash provided by (used for) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Effect of changes in currency exchange rates on cash and equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase (decrease) in cash and equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and equivalents at beginning of period Cash and equivalents at end of period Supplemental disclosures Supplemental Cash Flow Information [Abstract] Income taxes paid, net Income Taxes Paid, Net Interest paid, net of amounts capitalized Interest Paid, Net Noncash investing and financing activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Exchange of convertible notes Debt Exchange Convertible Debt Face Amount Exchange of convertible notes. Acquisition of noncontrolling interest Notes Issued Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Net operating loss carryforwards Operating Loss Carryforwards Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Cost of Goods Sold Cost of Sales [Member] Research and development Research and Development Expense [Member] Other Other Expense [Member] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Stock compensation expense capitalized and remained in inventory Other Inventory, Capitalized Costs, Gross Total unrecognized compensation costs, net of estimated forfeitures, related to non-vested awards expected to be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average period that unrecognized compensation costs is expected to be recognized (in years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Events Subsequent to Original Issuance of Financial Statements (Unaudited) Subsequent Events [Text Block] Property, Plant, and Equipment Property, Plant and Equipment Disclosure [Text Block] Valuation and Qualifying Accounts [Abstract] Deferred Tax Asset Valuation Allowance Summary of Valuation Allowance [Table Text Block] Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Financial Statements [Table] Condensed Financial Statements [Table] Guarantor Obligations, Nature Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature Guarantor Obligations, Nature [Domain] Payment Guarantee of Subsidiary Debt Payment Guarantee of Subsidiary Debt [Member] Payment Guarantee of Subsidiary Debt [Member] Consolidated subsidiaries Consolidated Entities [Member] Condensed Financial Statements, Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Maximum exposure from guarantees to subsidiaries Guarantor Obligations, Maximum Exposure, Undiscounted Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Net cash provided by operating activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] (Payments) proceeds on loans to subsidiaries, net Proceeds From Repayment of Loans To Subsidiaries, Net Net proceeds (payments) from repayments by subsidiaries of intercompany loans. Cash paid for acquisitions Cash contributions to subsidiaries Payments For Additional Contributions In Subsidiaries The cash outflow associated with additional contributions to subsidiaries. Proceeds from sales of available-for-sale securities Proceeds from maturities of available-for-sale securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Cash distributions from subsidiaries Proceeds from Subsidiaries Distributions, Return of Capital Cash distributions received from consolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions classified as operating activities. Net cash provided by (used for) investing activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Payments of licensing obligations Payments to Acquire Intangible Assets Net cash provided by (used for) financing activities Net increase (decrease) in cash and equivalents Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statements, Captions [Line Items] Condensed Income Statements, Captions [Line Items] Interest income (expense), net Interest Income (Expense), Net Income from continuing operations before equity method investments, income taxes, and noncontrolling interest Equity in earnings (loss) of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Other comprehensive income (loss) Comprehensive income (loss) attributable to Micron Weighted Average Remaining Term (in years) Notes Payable Capital Lease Obligations Condensed Financial Information of the Registrant Condensed Financial Information of Parent Company Only Disclosure [Text Block] Schedule of Parent Debt Maturities of Parent Notes Payable and Future Minimum Lease Payments Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Notes and accounts receivable from subsidiaries Due from Affiliate, Current Investment In subsidiaries Investment In Subsidiaries Investments in subsidiaries which are eliminated upon consolidation. Noncurrent notes receivable from and prepaid expenses to subsidiaries Due from Affiliate, Noncurrent Short-term debt and accounts payable to subsidiaries Due to Affiliate, Current Other current liabilities Other Liabilities, Current Other equity Shareholders' Equity, Other Within a condensed balance sheet presentation, the sum of the components of equity not separately disclosed. Total Micron shareholders' equity Total liabilities and equity Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] Schedule II Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Valuation and Qualifying Accounts Disclosure [Table] Valuation and Qualifying Accounts Disclosure [Table] Valuation Allowances and Reserves Type Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves Valuation Allowances and Reserves [Domain] Deferred Tax Assets Valuation Allowance Valuation Allowance of Deferred Tax Assets [Member] Valuation and Qualifying Accounts Disclosure [Line Items] Valuation and Qualifying Accounts Disclosure [Line Items] Movement in Valuation Allowances and Reserves [Roll Forward] Movement in Valuation Allowances and Reserves [Roll Forward] Balance at Beginning of Year Valuation Allowances and Reserves, Balance Business Acquisitions Valuation Allowances and Reserves, Reserves of Businesses Acquired Charged (Credited) to Income Tax Provision Change in Deferred Tax Assets Valuation Allowance, Effect Of Income Tax Rate Reconciliation, Amount Change in the valuation allowance due to the amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Currency Translation and Charges to Other Accounts Valuation Allowances and Reserves, Additions for Charges to Cost and Expense Currency Translation and Charges to Other Accounts Valuation Allowances and Reserves, Deductions Balance at End of Year