Table Text Block [Abstract] Assets measured at fair value on a recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Estimated fair value and carrying value of debt instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Derivative Instruments, Gain (Loss) by Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other Operating Income (Expense) [Member] Other Operating Income (Expense) [Member] The total net amount of other operating income and other operating expense, not previously categorized, from items that are associated with the entity's normal revenue producing operation. Derivative Instruments, Gain (Loss) by Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Not Designated as Hedging Instrument [Member] Statement, Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Plan [Member] Scenario, Plan [Member] Scenario, Forecast [Member] Scenario, Forecast [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Elpida Memory, Inc. [Member] Elpida Memory, Inc. [Member] Details pertaining to acquisition of Elpida Memory, Inc. Rexchip Electronics Corporation [Member] 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”). Foreign Currency Exchange Rates [Axis] Foreign Currency Exchange Rates [Axis] Foreign Currency Exchange Rates [Axis] Exhange Rates [Domain] Exhange Rates [Domain] Exhange Rates [Domain] Yen Japan, Yen New Taiwan dollar Taiwan, New Dollars United States of America, Dollars United States of America, Dollars Guarantor Obligations by Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Payment Guarantee [Member] Payment Guarantee [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Payment Guarantee [Member] Subsequent Event [Member] Hedging Designation [Axis] Hedging Designation [Domain] Derivative Instrument Risk [Axis] Derivative Contract Type [Domain] Derivative Contract Type [Domain] Call Options Purchased [Member] Call Options Purchased [Member] Put Options Written [Member] Put Options Written [Member] Call Options Written [Member] Call Options Written [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Elpida Sponsor Agreement [Abstract] Business Combination, Description [Abstract] Business Acquisition and Reorganization Plan Payments, Total Cash Payments Business Acquisition and Reorganization Plan Payments, Total Cash Payments Funds deposited in escrow account Escrow Deposit Business Acquisition Cost Of Acquired Entity Cash Paid At Closing Business Acquisition Cost Of Acquired Entity Cash Paid At Closing Amount of cash paid to acquire the entity at closing. Percentage of equity acquired Business Acquisition, Percentage of Voting Interests Acquired Reorganization Plan Future Payments Reorganization Plan Future Payments Amount of cash to be paid after closing in satisfaction of the reorganization plan. Reorganization Plan Number of Annual Installment Payments Number of required annual payments in satisfaction of the reorganization plan. Reorganization payments, by maturity [Abstract] Reorganization payments, by maturity [Abstract] Reorganization payments, by maturity [Abstract] Reorganization Payment Year Three Amount of reorganization payments due in year three following the date of the latest balance sheet presented in the financial statements. Reorganization Payment Year Four Amount of reorganization payments due in year four following the date of the latest balance sheet presented in the financial statements. Reorganization Payment Year Five Reorganization Payment Year Five Amount of reorganization payments due in year five following the date of the latest balance sheet presented in the financial statements. Reorganization Payment Year Six Reorganization Payment Year Six Amount of reorganization payments due in year six following the date of the latest balance sheet presented in the financial statements. Reorganization Payment Year Seven Reorganization Payment Year Seven Amount of reorganization payments due in year seven following the date of the latest balance sheet presented in the financial statements. Reorganization Payment Year Eight Reorganization Payment Year Eight Amount of reorganization payments due in year eight following the date of the latest balance sheet presented in the financial statements. Maximum exposure for potential payment guarantees of debtor-in-possession financing Maximum exposure for potential payment guarantees of debtor-in-possession financing Maximum exposure for potential payment guarantees of debtor-in-possession financing from third parties. Agreement to Provide Reasonable Efforts In Obtaining Financing Subsequent to Acquisition, Amount Agreement to Provide Reasonable Efforts In Obtaining Financing Subsequent to Acquisition, Amount Agreement to use reasonable efforts to assist the acquired entity in obtaining financing to continue debtor-in-possession financing from third parties for up to two months following the closing. Maximum exposure to payment guarantee or direct financing for Elpida capital expenditures Payment Guarantee or Direct Financing Amount Maximum exposure to provide a payment guarantee under certain circumstances or direct financing for capital expenditures. Maximum exposure to executed payment guarantees related to financing of capital expenditures Guarantor Obligations, Maximum Exposure, Undiscounted Payment guarantees related to financing of capital expenditures entered into during the period Guarantor Obligations, Payment Guarantee Entered Into During Period, Amount Guarantor Obligations, Payment Guarantee Entered Into During Period, Amount Elpida's ownership percentage in Rexchip Electronics Corp Business Acquisition, Equity Interest Held by Acquiree, Less than Wholly Owned Subsidiary, Ownership Percentage The ownership percentage of a less than wholly owned subsidiary held by the acquired entity in a business combination. Upon close of the business acquision, the interest will transfer to the acquiror. Rexchip Share Purchase Agreement [Abstract] Share Purchase Agreement [Abstract] Share Purchase Agreement [Abstract] Business Combination, Step Acquisition, Shares of Common Stock Purchased Business Combination, Step Acquisition, Shares of Common Stock Purchased In a business combination completed through a step acquisition, this is the number of shares acquired. Payments to Acquire Additional Interest in Subsidiaries Payments to Acquire Additional Interest in Subsidiaries Foreign Currency Exchange Rate, Translation Foreign Currency Exchange Rate, Translation Ownership percentage after stock transactions during period (in hundredths) Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Foreign Currency Derivatives [Abstract] Foreign Currency Derivatives [Abstract] Notional amount of call options purchased Notional Amount of Foreign Currency Derivative Purchase Contracts Weighted average strike price of call options purchased Derivative, Average Foreign Currency Option Strike Price Notional amount of foreign currency derivative sale contracts Notional Amount of Foreign Currency Derivative Sale Contracts Strike price of options sold Derivative, Foreign Currency Option Strike Price Derivative, Cost of Hedge Net of Cash Received From Sale of Options, Payments Within One Year Derivative, Cost of Hedge Net of Cash Received From Sale of Options, Payments Within One Year Derivative, Cost of Hedge Net of Cash Received From Sale of Options, Payments Within One Year of the balance sheet date Reduction of amount to be paid to the secured and unsecured creditors of the Elpida Companies due to the weakening of the yen Business Combination, Cost of Acquired Entity, Increase (Decrease) Due to Changes in Foreign Currency Denominated Acquisition Price Business Combination, Cost of Acquired Entity, Increase (Decrease) Due to Changes in Foreign Currency Denominated Acquisition Price Derivative Instruments, Gain (Loss) Recognized in Income Derivative Instruments, Gain (Loss) Recognized in Income, Net Statement of Other Comprehensive Income [Abstract] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Statement [Line Items] Statement [Line Items] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Cumulative foreign currency translation adjustments Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Gain (loss) on derivatives, net Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Gain (loss) on investments, net Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Pension liability adjustments Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Cumulative foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation 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 Pension liability adjustments Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Disclosure Text Block [Abstract] Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Fair Value Measurements Fair Value Disclosures [Text Block] Variable Interest Entities Disclosure [Text Block] Variable Interest Entities Disclosure [Text Block] Disclosure of variable interest entities (VIE), including, but not limited to the nature, purpose, size, and activities of the VIE, the carrying amount and classification of consolidated assets that are collateral for the VIE's obligations, lack of recourse if creditors (or beneficial interest holders) of a consolidated VIE have no recourse to the general credit of the primary beneficiary. An enterprise that holds a significant variable interest in a VIE but is not the primary beneficiary may disclose the nature of its involvement with the VIE and when that involvement began, the nature, purpose, size, and activities of the VIE and the enterprise's maximum exposure to loss as a result of its involvement with the VIE. Income Taxes Income Tax Disclosure [Text Block] Derivative Instrument Detail [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Designated as Hedging Instrument [Member] Derivatives, Fair Value, by Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Receivables [Member] Accounts Receivable [Member] Accounts payable and accrued expenses [Member] Accounts Payable [Member] Forward contracts [Member] Forward Contracts [Member] Options [Member] Foreign Exchange Option [Member] Options Written [Member] Options Written [Member] A category that identifies open option contracts written. Investment Geographic Region [Axis] Investment Geographic Region [Axis] Investment Geographic Region [Domain] Investment Geographic Region [Domain] Euro Euro Member Countries, Euro Singapore dollar Singapore, Dollars Shekel Israel, New Shekels Other [Member] All Other Currencies [Member] All Other Currencies [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Notional Amount of Derivatives, by Category of Derivative [Abstract] Notional Amount Outstanding, Not Designated Notional Amount of Other Derivatives Not Designated as Hedging Instruments Notional Amount Outstanding Notional Amount of Cash Flow Hedge Instruments Derivative, Fair Value, Net [Abstract] Fair Value of Asset Derivative Asset, Fair Value, Gross Asset Fair Value of Liability Derivative Liability, Fair Value, Gross Liability Foreign Currency Cash Flow Hedges [Abstract] General maturity of hedge contracts (in days or months) Maximum Length of Time Hedged in Foreign Currency Cash Flow Hedge Schedule of Business Acquisitions, by Acquisition [Table] Elpida Memory, Inc. Business Combination Disclosure [Text Block] Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Debt Long-term Debt [Text Block] Income Tax Disclosure [Abstract] Income tax (provision) benefit Income Tax Expense (Benefit) [Abstract] Current [Abstract] Current Income Tax Expense (Benefit) [Abstract] Tax benefit related to favorable resolution of prior year tax matters Current Federal Tax Expense (Benefit) Inventories Inventory Disclosure [Text Block] Accounts Payable and Accrued Liabilities Disclosure Accounts Payable and Accrued Liabilities Disclosure [Text Block] Other Operating (Income) Expense, Net Other Operating (Income) Expense, Net Disclosure [Text Block] Description of the total net amount of other operating income and other operating expense, not previously categorized, from items that are associated with the entity's normal revenue producing operation. Policy Text Block [Abstract] Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Notes to Financial Statements [Abstract] Component Of Other Operating Income Expense Net [Table] Table of each detailed component of other operating income and expenses. Component Of Other Operating Income Expense Net [Axis] Component Of Other Operating Income Expense Net [Axis] The group of components of other operating income and expenses. Component Of Other Operating Income Expense Net [Domain] Component Of Other Operating Income And Expense Net [Domain] Name of each detailed component of other operating income and expense. Early termination of prepaid contributed lease by Transform [Member] Contract Termination [Member] Other Equity Method Investments, Names [Axis] Other Equity Method Investments, Names [Axis] Other Equity Method Investments, Names [Axis] Other Equity Method Investments, Names [Domain] Other Equity Method Investments, Names [Domain] [Domain] for Other Equity Method Investments, Names [Axis] Transform [Member] Transform [Member] Transform Solar Pty Limited, Inc., a subsidiary of Origin Energy Limited, in which the registrant owns a noncontrolling equity interest. 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 from changes in currency exchange rates Foreign Currency Transaction Gain (Loss), before Tax (Gain) loss on disposition of property, plant and equipment Gain (Loss) on Disposition of Property 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 Other Operating Income (Expense), Net Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Primary Beneficiary [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] IM Flash Technologies, LLC [Member] 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. MP Mask Technology Center, LLC [Member] 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. Variable Interest Entity [Line Items] Variable Interest Entity, Classification of Carrying Amount, Assets and Liabilities, Net [Abstract] Assets Assets [Abstract] Cash and equivalents Cash and Cash Equivalents, at Carrying Value Receivables Receivables, Net, Current Inventories Inventory, Net Other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Other noncurrent assets Other Assets, Noncurrent Noncurrent assets (primarily property, plant and equipment) Assets, Noncurrent Total assets Assets Liabilities Liabilities [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Deferred income Deferred Revenue, Current Equipment purchase contracts Equipment purchase contracts Short-term payables arising from purchases of equipment. Amount represents a short-term payable to equipment suppliers that was withheld until such time as the equipment is deemed to meet buyers' specifications. Current portion of long-term debt Long-term Debt, Current Maturities Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Other noncurrent liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Investments [Text Block] Cash, Cash Equivalents, and Marketable Securities [Text Block] Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule of earnings per share basic and diluted combined. Earnings Per Share Basic And Diluted [Line Items] Earnings per share, basic and diluted, line items. Earnings Per Share Reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Net loss available to Micron shareholders - Basic and diluted Net Income (Loss) Attributable to Parent Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted-average common shares outstanding - Basic and diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Loss per share: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Earnings Per Share Earnings Per Share [Text Block] Fair Value Disclosures [Abstract] Assets measured on a recurring and nonrecurring basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Assets measured on a recurring basis [Axis] Fair Value, Hierarchy [Axis] Assets measured on a recurring basis [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Money market funds [Member] Money Market Funds [Member] Commercial paper [Member] Commercial Paper [Member] Certificates of deposit [Member] Certificates of Deposit [Member] Government securities [Member] US Treasury and Government [Member] Corporate bonds [Member] Corporate Debt Securities [Member] Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Asset-backed securities [Member] Asset-backed Securities [Member] Marketable equity securities [Member] Equity Securities [Member] Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-term investments Available-for-sale Securities, Current Long-term marketable investments Available-for-sale Securities, Noncurrent Assets held for sale Assets Held-for-sale, Long Lived, Fair Value Disclosure Total assets measured at fair value on a recurring basis Assets, Fair Value Disclosure Variable Interest Entities Consolidation, Policy [Policy Text Block] 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) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Income Statement and Other Comprehensive Income Location [Domain] Other Comprehensive Income [Member] Other Comprehensive Income (Loss) [Member] Nondesignated [Member] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) Recognized in Income Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months Schedule of Other operating (income) expense, net Schedule Of Other Operating Income Expense Net [Table Text Block] Tabular Disclosure of the components of other income or expense. Sources of operating income that should be disclosed in this note, or in the income statement, include amounts earned from dispositions of property, plant and equipment, changes in currency exchange rates, and miscellaneous income or expense. Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Related Party Transactions, by Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Aptina [Member] Aptina [Member] Aptina Imaging Corporation, a previously wholly-owned subsidiary of the registrant of which the registrant owns a noncontrolling interest. Receivable Type [Axis] Receivable Type [Domain] Foreign Currency Hedges [Member] Foreign Currency Hedges [Member] For receivable balance, amount due to the revaluing of foreign currency hedges. For the payables, amount owed for the premium of hedges acquired. Legal Entity of Counterparty, Type [Axis] Legal Entity Type of Counterparty [Domain] Intel [Member] Intel [Member] Intel Corporation ("Intel"). Nanya Technology Corporation ('Nanya') [Member] Nanya [Member] Nanya Technology Corporation ("Nanya") from which other receivables are recorded for amounts related to DRAM development costs under a cost sharing agreement. Accounts, Notes, Loans and Financing Receivable [Line Items] Receivables [Abstract] Receivables, Net, Current [Abstract] Trade receivables (net of allowance for doubtful accounts of $4 and $5, respectively) Accounts Receivable, Net, Current Income and other taxes Income Taxes Receivable, Current Related party receivables Accounts Receivable, Related Parties, Current Other Other Receivables Receivables Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current 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, Equity [Axis] Option Indexed to Issuer's Equity [Axis] Option Indexed to Issuer's Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Purchased Call Option [Member] Purchased Call Option [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 2013 convertible senior notes [Member] Convertible Senior Notes Due 2013 [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 October 2013. Option Indexed to Issuer's Equity [Line Items] Option Indexed to Issuer's Equity [Line Items] Option indexed to issuer's equity, shares (in shares) Option Indexed to Issuer's Equity, Shares Option indexed to issuer's equity, strike price (in dollars per share) Option Indexed to Issuer's Equity, Strike Price Option Indexed to Issuer's Equity, capped ceiling 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 maximim proceeds dictated by the stated cap price. Option indexed to issuers equity cash received upon settlement Option indexed to issuers equity settlement cash received The cash received upon the cash settlement of the options the entity bought which indexed to the company's own stock. Income Statement [Abstract] Net sales Revenue, Net Cost of goods sold Cost of Goods and Services Sold Gross margin Gross Profit Selling, general and administrative Selling, General and Administrative Expense Research and development Research and Development Expense Other operating (income) expense, net Operating loss Operating Income (Loss) Interest income Investment Income, Interest Interest expense Interest Expense Other non-operating income (expense), net Other Nonoperating Income (Expense) Total loss before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax (provision) benefit Income Tax Expense (Benefit) Equity in net loss of equity method investees Income (Loss) from Equity Method Investments Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net loss attributable to Micron Number of shares used in per share calculations: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Business and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Domain] Service-based awards [Member] Service based awards [Member] Restricted Stock Awards with service restrictions which generally lapse either in one-fourth or one-third increments during each year of employment after the grant. Performance-based shares [Member] Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of shares of common stock reserved for issuance for stock options and restricted stock awards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Number of shares subject to outstanding awards (in shares) Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Subject To Outstanding Awards The number of authorized shares that are subject to outstanding awards such as: 1) the number of shares already issued upon exercise of options or other share-based awards under the plan, and 2) shares reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. 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 Options Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Number of shares granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Weighted average grant date fair value per share for options granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Fair Value Assumptions, Method Used Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used 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 Restricted Stock Awards 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 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 Fair and carrying value of debt instruments [Table] Fair Value, by Balance Sheet Grouping [Table] Fair and carrying value of debt instruments [Axis] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Fair and carrying value of debt instruments [Domain] Fair Value, Disclosure Item Amounts [Domain] Fair Value [Member] Estimate of Fair Value, Fair Value Disclosure [Member] Carrying Value [Member] Carrying (Reported) Amount, Fair Value Disclosure [Member] Fair value disclosure [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Convertible notes Convertible Debt, Fair Value Disclosures Other notes Notes Payable, Fair Value Disclosure Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investment, Equity Method Investee, Name [Axis] Equity Method Investee, Name [Axis] Equity Method Investee, Name [Domain] Equity Method Investee, Name [Domain] Inotera [Member] Inotera [Member] Inotera Memories, Inc., a publicly-traded entity in Taiwan in which the registrant owns a noncontrolling equity interest. Other [Member] Other Equity Method Invetments [Member] Other Equity Method Invetments. Primarily Inotera [Member] Variable Interest Entity, Not Primary Beneficiary [Member] Entity Which We Partner With in Investment [Axis] Entity Which We Partner With in Investment [Axis] Entity Which We Partner With in Investment [Axis] Entity Which We Partner With in Investment [Domain] Entity Which We Partner With in Investment [Domain] [Domain] for Entity Which We Partner With in Investment [Axis] Origin Energy Limited [Member] Origin Energy Limited [Member] Origin Energy Limited [Member] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Inventories [Member] Inventories [Member] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] DRAM [Member] DRAM [Member] Net DRAM product sales to external customers. 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 Maximum exposure to loss related variable interest entities Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Percentage interest held by a third party (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. Inotera Amortization Equity Method Investments Amortization Of Difference Between Cost And Underlying Equity In Net Assets This item represents the amortization of the difference between cost and underlying equity in net assets of the investee at the date of investment. Equity Method Investment, Summarized Financial Information [Abstract] Inotera net loss Equity Method Investment, Summarized Financial Information, Net Income (Loss) Inotera current liabilities that exceed current assets Equity Method Investment, Summarized Financial Information, Current Liabilities That Exceed Current Assets Equity Method Investment, Summarized Financial Information, Current Liabilities That Exceed Current Assets Market value of equity interest in Inotera Equity Method Investment, Quoted Market Value Equity method investment net carrying value Equity Method Investment Net Carrying Value Net carrying value of equity method investment calculated as the net of the entities investment balance and cumulative translation adjustments in accumulated other comprehensive income (loss). Amount in accumulated other comprehensive income (loss) for cumulative translation adjustments on its investment Percentage of Inotera's wafer production obligated to purchase (in hundredths) Unrecorded Unconditional Purchase Obligation Percentage Obligation under Inotera Supply Agreement to purchase a set percentage of Inotera's wafer production under a long-term pricing arrangement. Purchases of DRAM products from Inotera Unrecorded Unconditional Purchase Obligation, Purchases Loss on our purchase commitment under Inotera supply agreement Loss On Firm Purchase Commitment For Goods For Inventory Loss recognized in the period on firm, noncancelable, and unhedged purchase commitments for goods for inventory, measured in the same way as are inventory losses. Reduction in research and development costs under cost sharing arrangement Dram Research And Development Expense Reimbursement The reduction in research and development costs under cost sharing arrangement with Nanya to equally share DRAM development costs. Royalty revenue from Nanya for sales of DRAM products on process nodes of 50nm or higher Royalty Revenue Schedule Of Inventory Schedule of Inventory, Current [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Fiscal Period Fiscal Period, Policy [Policy Text Block] Earnings Per Share - Antidilutive Securities Excluded From Computation Of Earnings Per Share [Abstract] Earnings Per Share - Antidilutive Securities Excluded From Computation Of Earnings Per Share [Abstract] 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 [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] 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 Receivables Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Cost of Goods Sold [Member] Cost of Sales [Member] Selling, General and Administrative Expenses [Member] Selling, General and Administrative Expenses [Member] Research and Development [Member] Research and Development Expense [Member] Stock Options [Member] Stock Option [Member] Restricted Stock Awards [Member] Restricted Stock [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Stock-based compensation Share-based Compensation Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Total unrecognized compensation costs, net of estimated forfeitures, related to non-vested awards expected to be recognized Employee Service Share-based Compensation, Nonvested Awards, Total 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, Total Compensation Cost Not yet Recognized, Period for Recognition Equity Method Investments Schedule of Equity Method Investments [Table Text Block] Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Accounts Payable And Accrued Liabilities Schedule Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information, by Segment [Axis] Business Segments [Axis] Reporting Segment [Domain] Segment [Domain] NSG [Member] N S G [Member] The NAND Solutions Group (NSG) includes high-volume NAND Flash products sold into data storage, personal music players, and portions of computing, as well as NAND Flash products sold to Intel through our IM Flash joint venture. DSG [Member] D S G [Member] The DRAM Solutions Group (DSG) includes high-volume DRAM products sold to the PC, consumer electronics, networking and server markets. ESG [Member] E S G [Member] The Embedded Solutions Group (ESG) includes DRAM, NAND Flash and NOR Flash products sold into automotive and industrial applications, as well as NOR and NAND flash sold to consumer electronics, networking, PC and server markets. WSG [Member] W S G [Member] The Wireless Solutions Group (WSG) includes DRAM, NAND Flash and NOR Flash products, including multi-chip packages, sold to the mobile device market. All Other [Member] All Other Segments [Member] Unallocated [Member] Unallocated Amount to Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Operating loss Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] 2014 convertible senior notes [Member] Convertible Senior Notes Due 2014 [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 June 2014. Capital lease obligations [Member] Capital Lease Obligations [Member] 2032C convertible senior notes [Member] 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 [Member] 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. 2031A convertible senior notes [Member] Convertible senior notes due 2031A [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 2031A. 2031B convertible senior notes [Member] 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. Term Note Payable [Member] Secured Debt [Member] 2027 convertible senior notes [Member] Convertible Senior Notes Due 2027 [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 June 2027. Intel senior note [Member] Senior Notes [Member] Sales-leaseback transactions [Member] 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 [Member] Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Libor [Member] Libor [Member] London Interbank Offering Rate. Sibor [Member] Sibor [Member] Singapore Interbank Offering Rate. Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt, Gross Long-term Debt Less current portion Due date Debt Instrument, Maturity Date Stated interest rate (in hundredths) Debt Instrument, Interest Rate, Stated Percentage Effective interest rate (in hundredths) Debt Instrument, Interest Rate, Effective Percentage Unamortized Discounts Debt Instrument, Unamortized Discount Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Debt instrument, orginal term Debt Instrument Orginal Term Debt instrument, Orginal Term in years. Debt instruments number of periodic payments Debt Instruments Number Of Periodic Payments debt instruments number of periodic payments Debt Instrument Period After Draw Prior To Initial Payment Debt Instrument Period After Draw Prior To Initial Payment Period after draw prior to which initial installment payment is required. Draw on facility agreement Line of Credit Facility, Increase, Additional Borrowings Basis Spread on Variable Rate (in hundredths) Debt Instrument, Basis Spread on Variable Rate Debt Instrument Variable Reference Rate Period Debt Instrument Variable Reference Rate Period The reference rate period of focus for variable rate loans based on InterBank Offering Rates. Percentage of collateral to face value of issued and ouststanding credit facility Percentage Of Collateral To Face Value Of Issued And Ouststanding Credit Facility percentage of collateral to face value of issued and ouststanding credit facility Leases, Capital [Abstract] Leases, Capital [Abstract] Proceeds from equipment sale-leaseback transactions Sale Leaseback Transaction, Gross Proceeds Long-term Debt, Gross, current period additions Capital Lease Obligations Incurred Imputed interest rate of sale leaseback additions (in hundredths) Sale Leaseback Transaction, Imputed Interest Rate Micron Shareholders' Equity and Noncontrolling Interests in Subsidiaries Stockholders' Equity Note Disclosure [Text Block] Variable Interest Entities By Name Of Variable Interest Entity [Axis] Represents a VIE in the form of a joint venture created to conduct business. Name Of Variable Interest Entity [Domain] The name of the VIE. 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. Total IMFT and MP Mask assets and liabilities Schedule of Variable Interest Entities [Table Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entities [Table] Entities [Table] Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Investments [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities, Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Money market funds [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Gross Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Fair Value Available-for-sale Securities, Fair Value Disclosure Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Money market funds not due at a single maturity date Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Due in 1 year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due in 1-2 years Available For Sale Securities Debt Maturities After One Through Two Years Amortized Cost This item represents debt securities, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are expected to mature after one year and through two years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Due in 2-4 years Available For Sale Securities Debt Maturities After Two Through Four Years Amortized Cost This item represents debt securities, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are expected to mature after two years and through four years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Due after 4 years Available For Sale Securities Debt Maturities After Four Years Amortized Cost This item represents debt securities, at cost, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments, as defined), and fair value hedge accounting adjustments, if any, which are expected to mature after four years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Debt Maturities, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Fair Value [Abstract] Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Money market funds not due at a single maturity date Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Due in 1 year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due in 1-2 years Available For Sale Securities Debt Maturities After One Through Two Years Fair Value This item represents the fair value of debt securities which are expected to mature after one year and through two years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Due in 2-4 years Available For Sale Securities Debt Maturities After Two Through Four Years Fair Value This item represents the fair value of debt securities which are expected to mature after two years and through four years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities. Due after 4 years Available For Sale Securities Debt Maturities After Four Years Fair Value This item represents the fair value of debt securities which are expected to mature after four years from the balance sheet date which are categorized neither as held-to-maturity nor trading securities. Debt Securities, Fair Value Available-for-sale Securities, Debt Securities Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Proceeds from the sale of available-for-sale securities Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation expense and amortization of intangible assets Depreciation, Depletion and Amortization Amortization of debt discount and other costs Amortization of Financing Costs and Discounts Equity in net loss of equity method investees 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 Other Accounts Payable and Accrued Liabilities Customer prepayments Increase (Decrease) in Customer Advances Deferred income Increase (Decrease) in Deferred Revenue Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [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 Proceeds from sales and maturities of available-for-sale securities Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from sales of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Other Payments for (Proceeds from) Other Investing Activities Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of debt Proceeds from Issuance of Long-term Debt Cash received for capped call transactions Cash received from noncontrolling interests Proceeds from 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. Repayments of debt Repayments of Long-term Debt Distributions to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Other Proceeds from (Payments for) Other Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net 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 Noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Equipment acquisitions on contracts payable and capital leases Capital Expenditures Incurred but Not yet Paid Equity Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Variable Interest Entities [Table] Variable Interest Entities by Classification of Entity [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Singapore LLP [Member] IM Flash Singapore LLP [Member] IM Flash Singapore LLP 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. IM Flash [Member] IM Flash [Member] We have participated in two joint ventures with Intel: IM Flash Technologies, LLC ("IMFT") and IM Flash Singapore ('IMFS), herein referred to as IM Flash, which are 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. In April 2012 the Company acquired Intel's remaining interest in IMFS. Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Domain] Nonsoftware License Arrangement with Photronics [Member] Nonsoftware License Arrangement [Member] Major Customers [Axis] Major Customers [Axis] Name of Major Customer [Domain] Name of Major Customer [Domain] NAND Flash [Member] NAND Flash [Member] Net NAND Flash product sales to external customers. Variable Interest Entity [Line Items] Variable interest entity, ownership percentage (in hundredths) Noncontrolling Interest, Ownership Percentage by Parent R and D expenses reduced by reimbursements from Intel R and D Expenses Reduced by Reimbursements From Third Party Reasearch and development expenses reduced by reimburesments for product design and other NAND Flash research and development costs equally shared with third party. Micron share of IMFS cost and supply Entity Share Of Subsidiary Cost And Supply Micron share of IMFS cost and supply Trade Receivables Distributions to, and contributions from, shareholders [Abstract] Variable Interest Entity Distributions To And Contributions From Shareholders [Abstract] Distributions to Micron from Consolidated VIE's Variable Interest Entity Distributions To Parent Distributions from variable interest entity to parent reporting entity. Distributions to noncontrolling interests from consolidated VIE's Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Micron contributions to consolidated VIE's Payments to Acquire Interest in Subsidiaries and Affiliates Variable interest entity, ownership percentage by noncontrolling owners (in hundredths) Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Proceeds for entering into license agreement with Photronics Proceeds from License Fees Received Term of license agreement with Photronics (in years) Variable Interest Entity Term Of Licensing Agreement The term of the licensing agreement with Photronics to produce photomasks for leading-edge and advanced next generation semiconductors. Deferred income and other noncurrent liabilities related to license agreement with Photronics Deferred Revenue Income Tax Holiday [Table] Income Tax Holiday [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Holiday [Line Items] Income Tax Holiday [Line Items] 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 Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Investments Classified by Contractual Maturity Date [Table Text Block] Assumptions used in Black-Scholes option valuation model Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of restricted stock awards activity Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Stock-based compensation expense Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Schedule Of Finite Lived Intangible Assets By Major Class Schedule of Finite-Lived Intangible Assets [Table Text Block] Segment Information Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Revenues from transactions with related party Revenue from Related Parties Cost of goods sold from transactions with related party Related Party Transaction, Expenses from Transactions with Related Party Loss Contingency [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Patent Matters [Member] Patent Matters [Member] Loss contingencies related to assertions regarding infringement of other's intellectual property rights. Antitrust Matters [Member] Antitrust Matters [Member] Loss contingencies related to threatened or initiated litigation regarding alleged violations of federal and/or state antitrust laws. Commercial Matters [Member] Commercial Matters [Member] Loss contingencies related to assertions regarding commercial matters. Litigation Case [Axis] Litigation Case [Axis] Litigation Case Type [Domain] Litigation Case Type [Domain] Rambus Patent Litigation Delaware [Member] Rambus Patent Litigation Delaware [Member] Various litigation with Rambus in the U.S. District Court of Delaware relating to certain of Rambus' patents and certain of our claims and defenses. Rambus Patent Litigation Northern California [Member] Rambus Patent Litigation Northern California [Member] Various litigation with Rambus in the U.S. District Court of Northern California relating to certain of Rambus' patents and certain of our claims and defenses. HSM Portfolio LLC and Technology Properties LLC [Member] HSM Portfolio LLC and Technology Properties LLC filed a patent infringement action in the U.S. District Court for the District of Delaware against us and seventeen other defendants. The complaint alleges that certain Company DRAM and image sensor products infringe two U.S. patents. Advanced Data Access LLC [Member] Advanced Data Access LLC filed a patent infringement action in the U.S. District Court for the Eastern District of Texas against the Company and seven other defendants. The complaint alleges that certain Company DRAM products infringe two U.S. patent. Smart Memory Solutions LLC [Member] Smart Memory Solutions LLC filed a patent infringement action in the U.S. District Court for the District of Delaware against the Company and Winbond Electronics Corporation of America. The complaint alleges that certain NOR Flash products infringe a single U.S. patent. Board Of Trustees For The University Of Illinois [Member] The Board of Trustees for the University of Illinois filed a patent infringement action against us in the U.S. District Court for the Central District of Illinois. The complaint alleges that unspecified semiconductor products of ours infringe three U.S. patents. Semiconductor Technologies, LLC [Member] Semiconductor Technologies, LLC [Member] Semiconductor Technologies, LLC filed a patent infringement action in U.S. District Court for the Eastern District of Texas (Marshall) agaist us. The complain alleges that certain of our DRAM products infringe U.S. patetents and seeks injunctive releif, damages, attorney's fees, and costs. Semcon Tech, LLC [Member] Semcon Tech, LLC [Member] Semcon Tech, LLC filed a patent infringement action against the Company in the U.S. District Court for the District of Delaware. The complaint alleges that our use of a Reflexion CMP polishing system purchased from Applied Materials infringes a single U.S. patent and seeks injunctive relief, damages, attorneys' fees, and costs. Rambus DRAM Complaint [Member] Rambus DRAM Complaint [Member] A complaint in the Superior Court of the State of California (San Francisco County) against us and other DRAM suppliers alleging that the defendants harmed Rambus by engaging in concerted and unlawful efforts affecting Rambus DRAM ("RDRAM") by eliminating competition and stifling innovation in the market for computer memory technology and computer memory chips. DRAM Purported Class Action Price-fixing Lawsuit [Member] DRAM Purported Class Action Price Fixing Lawsuit [Member] Purported class action price-fixing lawsuits have been filed against the Company and other DRAM suppliers in various federal and state courts in the United States and in Puerto Rico on behalf of indirect purchasers alleging price-fixing in violation of federal and state antitrust laws, violations of state unfair competition law, and/or unjust enrichment relating to the sale and pricing of DRAM products Canadian DRAM Putative Class Action Price-fixing Lawsuit [Member] Canadian DRAM Putative Class Action Price Fixing Lawsuit [Member] Putative class action lawsuits alleging price-fixing of DRAM products filed in Quebec, Ontario, and British Columbia, Canada, on behalf of direct and indirect purchasers, asserting violations of the Canadian Competition Act. Qimonda AG Inotera Share Purchase Proceedings [Member] Qimonda AG Inotera Share Purchase Proceedings [Member] Qimonda AG Inotera Share Purchase Proceedings [Member] Legal Opinion [Member] Legal Opinion [Member] Opinion entered into by judge presiding over case. Loss Contingencies [Line Items] Loss Contingencies [Line Items] Alleged number of patents infringed Loss Contingency Alleged Number Of Patents Infringed The alleged number of patents involved in various lawsuits. Number of petitions submitted for inter-partes review Loss Contingency Number Of Petitions Submitted For Inter-Partes Review The number of petitions submitted to the Patent and Trademark Office for inter-partes review, challenging the validity of the patents in suit. Court ruling patents unenforceable against us due to spoliation (number of patents) Court ruling patents unenforceable against us due to spoliation Court ruling patents unenforceable against us due to spoliation. Number of other defendants Loss Contingency, Number of Defendants Approximation of damages claimed Loss Contingency, Damages Sought, Value Number of lawsuits filed Loss Contingency, Pending Claims, Number Approximate number of U.S. states and territories filing suit Number Of Us States And Territories Filing Suit The number of U. S. states and territories whose Attorneys General filed suit. Settlement agreement execution date Loss Contingency, Settlement Agreement, Date Settlement agreement amount Loss Contingency, Settlement Agreement, Consideration Settlement agreement number of installment payments Loss Contingency Settlement Agreement Number Of Installment Payments The number of installment payments to be made upon final court approval of the class settlements. Settlement agreement number of years for installment payments (in years) Loss Contingency Settlement Agreement Number Of Years For Installment Payments The number of year over which installment payments will be made upon final court approval of the class settlements. Amount paid into an escrow account in connection with settlement Payments for Legal Settlements Loss Contingency, Claims Settled and Dismissed, Number Loss Contingency, Claims Settled and Dismissed, Number Equity method investment net carrying value of 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 Equity Method Investments Equity Method Investments and Joint Ventures Disclosure [Text Block] Schedule of Stockholders Equity [Table Text Block] Schedule of Stockholders Equity [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Property, Plant and Equipment [Abstract] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment by Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] Buildings [Member] Building and Building Improvements [Member] Equipment [Member] Equipment [Member] Construction in progress [Member] Construction in Progress [Member] Software [Member] Software and Software Development Costs [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment, Net, by Type [Abstract] Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, Plant and Equipment, Net Depreciation [Abstract] Depreciation [Abstract] Depreciation expense Depreciation Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract] Property, Plant and Equipment Assets Held-for-sale Disclosure [Abstract] Property, plant and equipment classified as held for sale Assets Held-for-sale, Long Lived Changes in Components of Equity [Abstract] Changes in Components of Equity [Abstract] Statement [Table] Attributable to Micron [Member] Parent [Member] Noncontrolling Interest [Member] Noncontrolling Interest [Member] Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Contribution from noncontrolling interests Noncontrolling Interest, Increase from Equity Issuance or Sale of Parent Equity Interest Distributions to noncontrolling interests Capital and other transactions attributable to Micron Stockholders' Equity, Other Ending balance Inventory Disclosure [Abstract] 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 Statement of Financial Position [Abstract] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Liabilities and equity Liabilities and Equity [Abstract] 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) Common Stock, Shares, Outstanding Total current assets Equity method investments Intangible assets, net Finite-Lived Intangible Assets, Net Total assets Total current liabilities Total 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, 1,021.0 shares issued and outstanding (1,017.7 as of August 30, 2012) Common Stock, Value, Issued Additional capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income Total Micron shareholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests in subsidiaries Stockholders' Equity Attributable to Noncontrolling Interest Total equity Total liabilities and equity Liabilities and Equity Schedule of Finite-Lived Intangible Assets by Major Class [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Product and process technology [Member] Product And Process Technology [Member] Includes the value associated with the entities developed product and process technology, consisting of 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. Customer relationships [Member] Customer Relationships [Member] Other [Member] Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Intangible Assets [Abstract] Finite-Lived Intangible Assets, Net [Abstract] 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 Finite-Lived Intangible Assets, Future Amortization Expense [Abstract] Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Annual amortization for 2013 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Annual amortization for 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Two Annual amortization for 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Three Annual amortization for 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Four Annual amortization for 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Five Contingencies Contingencies Disclosure [Text Block] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss) Total comprehensive loss Comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive loss attributable to Micron Comprehensive Income (Loss), Net of Tax, Attributable to Parent Payables and Accruals [Abstract] Accounts Payable and Accrued Expenses [Table] Accounts Payable and Accrued Expenses [Table] Accounts Payable and Accrued Expenses [Axis] Accounts Payable and Accrued Expenses [Axis] Accounts Payable and Accrued Expenses [Domain] Accounts Payable and Accrued Expenses [Domain] Cost Of Hedge [Member] Cost Of Hedge [Member] The Cost of Entering Into a hedge transaction. Other Liabilities Noncurrent [Axis] Other Liabilities Noncurrent [Axis] Other Liabilities Noncurrent [Domain] Other Liabilities Noncurrent [Domain] Customer advances [Member] Customer Receipts [Member] Elpida Memory, Inc. and Rexchip Electronics Corporation [Member] Elpida Memory, Inc. and Rexchip Electronics Corporation [Member] Elpida Memory, Inc. and Rexchip Electronics Corporation [Member] Accounts payable Accounts Payable, Trade, Current 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 Accounts payable and accrued expenses Other Liabilities, Noncurrent [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Schedule of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Intangible Assets Intangible Assets Disclosure [Text Block]