Investments [Abstract]
Cash and Investments
Cash, Cash Equivalents and Investments [Table Text Block]
Cash and equivalents and the fair values of available-for-sale investments
Debt Securities, Available-for-sale [Table Text Block]
Fair Value Disclosures [Abstract]
Estimated fair value and carrying value of debt instruments
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]
Earnings Per Share [Abstract]
Earnings Per Share
Earnings Per Share [Text Block]
Quarterly Financial Information Disclosure [Abstract]
Revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Gross margin
Gross Profit
Operating income
Operating Income (Loss)
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income attributable to Micron
Net Income (Loss) Attributable to Parent
Earnings per share
Basic (in dollars per share)
Earnings Per Share, Basic
Diluted (in dollars per share)
Earnings Per Share, Diluted
Receivables [Abstract]
Trade receivables
Accounts Receivable, after Allowance for Credit Loss, Current
Income and other taxes
Income Taxes Receivable, Current
Other
Other Receivables, Net, Current
Receivables
Receivables, Net, Current
Receivables
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Payables and Accruals [Abstract]
Schedule of Accounts Payable And Accrued Expenses
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Equity [Abstract]
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]
Schedule of IMFT Assets and Liabilities
Schedule of Variable Interest Entities [Table Text Block]
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Equity Components
Equity Components [Axis]
Equity Component
Equity Component [Domain]
Common Stock
Common Stock [Member]
Additional Capital
Additional Paid-in Capital [Member]
Retained Earnings
Retained Earnings [Member]
Treasury Stock
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Total Micron Shareholders' Equity
Parent [Member]
Noncontrolling Interests in Subsidiaries
Noncontrolling Interest [Member]
Statement [Line Items]
Statement [Line Items]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance (in shares)
Common Stock, Shares, Issued
Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Cumulative effect of adopting new accounting standards
Cumulative Effect of New Accounting Principle in Period of Adoption
Net income
Net income (loss), excluding redeemable noncontrolling interest
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest
Other comprehensive income (loss), net
Other Comprehensive Income (Loss), Net of Tax
Stock issued in public offering (in shares)
Stock Issued During Period, Shares, New Issues
Stock issued in public offering
Stock Issued During Period, Value, New Issues
Stock issued under stock plans (in shares)
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture
Stock issued under stock plans
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture
Stock-based compensation expense
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
Contributions from noncontrolling interests
Noncontrolling Interest, Increase from Subsidiary Equity Issuance
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
Repurchase of stock, accelerated share repurchase program adj
Accelerated Share Repurchase Program, Adjustment
Repurchase of treasury stock
Treasury Stock, Value, Acquired, Cost Method
Repurchase of treasury stock (held and retired)
Stock Repurchased and Retired and Treasury Shares Acquired
Equity impact of 1) the value of stock that has been repurchased and retired during the period (excess of the purchase price over par value can be charged against retained earnings once the excess is fully allocated to additional paid in capital) and 2) the cost of common and preferred stock that were repurchased during the period through single or various means.
Acquisitions of noncontrolling interests
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests
Stock issued to Nanya for Inotera Acquisition (in shares)
Stock Issued During Period, Shares, Acquisitions
Stock issued to Nanya for Inotera Acquisition
Stock Issued During Period, Value, Acquisitions
Treasury stock issued to Nanya for Inotera Acquisition
Treasury Stock Reissued at Lower than Repurchase Price
Settlement of capped calls
Option Indexed To Issuer's Equity, Settlement, Effect on Shareholders' Equity
The effect of settlements of options indexed to issuer's equity of shareholders' equity.
Reclassification of redeemable convertible notes, net
Increase (Decrease) in Equity for Reclassifications of Convertible Debt (to) from Mezzanine
Reclassification adjustment for redeemable convertible notes, which is convertible debt that requires the principal to be settled in cash. The reclassifications include accretion of the carrying value of convertible debt and the debt becoming or ceasing to be convertible.
Conversion and repurchase of convertible notes
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Subsequent Adjustments
Decrease in treasury stock due to reissuance of treasury shares
Stock Issued During Period, Value, Treasury Stock Reissued
Balance (in shares)
Balance
Extinguishment of Debt Disclosures [Abstract]
Schedule of Extinguishment of Debt [Table]
Schedule of Extinguishment of Debt [Table]
Long-term Debt, Type
Long-term Debt, Type [Axis]
Long-term Debt, Type
Long-term Debt, Type [Domain]
Corporate Bonds
Corporate Debt Securities [Member]
Subsequent Event Type
Subsequent Event Type [Axis]
Subsequent Event Type
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Extinguishment of Debt
Extinguishment of Debt [Axis]
Extinguishment of Debt
Extinguishment of Debt, Type [Domain]
Secured Debt
Secured Debt [Member]
Convertible Debt
Convertible Debt [Member]
Notes Payable, Other Payables
Notes Payable, Other Payables [Member]
Debt Instrument
Debt Instrument [Axis]
Debt Instrument, Name
Debt Instrument, Name [Domain]
2024 Notes
Unsecured Senior Corporate Debt due 2024_2 [Member]
Unsecured senior corporate debt due 2024 issued February 2019.
2026 Notes
Unsecured Senior Corporate Debt Due 2026_2 [Member]
Unsecured senior corporate debt due 2026 issued February 2019.
2027 Notes
Unsecured Senior Corporate Debt Due 2027 [Member]
Unsecured senior corporate debt due 2027.
2029 Notes
Unsecured Senior Corporate Debt Due 2029 [Member]
Unsecured senior corporate debt due 2029 issued February 2019.
2030 Notes
Unsecured Senior Corporate Debt Due 2030 [Member]
Unsecured senior corporate debt due 2030.
2022 Term Loan B
Term Loan B Credit Facility 1 [Member]
The company's first Term Loan B Credit Facility.
2032D Notes
Convertible senior notes due 2032D [Member]
A borrowing which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Series due May 2032D.
2033F Notes
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 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.
Debt Conversion Description
Debt Conversion Description [Axis]
Debt Conversion, Name
Debt Conversion, Name [Domain]
Conversions not settled
Transactions Not Yet Settled [Member]
Represents a transaction that has been initiated but not completely settled.
Extinguishment of Debt [Line Items]
Extinguishment of Debt [Line Items]
Derivative, Term of Contract (in consecutive trading days)
Derivative, Term of Contract
Increase (Decrease) Principal
Debt Instrument Net Increase (Decrease) Principal
The net increase (decrease) in principal amount of debt for the period.
Decrease in Principal
Extinguishment of Debt, Amount
Increase (Decrease) in Carrying Value
Debt Instrument, Increase (Decrease), Net
Increase in Cash - Issuances
Proceeds from Debt, Net of Issuance Costs
(Decrease) in Cash - Prepayments and Conversions
Repayments of Debt
Increase (Decrease) in Cash
Increase (Decrease) in Cash From Certain Debt Activities, Net
The net increase (decrease) in cash from debt issuances and unscheduled debt repayments during the period.
Decrease in Equity
Gain (Loss) on debt prepayments, repurchases, and conversions
Gains Losses On Extinguishment Of Debt And Derivative Gain Loss On Derivative Net
Total loss on extinguishment of debt for both the difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity and the amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
Principal amount of settlement obligations to be settled in cash in a future period
Convertible Debt, Conversion, Principal Amount Elected to be Settled in Cash
The principal amount of debt elected by the issuer to be settled in cash
Treasury shares issued for conversion
Stock Issued During Period, Shares, Conversion of Convertible Securities
Current debt
Debt, Current
Loss on debt prepayments, repurchases, and conversions
Gain (Loss) on Extinguishment of Debt
Accounts Payable and Accrued Expenses
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Revenue from Contract with Customer [Abstract]
Statement [Table]
Products and Services
Product and Service [Axis]
Products and Services
Product and Service [Domain]
Contract liabilities from customer advances (product)
Product [Member]
Other contract liabilities
Services and Other Arrangements [Member]
Services and other arrangements.
Contract Liabilities
Change in Contract with Customer, Liability [Abstract]
Contract liabilities
Contract with Customer, Liability
Revenue recognized from beginning balance
Contract with Customer, Liability, Revenue Recognized
Consideration Payable to Customers
Contract with Customer, Refund Liability [Abstract]
Estimated consideration payable to customers for pricing adjustments and returns
Contract with Customer, Refund Liability, Current
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Amount [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
U.S. tax on foreign operations
Effective Income Tax Rate Reconciliation, Foreign Income Taxable in the US, Amount
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 certain foreign income taxable in the US, including but not limited to, Subpart F income and global intangible low-taxed income (GILTI).
Repatriation Tax related to the Tax Act
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Amount
Remeasurement of deferred tax assets and liabilities related to the Tax Act
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Change in valuation allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
State taxes, net of federal benefit
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
Research and development tax credits
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Income tax (provision) benefit
Income Tax Expense (Benefit)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory rate (percent)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Foreign tax rate differential (percent)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
U.S. tax on foreign operations (percent)
Effective Income Tax Rate Reconciliation, Foreign Income Taxable in the US, Percent
Percentage 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 applicable to certain foreign income taxable in the US, including but not limited to, Subpart F income and global intangible low-taxed income (GILTI).
Repatriation Tax related to the Tax Act (percent)
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Percent
Remeasurement of deferred tax assets and liabilities related to the Tax Act (percent)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Change in valuation allowance (percent)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
State taxes, net of federal benefit (percent)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Research and development tax credits (percent)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent
Other (percent)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Effective tax rate (percent)
Effective Income Tax Rate Reconciliation, Percent
Measurement period benefit, net of uncertain tax positions
Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)
Provisional benefit for release of valuation allowance on net deferred tax assets of US operations
Deferred Other Tax Expense (Benefit)
Provisional Repatriation Tax expense, net of adjustments related to uncertain tax positions
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense
Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Schedule of Product Sales
Revenue from External Customers by Products and Services [Table Text Block]
Contract Liabilities
Contract with Customer, Asset and Liability [Table Text Block]
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant, and Equipment
Property, Plant and Equipment [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
Share-based Payment Arrangement [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
Statement of Comprehensive Income [Abstract]
Other comprehensive income (loss), net of tax
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension liability adjustments
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Gains (losses) on derivative instruments
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Foreign currency translation adjustments
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Gains (losses) on investments
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax
Other comprehensive income (loss)
Total comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income attributable to noncontrolling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive income attributable to Micron
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Loss Contingency [Abstract]
Contingencies
Contingencies Disclosure [Text Block]
Commitments and Contingencies Disclosure [Abstract]
Commitments
Commitments Disclosure [Text Block]
Other Nonoperating Income (Expense) [Abstract]
Loss on debt prepayments, repurchases, and conversions
Loss from changes in currency exchange rates
Foreign Currency Transaction Gain (Loss), before Tax
Gain on remeasurement of previously-held equity interest in Inotera
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain
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)
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 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]
Debt Instrument, Fair Value Disclosure [Abstract]
Debt Instrument, Fair Value Disclosure [Abstract]
Fair Value of Notes and MMJ Creditor Payments (level 2)
Notes Payable, Fair Value Disclosure
Fair Value of Convertible notes (level 2)
Convertible Debt, Fair Value Disclosures
Carrying Value of Debt
Debt and Lease Obligation
Unrealized losses on assets held for sale (level 3)
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)
Revenue, Initial Application Period Cumulative Effect Transition [Abstract]
Revenue, Initial Application Period Cumulative Effect Transition [Table]
Revenue, Initial Application Period Cumulative Effect Transition [Table]
Initial Application Period Cumulative Effect Transition
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition
Initial Application Period Cumulative Effect Transition [Domain]
Difference between Revenue Guidance in Effect before and after Topic 606
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Calculated under Revenue Guidance in Effect before Topic 606
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Adjustments for New Accounting Pronouncements
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption
Type of Adoption [Domain]
ASC 606
Accounting Standards Update 2014-09 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Income Statement [Abstract]
Income Statement [Abstract]
Cost of goods sold
Cost of Goods and Services Sold
Interest expense
Interest Expense
Income tax (provision) benefit
Balance Sheet [Abstract]
Balance Sheet Related Disclosures [Abstract]
Receivables
Other current assets
Other Assets, Current
Deferred tax assets
Deferred Income Tax Assets, Net
Accounts payable and accrued expenses
Accounts Payable and Accrued Liabilities, Current
Other current liabilities
Other Liabilities, Current
Other noncurrent liabilities
Other Liabilities, Noncurrent
Retained earnings
Retained Earnings (Accumulated Deficit)
Unrecorded Unconditional Purchase Obligation [Table]
Unrecorded Unconditional Purchase Obligation [Table]
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]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation [Line Items]
Commitments for purchase obligations
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]
2020
Operating Leases, Future Minimum Payments Due, Next Twelve Months
2021
Operating Leases, Future Minimum Payments, Due in Two Years
2022
Operating Leases, Future Minimum Payments, Due in Three Years
2023
Operating Leases, Future Minimum Payments, Due in Four Years
2024
Operating Leases, Future Minimum Payments, Due in Five Years
2025 and thereafter
Operating Leases, Future Minimum Payments, Due Thereafter
Total operating lease commitments
Operating Leases, Future Minimum Payments Due
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 May 2018 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 purchases, block trades, privately-negotiated transactions, derivative transactions, and/or pursuant to a rRule 10b5-1 trading plan subject to the best use of available cash beginning in 2019.
Equity, Class of Treasury Stock [Line Items]
Equity, Class of Treasury Stock [Line Items]
Common Stock Repurchase, Authorized Amount
Stock Repurchase Program, Authorized Amount
Treasury Shares Repurchased (in shares)
Treasury Stock, Shares, Acquired
Payments for Repurchase of Common Stock
Payments for Repurchase of Common Stock
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
DRAM
DRAM Products [Member]
DRAM semiconductor products
NAND
NAND Products [Member]
NAND semiconductor products
Other
Other Product Sales [Member]
Net other product sales to external customers.
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Debt Disclosure [Abstract]
Debt
Debt and Capital Leases Disclosures [Text Block]
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type
Award Type [Axis]
Equity Award
Award Type [Domain]
Restricted stock awards
Restricted stock award [Member]
Equity awards that include both restricted stock (stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met) and restricted stock units (Share instrument which is convertible to stock after a specified period of time or when specified performance conditions are met).
Performance and Market-based Restricted Stock Awards
Restricted Stock Awards, Performance and Market Based Restrictions [Member]
Shares or units including a provision that prohibits sale or substantive sale of an equity instrument until specified performance conditions are met or specified market conditions are achieved.
Service-based Restricted Stock Awards
Restricted Stock Awards, Service Restrictions [Member]
Shares or units including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time.
Employee stock option
Share-based Payment Arrangement, Option [Member]
Employee Stock Purchase Plan
Employee Stock [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]
Range
Statistical Measurement [Axis]
Range
Statistical Measurement [Domain]
Minimum
Minimum [Member]
Maximum
Maximum [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
Annual vesting rights, percentage
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage
General number of years from grant date until stock options expire (in years or months)
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
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)
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 - Canceled (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)
Restricted award vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Restricted award achievement potential, percentage
Share-based Compensation Arrangement by Share-based Payment Award, Award Achievement Potential, Percentage
At the end of the performance period, the percentage of share based awards that will be awarded based on achievement levels.
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
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, Additional 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 unvested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares
Weighted average exercise price per share for options unvested (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price
Weighted average remaining contractual term for options unvested (in years)
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Weighted Average Remaining Contractual Term
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Weighted Average Remaining Contractual Term
Aggregate intrinsic value for options unvested
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Intrinsic Value
Share Based Compensation Arrangement By Share Based Payment Award Options Nonvested Intrinsic Value
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 (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 thousandths)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Expected dividend yield
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate
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]
ESPP maximum payroll deduction percentage (in hundredths)
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate
ESPP percentage purchase price of common stock (in hundredths)
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent
ESPP shares purchased (in shares)
Stock Issued During Period, Shares, Employee Stock Purchase Plans
ESPP value of shares purchased
Stock Issued During Period, Value, Employee Stock Purchase Plan
Fair Value Measurements
Fair Value Disclosures [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Noncontrolling Interest [Table]
Noncontrolling Interest [Table]
Ownership
Ownership [Axis]
Ownership
Ownership [Domain]
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.
Other Consolidated Entities
Other Consolidated Entities [Member]
Other Consolidated Entities [Member]
Customer
Customer [Axis]
Customer
Customer [Domain]
Intel
Intel [Member]
Intel Corporation ("Intel").
Legal Entity
Legal Entity [Axis]
Entity
Entity [Domain]
IMFT Member Debt
IMFT Member Debt [Member]
Financing provided to IMFT by Intel, a joint venture partner. Debt matures upon wind down of IMFT or is convertible into a capital contribution to IMFT at Intel's option.
Scenario
Scenario [Axis]
Scenario
Scenario [Domain]
Forecast
Forecast [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest [Abstract]
Stockholders' Equity Attributable to Noncontrolling Interest [Abstract]
Noncontrolling Interest Balance
Stockholders' Equity Attributable to Noncontrolling Interest
Noncontrolling Interest Percentage (in hundredths)
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners
Ownership interest in IMFT (in hundredths)
Noncontrolling Interest, Ownership Percentage by Parent
IMFT sales to Intel at prices approximating cost
Proceeds from issuance of debt
Proceeds from Issuance of Long-term Debt
Repayments of debt
Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security
Joint Venture Agreement, Terms [Abstract]
Joint Venture Agreement, Terms [Abstract]
Joint Venture Agreement, Terms [Abstract]
Joint Venture Agreement, Terms, Partner Contribution Output Sharing Lag
Joint Venture Agreement, Terms, Partner Contribution Output Sharing Lag
Where rights to output capacity is proportionate to partner investment, the period subsequent to any changes in investment (capital contributions or debt financing) after which supply output to the partners will be adjusted.
Forecasted purchase price of IMFT
Payments to Noncontrolling Interests
Joint Venture Agreement, Terms, Intel Percentage of Lookback Supply from IMFT
Joint Venture Agreement, Terms, Period One Partner Output Allotment, Percentage
The allotment of product output a partner can receive during the first period following the closing of the put/call option based on the supply lookback period volumes.
Joint Venture Agreement, Terms, Intel Supply Lookback Period
Joint Venture Agreement, Terms, Supply Lookback Period
The lookback period that determines the amount of supply a partner will receive following the election of a put/call option terminating the joint venture.
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.
Antitrust Matters
Antitrust Matters [Member]
Loss contingencies related to assertions regarding antitrust matters.
Securities Matters
Securities Matters [Member]
Loss contingencies related to assertions regarding securities matters.
Litigation Status
Litigation Status [Axis]
Litigation Status
Litigation Status [Domain]
Pending Litigation
Pending Litigation [Member]
Joined Litigation
Joined Litigation [Member]
Litigation matters joined or combined with other matters to form a single matter. The individual claims are no longer pending.
Dismissed Litigation
Dismissed Litigation [Member]
Dismissal of a litigation claim by the court or jurisdictional in which the complaint was filed.
Withdrawn Litigation
Withdrawn Litigation [Member]
Litigation case withdrawn by the plaintiff.
Litigation Case
Litigation Case [Axis]
Litigation Case Type
Litigation Case [Domain]
MLC Intellectual Property, LLC vs Micron
MLC Intellectual Property, LLC. [Member]
MLC Intellectual Property, LLC. [Member]
Elm 3DS Innovations, LLC vs Micron
Elm 3DS Innovations, LLC [Member]
Elm 3DS Innovations, LLC [Member]
Innovative Memory Solutions, Inc. vs Micron-Complaint 1
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.
Innovative Memory Solutions, Inc. vs Micron-Complaint 2
Innovative Memory Solutions, Inc. Complaint 2 [Member]
Second complaint filed by Innovative Memory Solutions, Inc.
Innovative Memory Solutions, Inc. vs Micron-Complaint 3
Innovative Memory Solutions, Inc. Complaint 3 [Member]
Third complaint filed by Innovative Memory Solutions, Inc.
Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 1
Fujian Jinhua Integrated Circuit Co., Ltd. [Member]
Fujian Jinhua Integrated Circuit Co., Ltd. filed a patent infringement suit against Micron Semiconductor (Xi'an) Co., Ltd.
Fujian Jinhua Integrated Circuit Co., Ltd. vs Micron-Complaint 2
Fujian Jinhua Integrated Circuit Co., Ltd. Complaint 2 [Member]
Fujian Jinhua Integrated Circuit Co., Ltd. Complaint 2 [Member]
United Microelectronics Corporation vs Micron-Complaint 1
United Microelectronics Corporation [Member]
United Microelectronics Corporation filed a patent infringement suit against Micron Semiconductor (Xi'an) Co., Ltd.
United Microelectronics Corporation vs Micron-Complaint 2
United Microelectronics Corporation Complaint 2 [Member]
United Microelectronics Corporation Complaint 2 [Member]
United Microelectronics Corporation vs Micron-Complaint 3
United Microelectronics Corporation Complaint 3 [Member]
United Microelectronics Corporation Complaint 3 [Member]
Fuzhou Court Preliminary Injunction
Fuzhou Court [Member]
Fuzhou Court preliminary injunction related to patent matters filed in that court.
Qimonda AG Inotera Share Purchase Proceedings
Qimonda AG Inotera Share Purchase Proceedings [Member]
Qimonda AG Inotera Share Purchase Proceedings [Member]
Initial indirect DRAM Purchasers United States vs Micron
Initial indirect DRAM Purchasers United States [Member]
Indirect DRAM Purchasers United States [Member]
Subsequent indirect DRAM Purchasers United States vs Micron
Subsequent indirect DRAM Purchasers United States [Member] [Member]
Subsequent indirect DRAM Purchasers United States [Member] [Member]
Initial direct DRAM Purchasers United States vs Micron
Initial direct DRAM Purchasers United States [Member]
Initial direct DRAM Purchasers United States [Member]
Subsequent direct DRAM Purchasers United States vs Micron
Subsequent direct DRAM Purchasers United States [Member] [Member]
Subsequent direct DRAM Purchasers United States [Member] [Member]
DRAM Purchasers Canada vs Micron
DRAM Purchasers Canada [Member]
DRAM Purchasers Canada [Member]
Original Shareholder Action New York vs Micron
Original Shareholder Action New York [Member]
Original Shareholder Action filed in New York court against Micron and certain executive officers.
Subsequent Shareholder Claims New York vs Micron
Subsequent Shareholder Action New York [Member]
Subsequent shareholder actions filed in New York court against Micron and certain executive officers.
Consolidated Shareholder Class Action New York Court vs Micron
Consolidated Shareholder Class Action New York Court [Member]
Consolidated Shareholder Class Action New York [Member]
Shareholder Class Action Delaware Court vs Micron.
Shareholder Class Action Delaware Court [Member]
Shareholder Class Action Delaware Court [Member]
Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co
Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co [Member]
Micron vs United Microelectronics Corp and Fujian Jinhua Integrated Circuit Co [Member]
Employee Class Action vs Micron
Employee Class Action [Member]
Employee class action suit alleging unfair performance ratings and related impact to bonus achievements.
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Number of patents allegedly infringed
Loss Contingency, Patents Allegedly Infringed, Number
Damages sought on alleged patent infringement
Loss Contingency, Damages Sought, Value
Percent of annualized revenue derived from impacted products
Loss Contingency, Percent of Potentially Impacted Revenue
The estimated percent of revenue that could potentially be impacted by a loss contingency.
Percentage of total Inotera shares subject to litigation (in hundredths)
Subsidiary Or Equity Method Investment, Percentage Of Total Shares Subject To Litigation
The percentage of subsidiary or equity method investee shares that are subject to legal proceedings.
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.
Loss Contingency, Pending Claims, Number
Loss Contingency, Pending Claims, Number
Loss Contingency, Claims Dismissed, Number
Loss Contingency, Claims Dismissed, Number
Loss Contingency, Claims Withdrawn, Number
Loss Contingency, Claims Withdrawn, Number
Number of claims withdrawn by plaintiff.
Loss Contingency, Claims Joined, Number
Loss Contingency, Claims Joined, Number
Number of claims joined or combined with other claims to form a single lawsuit.
Other Income and Expenses [Abstract]
Schedule of Restructuring and Related Costs [Table]
Schedule of Restructuring and Related Costs [Table]
Equity Method Investee, Name
Investment, Name [Axis]
Equity Method Investee, Name
Investment, Name [Domain]
Tera Probe
Tera Probe [Member]
Tera Probe, Inc., a publicly-traded entity in Japan in which the registrant owns a noncontrolling equity interest.
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Line Items]
(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
Restructure and asset impairments
Restructuring, Settlement and Impairment Provisions
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
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities [Abstract]
Gain on asset sales and dispositions
Gain (Loss) on Sale of Assets and Asset Impairment Charges
Ownership interest in Tera Probe disposed of during 2017
Equity Method Investment Disposal Percentage
Percentage interest in an equity method investment that was disposed during the period.
Quarterly Financial Information
Quarterly Financial Information [Text Block]
Variable Interest Entities
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Statement of Other Comprehensive Income [Abstract]
Pension Liability Adjustments
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Gains (Losses) on Derivative Instruments
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Cumulative Foreign Currency Translation Adjustment
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Unrealized Gains (Losses) on Investments
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss), Net of Tax
Other comprehensive income
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
Accumulated other comprehensive income
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Standards Not Yet Adopted
Description of New Accounting Pronouncements Not yet Adopted [Text Block]
Variable Interest Entities
Variable Interest Entity Disclosure [Text Block]
New Accounting Pronouncements or Change in Accounting Principle [Table]
New Accounting Pronouncements or Change in Accounting Principle [Table]
Adjustments for New Accounting Pronouncement
Adjustments for New Accounting Pronouncement [Member]
ASU 2016-02 - Leases
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Approximate operating lease liability to be recorded upon adoption
Operating Lease, Liability
Approximate operating lease right-of-use asset to be recorded upon adoption
Operating Lease, Right-of-Use Asset
Operating Loss Carryforwards [Table]
Operating Loss Carryforwards [Table]
Income Tax Authority
Income Tax Authority [Axis]
Income Tax Authority
Income Tax Authority [Domain]
U.S. Federal
Domestic Tax Authority [Member]
State
State and Local Jurisdiction [Member]
Foreign
Foreign Tax Authority [Member]
Income Tax Authority Name
Income Tax Authority, Name [Axis]
Income Tax Authority
Income Tax Authority, Name [Domain]
Japan
National Tax Agency, Japan [Member]
Taiwan
Taiwan Tax Authority [Member]
Taiwan Tax Authority [Member]
Other Foreign
Other Foreign Tax Authorities [Member]
Other foreign tax authorities
Tax Period
Tax Period [Axis]
Tax Period
Tax Period [Domain]
2020 - 2024
Carryforward Expiring Within Five Years [Member]
Carryforward expiring within five years of the balance sheet date.
2025 - 2029
Carryforward Expiring Within Six To Ten Years [Member]
Carryforward expiring within six to ten years of the balance sheet date.
2030 - 2034
Carryforward Expiring Within Eleven To Fifteen Years [Member]
Carryforward expiring within eleven to fifteen years of the balance sheet date.
2035 - 2039
Carryforward Expiring Within Sixteen to Twenty Years [Member]
Carryforward expiring within sixteen to twenty years from the balance sheet date.
Indefinite
Carryforward Indefinite [Member]
Carryforward which is indefinite lived.
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards
Operating Loss Carryforwards
Schedule of Variable Interest Entities [Table]
Schedule of Variable Interest Entities [Table]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Assets
Assets [Abstract]
Cash and equivalents
Cash and Cash Equivalents, at Carrying Value
Inventories
Inventory, Net
Total current assets
Assets, Current
Property, plant, and equipment
Property, Plant and Equipment, Net
Other noncurrent assets
Other Assets, Noncurrent
Total assets
Assets
Liabilities
Liabilities [Abstract]
Total current liabilities
Liabilities, Current
Long-term debt
Long-term Debt and Lease Obligation
Total liabilities
Liabilities
Recently Adopted Accounting Standards
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments, Gain (Loss) [Table]
Derivative Instruments, Gain (Loss) [Table]
Derivative Instrument
Derivative Instrument [Axis]
Derivative Contract
Derivative Contract [Domain]
Currency forward
Foreign Exchange Forward [Member]
Convertible notes settlement obligation
Equity Contract [Member]
Hedging Designation
Hedging Designation [Axis]
Hedging Designation
Hedging Designation [Domain]
Designated hedging instruments
Designated as Hedging Instrument [Member]
Not designated hedging instruments
Not Designated as Hedging Instrument [Member]
Hedging Relationship
Hedging Relationship [Axis]
Hedging Relationship
Hedging Relationship [Domain]
Cash flow hedges
Cash Flow Hedging [Member]
Fair value hedges
Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Line Items]
Net gains (losses) recognized in other comprehensive income, effective portion
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract]
Gain (Loss) on Fair Value Hedges Recognized in Earnings [Abstract]
Loss on remeasurement of hedged assets and liabilities
Change in Unrealized Gain (Loss) on Hedged Item in Foreign Currency Fair Value Hedge
Gain on derivatives designated as hedged instruments
Change in Unrealized Gain (Loss) on Foreign Currency Fair Value Hedging Instruments
Amortization of amounts excluded from hedge effectiveness
Gain (Loss) on Components Excluded from Assessment of Foreign Currency Fair Value Hedge Effectiveness
Loss on fair value hedges recognized in earnings
Gain (Loss) on Fair Value Hedges Recognized in Earnings
Net gains (losses) for derivative instruments without hedge accounting designation
Derivative, Gain (Loss) on Derivative, Net
Research and Development [Abstract]
Research and Development
Collaborative Arrangement Disclosure [Text Block]
Segment Reporting [Abstract]
Geographic Information
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
Business Combination, Step Acquisition [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition
Business Acquisition [Axis]
Business Acquisition, Acquiree
Business Acquisition, Acquiree [Domain]
Inotera
Inotera [Member]
Inotera Memories, Inc., a publicly-traded entity in Taiwan in which the registrant owns a noncontrolling equity interest.
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Acquisition of Inotera
Business Combination Disclosure [Text Block]
Geographic Net Sales based on Location of Customer Headquarters
Revenue from External Customers by Geographic Areas [Table Text Block]
Net Property, Plant, and Equipment by Geographic Area
Long-lived Assets by Geographic Areas [Table Text Block]
Temporary Equity [Abstract]
Redeemable Convertible Notes
Temporary Equity [Table Text Block]
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Table Text Block]
Schedule of Revenues from External Customers and Long-Lived Assets [Table]
Geographical
Geographical [Axis]
Geographical
Geographical [Domain]
United States
UNITED STATES
Mainland China (excluding Hong Kong)
Mainland China [Member]
Mainland China excluding Hong Kong
China
CHINA
Taiwan
TAIWAN, PROVINCE OF CHINA
Hong Kong
HONG KONG
Other Asia Pacific
Other Asia Pacific [Member]
Other Asia Pacific exclude China, Taiwan and Japan
Japan
JAPAN
Singapore
SINGAPORE
Other
Other Countries [Member]
An unspecified group of foreign countries about which segment information is provided by the entity.
Concentration Risk Benchmark
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark
Concentration Risk Benchmark [Domain]
Revenue from Contract with Customer
Revenue from Contract with Customer Benchmark [Member]
Concentration Risk by Type
Concentration Risk Type [Axis]
Concentration Risk Type
Concentration Risk Type [Domain]
Geographic Concentration Risk
Geographic Concentration Risk [Member]
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 Revenue Allocation Basis
Geographic Revenue Allocation Basis
The basis by which geographic revenue is determined including, but not limited to, ship-to location and location of company headquarters.
Geographic Concentration Risk by Ship-to Location, Percentage
Concentration Risk, Percentage
Geographic Risk Allocation Basis
Geographic Risk Allocation Basis
When a geographic risk is disclosed, the allocation basis by which geography is determined including, but not limited to, ship-to location and location of customer headquarters.
Geographic Areas, Long-Lived Assets [Abstract]
Geographic Areas, Long-Lived Assets [Abstract]
Property, plant, and equipment, net
Statement of Cash Flows [Abstract]
Cash flows from operating activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income to net cash provided by operating activities
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation expense and amortization of intangible assets
Depreciation, Depletion and Amortization
Amortization of debt discount and other costs
Amortization of Debt Issuance Costs and Discounts
Loss on debt prepayments, repurchases, and conversions
Stock-based compensation
Share-based Payment Arrangement, Noncash Expense
Gain on remeasurement of previously-held equity interest in Inotera
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
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.
Deferred income taxes, net
Increase (Decrease) in Deferred Income Taxes
Other
Other Operating Activities, Cash Flow Statement
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 Debt Securities, Available-for-sale
Acquisition of Inotera
Payments to Acquire Businesses, Net of Cash Acquired
Proceeds from maturities of available-for-sale securities
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale
Proceeds from sales of available-for-sale securities
Proceeds from Sale of Debt Securities, Available-for-sale
Proceeds from government incentives
Proceeds From Government Incentives
Proceeds from government agencies to incentivize certain types of investments, improvements, behaviors, etc.
Other
Payments for (Proceeds from) Other Investing Activities
Net cash provided by (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]
Repayments of debt
Payments to acquire treasury stock
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.
Proceeds from issuance of stock
Proceeds from Issuance or Sale of Equity
Other
Proceeds from (Payments for) Other Financing Activities
Net cash provided by (used for) financing activities
Net Cash Provided by (Used in) Financing Activities
Effect of changes in currency exchange rates on cash, cash equivalents, and restricted cash
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Net increase in cash, cash equivalents, and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Cash, cash equivalents, and restricted cash at beginning of period
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash, cash equivalents, and restricted cash 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, Excluding Capitalized Interest, Operating Activities
Noncash investing and financing activity
Noncash Investing and Financing Items [Abstract]
Equipment acquisitions on contracts payable and capital leases
Capital Expenditures Incurred but Not yet Paid
Gross margin
Selling, general, and administrative
Selling, General and Administrative Expense
Research and development
Research and Development Expense
Other operating (income) expense, net
Operating income
Interest income
Investment Income, Net
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
Income (Loss) from Equity Method Investments
Net income
Net income attributable to noncontrolling interests
Net Income (Loss) Attributable to Noncontrolling Interest
Net income attributable to Micron
Earnings per share
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
Cover page.
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
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Voluntary Filers
Entity Current Reporting Status
Entity Current Reporting Status
Entity Public Float
Entity Public Float
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Shell Company
Entity Shell Company
Troubled Debt Restructuring, Debtor, Subsequent Periods [Table]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Table]
Reorganization obligation
Reorganization obligation [Member]
The liabilitiy owed to secured and unsecured creditors subject to a reorganization plan as part of bankruptcy proceedings.
Micron Memory Japan, Inc.
Elpida Company [Member]
Details pertaining to acquisition of Elpida Memory, Inc. (“Elpida”) and its subsidiary.
Troubled Debt Restructuring, Debtor, Subsequent Periods
Troubled Debt Restructuring, Debtor, Subsequent Periods [Axis]
Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name
Troubled Debt Restructuring, Debtor, Subsequent Periods, Contingent Payments, Name [Domain]
Secured Creditors
Secured Creditors [Member]
Secured Creditors [Member]
Unsecured Creditors
Unsecured Creditor [Member]
Unsecured Creditor [Member]
Scenario, Plan
Scenario, Plan [Member]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]
Total MMJ Creditor 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.
MMJ Creditor Payments
Business Combination, Description [Abstract]
2020
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.
Less unamortized discount
Debt Instrument, Unamortized Discount
Debt
Reduction in R and D expenses for reimbursements from partners
Expense Reduction From Cost Sharing Arrangement
Reduction to expense as a result of reimbursements received under a cost sharing arrangement.
Financial Statement Impact from Adoption of New Accounting Standards
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
Accounting Policies [Abstract]
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Intercompany Eliminations
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
Reclassifications
Reclassification, Policy [Policy Text Block]
Comparability of Prior Year Financial Data
Comparability of Prior Year Financial Data, Policy [Policy Text Block]
Fiscal Period
Fiscal Period, Policy [Policy Text Block]
Derivative and Hedging Instruments
Derivatives, Policy [Policy Text Block]
Financial Instruments, Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Financial Instruments, Investments
Marketable Securities, Policy [Policy Text Block]
Functional Currency
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Goodwill
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Non-Amortizing Intangible Assets
Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block]
Government Incentives
Government Incentives [Policy Text Block]
Policies and accounting treatment for incentives received from government agencies.
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 [Policy Text Block]
Stock-based Compensation
Share-based Payment Arrangement [Policy Text Block]
Treasury Stock
Stockholders' Equity, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Schedule of Income (loss) Before Tax and Other Items
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Components of Income Tax (Provision) Benefit
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Effective Income Tax Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Net Operating Loss Carryforwards
Summary of Operating Loss Carryforwards [Table Text Block]
Schedule of Tax Credit Carryforwards
Summary of Tax Credit Carryforwards [Table Text Block]
Rollforward of Unrecognized Tax Benefits
Summary of Income Tax Contingencies [Table Text Block]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Notes Payable (including MMJ Creditor Payments)
Loans Payable [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Long-term Debt, by Maturity [Abstract]
Long-term Debt, Fiscal Year Maturity [Abstract]
2020
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months
2021
Long-term Debt, Maturities, Repayments of Principal in Year Two
2022
Long-term Debt, Maturities, Repayments of Principal in Year Three
2023
Long-term Debt, Maturities, Repayments of Principal in Year Four
2024
Long-term Debt, Maturities, Repayments of Principal in Year Five
2025 and thereafter
Long-term Debt, Maturities, Repayments of Principal after Year Five
Debt Instrument, Unamortized Discount
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]
2020
Capital Leases, Future Minimum Payments Due, Next Twelve Months
2021
Capital Leases, Future Minimum Payments Due in Two Years
2022
Capital Leases, Future Minimum Payments Due in Three Years
2023
Capital Leases, Future Minimum Payments Due in Four Years
2024
Capital Leases, Future Minimum Payments Due in Five Years
2025 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
Redeemable Noncontrolling Interest, by Legal Entity [Table]
Redeemable Noncontrolling Interest, by Legal Entity [Table]
Micron Semiconductor Asia Operations Pt. Ltd.
Micron Semiconductor Asia Operations Pt. Ltd. [Member]
Micron Semiconductor Asia Operations Pt. Ltd. [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, shares authorized
Temporary Equity, Shares Authorized
Redeemable noncontrolling interest, shares Issued
Temporary Equity, Shares Issued
Net proceeds from issuance of redeemable preferred stock
Proceeds from Issuance of Redeemable Preferred Stock
Cumulative fixed dividend on redeemable noncontrolling interests
Preferred Stock, Dividend Rate, Percentage
Risks and Uncertainties [Abstract]
Certain Concentrations
Concentration Risk Disclosure [Text Block]
Segment Information
Segment Reporting Disclosure [Text Block]
Inventory Disclosure [Abstract]
Schedule of Inventories
Schedule of Inventory, Current [Table Text Block]
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]
Option Indexed to Issuer's Equity [Line Items]
Option Indexed to Issuer's Equity [Line Items]
2033F capped calls, underlying common shares (in shares)
Option Indexed to Issuer's Equity, Shares
2033F capped calls, initial strike price (in dollars per share)
Option Indexed to Issuer's Equity, Strike Price
2033F capped calls, cap price (in dollars per share)
Call Option Indexed to Issuer's Equity, Cap Price
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.
2033F capped calls, potential value at expiration
Option Indexed to Issuer's Equity, Potential Value at Expiration
Upon expiration of an option indexed to issuer's equity, the amount of value that could be received.
Treasury shares from capped call settlement
Value of shares received upon settlement of capped calls
Proceeds received upon settlement of capped calls
Option Indexed to Issuer's Equity, Settlement, Cash Proceeds
Upon cash-settlement of options indexed to issuer's equity, the amount of proceeds received.
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Maximum life of product and process technology intangible assets (in years)
Finite-Lived Intangible Asset, Useful Life
Equity Plans
Share-based Payment Arrangement [Text Block]
Schedule of Debt
Schedule of Long-term Debt Instruments [Table Text Block]
Schedule of MMJ Creditor Payments
Schedule of Debtor Troubled Debt Restructuring, Subsequent Periods [Table Text Block]
Schedule of Convertible Senior Notes
Convertible Debt [Table Text Block]
Redemption Features of Convertible Debt
Debt Instrument Redemption [Table Text Block]
Debt Issuances, Prepayments, Repurchases, and Conversions
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]
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]
Schedule of Receivables
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Retirement Benefits [Abstract]
Employee Savings Plan for U.S. Employees
Defined Contribution Plan [Abstract]
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
Retirement Plans
Defined Benefit Plan [Abstract]
Projected pension benefit obligation
Defined Benefit Plan, Benefit Obligation
Pension plan assets
Defined Benefit Plan, Plan Assets, Amount
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill
Goodwill and Intangible Assets Disclosure [Text Block]
Derivative Instruments
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Schedule of Minimum Future Operating Lease Commitments
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Schedule of the Estimated Useful Lives 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]
Buildings
Building and Building Improvements [Member]
Equipment
Equipment [Member]
Software
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment useful life (in years)
Property, Plant and Equipment, Useful Life
Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies [Text Block]
Cash and Investments
Cash, Cash Equivalents, and Marketable Securities [Text Block]
Debt Securities, Available-for-sale [Table]
Debt Securities, Available-for-sale [Table]
Financial Instrument
Financial Instrument [Axis]
Financial Instruments
Financial Instruments [Domain]
Cash
Cash [Member]
Money market funds
Money Market Funds [Member]
Certificates of deposits
Certificates of Deposit [Member]
Corporate bonds
Government securities
Sovereign Debt [Member]
Asset-backed securities
Asset-backed Securities [Member]
Commercial paper
Commercial Paper [Member]
Fair Value, Hierarchy
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy
Fair Value Hierarchy and NAV [Domain]
Level 1
Fair Value, Inputs, Level 1 [Member]
Level 2
Fair Value, Inputs, Level 2 [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale [Line Items]
Cash and Equivalents
Short-term Investments
Debt Securities, Available-for-sale, Current
Long-term Marketable Investments
Debt Securities, Available-for-sale, Noncurrent
Total Fair Value
Cash, Cash Equivalents, and Available-for-Sale Debt Securities
Amount of cash and equivalents and investment in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).
Restricted cash
Restricted Cash, Noncurrent
Cash, cash equivalents, and restricted cash
General maturities of long-term marketable securities (in years)
Long Term Marketable Securities General Maturities Term
The general maturity period (in years) for the Company's long term marketable securities.
Value of available-for-sale debt securities in a continuous unrealized loss position 12 months or longer
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer
Other Non-Operating Income (Expense), Net
Other Nonoperating Income and Expense [Text Block]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Variable Interest Entity (PTI Xi'an), Nonconsolidated, Carrying Amount of PP&E
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
Variable Interest Entity (PTI Xi'an), Nonconsolidated, Carrying Amount of Capital Leases
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
Schedule of Market Concentration Risk
Schedules of Concentration of Risk, by Risk Factor [Table 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
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 into client, cloud server, enterprise, graphics, and networking markets.
MBU
MBU [Member]
Mobile Business Unit (MBU) includes memory products sold into smartphone and other mobile-device markets.
SBU
SBU [Member]
Storage Business Unit (SBU) includes SSDs and component-level solutions sold into enterprise and cloud, client, and consumer storage markets as well as other discrete storage products sold in component and wafer forms to the removable storage markets and sales of 3D XPoint memory.
EBU
EBU [Member]
Embedded Business Unit (EBU) includes memory products sold into automotive, industrial, and consumer markets.
All Other
Other Segments [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Reportable Segments
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Number of reportable segments
Number of Reportable Segments
Segment Reporting Information, Additional Information [Abstract]
Segment Reporting Information, Additional Information [Abstract]
Goodwill
Goodwill
Net sales
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Operating income (loss)
Segment Reporting Information, Operating Income (Loss) [Abstract]
Stock-based compensation
Share-based Payment Arrangement, Expense
Employee severance
Severance Costs
Start-up and preproduction costs
Pre-Opening Costs
Restructure and asset impairments
Flow-through of Inotera 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.
Other
Operating income (loss)
Depreciation and amortization
Depreciation, Depletion and Amortization [Abstract]
Depreciation and amortization expense by segment
Schedule of Other Nonoperating Income (Expense), Net
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
Income Taxes
Income Tax Disclosure [Text Block]
Schedule of Restricted Stock Awards Activity
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Schedule of Option Activity
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Stock Options Granted and Valuation Assumptions
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Employee Stock Purchase Plan Valuation Assumptions
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]
Stock-based Compensation Expense by Caption
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Common stock issued (in shares)
Price of common shares issued (in dollars per share)
Shares Issued, Price Per Share
Proceeds from common stock issuance
Proceeds from Issuance of Common Stock
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation and Qualifying Accounts
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Earnings Per Share Reconciliation [Abstract]
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Micron - Basic
Assumed conversion of debt
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities
Net income attributable to Micron - Diluted
Net Income (Loss) Attributable to Parent, Diluted
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - Basic (in shares)
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)
Earnings per share
Earnings Per Share, Basic and Diluted [Abstract]
Statement of Financial Position [Abstract]
Short-term investments
Total current assets
Long-term marketable investments
Intangible assets
Intangible Assets, Net (Excluding Goodwill)
Total assets
Liabilities and equity
Liabilities and Equity [Abstract]
Total current liabilities
Noncurrent unearned government incentives
Unearned Government Incentives, Noncurrent
Liability for government incentives (proceeds from government agencies to incentivize certain types of investments, improvements, behaviors, etc.) that are expected to be recognized (earned) after one year or beyond the normal operating cycle, if longer.
Total liabilities
Commitments and contingencies
Commitments and Contingencies
Redeemable convertible notes
Temporary Equity, Carrying Amount, Attributable to Parent
Redeemable noncontrolling interest
Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount
Micron shareholders' equity
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, $0.10 par value, 3,000 shares authorized, 1,182 shares issued and 1,106 outstanding (1,170 shares issued and 1,161 outstanding as of August 30, 2018)
Common Stock, Value, Issued
Additional capital
Additional Paid in Capital, Common Stock
Treasury stock, 76 shares held (9 shares as of August 30, 2018)
Treasury Stock, Common, Value
Accumulated other comprehensive income
Total Micron shareholders' equity
Stockholders' Equity Attributable to Parent
Noncontrolling interests in subsidiaries
Total equity
Total liabilities and equity
Liabilities and Equity
Schedule of Derivative Instruments
Schedule of Derivative Instruments [Table Text Block]
Schedule of Gains and Losses on Fair Value Hedges
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]
Schedule of Results by Segment
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Revenue and Contract Liabilities
Revenue from Contract with Customer [Text Block]
Employee Benefit Plans
Pension and Other Postretirement Benefits Disclosure [Text Block]
Other Operating (Income) Expense, Net
Other Operating Income and Expense [Text Block]
Capital lease obligations
Capital Lease Obligations [Member]
2025 Notes
Unsecured senior corporate debt due 2025 [Member]
Unsecured senior corporate debt due 2025 [Member]
Credit Facility
Credit Facility 2018 [Member]
Credit facility agreement originally entered into in 2018.
Revolving credit facility
Revolving Credit Facility Component [Member]
Revolving Credit Facility 5 - arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.
Term loan facility
Term Loan Facility Component [Member]
Term loan facility component available under master credit facility.
Consolidated Entities
Consolidated Entities [Axis]
Consolidated Entities
Consolidated Entities [Domain]
Micron Technology, Inc.
Parent Company [Member]
Variable Rate
Variable Rate [Axis]
Variable Rate
Variable Rate [Domain]
LIBOR
London Interbank Offered Rate (LIBOR) [Member]
Weighted Average
Weighted Average [Member]
Long-term Debt, by Current and Noncurrent [Abstract]
Long-term Debt, by Current and Noncurrent [Abstract]
Stated Rate (in ten thousandths)
Debt Instrument, Interest Rate, Stated Percentage
Effective Rate (in ten thousandths)
Debt Instrument, Interest Rate, Effective Percentage
Principal
Long-term Debt, Gross
Current
Long-Term
Total Net Carrying Amount
Derivative debt liability
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value
Principal amount elected to be settled in cash
Subordinated Debt
Subordinated Debt
Leases, Capital [Abstract]
Leases, Capital [Abstract]
Capital lease obligations incurred
Lease Obligation Incurred
Weighted-average effective interest rate
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.
Weighted-average expected term
Debt Instrument, Term
Senior Unsecured Notes [Abstract]
Unsecured Debt [Abstract]
Subsidiary ownership percentage by parent resulting in potential activity restriction
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.
Redemption price percentage upon change in control
Debt Instrument, Redemption Price, Percentage
Redemption option at par, period prior to maturity
Debt Instrument, Redemption Option at Par, Period Prior to Maturity
For a debt instrument with redemption features, the period of time prior to maturity during which the debt may be redeemed at par value, in 'PnYnMnD' format.
Convertible Senior Notes [Abstract]
Convertible Debt [Abstract]
Conversion Price Per Share
Debt Instrument, Convertible, Conversion Price
Conversion Price Per Share Threshold (dollars per share)
Debt Instrument, Convertible, Stock Price Trigger
Underlying Shares of Common Stock (in shares)
Debt Instrument, Convertible, Number of Equity Instruments
Conversion Value in Excess of Principal
Debt Instrument, Convertible, If-converted Value in Excess of Principal
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
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, 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.
Interest Costs Incurred [Abstract]
Interest Costs Incurred [Abstract]
Contractual interest expense
Interest Expense, Debt, Excluding Amortization
Amortization of debt discount and issuance costs
Equity component of convertible debt included in additional paid in capital
Debt Instrument, Convertible, Carrying Amount of Equity Component
Credit Facility [Abstract]
Other Long-term Debt [Abstract]
Line of credit facility, Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Margin on variable rate financing (in hundredths)
Debt Instrument, Basis Spread on Variable Rate
Percentage of original principal to be repaid annually
Debt Instrument, Annual Principal Payment, Percentage of Original Principal
The percentage of original principal that is to be repaid annually.
Debt Covenant, Ratio Of Total Debt To Adjusted EBITDA
Debt Instrument, Covenant, Ratio Of Total Debt To Adjusted EBITDA
Ratio of total debt divided by adjusted earnings before interest, taxes, depreciation, and amortization (EBITDA) required to comply with debt covenants.
Debt Covenant, Ratio of Adjusted EBITDA to Net Interest Expense
Debt Instrument, Covenant, Ratio of Adjusted EBITDA to Net Interest Expense
Debt Instrument, Covenant, Ratio of Adjusted EBITDA to Net Interest Expense
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]
U.S.
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Foreign
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Income tax (provision) benefit
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current [Abstract]
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal
Current Federal Tax Expense (Benefit)
State
Current State and Local Tax Expense (Benefit)
Foreign
Current Foreign 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)
Property, Plant, and Equipment
Property, Plant and Equipment Disclosure [Text Block]
Schedule of Other Operating (Income) Expense, Net
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
Schedule of Inotera Acquisition
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Pro Forma Information including Inotera
Business Acquisition, Pro Forma Information [Table Text Block]
Deferred tax liability, undistributed foreign earnings
Deferred Tax Liabilities, Undistributed Foreign Earnings
Undistributed earnings of foreign subsidiaries deemed indefinitely reinvested
Undistributed Earnings of Foreign Subsidiaries
Deferred Tax Assets Abstract]
Deferred Tax Assets, Tax Deferred Expense [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
Property, plant, and equipment
Deferred Tax Assets, Property, Plant and Equipment
Other
Deferred Tax Assets, Other
Gross deferred tax assets
Deferred Tax Assets, Gross
Less valuation allowance
Deferred Tax Assets, Valuation Allowance
Deferred tax assets, net of valuation allowance
Deferred Tax Assets, Net of Valuation Allowance
Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities, Gross [Abstract]
Product and process technology
Deferred Tax Liabilities, Intangible Assets
Property, plant, and equipment
Deferred Tax Liabilities, Property, Plant and Equipment
Other
Deferred Tax Liabilities, Other
Deferred tax liabilities
Deferred Tax Liabilities, Gross
Net deferred tax assets
Deferred Tax Assets, Net
Reported as [Abstract]
Deferred Tax Assets, Net [Abstract]
Deferred tax liabilities (included in other noncurrent liabilities)
Deferred Income Tax Liabilities, Net
Related Party
Related Party [Axis]
Related Party
Related Party [Domain]
Joint Venture Partner (Counterparty)
Counterparty Name [Axis]
Joint Venture Partner (Counterparty)
Counterparty Name [Domain]
Nanya and certain of its affiliates
Nanya [Member]
Nanya Technology Corporation ("Nanya") from which other receivables are recorded for amounts related to DRAM development costs under a cost sharing agreement.
Sale of Stock
Sale of Stock [Axis]
Sale of Stock
Sale of Stock [Domain]
Shares Issued to Nanya
Private Placement [Member]
Acquisition of Inotera
Ownership interest in Inotera immediately prior to acquisition (in hundredths)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage
Percentage interest in Inotera held by Nanya immediately prior to 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 interests acquired (in hundredths)
Business Acquisition, Percentage of Voting Interests Acquired
Pre-acquisition purchases of DRAM products from Inotera
Unrecorded Unconditional Purchase Obligation, Purchases
Transaction costs incurred in connection with acquisition of Inotera
Business Combination, Acquisition Related Costs
Micron Shares
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
Proceeds from issuance of stock to Nanya
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
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
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 Financial Information
Business Acquisition, Pro Forma Information [Abstract]
Net sales
Business Acquisition, Pro Forma Revenue
Net Income
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 attributable to Micron
Business Acquisition, Pro Forma Net Income (Loss)
Earnings per share, basic (in dollars per share)
Business Acquisition, Pro Forma Earnings Per Share, Basic
Earnings per share, diluted (in dollars per share)
Business Acquisition, Pro Forma Earnings Per Share, Diluted
Schedule of Quarterly Financial Information
Quarterly Financial Information [Table Text Block]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]
Valuation Allowances and Reserves Type
SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]
Valuation Allowances and Reserves
SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]
Deferred Tax Assets Valuation Allowance
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Accounting Standards Update 2016-09
Accounting Standards Update 2016-09 [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year
SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount
Charged to Income Tax Provision
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense
(Credited) to Income Tax Provision
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction
Currency Translation and Charges to Other Accounts
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account
Currency Translation and Charges to Other Accounts (Credited)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment
Balance at End of Year
Schedule of Property, Plant, and Equipment [Table]
Land
Land [Member]
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.
Construction in progress
Construction in Progress [Member]
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
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 leased assets, accumulated depreciation
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation
Depreciation [Abstract]
Depreciation [Abstract]
Depreciation expense
Depreciation
Capitalized Interest Costs [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
Derivative [Table]
Derivative [Table]
Derivative [Line Items]
Derivative [Line Items]
Notional Disclosures [Abstract]
Notional Disclosures [Abstract]
Gross Notional Amount, Currency forwards
Derivative, Notional Amount
Gross Notional Amount, Convertible notes settlement obligation (in shares)
Derivative, Nonmonetary Notional Amount
Derivative, Fair Value, Net [Abstract]
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
General maturity of currency forward contracts (in months)
Maximum Remaining Maturity of Foreign Currency Derivatives
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]
Product and process technology
Technology-Based Intangible Assets [Member]
In-process R&D placed into service
Technology-Based Assets Previously Classified As In Process Research and Development [Member]
Technology-based assets that were previously classified as in process research and development (non-amortizing) and were subsequently completed, moved into service, and given finite useful lives.
Amortizing assets [Line Items]
Gross Amount, Product and process technology
Finite-Lived Intangible Assets, Gross
Accumulated Amortization, Product and process technology
Finite-Lived Intangible Assets, Accumulated Amortization
Increase in amortizing intangible assets
Finite-Lived Intangible Assets, Period Increase (Decrease)
Useful lives of assets placed into service
Annual amortization expense for intangible assets [Abstract]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
2021
Finite-Lived Intangible Assets, Amortization Expense, Year Two
2022
Finite-Lived Intangible Assets, Amortization Expense, Year Three
2023
Finite-Lived Intangible Assets, Amortization Expense, Year Four
2024
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Gross Amount, In-process R&D
Indefinite-lived Intangible Assets (Excluding Goodwill)
Intangible Assets, Gross (Excluding Goodwill)
Intangible Assets, Gross (Excluding Goodwill)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Income Statement Location
Income Statement Location [Axis]
Income Statement Location
Income Statement Location [Domain]
Cost of Goods Sold
Cost of Sales [Member]
Selling, general, and administrative
Selling, General and Administrative Expenses [Member]
Research and development
Research and Development Expense [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense
Share-based Payment Arrangement, Additional Disclosure [Abstract]
Tax benefit from compensation expense
Share-based Payment Arrangement, Expense, Tax Benefit
Stock compensation expense capitalized and remained in inventory
Other Inventory, Capitalized Costs, Gross
Total unrecognized compensation costs related to non-vested awards expected to be recognized
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Weighted average period that unrecognized compensation costs is expected to be recognized (in years)
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts payable
Accounts Payable, Trade, Current
Property, plant, and equipment
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
Income and other taxes
Taxes Payable, Current
Other
Accounts Payable, Other, Current
Total accounts payable and accrued expenses
Concentration Risk [Table]
Concentration Risk [Table]
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]
Mobile
Mobile Market [Member]
Products sold into mobile product markets.
Client and graphics
Client and Graphics Market [Member]
Products sold into the computing market including personal systems, notebooks, workstations and graphics.
Enterprise and cloud server
Enterprise and Cloud Server Market [Member]
Products sold into enterprise and cloud server markets.
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, and consumer
Automotive, Industrial, and Consumer Market [Member]
Products sold into the automotive and industrial markets as well as consumer products.
Huawei
Huawei Technologies Co., Ltd. [Member]
Huawei Technologies Co., Ltd.
Kingston
Kingston [Member]
Kingston Technology, Inc.
Concentration Risk [Line Items]
Concentration Risk [Line Items]
Concentration Risk, Percentage
Tax Credit Carryforward [Table]
Tax Credit Carryforward [Table]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards
Tax Credit Carryforward, Amount
Schedule of Stock by Class [Table]
Schedule of Stock by Class [Table]
Class of Stock [Line Items]
Class of Stock [Line Items]
Treasury shares included in sale of shares to Nanya (in shares)
Stock Issued During Period, Shares, Treasury Stock Reissued
Decrease in retained earnings (decrease in treasury stock) due to reissuance of treasury shares at price lower than purchase price
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
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
Increases related to tax positions from prior years
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions
Increases related to tax positions taken in current year
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Decreases related to tax positions from prior years
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Settlements with tax authorities
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities
Increases due to the Inotera Acquisition
Unrecognized Tax Benefits, Increase Resulting from Acquisition
Other
Unrecognized Tax Benefits, Other Increase (Decrease)
Amount of increase (decrease) in unrecognized tax benefits resulting from other changes.
Ending unrecognized tax benefits
ASU 2016-16
Accounting Standards Update 2016-16 [Member]
Deferred Tax Asset Valuation Allowance
Summary of Valuation Allowance [Table Text Block]
Equity
Stockholders' Equity Note Disclosure [Text Block]
Tax benefit from incentive arrangements
Income Tax Holiday, Aggregate Dollar Amount
Tax benefit per diluted share from incentive arrangements
Income Tax Holiday, Income Tax Benefits Per Share
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, outstanding (in shares)
Common Stock, Shares, Outstanding
Treasury Stock, held (in shares)
Treasury Stock, Common, Shares
Schedule of Intangible Assets and Goodwill
Schedule of Intangible Assets and Goodwill [Table Text Block]
Inventories
Inventory Disclosure [Text Block]