Accounts, Notes, Loans and Financing Receivable, Net, Current Receivables Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts payable and accrued expenses Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Additional Paid in Capital, Common Stock Additional capital Statement of Financial Position [Abstract] Cash and Cash Equivalents, at Carrying Value Cash and equivalents Cash and equivalents at beginning of period Cash and equivalents at end of period Interest Paid, Net Interest paid, net of amounts capitalized Increase (Decrease) in Inventories (Increase) decrease in inventories Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Increase (decrease) in accounts payable and accrued expenses Increase (Decrease) in Receivables (Increase) decrease in receivables Increase (Decrease) in Operating Capital [Abstract] Change in operating assets and liabilities: Common Stock, Shares Authorized Common Stock, authorized shares Common Stock, Shares, Outstanding Common Stock, outstanding shares Common Stock, Value, Issued Common stock, $0.10 par value, authorized 3,000 shares, issued and outstanding 849.8 million and 848.7 million shares, respectively Comprehensive Income Note [Text Block] Comprehensive Income (Loss) Cost of Goods and Services Sold Cost of goods sold Inventory Write-down Provision to write down inventories to estimated market values Liabilities, Current Total current liabilities Deferred Revenue, Current Deferred income Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments Earnings Per Share, Diluted Diluted Income (Loss) from Equity Method Investments Equity in net losses of equity method investees, net of tax Equity in net losses of equity method investees, net of tax Equity Method Investments Equity method investments Fiscal Period Fiscal year Gain (Loss) on Sale of Property Plant Equipment (Gain) loss from disposition of property, plant and equipment Gross Profit Gross margin Income Statement [Abstract] Income Tax Disclosure [Text Block] Income Taxes Income Taxes Paid, Net Income taxes paid, net Restructuring Costs Noncash restructure charges (credits) Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Interest Expense Interest expense Interest expense Inventory, Net Inventories Liabilities and Stockholders' Equity [Abstract] Liabilities and equity Liabilities and Stockholders' Equity Total liabilities and equity Liabilities Total liabilities Long-term Debt, Current Maturities Current portion of long-term debt Long-term Debt, Excluding Current Maturities Long-term debt Available-for-sale Securities, Current Short-term investments Noncontrolling Interest Disclosure [Text Block] TECH Semiconductor Singapore Pte. Ltd. Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interests in subsidiaries Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities Net cash used for financing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities Net cash used for investing activities Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Income (Loss) Attributable to Parent Net income (loss) attributable to Micron Cash and Cash Equivalents, Period Increase (Decrease) Net increase (decrease) in cash and equivalents New Accounting Pronouncement or Change in Accounting Principle, Description Recently adopted accounting standards Description of New Accounting Pronouncements Not yet Adopted Recently issued accounting standards Operating Income (Loss) Operating income (loss) Increase (Decrease) in Other Operating Assets and Liabilities, Net Other Other Assets, Current Other current assets Payments for (Proceeds from) Other Investing Activities Other Other Proceeds from (Payments for) Other Financing Activities Other Other Nonoperating Income (Expense) Other non-operating income (expense), net Proceeds from Noncontrolling Interests Contributions from noncontrolling interests Proceeds from Issuance of Long-term Debt Proceeds from debt Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from maturities of available-for-sale securities Proceeds from Sale of Available-for-sale Securities Proceeds from sales of available-for-sale securities Proceeds from Sale of Property, Plant, and Equipment Proceeds from sales of property, plant and equipment Property, Plant and Equipment, Net Property, plant and equipment, net Payments to Acquire Available-for-sale Securities Purchases of available-for-sale securities Purchases of available-for-sale securities Payments to Acquire Equity Method Investments Acquisition of equity method investment Acquisition of equity method investment Payments to Acquire Property, Plant, and Equipment Expenditures for property, plant and equipment Expenditures for property, plant and equipment Receivables, Net, Current Receivables Repayments of Long-term Debt Repayments of debt Repayments of debt Payments to Noncontrolling Interests Distributions to noncontrolling interests Distributions to noncontrolling interests Restructuring Charges Restructure Restructure Restructuring and Related Activities Disclosure [Text Block] Restructure Retained Earnings (Accumulated Deficit) Accumulated deficit Sales Revenue, Net Net sales Equity Method Investments [Text Block] Equity method investments Inventory Disclosure [Text Block] Inventories Loss Contingency Disclosures Contingencies Property, Plant and Equipment [Text Block] Property, plant and equipment Segment Reporting Disclosure [Text Block] Segment Information Selling, General and Administrative Expense Selling, general and administrative Selling, general and administrative Supplemental Cash Flow Information [Abstract] Supplemental disclosures Assets, Current Total current assets Schedule of Variable Interest Entities [Text Block] Consolidated Variable Interest Entities Weighted Average Number of Shares Outstanding, Diluted Diluted Weighted Average Number of Shares Outstanding, Basic Basic Research and Development Expense Research and development Research and development Assets Total assets Intangible Assets Disclosure [Text Block] Intangible assets, net Investment Income, Interest Interest income Other Liabilities, Noncurrent Other liabilities Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Equity Plans Statement [Table] Assets [Abstract] Assets Statement [Line Items] Fair Value, Measurement Inputs, Disclosure [Text Block] Fair Value Measurements Earnings Per Share, Basic Basic Common Stock, Shares, Issued Common Stock, issued shares Increase Decrease In Deferred Revenue Increase in deferred income Other Assets, Noncurrent Other assets Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Common Stock, Par or Stated Value Per Share Common stock, par value Stockholders' Equity Attributable to Parent Total Micron shareholders' equity Income Tax Expense (Benefit) Income tax (provision) Income tax (provision) benefit Capital Expenditures Incurred but Not yet Paid Equipment acquisitions on contracts payable and capital leases Long-term Debt [Text Block] Debt Basis of Accounting Basis of presentation Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Noncash investing and financing activities: Earnings Per Share [Text Block] Earnings Per Share Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) Net income (loss) Net Income (Loss) Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interests Depreciation, Depletion and Amortization Depreciation and amortization Schedule of Accounts, Notes, Loans and Financing Receivable [Text Block] Receivables Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total equity Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued expenses Commitments and Contingencies Commitments and contingencies Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Entity Information [Line Items] Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Information [Line Items] Document Type Amendment Flag Amendment Description Document Period End Date Equipment purchase contracts Short-term payables arising from purchases of equipment. Amount represents a short-term payable to equipment suppliers that was withheld until such time as the equipment is deemed to meet buyers' specifications. Other operating (income) expense, net The total net amount of other operating income and other operating expense, not previously categorized, from items that are associated with the entity's normal revenue producing operation. Other operating (income) expense, net Earnings (loss) per share: Net Income (Loss) Per Share [Abstract]