v2.4.1.9

Equity Method Investments (Details) | 3 Months Ended | 6 Months Ended |  | 3 Months Ended | 6 Months Ended |  |  | 3 Months Ended | 6 Months Ended |  | 3 Months Ended |  | 3 Months Ended | 6 Months Ended |  |  | 12 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 05, 2015 USD ($) | Feb. 27, 2014 USD ($) | Mar. 05, 2015 USD ($) | Feb. 27, 2014 USD ($) | Aug. 28, 2014 USD ($) | Mar. 05, 2015 Inotera [Member] USD ($) | Feb. 27, 2014 Inotera [Member] USD ($) | Mar. 05, 2015 Inotera [Member] USD ($) | Feb. 27, 2014 Inotera [Member] USD ($) | Mar. 05, 2015 Inotera [Member] TWD | Aug. 28, 2014 Inotera [Member] USD ($) | Mar. 05, 2015 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Feb. 27, 2014 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Mar. 05, 2015 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Feb. 27, 2014 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Mar. 05, 2015 Inotera [Member] Nanya [Member] | Mar. 05, 2015 Inotera [Member] Income Tax Expense (Benefit), Adjustment of Deferred Tax (Asset) Liability [Member] USD ($) | Mar. 05, 2015 Inotera [Member] Variable interest entity, not primary beneficiary [Member] USD ($) | Mar. 05, 2015 Tera Probe [Member] USD ($) | Dec. 04, 2014 Tera Probe [Member] USD ($) | Feb. 27, 2014 Tera Probe [Member] USD ($) | Mar. 05, 2015 Tera Probe [Member] USD ($) | Feb. 27, 2014 Tera Probe [Member] USD ($) | Mar. 05, 2015 Tera Probe [Member] JPY (¥) | Aug. 28, 2014 Tera Probe [Member] USD ($) | Aug. 29, 2013 Tera Probe [Member] MMJ Acquisition [Member] | Mar. 05, 2015 Other [Member] USD ($) | Feb. 27, 2014 Other [Member] USD ($) | Mar. 05, 2015 Other [Member] USD ($) | Feb. 27, 2014 Other [Member] USD ($) | Aug. 28, 2014 Other [Member] USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Balance | $ 1,239,000,000us-gaap_EquityMethodInvestments |  | $ 1,239,000,000us-gaap_EquityMethodInvestments |  | $ 971,000,000us-gaap_EquityMethodInvestments | $ 1,190,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  | $ 1,190,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  | $ 914,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  |  |  |  |  |  | $ 32,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | $ 32,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | $ 48,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  | $ 17,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember |  | $ 17,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember |  | $ 9,000,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember
Ownership Percentage (in hundredths) |  |  |  |  |  | 33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  | 33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  | 33.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  |  |  |  |  |  | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | 40.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |
Variable Interest Entity Entity Maximum Loss Exposure Amount From Investment Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,190,000,000mu_VariableInterestEntityEntityMaximumLossExposureAmountFromInvestmentBalance / dei_LegalEntityAxis = us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |
Equity in net income of equity method investees, net of tax | 208,000,000us-gaap_IncomeLossFromEquityMethodInvestments | 134,000,000us-gaap_IncomeLossFromEquityMethodInvestments | 332,000,000us-gaap_IncomeLossFromEquityMethodInvestments | 220,000,000us-gaap_IncomeLossFromEquityMethodInvestments |  | 206,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  | 131,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | 335,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  | 215,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  | 65,000,000us-gaap_IncomeLossFromEquityMethodInvestments / mu_IncomeTaxesAxis = mu_IncomeTaxExpenseBenefitAdjustmentofDeferredTaxAssetLiabilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  | 1,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  | 4,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember | (6,000,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember | 6,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  | 1,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember | (1,000,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember | 3,000,000us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember | (1,000,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember |
Percentage interest held by a third party (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33.00%mu_EquityMethodInvestmentOwnershipPercentageHeldByThirdParty / mu_EntityWhichWePartnerWithInInvestmentAxis = mu_NanyaMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Market value of equity interests |  |  |  |  |  | 3,090,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  | 3,090,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  | 33,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | 33,000,000us-gaap_EquityMethodInvestmentQuotedMarketValue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |  |  |  |
Equity Method Investment, Quoted Market Price Per Share |  |  |  |  |  |  |  |  |  |  |  | 45.25mu_EquityMethodInvestmentQuotedMarketPricePerShare / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1,076mu_EquityMethodInvestmentQuotedMarketPricePerShare / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |  |
Amount in accumulated other comprehensive income (loss) for cumulative translation adjustments on its investment |  |  |  |  |  | (19,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  | (19,000,000)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  | 44,000,000us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of DRAM products from Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 628,000,000us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases / us-gaap_ProductOrServiceAxis = mu_DramMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember / us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis = us-gaap_InventoriesMember | 714,000,000us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases / us-gaap_ProductOrServiceAxis = mu_DramMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember / us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis = us-gaap_InventoriesMember | 1,360,000,000us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases / us-gaap_ProductOrServiceAxis = mu_DramMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember / us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis = us-gaap_InventoriesMember | 1,300,000,000us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases / us-gaap_ProductOrServiceAxis = mu_DramMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember / us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis = us-gaap_InventoriesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Percentage Ownership after All Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / us-gaap_BusinessAcquisitionAxis = mu_MMJAcquisitionMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |
Tera Probe other-than-temporary Impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |  |  |  |  |  |
Difference between cost of Tera Probe investment and underlying equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | $ 31,000,000us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |  |  |  |
Weighted-average period for remaining Tera Probe amortization (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |
[1] | (1) Entity is a variable interest entity.

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- Definition Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6915805&loc=d3e32022-110900 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 + Details
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