v2.4.1.9

Equity Method Investments (Details) | 3 Months Ended |  | 3 Months Ended |  |  | 3 Months Ended |  | 3 Months Ended |  | 12 Months Ended | 3 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 04, 2014 USD ($) | Nov. 28, 2013 USD ($) | Aug. 28, 2014 USD ($) | Dec. 04, 2014 Inotera [Member] USD ($) | Nov. 28, 2013 Inotera [Member] USD ($) | Dec. 04, 2014 Inotera [Member] TWD | Aug. 28, 2014 Inotera [Member] USD ($) | Dec. 04, 2014 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Nov. 28, 2013 Inotera [Member] Inventories [Member] DRAM [Member] USD ($) | Dec. 04, 2014 Inotera [Member] Nanya [Member] | Dec. 04, 2014 Inotera [Member] Variable interest entity, not primary beneficiary [Member] USD ($) | Dec. 04, 2014 Tera Probe [Member] USD ($) | Nov. 28, 2013 Tera Probe [Member] USD ($) | Aug. 28, 2014 Tera Probe [Member] USD ($) | Aug. 29, 2013 Tera Probe [Member] MMJ Acquisition [Member] | Dec. 04, 2014 Other [Member] USD ($) | Nov. 28, 2013 Other [Member] USD ($) | Aug. 28, 2014 Other [Member] USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Balance | $ 1,080,000,000 us-gaap_EquityMethodInvestments |  | $ 971,000,000 us-gaap_EquityMethodInvestments | $ 1,028,000,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  | $ 914,000,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember | [1] |  |  |  |  | $ 36,000,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  | $ 48,000,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  | $ 16,000,000 us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember |  | $ 9,000,000 us-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] |  |  |  |  | 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 |  |  |  |  |  |  |  |  |  |  |  |  | 1,028,000,000 mu_VariableInterestEntityEntityMaximumLossExposureAmountFromInvestmentBalance / dei_LegalEntityAxis = us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |
Equity in net income of equity method investees, net of tax | 124,000,000 us-gaap_IncomeLossFromEquityMethodInvestments | 86,000,000 us-gaap_IncomeLossFromEquityMethodInvestments |  | 129,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  | 84,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  | (7,000,000)us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember | 2,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  | 2,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_OtherEquityMethodInvetmentsMember | 0 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 |  |  |  | 3,370,000,000 us-gaap_EquityMethodInvestmentQuotedMarketValue / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Quoted Market Price Per Share |  |  |  |  |  |  | 48.90 mu_EquityMethodInvestmentQuotedMarketPricePerShare / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |  |
Amount in accumulated other comprehensive income (loss) for cumulative translation adjustments on its investment |  |  |  | 25,000,000 us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  | 44,000,000 us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember |  |  |  |  |  |  |  |  |  |  |  |
Purchases of DRAM products from Inotera |  |  |  |  |  |  |  |  |  | 729,000,000 us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases / us-gaap_ProductOrServiceAxis = mu_DramMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_InoteraMember / us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis = us-gaap_InventoriesMember | 587,000,000 us-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 |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 us-gaap_EquityMethodInvestmentOtherThanTemporaryImpairment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mu_TeraProbeMember |  |  |  |  |  |
Difference between cost of Tera Probe investment and underlying equity |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 34,000,000 us-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 Item represents the weighted average number of years over which the amortization of the difference, between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee is being recognized. + References No definition available. + Details
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- Definition Ownership percentage held by a third party in an entity in which registrant also owns an equity interest. + References No definition available. + Details
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- Definition This item represents the quoted market price per share of each identified investment accounted for under the equity method of accounting based for those investments in common stock for which a quoted market price is available. + References No definition available. + Details
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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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- Definition Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=35687916&loc=d3e32787-111569 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the aggregate value of each identified investment accounted for under the equity method of accounting based on the quoted market price for those investments in common stock for which a quoted market price is available. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.12) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 7 + Details
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- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. + References No definition available. + Details
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- Definition The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308 + Details
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