v2.4.1.9

Equity Method Investments - 2 (Details) (Tera Probe [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Mar. 05, 2015 | Feb. 27, 2014 | Mar. 05, 2015 | Feb. 27, 2014
Tera Probe [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related party purchases from Tera Probe | $ 22us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = mu_TeraProbeMember | $ 31us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = mu_TeraProbeMember | $ 47us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = mu_TeraProbeMember | $ 64us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = mu_TeraProbeMember

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration