v2.4.1.9
Equity - Restrictions on Net Assets (Details) (USD $)
In Millions, unless otherwise specified
Mar. 05, 2015
MMJ Group [Member]  
Restrictions for Consolidated and Unconsolidated Subsidiaries [Abstract]  
Amount of restricted net assets for consolidated subsidiaries $ 3,110us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
/ dei_LegalEntityAxis
= mu_MMJGroupMember
MMJ Group [Member] | Cash and Cash Equivalents [Member]  
Restrictions for Consolidated and Unconsolidated Subsidiaries [Abstract]  
Amount of restricted net assets for consolidated subsidiaries 1,320us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_CashAndCashEquivalentsMember
/ dei_LegalEntityAxis
= mu_MMJGroupMember
IM Flash Technologies, LLC [Member]  
Restrictions for Consolidated and Unconsolidated Subsidiaries [Abstract]  
Amount of restricted net assets for consolidated subsidiaries $ 788us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
/ dei_LegalEntityAxis
= mu_ImFlashTechnologiesLlcMember