Document and Entity Information Document - USD ($)
12 Months Ended
Aug. 31, 2017
Oct. 20, 2017
Mar. 02, 2017
Document and Entity Information [Abstract]      
Entity Registrant Name MICRON TECHNOLOGY INC    
Entity Central Index Key 0000723125    
Current Fiscal Year End Date --08-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Aug. 31, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   1,153,255,224  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 20,500,000,000