Document and Entity Information Document - USD ($) $ in Billions	12 Months Ended
	Aug. 29, 2019	Oct. 10, 2019	Feb. 28, 2019
Cover page.
Entity Registrant Name	MICRON TECHNOLOGY INC
Entity Central Index Key	0000723125
Current Fiscal Year End Date	--08-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Aug. 29, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		1,107,050,823
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 36.2
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false