| Cover | Apr. 21, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 21, 2020 |
| Entity File Number | 1-10658 |
| Entity Registrant Name | Micron Technology, Inc. |
| Entity Central Index Key | 0000723125 |
| Entity Tax Identification Number | 75-1618004 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 8000 South Federal Way |
| Entity Address, City or Town | Boise |
| Entity Address, State or Province | ID |
| Entity Address, Postal Zip Code | 83716-9632 |
| City Area Code | 208 |
| Local Phone Number | 368-4000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.10 per share |
| Trading Symbol | MU |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
