| Document and Entity Information | Sep. 30, 2019 |
| Cover [Abstract] | |
| Entity Address, State or Province | NY |
| Amendment Flag | false |
| Entity Central Index Key | 0000876427 |
| Document Type | 8-K |
| Document Period End Date | Sep. 30, 2019 |
| Entity Registrant Name | MONRO, INC. |
| Entity Incorporation State Country Code | NY |
| Entity File Number | 0-19357 |
| Entity Tax Identification Number | 16-0838627 |
| Entity Address, Address Line One | 200 Holleder Parkway |
| Entity Address, City or Town | Rochester |
| Entity Address, Postal Zip Code | 14615 |
| City Area Code | (585) |
| Local Phone Number | 647-6400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $.01 per share |
| Trading Symbol | MNRO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
