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Document and Entity Information - USD ($)
12 Months Ended
Mar. 30, 2019
May 17, 2019
Sep. 29, 2018
Document And Entity Information [Abstract]      
Entity Registrant Name MONRO, INC.    
Entity Central Index Key 0000876427    
Document Type 10-K    
Document Period End Date Mar. 30, 2019    
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --03-30    
Entity Well Known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Public Float     $ 2,231,200,000
Entity Common Stock Shares Outstanding   33,178,154  
Entity Shell Company false