Document and Entity Information - shares	9 Months Ended
	Dec. 23, 2017	Jan. 19, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	MONRO, INC.
Entity Central Index Key	0000876427
Document Type	10-Q
Document Period End Date	Dec. 23, 2017
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		32,794,965