Document and Entity Information	3 Months Ended
	Oct. 31, 2017 shares
Entity Information
Entity Registrant Name	Oil-Dri Corp of America
Entity Central Index Key	0000074046
Current Fiscal Year End Date	--07-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Oct. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Stock
Entity Information
Entity Common Stock, Shares Outstanding	5,136,614
Common Class B
Entity Information
Entity Common Stock, Shares Outstanding	2,182,381