Document and Entity Information	9 Months Ended
	Apr. 30, 2012
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	Apr. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock
Entity Information
Entity Common Stock, Shares Outstanding	5,039,241
Common Class B
Entity Information
Entity Common Stock, Shares Outstanding	2,050,118