Document and Entity Information	3 Months Ended
	Feb. 28, 2013	Feb. 29, 2012
Document Documentand Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Feb. 28, 2013
Document Fiscal Year Focus	2013	2012
Document Fiscal Period Focus	Q1
Trading Symbol	OMN
Entity Registrant Name	OMNOVA SOLUTIONS INC
Entity Central Index Key	0001090061
Current Fiscal Year End Date	--11-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding	47,057,626