Document and Entity Information	6 Months Ended
	Mar. 30, 2012	May 14, 2012
Document and Entity Information (Abstract)
Entity Registrant Name	CONEXANT SYSTEMS INC
Entity Central Index Key	0001069353
Document Type	10-Q
Document Period End Date	Mar. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--09-30
Entity Filer Category	Non-accelerated Filer
Entity Common Stock Shares Outstanding		100,000,000