v2.4.0.6
Document And Entity Information
9 Months Ended
Oct. 02, 2011
Oct. 31, 2011
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Oct. 02, 2011  
Document Fiscal Year Focus 2011  
Document Fiscal Period Focus Q3  
Trading Symbol cy  
Entity Registrant Name CYPRESS SEMICONDUCTOR CORP /DE/  
Entity Central Index Key 0000791915  
Current Fiscal Year End Date --01-01  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   154,866,444