v2.4.0.6
Document and Entity Information (USD $)
12 Months Ended
Dec. 30, 2012
Feb. 15, 2013
Jul. 01, 2012
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 30, 2012    
Document Fiscal Year Focus 2012    
Document Fiscal Period Focus FY    
Trading Symbol CY    
Entity Registrant Name CYPRESS SEMICONDUCTOR CORP /DE/    
Entity Central Index Key 0000791915    
Current Fiscal Year End Date --12-30    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   145,984,047  
Entity Public Float     $ 1,800,000,000