v3.19.3
Cover page - shares
9 Months Ended
Sep. 29, 2019
Oct. 25, 2019
Cover page.    
Document Type 10-Q  
Entity Registrant Name SUNPOWER CORP  
Entity Central Index Key 0000867773  
Current Fiscal Year End Date --12-29  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Document Quarterly Report true  
Document Period End Date Sep. 29, 2019  
Document Transition Report false  
Entity File Number 001-34166  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 94-3008969  
Entity Address, Address Line One 51 Rio Robles  
Entity Address, City or Town San Jose  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 95134  
City Area Code 408  
Local Phone Number 240-5500  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Title of 12(b) Security Common Stock  
Trading Symbol SPWR  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding (in shares)   142,612,199
Amendment Flag false