XML 14 R1.htm IDEA: XBRL DOCUMENT v3.26.1
Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2025
Apr. 13, 2026
Jun. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 28, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Information [Line Items]      
Entity Registrant Name SUNPOWER INC.    
Entity Central Index Key 0001838987    
Entity File Number 001-40117    
Entity Tax Identification Number 93-2279786    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-28    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period true    
Entity Public Float     $ 85.2
Entity Incorporation, Date of Incorporation Feb. 22, 2010    
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One 1403 N. Research Way    
Entity Address, City or Town Orem    
Entity Address, State or Province UT    
Entity Address, Postal Zip Code 84097    
Entity Phone Fax Numbers [Line Items]      
City Area Code (877)    
Local Phone Number 299-4943    
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   126,652,769  
Common stock, par value $0.0001 per share      
Entity Listings [Line Items]      
Title of 12(b) Security Common stock, par value $0.0001 per share    
Trading Symbol SPWR    
Security Exchange Name NASDAQ    
Redeemable warrants, each whole warrant exercisable for one share of common stock      
Entity Listings [Line Items]      
Title of 12(b) Security Redeemable warrants, each whole warrant exercisable for one common stock    
Trading Symbol SPWRW    
Security Exchange Name NASDAQ