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Organization And Summary Of Significant Accounting Policies - Liquidity (Details) - USD ($)
$ in Thousands
Jun. 28, 2020
Dec. 29, 2019
Sep. 28, 2014
Jun. 30, 2014
Maxeon Solar        
Debt Instrument [Line Items]        
Line of credit facility, maximum borrowing capacity $ 325,000      
Convertible Debt        
Debt Instrument [Line Items]        
Convertible debt $ 731,050 $ 820,259    
0.875% debentures due 2021        
Debt Instrument [Line Items]        
Interest rate 0.875%     0.875%
0.875% debentures due 2021 | Convertible Debt        
Debt Instrument [Line Items]        
Interest rate     0.875%  
Convertible debt $ 309,700 $ 399,058    
0.875% debentures due 2021 | Convertible Debt | Total        
Debt Instrument [Line Items]        
Convertible debt $ 193,600