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TRANSACTIONS WITH SUNPOWER AND TOTALENERGIES - Sales to SunPower (Details) - Related party - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Jan. 01, 2023
Jan. 02, 2022
Related Party Transaction [Line Items]      
Revenues from related parties $ 206.0 $ 283.3 $ 225.9
Accounts receivable $ 0.6 $ 5.4