Contract With Customer, Increase Due To Safe Harbor Prepayments

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RELATED PARTY Narrative (Details) - USD ($) shares in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2018
Related Party Transaction [Line Items]
Safe harbor payment		$ 49,909,000
SunPower’s
Related Party Transaction [Line Items]
Common stock held by related party (in shares)		6.5	7.5
Revenue from related parties		$ 70,900,000	$ 12,400,000
Accounts receivable, related parties	$ 15,900,000	15,900,000	10,300,000
Safe harbor payment	5,200,000
Convertible Notes \| Convertible Senior Notes Due 2023
Related Party Transaction [Line Items]
Debt instrument face amount	5,000,000.0	5,000,000.0		$ 65,000,000.0
Thurman John Rodgers \| Convertible Notes \| Convertible Senior Notes Due 2023
Related Party Transaction [Line Items]
Debt instrument face amount	$ 5,000,000	$ 5,000,000	$ 5,000,000.0