Segment and Geographical Information - Reconciliation of Other Significant Reconciling Items from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 352,914	$ 436,281	$ 802,104	$ 784,506
Segment gross profit as reviewed by CODM	21,598	19,800	59,046	(17,485)
Adjusted EBITDA	22,355	118,105	21,841	17,657
SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	217,886	211,727	507,755	389,948
SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	135,028	224,554	294,349	394,558
Operating Segments
Segment Reporting Information [Line Items]
Total segment revenue as reviewed by CODM	388,320	572,288	931,570	1,044,647
Segment gross profit as reviewed by CODM	33,825	48,583	82,026	65,598
Adjusted EBITDA	(3,942)	14,042	3,187	(8,369)
Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Total segment revenue as reviewed by CODM	217,885	257,340	513,146	499,065
Segment gross profit as reviewed by CODM	38,526	24,114	73,800	41,987
Adjusted EBITDA	13,632	2,342	18,114	(11,569)
Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Total segment revenue as reviewed by CODM	170,435	314,948	418,424	545,582
Segment gross profit as reviewed by CODM	(4,701)	24,469	8,226	23,611
Adjusted EBITDA	(17,574)	11,700	(14,927)	3,200
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(35,406)	(90,416)	(124,281)	(151,216)
Segment gross profit as reviewed by CODM	628	2,157	9,391	9,793
Intersegment Eliminations \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Intersegment Eliminations \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	35,406	90,416	124,281	151,216
Channels \| Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	160,305	200,589	392,446	387,298
Channels \| Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
North America Commercial \| Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	48,183	44,149	96,233	89,212
North America Commercial \| Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Operations and maintenance \| Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	9,397	12,602	24,467	22,555
Operations and maintenance \| Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Module sales \| Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Module sales \| Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	137,760	211,751	301,821	380,691
Development services and legacy power plant \| Operating Segments \| SunPower Energy Services
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Development services and legacy power plant \| Operating Segments \| SunPower Technologies
Segment Reporting Information [Line Items]
Revenue	$ (2,731)	$ 12,781	$ (7,678)	$ 13,675

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