Transactions with Total and Total S.A. - Supply Agreements (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended					9 Months Ended
	Dec. 29, 2019	Sep. 27, 2020		Mar. 29, 2020	Sep. 29, 2019		Sep. 27, 2020		Sep. 29, 2019
Related Party Transaction [Line Items]
Revenue		$ 274,806			$ 286,042		$ 783,019		$ 690,608
Solar power systems, components, and other
Related Party Transaction [Line Items]
Revenue	$ 6,200	267,619	[1]		$ 277,280	[1]	765,316	[1]	$ 665,623	[1]
Total
Related Party Transaction [Line Items]
Revenue				$ 6,400
Total | Solar power systems, components, and other
Related Party Transaction [Line Items]
Revenue		$ 34,300					$ 65,700

[1] We have related-party transactions with Total SE and its affiliates as well as unconsolidated entities in which we have a direct equity investment. These related-party transactions are recorded within the "revenue: solar power systems, components, and other," "cost of revenue: solar power systems, components, and other," "operating expenses: research and development," and "other income (expense), net: interest expense" financial statement line items in our condensed consolidated statements of operations (see Note 3 and Note 11).