Equity Investments - Consolidated VIEs (Details)	3 Months Ended	9 Months Ended
	Sep. 27, 2020 USD ($)	Sep. 27, 2020 USD ($)	Dec. 29, 2019 USD ($)	Sep. 29, 2019 USD ($) MW
Variable Interest Entity [Line Items]
Debt face amount	$ 894,773,000	$ 894,773,000	$ 986,244,000
Assets	1,449,309,000	1,449,309,000	$ 2,171,921,000
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Revenue	4,700,000	8,100,000
Assets				$ 121,400,000
SunPower Corp
Variable Interest Entity [Line Items]
Equity contributions by other parties				6,000,000.0
Hannon Armstrong
Variable Interest Entity [Line Items]
Equity contributions by other parties				$ 6,000,000.0
Solar Sail
Variable Interest Entity [Line Items]
Inventory financed | MW				200
Solar Sail | Hannon Armstrong
Variable Interest Entity [Line Items]
Debt face amount	$ 112,600,000	$ 112,600,000