Equity Investments - Consolidated VIEs (Details)	3 Months Ended	6 Months Ended
	Jun. 28, 2020 USD ($)	Jun. 28, 2020 USD ($)	Mar. 29, 2020 USD ($)	Dec. 29, 2019 USD ($) MW	Jun. 30, 2019 USD ($)
Variable Interest Entity [Line Items]
Debt face amount	$ 957,671,000	$ 957,671,000		$ 1,045,966,000
Assets	1,938,523,000	1,938,523,000		$ 2,171,921,000
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Revenue	$ 2,800,000	$ 3,500,000
Assets					$ 117,500,000
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