Equity Investments - Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020	Jan. 03, 2021
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 77,683		$ 77,683		$ 614,148
Equity investments without readily determinable fair value:	801		801		801
Equity investments with fair value option	8,374		8,374		9,924
Total equity investments	$ 397,578		$ 397,578		624,873
Enphase Shares
Schedule of Equity Method Investments [Line Items]
Investment shares sold (in shares)	1,000,000	1,000,000	1,000,000	2,000,000
Enphase Energy, Inc.
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 388,403		$ 388,403		614,148
Owned shares, reclassified to current assets (in shares)	2,000,000		2,000,000
Owned shares, reclassified to other long term assets (in shares)	500,000		500,000
Project entities
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	$ 122		$ 122		122
Other equity investments without readily determinable fair value
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	679		679		679
SunStrong Capital Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	8,374		8,374		7,645
SunStrong Partners, LLC
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	0		0		2,279
Total equity investment with fair value option
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	$ 8,374		$ 8,374		$ 9,924