WARRANTY OBLIGATIONS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Product Warranty Liability [Line Items]
Changes in estimates	$ (10,363)	$ 17,063	$ (6,635)	$ 21,975
Minimum
Product Warranty Liability [Line Items]
Product warranty, term	10 years		10 years
Maximum
Product Warranty Liability [Line Items]
Product warranty, term	15 years		15 years
Product Replacement Costs Related To Enphase IQ Battery Systems
Product Warranty Liability [Line Items]
Changes in estimates	$ (14,400)		$ (20,500)
Product Replacement Costs Related To Other Products
Product Warranty Liability [Line Items]
Changes in estimates	(2,100)		(2,100)
Change In Warranty Period
Product Warranty Liability [Line Items]
Changes in estimates	$ 6,100		6,100
Field Performance Data And Diagnostic Root-Cause Failure Analysis
Product Warranty Liability [Line Items]
Changes in estimates		13,300	$ 9,900	13,300
Labor Reimbursement Rate
Product Warranty Liability [Line Items]
Changes in estimates		$ 3,800		3,800
Expedited Freight Costs And Replacement Costs
Product Warranty Liability [Line Items]
Changes in estimates				$ 4,900