WARRANTY OBLIGATIONS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)	$ (19,176)	$ 29,275	$ 19,414
Minimum \| IQ Battery
Product Warranty Liability [Line Items]
Product warranty, term	10 years
Maximum \| IQ Battery
Product Warranty Liability [Line Items]
Product warranty, term	15 years
Product Replacement Costs Related To Enphase IQ Battery Systems
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)	$ (27,300)
Product Replacement Costs Related To Other Products
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)	(8,800)
Change In Warranty Period
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)	8,300
Field Performance Data And Diagnostic Root-Cause Failure Analysis
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)	$ 8,600	18,300	11,600
Expedited Freight Costs And Replacement Costs
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)		7,000
Increased Labor Reimbursement Costs
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)		$ 4,000
Timing Related To Cost Reduction Assumptions For Replacement Products
Product Warranty Liability [Line Items]
Additional warranty expense (benefit)			$ 7,800