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WARRANTY OBLIGATIONS - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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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

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- Definition Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (c)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482425/460-10-50-8 + Details
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