<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.10.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>409</ContextCount>
  <ElementCount>447</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>116</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-daei</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>00000002 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-cbs</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>00000003 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-cbsp</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>00000004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-csooacil</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>00000005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/ConsolidatedStatementsOfComprehensiveIncome</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>00000006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-csocisd</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>00000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/ConsolidatedStatementsOfCashFlows</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>00000008 - Disclosure - GENERAL</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-g</Role>
      <ShortName>GENERAL</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>00000009 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sap</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>00000010 - Disclosure - MARKETABLE SECURITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/MarketableSecurities</Role>
      <ShortName>MARKETABLE SECURITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>00000011 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/FairValueMeasurements</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>00000012 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT ASSETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-peaoar</Role>
      <ShortName>PREPAID EXPENSES AND OTHER CURRENT ASSETS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>00000013 - Disclosure - INVENTORIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-i</Role>
      <ShortName>INVENTORIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>00000014 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-pae</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>00000015 - Disclosure - BUSINESS COMBINATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BusinessCombination</Role>
      <ShortName>BUSINESS COMBINATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>00000016 - Disclosure - INTANGIBLE ASSETS AND GOODWILL</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwill</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>00000017 - Disclosure - ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-aeaoap</Role>
      <ShortName>ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>00000018 - Disclosure - BANK LOANS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BankLoans</Role>
      <ShortName>BANK LOANS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>00000019 - Disclosure - WARRANTY OBLIGATIONS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-wo</Role>
      <ShortName>WARRANTY OBLIGATIONS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>00000020 - Disclosure - OTHER NON-CURRENT LIABILTIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/OtherNon-currentLiabilties</Role>
      <ShortName>OTHER NON-CURRENT LIABILTIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>00000021 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/AccumulatedOtherComprehensiveLoss</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>00000022 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-cacl</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>00000023 - Disclosure - STOCK CAPITAL</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sc</Role>
      <ShortName>STOCK CAPITAL</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>00000024 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-it1</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>00000025 - Disclosure - FINANCIAL EXPENSES (INCOME), NET</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-fein</Role>
      <ShortName>FINANCIAL EXPENSES (INCOME), NET</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>00000026 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-giamcapd</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>00000027 - Disclosure - SUBSEQUENT EVENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SubsequentEvents</Role>
      <ShortName>SUBSEQUENT EVENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>00000028 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapp</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>00000029 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapt</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sap</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>00000030 - Disclosure - MARKETABLE SECURITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/MarketableSecuritiesTables</Role>
      <ShortName>MARKETABLE SECURITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/MarketableSecurities</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>00000031 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/FairValueMeasurementsTables</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/FairValueMeasurements</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>00000032 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-peaoart</Role>
      <ShortName>PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-peaoar</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>00000033 - Disclosure - INVENTORIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-it</Role>
      <ShortName>INVENTORIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-i</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>00000034 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-paet</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-pae</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>00000035 - Disclosure - BUSINESS COMBINATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BusinessCombinationTables</Role>
      <ShortName>BUSINESS COMBINATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/BusinessCombination</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>00000036 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwillTables</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/IntangibleAssetsAndGoodwill</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>00000037 - Disclosure - ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-aeaoapt</Role>
      <ShortName>ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-aeaoap</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>00000038 - Disclosure - BANK LOANS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BankLoansTables</Role>
      <ShortName>BANK LOANS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/BankLoans</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>00000039 - Disclosure - WARRANTY OBLIGATIONS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-wot</Role>
      <ShortName>WARRANTY OBLIGATIONS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-wo</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>00000040 - Disclosure - OTHER NON-CURRENT LIABILTIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/OtherNon-currentLiabiltiesTables</Role>
      <ShortName>OTHER NON-CURRENT LIABILTIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/OtherNon-currentLiabilties</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>00000041 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/AccumulatedOtherComprehensiveLossTables</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/AccumulatedOtherComprehensiveLoss</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>00000042 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-caclt</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-cacl</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>00000044 - Disclosure - STOCK CAPITAL (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sct</Role>
      <ShortName>STOCK CAPITAL (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sc</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>00000045 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-itt</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-it1</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>00000046 - Disclosure - FINANCIAL EXPENSES (INCOME), NET (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-feint</Role>
      <ShortName>FINANCIAL EXPENSES (INCOME), NET (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-fein</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>00000047 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-giamcapdt</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapd</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>00000048 - Disclosure - GENERAL (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-gd</Role>
      <ShortName>GENERAL (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-g</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>00000049 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapnd</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>00000050 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Net Earnings (Loss) Per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapd</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Net Earnings (Loss) Per Share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>00000051 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Estimated Useful Lives of Property and Equipment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapeulopaed</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Estimated Useful Lives of Property and Equipment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>00000052 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Schedule of Disaggregated by Revenue) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SignificantAccountingPoliciesScheduleOfDisaggregatedByRevenueDetails</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Schedule of Disaggregated by Revenue) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>00000053 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Schedule of Balance Sheets Following the Adoption of ASC 606, Revenue) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SignificantAccountingPoliciesScheduleOfBalanceSheetsFollowingAdoptionOfAsc606RevenueDetails</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Schedule of Balance Sheets Following the Adoption of ASC 606, Revenue) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>00000054 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Impact of statements of income, cash flows, and balance sheets after ASC 606) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SignificantAccountingPoliciesImpactOfStatementsOfIncomeCashFlowsAndBalanceSheetsAfterAsc606Details</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Impact of statements of income, cash flows, and balance sheets after ASC 606) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>00000055 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Concentrations of Credit risks) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapcocrd</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Concentrations of Credit risks) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>00000056 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Estimate Fair Value of Stock Options and Warrants) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sapefvosoawd</Role>
      <ShortName>SIGNIFICANT ACCOUNTING POLICIES (Estimate Fair Value of Stock Options and Warrants) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sapt</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>00000057 - Disclosure - MARKETABLE SECURITIES (Schedule of Available-For-Sale Securities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/MarketableSecuritiesScheduleOfAvailable-for-saleSecuritiesDetails</Role>
      <ShortName>MARKETABLE SECURITIES (Schedule of Available-For-Sale Securities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/MarketableSecuritiesTables</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>00000058 - Disclosure - MARKETABLE SECURITIES (Schedule of Contractual Maturities) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/MarketableSecuritiesScheduleOfContractualMaturitiesDetails</Role>
      <ShortName>MARKETABLE SECURITIES (Schedule of Contractual Maturities) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/MarketableSecuritiesTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>00000059 - Disclosure - FAIR VALUE MEASUREMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/FairValueMeasurementsDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/FairValueMeasurementsTables</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>00000060 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-peaoard</Role>
      <ShortName>PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-peaoart</ParentRole>
      <Position>59</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>00000061 - Disclosure - INVENTORIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-id</Role>
      <ShortName>INVENTORIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-it</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>00000062 - Disclosure - PROPERTY, PLANT AND EQUIPMENT, NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-paed</Role>
      <ShortName>PROPERTY, PLANT AND EQUIPMENT, NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-paet</ParentRole>
      <Position>61</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>00000063 - Disclosure - BUSINESS COMBINATION (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BusinessCombinationNarrativeDetails</Role>
      <ShortName>BUSINESS COMBINATION (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/BusinessCombinationTables</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>00000064 - Disclosure - BUSINESS COMBINATION (Schedule of Preliminary Estimated Components and Allocations of Combined Purchase Prices) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BusinessCombinationScheduleOfPreliminaryEstimatedComponentsAndAllocationsOfCombinedPurchasePricesDetails</Role>
      <ShortName>BUSINESS COMBINATION (Schedule of Preliminary Estimated Components and Allocations of Combined Purchase Prices) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/BusinessCombinationTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>00000065 - Disclosure - BUSINESS COMBINATION (Schedule of Pro-forma Consolidated Income Statements) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BusinessCombinationScheduleOfPro-formaConsolidatedIncomeStatementsDetails</Role>
      <ShortName>BUSINESS COMBINATION (Schedule of Pro-forma Consolidated Income Statements) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/BusinessCombinationTables</ParentRole>
      <Position>64</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>00000066 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwillNarrativeDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/IntangibleAssetsAndGoodwillTables</ParentRole>
      <Position>65</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>00000067 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Schedule of Acquired Intangible Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwillScheduleOfAcquiredIntangibleAssetsDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Schedule of Acquired Intangible Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/IntangibleAssetsAndGoodwillTables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>00000068 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Schedule of Future Amortization Expense) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwillScheduleOfFutureAmortizationExpenseDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Schedule of Future Amortization Expense) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/IntangibleAssetsAndGoodwillTables</ParentRole>
      <Position>67</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>00000069 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Schedule of Goodwill Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IntangibleAssetsAndGoodwillScheduleOfGoodwillActivityDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Schedule of Goodwill Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/IntangibleAssetsAndGoodwillTables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>00000070 - Disclosure - ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-aeaoapd</Role>
      <ShortName>ACCRUED EXPENSES AND OTHER ACCOUNTS PAYABLE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-aeaoapt</ParentRole>
      <Position>69</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>00000071 - Disclosure - BANK LOANS (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BankLoansNarrativeDetails</Role>
      <ShortName>BANK LOANS (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/BankLoansTables</ParentRole>
      <Position>70</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>00000072 - Disclosure - BANK LOANS (Schedule of Long Term Bank Loan) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/BankLoansScheduleOfLongTermBankLoanDetails</Role>
      <ShortName>BANK LOANS (Schedule of Long Term Bank Loan) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/BankLoansTables</ParentRole>
      <Position>71</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>00000073 - Disclosure - WARRANTY OBLIGATIONS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedgwod</Role>
      <ShortName>WARRANTY OBLIGATIONS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-wot</ParentRole>
      <Position>72</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>00000074 - Disclosure - OTHER NON-CURRENT LIABILTIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/OtherNon-currentLiabiltiesDetails</Role>
      <ShortName>OTHER NON-CURRENT LIABILTIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/OtherNon-currentLiabiltiesTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>00000075 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Schedule of Changes in AOCI) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/AccumulatedOtherComprehensiveLossScheduleOfChangesInAociDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Schedule of Changes in AOCI) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/AccumulatedOtherComprehensiveLossTables</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>00000076 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Schedule of Reclassifications out of AOCI) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/AccumulatedOtherComprehensiveLossScheduleOfReclassificationsOutOfAociDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Schedule of Reclassifications out of AOCI) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/AccumulatedOtherComprehensiveLossTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>00000077 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Schedule of Future Minimum Lease Commitments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-caclsofmlcd</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES (Schedule of Future Minimum Lease Commitments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-caclt</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>00000078 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Lease Commitments) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-caclnlcgrcgccpoda</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Lease Commitments) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-caclt</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>00000079 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Guarantees) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-caclnlcgrcgccpodb</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Guarantees) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-caclt</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>00000080 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Contractual Obligations) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-caclnlcgrcgccpodc</Role>
      <ShortName>COMMITMENTS AND CONTINGENT LIABILITIES (Narrative) (Contractual Obligations) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-caclt</ParentRole>
      <Position>79</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>00000083 - Disclosure - STOCK CAPITAL (Common Stock) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-sccsd</Role>
      <ShortName>STOCK CAPITAL (Common Stock) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>80</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>00000084 - Disclosure - STOCK CAPITAL (Stock option plans) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-scsopd</Role>
      <ShortName>STOCK CAPITAL (Stock option plans) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>81</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>00000085 - Disclosure - STOCK CAPITAL (Summary of the activity in the share options) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-scsotaitsod</Role>
      <ShortName>STOCK CAPITAL (Summary of the activity in the share options) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>82</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>00000086 - Disclosure - STOCK CAPITAL (Schedule of exercise price ranges) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-scsoeprd</Role>
      <ShortName>STOCK CAPITAL (Schedule of exercise price ranges) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>00000087 - Disclosure - STOCK CAPITAL (Schedule of RSU Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/StockCapitalScheduleOfRsuActivityDetails</Role>
      <ShortName>STOCK CAPITAL (Schedule of RSU Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>00000088 - Disclosure - STOCK CAPITAL (Options issued to non-employee consultants) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-scoitnecd</Role>
      <ShortName>STOCK CAPITAL (Options issued to non-employee consultants) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>85</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>00000089 - Disclosure - STOCK CAPITAL (Schedule of stock-based compensation expense for employees and non-employee consultants) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-scsosbcefeacd</Role>
      <ShortName>STOCK CAPITAL (Schedule of stock-based compensation expense for employees and non-employee consultants) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-sct</ParentRole>
      <Position>86</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>00000090 - Disclosure - INCOME TAXES (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IncomeTaxesNarrativeDetails</Role>
      <ShortName>INCOME TAXES (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>87</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>00000091 - Disclosure - INCOME TAXES (Schedule of Deferred Tax Liabilities And Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-itsodtlaad</Role>
      <ShortName>INCOME TAXES (Schedule of Deferred Tax Liabilities And Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>88</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>00000092 - Disclosure - INCOME TAXES (Schedule of Uncertain Tax Positions) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/IncomeTaxesScheduleOfUncertainTaxPositionsDetails</Role>
      <ShortName>INCOME TAXES (Schedule of Uncertain Tax Positions) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>89</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>00000093 - Disclosure - INCOME TAXES (Schedule of Income (Loss) Before Taxes) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-itsoilbtd</Role>
      <ShortName>INCOME TAXES (Schedule of Income (Loss) Before Taxes) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>90</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>00000094 - Disclosure - INCOME TAXES (Schedule of Taxes on Income) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-itsotoid</Role>
      <ShortName>INCOME TAXES (Schedule of Taxes on Income) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>91</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>00000095 - Disclosure - INCOME TAXES (Schedule of reconciliation between the theoretical tax expense and the actual tax expense (benefit)) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-itsorbttteatatebd</Role>
      <ShortName>INCOME TAXES (Schedule of reconciliation between the theoretical tax expense and the actual tax expense (benefit)) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-itt</ParentRole>
      <Position>92</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>00000096 - Disclosure - FINANCIAL EXPENSES (INCOME), NET (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/FinancialExpensesIncomeNetDetails</Role>
      <ShortName>FINANCIAL EXPENSES (INCOME), NET (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-feint</ParentRole>
      <Position>93</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>00000097 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Segment Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SegmentGeographicMajorCustomerAndProductInformationScheduleOfSegmentAssetsDetails</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Segment Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapdt</ParentRole>
      <Position>94</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>00000098 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Summary of Revenues Within Geographic Areas) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SegmentGeographicMajorCustomerAndProductInformationSummaryOfRevenuesWithinGeographicAreasDetails</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Summary of Revenues Within Geographic Areas) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapdt</ParentRole>
      <Position>95</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>00000099 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Major Customers Data of Revenue) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-giamcapdsomcdaapotrd</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Major Customers Data of Revenue) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapdt</ParentRole>
      <Position>96</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>00000100 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Summary of Revenues by Product Family) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-giamcapdsorbpfd</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Summary of Revenues by Product Family) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapdt</ParentRole>
      <Position>97</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>00000101 - Disclosure - SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Long-Lived Assets) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/sedg-giamcapdsollabgrd</Role>
      <ShortName>SEGMENT, GEOGRAPHIC, MAJOR CUSTOMER AND PRODUCT INFORMATION (Schedule of Long-Lived Assets) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/sedg-giamcapdt</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="sedg-20181231.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>00000102 - Disclosure - SUBSEQUENT EVENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://solaredge.com/role/SubsequentEventsDetails</Role>
      <ShortName>SUBSEQUENT EVENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://solaredge.com/role/SubsequentEvents</ParentRole>
      <Position>99</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>sedg-20181231.xml</File>
    <File>sedg-20181231.xsd</File>
    <File>sedg-20181231_cal.xml</File>
    <File>sedg-20181231_def.xml</File>
    <File>sedg-20181231_lab.xml</File>
    <File>sedg-20181231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/srt/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2018-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/country/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/currency/2017-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2018-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
