<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>270</ContextCount>
  <ElementCount>325</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>128</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Consolidated Balance Sheets (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_StatementConsolidatedBalanceSheetsUnaudited</Role>
      <ShortName>Consolidated Balance Sheets (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Consolidated Balance Sheets (Parenthetical) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_StatementConsolidatedBalanceSheetsParentheticalUnaudited</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_StatementConsolidatedStatementsOfOperationsUnaudited</Role>
      <ShortName>Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - Consolidated Statements of Comprehensive Income (Loss) (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeLossUnaudited</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss) (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - Consolidated Statements of Cash Flows (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlowsUnaudited</Role>
      <ShortName>Consolidated Statements of Cash Flows (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - Consolidated Statements of Cash Flows (Parenthetical) (unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/StatementConsolidatedStatementsOfCashFlowsParentheticalUnaudited</Role>
      <ShortName>Consolidated Statements of Cash Flows (Parenthetical) (unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Organization and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureOrganizationAndBasisOfPresentation</Role>
      <ShortName>Organization and Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Real Estate and Intangibles</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangibles</Role>
      <ShortName>Real Estate and Intangibles</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Investments in Unconsolidated Real Estate Venture</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureInvestmentsInUnconsolidatedRealEstateVenture</Role>
      <ShortName>Investments in Unconsolidated Real Estate Venture</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Real Estate Loans Receivable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivable</Role>
      <ShortName>Real Estate Loans Receivable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Derivatives and Hedging Activities</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivities</Role>
      <ShortName>Derivatives and Hedging Activities</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureFairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Equity Incentive Pan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityIncentivePan</Role>
      <ShortName>Equity Incentive Pan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquity</Role>
      <ShortName>Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995555 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995575 - Disclosure - Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRevenue</Role>
      <ShortName>Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Concentrations Risk</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureConcentrationsRisk</Role>
      <ShortName>Concentrations Risk</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureSegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRelatedParties</Role>
      <ShortName>Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995615 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureSummaryOfSignificantAccountingPolicies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995635 - Disclosure - Real Estate and Intangibles (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangiblesTables</Role>
      <ShortName>Real Estate and Intangibles (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangibles</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Investments in Unconsolidated Real Estate Venture (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureInvestmentsInUnconsolidatedRealEstateVentureTables</Role>
      <ShortName>Investments in Unconsolidated Real Estate Venture (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureInvestmentsInUnconsolidatedRealEstateVenture</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Real Estate Loans Receivable (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivableTables</Role>
      <ShortName>Real Estate Loans Receivable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivable</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebt</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Derivatives and Hedging Activities (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivitiesTables</Role>
      <ShortName>Derivatives and Hedging Activities (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDerivativesAndHedgingActivities</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureFairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureFairValueMeasurements</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Equity Incentive Plan (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureEquityIncentivePlanTables</Role>
      <ShortName>Equity Incentive Plan (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityIncentivePan</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityTables</Role>
      <ShortName>Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityIncentivePan</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEarningsPerShare</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995725 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeases</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995735 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRevenue</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Organization and Basis of Presentation - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureOrganizationAndBasisOfPresentationAdditionalInformationDetail</Role>
      <ShortName>Organization and Basis of Presentation - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Real Estate and Intangibles - Fair Values of Assets Acquired and Liabilities Assumed (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateAndIntangiblesFairValuesOfAssetsAcquiredAndLiabilitiesAssumedDetails</Role>
      <ShortName>Real Estate and Intangibles - Fair Values of Assets Acquired and Liabilities Assumed (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Real Estate and Intangibles - Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateAndIntangiblesFairValuesOfAssetsAcquiredAndLiabilitiesAssumedParentheticalDetails</Role>
      <ShortName>Real Estate and Intangibles - Fair Values of Assets Acquired and Liabilities Assumed (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995775 - Disclosure - Real Estate and Intangibles - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangiblesAdditionalInformationDetail</Role>
      <ShortName>Real Estate and Intangibles - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Real Estate and Intangibles - Schedule of Real Estate and Intangibles (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangiblesScheduleOfRealEstateAndIntangiblesDetail</Role>
      <ShortName>Real Estate and Intangibles - Schedule of Real Estate and Intangibles (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Real Estate and Intangibles - Summary of Scheduled Amortization Market Lease Intangibles (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRealEstateAndIntangiblesSummaryOfScheduledAmortizationMarketLeaseIntangiblesDetail</Role>
      <ShortName>Real Estate and Intangibles - Summary of Scheduled Amortization Market Lease Intangibles (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995805 - Disclosure - Investments in Unconsolidated Real Estate Venture - Summary of Investments in JV (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureInvestmentsInUnconsolidatedRealEstateVentureSummaryOfInvestmentsInJVDetail</Role>
      <ShortName>Investments in Unconsolidated Real Estate Venture - Summary of Investments in JV (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Investments in Unconsolidated Real Estate Venture - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureInvestmentsInUnconsolidatedRealEstateVentureAdditionalInformationDetails</Role>
      <ShortName>Investments in Unconsolidated Real Estate Venture - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995825 - Disclosure - Real Estate Loans Receivable - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivableAdditionalInformationDetail</Role>
      <ShortName>Real Estate Loans Receivable - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Real Estate Loans Receivable - Summary of Real Estate Loans Receivable (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivableSummaryOfRealEstateLoansReceivableDetail</Role>
      <ShortName>Real Estate Loans Receivable - Summary of Real Estate Loans Receivable (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Real Estate Loans Receivable - Summary of Allowance for Credit Losses (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivableSummaryOfAllowanceForCreditLossesDetail</Role>
      <ShortName>Real Estate Loans Receivable - Summary of Allowance for Credit Losses (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Real Estate Loans Receivable - Summary of Allowance for Credit Losses (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureRealEstateLoansReceivableSummaryOfAllowanceForCreditLossesParentheticalDetail</Role>
      <ShortName>Real Estate Loans Receivable - Summary of Allowance for Credit Losses (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995865 - Disclosure - Debt - Summary of Borrowings (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebtSummaryOfBorrowingsDetail</Role>
      <ShortName>Debt - Summary of Borrowings (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Debt - Summary of Borrowings (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebtSummaryOfBorrowingsParentheticalDetail</Role>
      <ShortName>Debt - Summary of Borrowings (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995885 - Disclosure - Debt - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureDebtAdditionalInformationDetail</Role>
      <ShortName>Debt - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995895 - Disclosure - Derivatives and Hedging Activities - Schedule of Key Terms and Fair Values of Our Interest Rate Swap Derivatives (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureDerivativesAndHedgingActivitiesScheduleOfKeyTermsAndFairValuesOfOurInterestRateSwapDerivativesDetail</Role>
      <ShortName>Derivatives and Hedging Activities - Schedule of Key Terms and Fair Values of Our Interest Rate Swap Derivatives (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Derivatives and Hedging Activities - Schedule of Fair Value of Our Interest Rate Derivatives as Well as Their Classification on Our Consolidated Balance Sheets (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureDerivativesAndHedgingActivitiesScheduleOfFairValueOfOurInterestRateDerivativesAsWellAsTheirClassificationOnOurConsolidatedBala</Role>
      <ShortName>Derivatives and Hedging Activities - Schedule of Fair Value of Our Interest Rate Derivatives as Well as Their Classification on Our Consolidated Balance Sheets (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995915 - Disclosure - Derivatives and Hedging Activities - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureDerivativesAndHedgingActivitiesAdditionalInformationDetail</Role>
      <ShortName>Derivatives and Hedging Activities - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Derivatives and Hedging Activities - Schedule of Effects of Our Interest Rate Derivatives on Our Consolidated Statements of Operations and Comprehensive Income (Loss) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureDerivativesAndHedgingActivitiesScheduleOfEffectsOfOurInterestRateDerivativesOnOurConsolidatedStatementsOfOperationsAndComprehens</Role>
      <ShortName>Derivatives and Hedging Activities - Schedule of Effects of Our Interest Rate Derivatives on Our Consolidated Statements of Operations and Comprehensive Income (Loss) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Fair Value Measurements - Schedule of Assets Measured at Fair Value on Recurring Basis (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAssetsMeasuredAtFairValueOnRecurringBasisDetail</Role>
      <ShortName>Fair Value Measurements - Schedule of Assets Measured at Fair Value on Recurring Basis (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Fair Value Measurements - Schedule of aggregate principal outstanding under the Company's indebtedness and the corresponding estimate of fair value (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAggregatePrincipalOutstandingUnderTheCompanysIndebtednessAndTheCorrespondingEstimateOfFairValueDe</Role>
      <ShortName>Fair Value Measurements - Schedule of aggregate principal outstanding under the Company's indebtedness and the corresponding estimate of fair value (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Equity Incentive Plan - Summary of Stock-based Compensation Expense, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureEquityIncentivePlanSummaryOfStockbasedCompensationExpenseNetDetails</Role>
      <ShortName>Equity Incentive Plan - Summary of Stock-based Compensation Expense, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995975 - Disclosure - Equity Incentive Plan - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityIncentivePlanAdditionalInformationDetails</Role>
      <ShortName>Equity Incentive Plan - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Equity - Summary of Changes In Stockholders' Equity (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquitySummaryOfChangesInStockholdersEquityDetail</Role>
      <ShortName>Equity - Summary of Changes In Stockholders' Equity (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>995995 - Disclosure - Equity - Summary of Changes In Stockholders' Equity (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquitySummaryOfChangesInStockholdersEquityParentheticalDetail</Role>
      <ShortName>Equity - Summary of Changes In Stockholders' Equity (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Equity - Summary of Dividends Declared (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureEquitySummaryOfDividendsDeclaredDetail</Role>
      <ShortName>Equity - Summary of Dividends Declared (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Equity - Summary of Dividends Declared (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquitySummaryOfDividendsDeclaredParentheticalDetail</Role>
      <ShortName>Equity - Summary of Dividends Declared (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>996025 - Disclosure - Equity - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEquityAdditionalInformationDetail</Role>
      <ShortName>Equity - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>996035 - Disclosure - Equity - Schedule of Information with Respect to 2019 ATM Program (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureEquityScheduleOfInformationWithRespectTo2019AtmProgramDetail</Role>
      <ShortName>Equity - Schedule of Information with Respect to 2019 ATM Program (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996045 - Disclosure - Earnings Per Share - Summary of Basic and Diluted Earnings Per Common Share (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEarningsPerShareSummaryOfBasicAndDilutedEarningsPerCommonShareDetail</Role>
      <ShortName>Earnings Per Share - Summary of Basic and Diluted Earnings Per Common Share (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996055 - Disclosure - Earnings Per Share - Summary of Basic and Diluted Earnings Per Common Share (Parenthetical) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureEarningsPerShareSummaryOfBasicAndDilutedEarningsPerCommonShareParentheticalDetail</Role>
      <ShortName>Earnings Per Share - Summary of Basic and Diluted Earnings Per Common Share (Parenthetical) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996065 - Disclosure - Leases - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetail</Role>
      <ShortName>Leases - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996085 - Disclosure - Leases - Summary of Composition of Lease Revenue Recognized Between Fixed and Variable Components (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeasesSummaryOfCompositionOfLeaseRevenueRecognizedBetweenFixedAndVariableComponentsDetail</Role>
      <ShortName>Leases - Summary of Composition of Lease Revenue Recognized Between Fixed and Variable Components (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996095 - Disclosure - Leases - Schedule of Quantitative Information for Company's Operating Leases (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeasesScheduleOfQuantitativeInformationForCompanySOperatingLeasesDetail</Role>
      <ShortName>Leases - Schedule of Quantitative Information for Company's Operating Leases (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996105 - Disclosure - Leases - Schedule of Maturity of Fixed Lease Payments Under Company's Corporate Office Leases (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureLeasesScheduleOfMaturityOfFixedLeasePaymentsUnderCompanySCorporateOfficeLeasesDetail</Role>
      <ShortName>Leases - Schedule of Maturity of Fixed Lease Payments Under Company's Corporate Office Leases (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996125 - Disclosure - Revenue - Summary of Revenue from Tenant Construction Projects Disaggregated by Tenant Agency (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRevenueSummaryOfRevenueFromTenantConstructionProjectsDisaggregatedByTenantAgencyDetail</Role>
      <ShortName>Revenue - Summary of Revenue from Tenant Construction Projects Disaggregated by Tenant Agency (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996135 - Disclosure - Revenue - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRevenueAdditionalInformationDetail</Role>
      <ShortName>Revenue - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>996145 - Disclosure - Concentrations Risk - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureConcentrationsRiskAdditionalInformationDetail</Role>
      <ShortName>Concentrations Risk - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>996155 - Disclosure - Segment Information - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureSegmentInformationAdditionalInformationDetail</Role>
      <ShortName>Segment Information - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>996165 - Disclosure - Related Parties - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/Role_DisclosureRelatedPartiesAdditionalInformationDetail</Role>
      <ShortName>Related Parties - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="dea-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>996175 - Disclosure - Subsequent Events - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://easterlyreit.com/20260331/taxonomy/role/DisclosureSubsequentEventsAdditionalInformationDetail</Role>
      <ShortName>Subsequent Events - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="dea-20260331.htm">dea-20260331.htm</File>
    <File>dea-20260331.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="2">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="606">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="30">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>