<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2026"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
      xlink:type="simple"/>
    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001130310</identifier>
        </entity>
        <period>
            <startDate>2026-05-15</startDate>
            <endDate>2026-05-15</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001130310</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-15</startDate>
            <endDate>2026-05-15</endDate>
        </period>
    </context>
    <context id="ofst_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001130310</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OffsetAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-15</startDate>
            <endDate>2026-05-15</endDate>
        </period>
    </context>
    <context id="ofst_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001130310</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OffsetAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-05-15</startDate>
            <endDate>2026-05-15</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-383">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-384">424B5</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-385">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:RegnFileNb contextRef="rc" id="ixv-386">333-295924</ffd:RegnFileNb>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-387">0001130310</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-388">CENTERPOINT ENERGY INC</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa" xsi:nil="true"/>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:OffsetClmdInd contextRef="ofst_1" id="ixv-392">true</ffd:OffsetClmdInd>
    <ffd:OffsetClmdInd contextRef="ofst_2" id="ixv-393">false</ffd:OffsetClmdInd>
    <ffd:FormTp contextRef="rc" id="ixv-436">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-437">CENTERPOINT ENERGY INC</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-438">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-439">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-440">Common Stock, par value $0.01 per share</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="offrl_1" id="ixv-441">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric
      contextRef="offrl_1"
      decimals="2"
      id="ixv-442"
      unitRef="USD">1000000000.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="offrl_1"
      decimals="7"
      id="ixv-443"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="offrl_1"
      decimals="2"
      id="ixv-444"
      unitRef="USD">138100.00</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-445" unitRef="USD">1000000000.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-446" unitRef="USD">138100.00</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-447" unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-448" unitRef="USD">12529.75</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-449" unitRef="USD">125570.25</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-450">This registration fee table shall be deemed to update the "Calculation of Registration Fee" in CenterPoint Energy, Inc.'s Registration Statement on Form S-3ASR (File No. 333-295924) (the "Current Registration Statement") in accordance with Rules 456(b) and 457(r) under the Securities Act of 1933, as amended (the "Securities Act").
</ffd:OfferingNote>
    <ffd:Rule457pOffsetFlg contextRef="ofst_1" id="ixv-451">true</ffd:Rule457pOffsetFlg>
    <ffd:OffsetPrrFilerNm contextRef="ofst_1" id="ixv-452">CenterPoint Energy, Inc.</ffd:OffsetPrrFilerNm>
    <ffd:OffsetPrrFormTp contextRef="ofst_1" id="ixv-453">S-3</ffd:OffsetPrrFormTp>
    <ffd:OffsetPrrFileNb contextRef="ofst_1" id="ixv-454">333-272025</ffd:OffsetPrrFileNb>
    <ffd:OffsetClmInitlFilgDt contextRef="ofst_1" id="ixv-455">2024-01-11</ffd:OffsetClmInitlFilgDt>
    <ffd:OffsetClmdAmt contextRef="ofst_1" decimals="2" id="ixv-456" unitRef="USD">12529.75</ffd:OffsetClmdAmt>
    <ffd:OffsetPrrSctyTp contextRef="ofst_1" id="ixv-457">Equity</ffd:OffsetPrrSctyTp>
    <ffd:OffsetPrrSctyTitl contextRef="ofst_1" id="ixv-458">Common Stock, par value $0.01 per share</ffd:OffsetPrrSctyTitl>
    <ffd:OffsetPrrUnsoldOfferingAmt contextRef="ofst_1" decimals="2" id="ixv-459" unitRef="USD">84889912.32</ffd:OffsetPrrUnsoldOfferingAmt>
    <ffd:Rule457pOffsetFlg contextRef="ofst_2" id="ixv-460">true</ffd:Rule457pOffsetFlg>
    <ffd:OffsetPrrFilerNm contextRef="ofst_2" id="ixv-461">CenterPoint Energy, Inc</ffd:OffsetPrrFilerNm>
    <ffd:OffsetPrrFormTp contextRef="ofst_2" id="ixv-462">S-3</ffd:OffsetPrrFormTp>
    <ffd:OffsetPrrFileNb contextRef="ofst_2" id="ixv-463">333-272025</ffd:OffsetPrrFileNb>
    <ffd:OffsetSrcFilgDt contextRef="ofst_2" id="ixv-464">2024-01-11</ffd:OffsetSrcFilgDt>
    <ffd:OffsetPrrFeeAmt contextRef="ofst_2" decimals="2" id="ixv-465" unitRef="USD">73800.00</ffd:OffsetPrrFeeAmt>
    <ffd:TermntnCmpltnWdrwl contextRef="ofst_1" id="ixv-466">CenterPoint Energy, Inc. (the "Company") is registering shares of common stock having a proposed maximum aggregate offering price of up to $1,000,000,000 pursuant to the prospectus supplement to which this Exhibit 107 relates (the "Current Prospectus Supplement"). The Company has previously registered shares of common stock having an aggregate offering price of up to $500,000,000, offered by means of a prospectus supplement dated January 11, 2024 (the "Prior Prospectus Supplement") and an accompanying prospectus dated May 17, 2023 pursuant to the Company's registration statement on Form S-3ASR (File No. 333-272025) filed with the Securities and Exchange Commission on May 17, 2023 (the "Prior Registration Statement"). In connection with the filing of the Prior Prospectus Supplement, the Company made a contemporaneous fee payment in the amount of $73,800.00, reflecting the fee due with respect to shares of common stock to be offered and sold pursuant to the Prior Prospectus Supplement. The Prior Registration Statement terminated effective upon the filing of the Current Registration Statement. Shares of common stock having a proposed maximum offering price of $84,889,912.32 that are being registered pursuant to the Current Prospectus Supplement represent unsold securities previously registered pursuant to the Prior Prospectus Supplement. Pursuant to Rule 457(p) under the Securities Act, $12,529.75 of the registration fee that was paid with respect to securities that were previously registered pursuant to the Prior Prospectus Supplement and were not sold thereunder is offset against the registration fee of $138,100.00 due for this offering. The remaining balance of the registration fee, $125,570.25, has been paid in connection with the filing of the Current Prospectus Supplement. The Company has terminated the offering that included the unsold securities under the Prior Prospectus Supplement.</ffd:TermntnCmpltnWdrwl>
    <ffd:OffsetNote contextRef="ofst_2" id="ixv-467">CenterPoint Energy, Inc. (the "Company") is registering shares of common stock having a proposed maximum aggregate offering price of up to $1,000,000,000 pursuant to the prospectus supplement to which this Exhibit 107 relates (the "Current Prospectus Supplement"). The Company has previously registered shares of common stock having an aggregate offering price of up to $500,000,000, offered by means of a prospectus supplement dated January 11, 2024 (the "Prior Prospectus Supplement") and an accompanying prospectus dated May 17, 2023 pursuant to the Company's registration statement on Form S-3ASR (File No. 333-272025) filed with the Securities and Exchange Commission on May 17, 2023 (the "Prior Registration Statement"). In connection with the filing of the Prior Prospectus Supplement, the Company made a contemporaneous fee payment in the amount of $73,800.00, reflecting the fee due with respect to shares of common stock to be offered and sold pursuant to the Prior Prospectus Supplement. The Prior Registration Statement terminated effective upon the filing of the Current Registration Statement. Shares of common stock having a proposed maximum offering price of $84,889,912.32 that are being registered pursuant to the Current Prospectus Supplement represent unsold securities previously registered pursuant to the Prior Prospectus Supplement. Pursuant to Rule 457(p) under the Securities Act, $12,529.75 of the registration fee that was paid with respect to securities that were previously registered pursuant to the Prior Prospectus Supplement and were not sold thereunder is offset against the registration fee of $138,100.00 due for this offering. The remaining balance of the registration fee, $125,570.25, has been paid in connection with the filing of the Current Prospectus Supplement. The Company has terminated the offering that included the unsold securities under the Prior Prospectus Supplement.</ffd:OffsetNote>
    <ffd:NrrtvMaxAggtOfferingPric contextRef="rc" decimals="2" id="ixv-468" unitRef="USD">1000000000.00</ffd:NrrtvMaxAggtOfferingPric>
    <ffd:FnlPrspctsFlg contextRef="rc" id="ixv-469">true</ffd:FnlPrspctsFlg>
</xbrl>
