<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:ffd="http://xbrl.sec.gov/ffd/2025q4"
  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/2025q4/ffd-2025q4.xsd"
      xlink:type="simple"/>
    <context id="rc">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
        </entity>
        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
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        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <context id="offrl_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
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        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <context id="offrl_3">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>3</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <context id="offrl_4">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>4</dei:lineNo>
                </xbrldi:typedMember>
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        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
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    <context id="offrl_5">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>5</dei:lineNo>
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        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
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    <context id="offrl_6">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>6</dei:lineNo>
                </xbrldi:typedMember>
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        </entity>
        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <context id="offrl_7">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000079879</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>7</dei:lineNo>
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        </entity>
        <period>
            <startDate>2026-02-23</startDate>
            <endDate>2026-02-23</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <ffd:FormTp contextRef="rc" id="ixv-466">S-3</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-467">S-3ASR</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-468">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-469">0000079879</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-470">PPG INDUSTRIES INC</dei:EntityRegistrantName>
    <ffd:OfferingTableNa contextRef="rc" id="hiddenrcOfferingTableNa" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="rc" id="hiddenrcOffsetTableNa">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="rc" id="hiddenrcCombinedProspectusTableNa">N/A</ffd:CombinedProspectusTableNa>
    <ffd:FormTp contextRef="rc" id="ixv-552">S-3</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-553">PPG INDUSTRIES INC</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="offrl_1" id="ixv-554">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-555">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-556">Debt Securities</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_1" id="ixv-557">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_1"
      decimals="7"
      id="ixv-558"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_2" id="ixv-559">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_2" id="ixv-560">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_2" id="ixv-561">Common Stock, par value $1.66 2/3 per share</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_2" id="ixv-562">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_2"
      decimals="7"
      id="ixv-563"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_3" id="ixv-564">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_3" id="ixv-565">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_3" id="ixv-566">Preferred Stock, without par value</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_3" id="ixv-567">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_3"
      decimals="7"
      id="ixv-568"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_4" id="ixv-569">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_4" id="ixv-570">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_4" id="ixv-571">Warrants</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_4" id="ixv-572">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_4"
      decimals="7"
      id="ixv-573"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_5" id="ixv-574">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_5" id="ixv-575">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_5" id="ixv-576">Depositary Shares</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_5" id="ixv-577">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_5"
      decimals="7"
      id="ixv-578"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_6" id="ixv-579">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_6" id="ixv-580">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_6" id="ixv-581">Purchase Contracts</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_6" id="ixv-582">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_6"
      decimals="7"
      id="ixv-583"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:PrevslyPdFlg contextRef="offrl_7" id="ixv-584">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="offrl_7" id="ixv-585">Other</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_7" id="ixv-586">Units</ffd:OfferingSctyTitl>
    <ffd:Rule457rFlg contextRef="offrl_7" id="ixv-587">true</ffd:Rule457rFlg>
    <ffd:FeeRate
      contextRef="offrl_7"
      decimals="7"
      id="ixv-588"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:TtlOfferingAmt contextRef="rc" decimals="2" id="ixv-589" unitRef="USD">0.00</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="rc" decimals="2" id="ixv-590" unitRef="USD">0.00</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="rc" decimals="2" id="ixv-591" unitRef="USD">0.00</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="rc" decimals="2" id="ixv-592" unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="rc" decimals="2" id="ixv-593" unitRef="USD">0.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="offrl_1" id="ixv-594">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_2" id="ixv-595">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_3" id="ixv-596">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_4" id="ixv-597">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_5" id="ixv-598">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_6" id="ixv-599">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="offrl_7" id="ixv-600">(1) There is being registered hereunder an indeterminate number or amount, as the case may be, of the securities of each identified class as may from time to time be offered and sold at indeterminate prices. Any securities registered hereunder may be sold separately or in combination with the other securities registered hereunder. The securities registered hereunder also include an indeterminate number or amount, as the case may be, of securities registered hereunder as may be issued upon conversion, redemption, exchange, exercise or settlement, as applicable of any other securities registered hereunder that provide for such conversion, redemption, exchange, exercise or settlement, including such securities as may be issued pursuant to anti-dilution adjustments pursuant to the anti-dilution provisions of any such securities or as a result of stock splits, stock dividends or similar transactions, pursuant to Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). (2) In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrants are deferring payment of the registration fee, which will be paid subsequently on a pay-as-you-go basis. The registrants will calculate the registration fee applicable to an offer of securities pursuant to this registration statement based on the fee payment rate in effect on the date of such fee payment.</ffd:OfferingNote>
</xbrl>
