<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
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            <identifier scheme="http://www.sec.gov/CIK">0001287032</identifier>
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        <period>
            <startDate>2026-04-06</startDate>
            <endDate>2026-04-06</endDate>
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    <context id="c-6">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001287032</identifier>
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        <period>
            <startDate>2026-04-06</startDate>
            <endDate>2026-04-06</endDate>
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    <context id="c-7">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001287032</identifier>
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                <xbrldi:typedMember dimension="ffd:OfferingAxis">
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        <period>
            <startDate>2026-04-06</startDate>
            <endDate>2026-04-06</endDate>
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    <context id="c-8">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001287032</identifier>
        </entity>
        <period>
            <startDate>2026-04-06</startDate>
            <endDate>2026-04-06</endDate>
        </period>
    </context>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="number">
        <measure>pure</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="c-8" id="f-46">0001287032</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="c-8" id="f-47">Prospect Capital Corporation</dei:EntityRegistrantName>
    <ffd:FormTp contextRef="c-8" id="f-48">N-2</ffd:FormTp>
    <ffd:SubmissnTp contextRef="c-8" id="f-49">424B2</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c-8" id="f-50">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="c-8" id="f-51">N/A</ffd:OffsetTableNa>
    <ffd:CombinedProspectusTableNa contextRef="c-8" id="f-52">N/A</ffd:CombinedProspectusTableNa>
    <ffd:RegnFileNb contextRef="c-8" id="f-53">333-293349</ffd:RegnFileNb>
    <ffd:PrevslyPdFlg contextRef="c-5" id="f-17">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c-5" id="f-18">Debt</ffd:OfferingSctyTp>
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    <ffd:Rule457oFlg contextRef="c-5" id="f-20">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric contextRef="c-5" decimals="2" id="f-21" unitRef="usd">20000</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c-5" decimals="7" id="f-22" unitRef="number">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c-5" decimals="2" id="f-23" unitRef="usd">2.76</ffd:FeeAmt>
    <ffd:PrevslyPdFlg contextRef="c-6" id="f-24">false</ffd:PrevslyPdFlg>
    <ffd:OfferingSctyTp contextRef="c-6" id="f-25">Debt</ffd:OfferingSctyTp>
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    <ffd:Rule457oFlg contextRef="c-6" id="f-27">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric contextRef="c-6" decimals="2" id="f-28" unitRef="usd">0.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c-6" decimals="7" id="f-29" unitRef="number">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c-6" decimals="2" id="f-30" unitRef="usd">0.00</ffd:FeeAmt>
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    <ffd:OfferingSctyTp contextRef="c-7" id="f-32">Debt</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c-7" id="f-33">7.000% Notes due 2033</ffd:OfferingSctyTitl>
    <ffd:Rule457oFlg contextRef="c-7" id="f-34">true</ffd:Rule457oFlg>
    <ffd:MaxAggtOfferingPric contextRef="c-7" decimals="2" id="f-35" unitRef="usd">0.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate contextRef="c-7" decimals="7" id="f-36" unitRef="number">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt contextRef="c-7" decimals="2" id="f-37" unitRef="usd">0.00</ffd:FeeAmt>
    <ffd:TtlOfferingAmt contextRef="c-8" decimals="2" id="f-38" unitRef="usd">20000</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt contextRef="c-8" decimals="2" id="f-39" unitRef="usd">2.76</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt contextRef="c-8" decimals="2" id="f-40" unitRef="usd">0</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt contextRef="c-8" decimals="2" id="f-41" unitRef="usd">0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt contextRef="c-8" decimals="2" id="f-42" unitRef="usd">2.76</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c-5" id="f-45">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;The registration fee is calculated pursuant to Rule 457(o) under the Securities Act of 1933, as amended (the "Securities Act"), based on the proposed maximum aggregate offering price, and Rule 456(b) and 457(r) under the Securities Act. In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrant initially deferred payment of all of the registration fees relating to the registrant&#x2019;s Registration Statement on Form N-2 (File No. 333-293349), which was filed with the Securities and Exchange Commission (the "SEC") on February 10, 2026 and automatically became effective upon filing with the SEC (the "Registration Statement"). This "Calculation of Filing Fee Table" shall be deemed to update the "Calculation of Filing Fee Table" in the Registration Statement.&lt;/span&gt;</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c-7" id="f-44">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;The registration fee is calculated pursuant to Rule 457(o) under the Securities Act of 1933, as amended (the "Securities Act"), based on the proposed maximum aggregate offering price, and Rule 456(b) and 457(r) under the Securities Act. In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrant initially deferred payment of all of the registration fees relating to the registrant&#x2019;s Registration Statement on Form N-2 (File No. 333-293349), which was filed with the Securities and Exchange Commission (the "SEC") on February 10, 2026 and automatically became effective upon filing with the SEC (the "Registration Statement"). This "Calculation of Filing Fee Table" shall be deemed to update the "Calculation of Filing Fee Table" in the Registration Statement.&lt;/span&gt;</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c-6" id="f-43">&lt;span style="color:#000000;font-family:'Times New Roman',serif;font-size:10pt;font-weight:400;line-height:100%"&gt;The registration fee is calculated pursuant to Rule 457(o) under the Securities Act of 1933, as amended (the "Securities Act"), based on the proposed maximum aggregate offering price, and Rule 456(b) and 457(r) under the Securities Act. In accordance with Rules 456(b) and 457(r) under the Securities Act, the registrant initially deferred payment of all of the registration fees relating to the registrant&#x2019;s Registration Statement on Form N-2 (File No. 333-293349), which was filed with the Securities and Exchange Commission (the "SEC") on February 10, 2026 and automatically became effective upon filing with the SEC (the "Registration Statement"). This "Calculation of Filing Fee Table" shall be deemed to update the "Calculation of Filing Fee Table" in the Registration Statement.&lt;/span&gt;</ffd:OfferingNote>
</xbrl>
