<?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">
    <link:schemaRef
      xlink:href="https://xbrl.sec.gov/ffd/2026/ffd-2026.xsd"
      xlink:type="simple"/>
    <context id="AsOf2026-09-17">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002061233</identifier>
        </entity>
        <period>
            <startDate>2026-09-17</startDate>
            <endDate>2026-09-17</endDate>
        </period>
    </context>
    <context id="From2026-09-172026-09-17_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002061233</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-09-17</startDate>
            <endDate>2026-09-17</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-09-17" id="Fact000003">0002061233</dei:EntityCentralIndexKey>
    <ffd:FeeExhibitTp contextRef="AsOf2026-09-17" id="Fact000009">EX-FILING FEES</ffd:FeeExhibitTp>
    <ffd:OffsetTableNa contextRef="AsOf2026-09-17" id="Fact000010">N/A</ffd:OffsetTableNa>
    <ffd:SubmissnTp contextRef="AsOf2026-09-17" id="Fact000011">SC TO-I/A</ffd:SubmissnTp>
    <ffd:FormTp contextRef="AsOf2026-09-17" id="Fact000012">SC TO</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="AsOf2026-09-17" id="Fact000013">Morgan Stanley Private Markets and Alternatives Fund - Balanced</dei:EntityRegistrantName>
    <ffd:PrevslyPdFlg contextRef="From2026-09-172026-09-17_1" id="Fact000014">true</ffd:PrevslyPdFlg>
    <ffd:TxValtn
      contextRef="From2026-09-172026-09-17_1"
      decimals="INF"
      id="Fact000015"
      unitRef="USD">29788211.22</ffd:TxValtn>
    <ffd:FeeAmt
      contextRef="From2026-09-172026-09-17_1"
      decimals="INF"
      id="Fact000016"
      unitRef="USD">4113.75</ffd:FeeAmt>
    <ffd:TtlTxValtn
      contextRef="AsOf2026-09-17"
      decimals="INF"
      id="Fact000017"
      unitRef="USD">29788211.22</ffd:TtlTxValtn>
    <ffd:TtlFeeAmt
      contextRef="AsOf2026-09-17"
      decimals="INF"
      id="Fact000018"
      unitRef="USD">4113.75</ffd:TtlFeeAmt>
    <ffd:TtlPrevslyPdAmt
      contextRef="AsOf2026-09-17"
      decimals="INF"
      id="Fact000019"
      unitRef="USD">4113.75</ffd:TtlPrevslyPdAmt>
    <ffd:TtlOffsetAmt
      contextRef="AsOf2026-09-17"
      decimals="0"
      id="Fact000020"
      unitRef="USD">-0</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="AsOf2026-09-17"
      decimals="INF"
      id="Fact000021"
      unitRef="USD">0.00</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="From2026-09-172026-09-17_1" id="Fact000022">
&lt;table cellpadding="0" cellspacing="0" style="width: 100%; font: 11pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"&gt;&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 0.25in"&gt;&lt;/td&gt;&lt;td id="xdx_F02_zJexbU1W62C7" style="width: 0.25in"&gt;(1)&lt;/td&gt;&lt;td id="xdx_F16_zuEHjRHbdM0h"&gt;Calculated as the aggregate maximum value of Shares being purchased. The fee of $$4,113.75 was paid in connection with the filing
of the Schedule TO-I by Morgan Stanley Private Markets and Alternatives Fund - Balanced (File No. 005-95504) on May 15, 2026 (the &#x201c;Schedule
TO&#x201d;). This is the final amendment to the Schedule TO and is being filed to report the results of the offer.&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</ffd:OfferingNote>
    <link:footnoteLink
      xlink:role="http://www.xbrl.org/2003/role/link"
      xlink:type="extended">
        <link:loc
          xlink:href="#Fact000015"
          xlink:label="Fact000015"
          xlink:type="locator"/>
        <link:footnote id="Footnote000023" xlink:label="Footnote000023" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">Calculated as the aggregate maximum value of Shares being purchased. The fee of $$4,113.75 was paid in connection with the filing
of the Schedule TO-I by Morgan Stanley Private Markets and Alternatives Fund - Balanced (File No. 005-95504) on May 15, 2026 (the &#x201c;Schedule
TO&#x201d;). This is the final amendment to the Schedule TO and is being filed to report the results of the offer.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="Fact000015"
          xlink:to="Footnote000023"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#Fact000017"
          xlink:label="Fact000017"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="Fact000017"
          xlink:to="Footnote000023"
          xlink:type="arc"/>
    </link:footnoteLink>
</xbrl>
