<?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/2025"
  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/2025/ffd-2025.xsd"
      xlink:type="simple"/>
    <context id="c_offering_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001852131</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>1</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-07-15</startDate>
            <endDate>2026-07-15</endDate>
        </period>
    </context>
    <context id="c_offering_2">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001852131</identifier>
            <segment>
                <xbrldi:typedMember dimension="ffd:OfferingAxis">
                    <dei:lineNo>2</dei:lineNo>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-07-15</startDate>
            <endDate>2026-07-15</endDate>
        </period>
    </context>
    <context id="c_report">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001852131</identifier>
        </entity>
        <period>
            <startDate>2026-07-15</startDate>
            <endDate>2026-07-15</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <ffd:SubmissnTp contextRef="c_report" id="fee_001">S-8</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="c_report" id="fee_002">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="c_report" id="fee_003">0001852131</dei:EntityCentralIndexKey>
    <ffd:PrevslyPdFlg contextRef="c_offering_1" id="fee_004">false</ffd:PrevslyPdFlg>
    <ffd:PrevslyPdFlg contextRef="c_offering_2" id="fee_005">false</ffd:PrevslyPdFlg>
    <ffd:OfferingTableNa contextRef="c_report" id="fee_006" xsi:nil="true"/>
    <ffd:OffsetTableNa contextRef="c_report" id="fee_007">N/A</ffd:OffsetTableNa>
    <ffd:FormTp contextRef="c_report" id="fee_008">S-8</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="c_report" id="fee_009">Nextpower Inc.</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp contextRef="c_offering_1" id="fee_010">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_1" id="fee_011">Class A Common Stock, $0.0001 par value per share, reserved for issuance pursuant to the Inducement Performance Stock Unit Awards</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="c_offering_1" id="fee_012">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="c_offering_1"
      decimals="0"
      id="fee_013"
      unitRef="shares">810733</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_014"
      unitRef="USD">104.38</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_015"
      unitRef="USD">84624310.54</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_016"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="c_offering_1"
      decimals="INF"
      id="fee_017"
      unitRef="USD">11686.62</ffd:FeeAmt>
    <ffd:OfferingSctyTp contextRef="c_offering_2" id="fee_018">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="c_offering_2" id="fee_019">Class A Common Stock, $0.0001 par value per share, reserved for issuance pursuant to the Inducement Restricted Stock Unit Awards</ffd:OfferingSctyTitl>
    <ffd:FeesOthrRuleFlg contextRef="c_offering_2" id="fee_020">true</ffd:FeesOthrRuleFlg>
    <ffd:AmtSctiesRegd
      contextRef="c_offering_2"
      decimals="0"
      id="fee_021"
      unitRef="shares">375000</ffd:AmtSctiesRegd>
    <ffd:MaxOfferingPricPerScty
      contextRef="c_offering_2"
      decimals="INF"
      id="fee_022"
      unitRef="USD">104.38</ffd:MaxOfferingPricPerScty>
    <ffd:MaxAggtOfferingPric
      contextRef="c_offering_2"
      decimals="INF"
      id="fee_023"
      unitRef="USD">39142500.00</ffd:MaxAggtOfferingPric>
    <ffd:FeeRate
      contextRef="c_offering_2"
      decimals="INF"
      id="fee_024"
      unitRef="pure">0.0001381</ffd:FeeRate>
    <ffd:FeeAmt
      contextRef="c_offering_2"
      decimals="INF"
      id="fee_025"
      unitRef="USD">5405.58</ffd:FeeAmt>
    <ffd:TtlOfferingAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_026"
      unitRef="USD">123766810.54</ffd:TtlOfferingAmt>
    <ffd:TtlFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_027"
      unitRef="USD">17092.20</ffd:TtlFeeAmt>
    <ffd:TtlOffsetAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_028"
      unitRef="USD">0.00</ffd:TtlOffsetAmt>
    <ffd:NetFeeAmt
      contextRef="c_report"
      decimals="INF"
      id="fee_029"
      unitRef="USD">17092.20</ffd:NetFeeAmt>
    <ffd:OfferingNote contextRef="c_offering_1" id="fee_030">(a) In the
  event of a stock split, stock dividend or similar transaction involving the Registrant's Class A common stock, $0.0001par value per
  share ("Class A Common Stock"), the number of shares registered hereby shall automatically be adjusted in accordance with Rule 416
  under the Securities Act of 1933, as amended (the "Securities Act"). &lt;br/&gt; &lt;br/&gt; (b) The Proposed Maximum Offering Price Per Share
  is estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) and Rule 457(h) under the Securities
  Act. The proposed maximum offering price per share and the proposed maximum aggregate offering price are based on the average of the
  high ($107.90) and low ($100.86) prices of the Registrant's common stock as reported on the Nasdaq Global Select Market on July 14,
  2026. &lt;br/&gt; &lt;br/&gt; (c) The Registrant does not have any fee offsets. &lt;br/&gt; &lt;br/&gt; (d) Rounded up to the nearest
  cent.</ffd:OfferingNote>
    <ffd:OfferingNote contextRef="c_offering_2" id="fee_031">(a)  In the event of a stock split, stock dividend or similar transaction involving the Class A Common Stock, the number of shares registered hereby shall automatically be adjusted in accordance with Rule 416 under the Securities Act.

&lt;br/&gt;
&lt;br/&gt;
(b)  The Proposed Maximum Offering Price Per Share is estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) and Rule 457(h) under the Securities Act. The proposed maximum offering price per share and the proposed maximum aggregate offering price are based on the average of the high ($107.90) and low ($100.86) prices of the Registrant's common stock as reported on the Nasdaq Global Select Market on July 14, 2026.

&lt;br/&gt;
&lt;br/&gt;
(c)  The Registrant does not have any fee offsets.

&lt;br/&gt;
&lt;br/&gt;
(d)  Rounded up to the nearest cent.</ffd:OfferingNote>
</xbrl>
