<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:NWAX="http://newamericaacqisition.com/20260805"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:us-gaap="http://fasb.org/us-gaap/2026"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="nwax-20260805.xsd" xlink:type="simple"/>
    <context id="AsOf2026-08-05">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002074878</identifier>
        </entity>
        <period>
            <startDate>2026-08-05</startDate>
            <endDate>2026-08-05</endDate>
        </period>
    </context>
    <context id="From2026-08-052026-08-05_custom_UnitsEachConsistingOfOneShareOfClassCommonStockParValue0.0001PerShareAndOnehalfOfOneRedeemableWarrantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002074878</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">NWAX:UnitsEachConsistingOfOneShareOfClassCommonStockParValue0.0001PerShareAndOnehalfOfOneRedeemableWarrantMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-05</startDate>
            <endDate>2026-08-05</endDate>
        </period>
    </context>
    <context id="From2026-08-052026-08-05_custom_ClassCommonStockParValue0.0001PerShareMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002074878</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">NWAX:ClassCommonStockParValue0.0001PerShareMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-05</startDate>
            <endDate>2026-08-05</endDate>
        </period>
    </context>
    <context id="From2026-08-052026-08-05_custom_WarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableToPurchaseOneShareOfClassCommonStockAtExercisePriceOf11.50Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002074878</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">NWAX:WarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableToPurchaseOneShareOfClassCommonStockAtExercisePriceOf11.50Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2026-08-05</startDate>
            <endDate>2026-08-05</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="AsOf2026-08-05" id="Fact000003">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-08-05" id="Fact000004">0002074878</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="AsOf2026-08-05" id="Fact000009">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="AsOf2026-08-05" id="Fact000010">2026-08-05</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="AsOf2026-08-05" id="Fact000011">NEW AMERICA ACQUISITION I CORP.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="AsOf2026-08-05" id="Fact000012">FL</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="AsOf2026-08-05" id="Fact000013">001-42988</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="AsOf2026-08-05" id="Fact000014">39-2431245</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="AsOf2026-08-05" id="Fact000015">590     Madison Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="AsOf2026-08-05" id="Fact000016">39th Floor</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown contextRef="AsOf2026-08-05" id="Fact000017">New     York</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="AsOf2026-08-05" id="Fact000018">NY</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="AsOf2026-08-05" id="Fact000019">10022</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="AsOf2026-08-05" id="Fact000020">(917)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="AsOf2026-08-05" id="Fact000021">576-6828</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="AsOf2026-08-05" id="Fact000022">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="AsOf2026-08-05" id="Fact000023">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="AsOf2026-08-05" id="Fact000024">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="AsOf2026-08-05" id="Fact000025">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="From2026-08-052026-08-05_custom_UnitsEachConsistingOfOneShareOfClassCommonStockParValue0.0001PerShareAndOnehalfOfOneRedeemableWarrantMember"
      id="Fact000026">Units,     each consisting of one share of Class A common stock, par value $0.0001 per share, and one-half of one redeemable warrant</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="From2026-08-052026-08-05_custom_UnitsEachConsistingOfOneShareOfClassCommonStockParValue0.0001PerShareAndOnehalfOfOneRedeemableWarrantMember"
      id="Fact000027">NWAXU</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="From2026-08-052026-08-05_custom_UnitsEachConsistingOfOneShareOfClassCommonStockParValue0.0001PerShareAndOnehalfOfOneRedeemableWarrantMember"
      id="Fact000028">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="From2026-08-052026-08-05_custom_ClassCommonStockParValue0.0001PerShareMember"
      id="Fact000029">Class     A common stock, par value $0.0001 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="From2026-08-052026-08-05_custom_ClassCommonStockParValue0.0001PerShareMember"
      id="Fact000030">NWAX</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="From2026-08-052026-08-05_custom_ClassCommonStockParValue0.0001PerShareMember"
      id="Fact000031">NYSE</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="From2026-08-052026-08-05_custom_WarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableToPurchaseOneShareOfClassCommonStockAtExercisePriceOf11.50Member"
      id="Fact000032">Warrants     included as part of the units, each whole warrant exercisable to purchase one share of Class A common stock</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="From2026-08-052026-08-05_custom_WarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableToPurchaseOneShareOfClassCommonStockAtExercisePriceOf11.50Member"
      id="Fact000033">NWAXW</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="From2026-08-052026-08-05_custom_WarrantsIncludedAsPartOfUnitsEachWholeWarrantExercisableToPurchaseOneShareOfClassCommonStockAtExercisePriceOf11.50Member"
      id="Fact000034">NYSE</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="AsOf2026-08-05" id="Fact000035">true</dei:EntityEmergingGrowthCompany>
    <dei:EntityExTransitionPeriod contextRef="AsOf2026-08-05" id="Fact000036">false</dei:EntityExTransitionPeriod>
</xbrl>
