<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="ufpi-20251029.xsd" xlink:type="simple"/>
    <context id="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000912767</identifier>
        </entity>
        <period>
            <startDate>2025-10-29</startDate>
            <endDate>2025-10-29</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Tc_X12psabh2ECcMaEXR1HQ7g_2_1">0000912767</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Tc_zaOZFrmhkU-ckZqsaJcsMQ_3_1">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_vRP20CIH50m8a4DGQQIZVw">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_FeTt136ojk6aK5JkkhujtA">2025-10-29</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_sly4LB5eCE-Kt8lGizb8ow">UFP INDUSTRIES, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_Nlxvkb10-EmquPIcBGLr7w">MI</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_EUiXJ9eL302NxyDkRUiGhQ">0-22684</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_tbc6BDU0kkG3B5j1waBvhw">38-1465835</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_Ewtb1wtDs02eLtF4ThEkiw">2801 East Beltline, NE </dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_PYbV6HESrEaN98AMYJX8cw">Grand Rapids</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_0jsrAJ2ECk2PcS7WXpvyjw">MI</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_-nymHKx8v0CBaZbuAjbOuQ">49525</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_gJ7zCKL0UUuXvJqyAXK5zA">616</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_qTQdgttCjE2AZdfogzC1zQ">364-6161</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr__JNklotgR0mg6VwFJCfUJw">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_t769eS_ft0a7nnXbPhdn_g">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_ImwF7JeqcUiagfLN8Rpbyw">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_ikHcqToN40-nwwY__wTxPw">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Tc_zJFU-k7AtUWA8oT8uOhlSg_2_0">Common Stock</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Tc_6Qa1FINKyk6GiRmkmujwDQ_2_1">UFPI</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_l9YuUZpIuk6HRQ44_N2yTA">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="Duration_10_29_2025_To_10_29_2025_bx8iCTUCUUy9M445LofmCg"
      id="Narr_WzvZNoezBk2PROgEm9IzjA">false</dei:EntityEmergingGrowthCompany>
</xbrl>
