<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:country="http://xbrl.sec.gov/country/2025"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:ppta="http://www.perpetuaresources.com/20260604"
  xmlns:rxp="http://xbrl.sec.gov/rxp/2025"
  xmlns:snj="http://xbrl.sec.gov/snj/2025"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="ppta-20260604.xsd" xlink:type="simple"/>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember_YyFa6aJjwUWWAv3GlPznpQ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:CountryAxis">country:US</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="rxp:GovernmentAxis">ppta:NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember_1zJEuOax1E2UqcvmqCAWdw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:CountryAxis">country:US</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="rxp:GovernmentAxis">ppta:StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoDepartmentOfLandsMember_benMK5ZUB0Wna7CuS5g9Qw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:CountryAxis">country:US</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="rxp:GovernmentAxis">ppta:StateOfIdahoDepartmentOfLandsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember_jRLZg5Av3EaSE2rgwAxXYw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:CountryAxis">country:US</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="rxp:GovernmentAxis">ppta:GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember_ntffyA4tAEG9VJcwSbOgUQ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:CountryAxis">country:US</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="rxp:GovernmentAxis">ppta:GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_ProjectAxis_ppta_StibniteGoldProjectMember_ApRPqxmelUCF9fdWvg-fFQ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:explicitMember dimension="rxp:ProjectAxis">ppta:StibniteGoldProjectMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>9</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>8</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>7</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_6_J-4fOCROTkuDYhK_2rYx0A">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>6</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>5</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_4_N0vwU9BevkKFhofPxKLN4Q">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>4</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>3</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>2</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_10_-CVsvZcuv0iqB7VCMqscDw">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>10</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
            <segment>
                <xbrldi:typedMember dimension="rxp:PmtAxis">
                    <rxp:pmt>1</rxp:pmt>
                </xbrldi:typedMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <context id="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001526243</identifier>
        </entity>
        <period>
            <startDate>2025-01-01</startDate>
            <endDate>2025-12-31</endDate>
        </period>
    </context>
    <unit id="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">
        <measure>iso4217:USD</measure>
    </unit>
    <dei:DocumentType
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_cLEiMY2zb0uzfT-UEngBTA_1_1">2.01 SD</dei:DocumentType>
    <dei:AmendmentFlag
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_hpk3VSP-QUmoTnEFqgCsJA_2_1">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_FFMsO7W3Y0qFex9Sz-QB7w_3_1">0001526243</dei:EntityCentralIndexKey>
    <rxp:AlternativeReportingRegime
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Hidden_tWd_KhfcREuPmS36q1t0JA">CA</rxp:AlternativeReportingRegime>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      decimals="0"
      id="Tc_rsu6gETSZEa8d-BOZCSF4A_2_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">250796</rxp:A>
    <rxp:P
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      id="Tc_Y8B3N4BYfEO6aalEy9SOoA_2_2">rxp:Fees</rxp:P>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      id="Tc_rnUHONCYb0-sGHNX_BTtkA_2_3">country:US</rxp:Co>
    <rxp:Sn
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      id="Tc_JAzeFY9gNEK3KZg3sbClJg_2_4">snj:US-ID</rxp:Sn>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      id="Tc_k7uzmdKMB0-1TWQLJ7plJA_2_5">ppta:StateOfIdahoDepartmentOfLandsMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_1_M29fuJNMf0yjCkG2VY_R5w"
      id="Tc_0PrlS2F6x0iC3ZgsyAupYA_2_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ"
      decimals="0"
      id="Tc_wbQ8Vvz6DE6M6c6HraxDeA_3_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">250796</rxp:A>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ"
      id="Tc_uu053keBJkidcLz2x_HGtA_3_3">country:US</rxp:Co>
    <rxp:Sn
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ"
      id="Tc_gpJUDAex8kO0igGJWMTjqQ_3_4">snj:US-ID</rxp:Sn>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ"
      id="Tc_T7pYX3X3Hk6G3-d6DPQCdA_3_5">ppta:StateOfIdahoDepartmentOfLandsMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_2_rCc7S3usoU6OBt5_RKyBEQ"
      id="Tc_EfJIEXx5Bk6FkfFMIwS-ZQ_3_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw"
      decimals="0"
      id="Tc__81qZHEChECBVdMqDrEpHw_4_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">165216</rxp:A>
    <rxp:P
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw"
      id="Tc_LncaHT53LEKdjNLSLefyVA_4_2">rxp:Fees</rxp:P>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw"
      id="Tc_jgcpvKgEmUiZD2m7RrAEYw_4_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw"
      id="Tc_uCOMUF_swUSe3r1N2WPsJQ_4_5">ppta:GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_3_nUDMhuPwqUu00F6p7dRtVw"
      id="Tc_8NFQiRcJZ0a5iwtPkCGCfA_4_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_4_N0vwU9BevkKFhofPxKLN4Q"
      decimals="0"
      id="Tc_aCmWZUNsoEGLWGC_J5PfYg_5_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">165216</rxp:A>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_4_N0vwU9BevkKFhofPxKLN4Q"
      id="Tc_1v--ewAiVkaHm9pOQJhxUA_5_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_4_N0vwU9BevkKFhofPxKLN4Q"
      id="Tc_7onlWBXB70KDXaiO6FT7vw_5_5">ppta:GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_4_N0vwU9BevkKFhofPxKLN4Q"
      id="Tc_LFrjHbrXFkm_5vajyvcb_w_5_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg"
      decimals="0"
      id="Tc_QWagccg510qeRYv_EF0jjQ_6_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">334800</rxp:A>
    <rxp:P
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg"
      id="Tc_2DWL3lkatkaaj2gZsxRPUQ_6_2">rxp:Fees</rxp:P>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg"
      id="Tc_qvcZZgrV2USBNbexE580wA_6_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg"
      id="Tc_175fNqC6REiJUPC-nvgt5g_6_5">ppta:GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_5_jgoVXhfaK0e2mBfFc_pHkg"
      id="Tc_jk_dtgGnG0ufvAfOcqfWnQ_6_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_6_J-4fOCROTkuDYhK_2rYx0A"
      decimals="0"
      id="Tc_t-C-Hhxez0CZT169wkPvuQ_7_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">334800</rxp:A>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_6_J-4fOCROTkuDYhK_2rYx0A"
      id="Tc_VX-7SELkCEuXqJgpPmesZw_7_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_6_J-4fOCROTkuDYhK_2rYx0A"
      id="Tc_DgABBA192kub21-ADtCmRA_7_5">ppta:GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_6_J-4fOCROTkuDYhK_2rYx0A"
      id="Tc_yFYFw3JeOEWhglcqCQsVIQ_7_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      decimals="0"
      id="Tc_XmchvjV0wUGfsfde97p0oQ_8_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">225151</rxp:A>
    <rxp:P
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      id="Tc_B05bKVYYWEiL4l7dqaVePg_8_2">rxp:Fees</rxp:P>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      id="Tc_VHufvPQkDk2zuPeq4aFoZw_8_3">country:US</rxp:Co>
    <rxp:Sn
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      id="Tc_S2hyWFDcyEuj4VBv6lzDeg_8_4">snj:US-ID</rxp:Sn>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      id="Tc_zV1NkNvfZ0ScGSMQi4F54Q_8_5">ppta:StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_7_U79L2nH4aka9KlHRdg9zkw"
      id="Tc_aXyfOPJRTUGqkE0M6gOP0g_8_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q"
      decimals="0"
      id="Tc_RoX6-QNJh06fl-zJQ-2ygg_9_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">225151</rxp:A>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q"
      id="Tc_zlJuSWvLVkGU7pwo8DVoiQ_9_3">country:US</rxp:Co>
    <rxp:Sn
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q"
      id="Tc_ae6VoFDhxUOl89U6NuCw9A_9_4">snj:US-ID</rxp:Sn>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q"
      id="Tc_L2IdP3h6402y9IiGXBR30w_9_5">ppta:StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_8_WseNeLgsPUCY013Oj8vf9Q"
      id="Tc_wPRtbTpHakuHAiB2oPwx6Q_9_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ"
      decimals="0"
      id="Tc_64NGQNVYNUut5iYb4vAN5A_10_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1000000</rxp:A>
    <rxp:P
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ"
      id="Tc_k4bIsoTunkWgQOtndDmIpw_10_2">rxp:InfrastructureImprovements</rxp:P>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ"
      id="Tc_06oEm7V-LUCvkdyr7i3weQ_10_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ"
      id="Tc_mYin_Dte3ku6aKX5pS1gww_10_5">ppta:NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_9_eH2rH93yk02R3yVaLrjpSQ"
      id="Tc_BBaSgzwS_UWNYK0rhUPQmQ_10_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <rxp:A
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_10_-CVsvZcuv0iqB7VCMqscDw"
      decimals="0"
      id="Tc_owSYG1OAkk22lwOZI6fXNQ_11_1"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1000000</rxp:A>
    <rxp:Co
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_10_-CVsvZcuv0iqB7VCMqscDw"
      id="Tc_qKgApM-boEGa2kUch-PVgA_11_3">country:US</rxp:Co>
    <rxp:Gv
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_10_-CVsvZcuv0iqB7VCMqscDw"
      id="Tc_WiCxCApGsECNvlVVCu3JeQ_11_5">ppta:NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember</rxp:Gv>
    <rxp:Pr
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_PmtAxis_10_-CVsvZcuv0iqB7VCMqscDw"
      id="Tc_l9xG3iTOxUatVYotj9Q8Ig_11_6">ppta:StibniteGoldProjectMember</rxp:Pr>
    <dei:DocumentPeriodEndDate
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_OpVBj6w8dky5gwnB4_wIMw_2_5">2025-12-31</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_rnn3ksmodkahtT0F8DBw-w_3_3">Perpetua Resources Corp.</dei:EntityRegistrantName>
    <dei:EntityReportingCurrencyISOCode
      contextRef="Duration_1_1_2025_To_12_31_2025_lB5JLUGYXESDy7W7q_IpOg"
      id="Tc_aM_dKWXZ5kuCLcTgPtOStg_3_8">USD</dei:EntityReportingCurrencyISOCode>
    <rxp:Fees
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoDepartmentOfLandsMember_benMK5ZUB0Wna7CuS5g9Qw"
      decimals="0"
      id="Tc_9NTR1BAEjkq3WdV7J04hTA_3_5"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">250796</rxp:Fees>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoDepartmentOfLandsMember_benMK5ZUB0Wna7CuS5g9Qw"
      decimals="0"
      id="Tc_UFKUEID5MkeyDJzRDpFOFA_3_10"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">250796</rxp:TotalPayments>
    <rxp:Fees
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember_jRLZg5Av3EaSE2rgwAxXYw"
      decimals="0"
      id="Tc_4A3zp5EQPU6DJ2vKTG_rrQ_4_5"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">165216</rxp:Fees>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaUnitedStatesForestServiceMember_jRLZg5Av3EaSE2rgwAxXYw"
      decimals="0"
      id="Tc_omc4eQaDUE27z2My7x52sw_4_10"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">165216</rxp:TotalPayments>
    <rxp:Fees
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember_ntffyA4tAEG9VJcwSbOgUQ"
      decimals="0"
      id="Tc_Hm6UYm3PCE6UznAwI7MtBw_5_5"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">334800</rxp:Fees>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_GovernmentOfUnitedStatesOfAmericaBureauOfLandManagementMember_ntffyA4tAEG9VJcwSbOgUQ"
      decimals="0"
      id="Tc_ZGuqYZlNvU2VNLDXYFfjLA_5_10"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">334800</rxp:TotalPayments>
    <rxp:Fees
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember_1zJEuOax1E2UqcvmqCAWdw"
      decimals="0"
      id="Tc_owF4fbXzG0CNIRAwQSeBpQ_6_5"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">225151</rxp:Fees>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_StateOfIdahoIdahoDepartmentOfEnvironmentalQualityMember_1zJEuOax1E2UqcvmqCAWdw"
      decimals="0"
      id="Tc_rG1lo_NMKUyZsgO3DFZ3ug_6_10"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">225151</rxp:TotalPayments>
    <rxp:InfrastructureImprovements
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember_YyFa6aJjwUWWAv3GlPznpQ"
      decimals="0"
      id="Tc_J8LmcHtyjEWb9iEtW_KD6A_7_9"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1000000</rxp:InfrastructureImprovements>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_CountryAxis_country_US_rxp_GovernmentAxis_ppta_NezPerceTribeSouthForkSalmonWaterQualityEnhancementFundMember_YyFa6aJjwUWWAv3GlPznpQ"
      decimals="0"
      id="Tc_cmBWMDUXUkuIPd38-wvFXw_7_10"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1000000</rxp:TotalPayments>
    <rxp:Fees
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_ProjectAxis_ppta_StibniteGoldProjectMember_ApRPqxmelUCF9fdWvg-fFQ"
      decimals="0"
      id="Tc_O8F5UBgdeEGEXzRYZ72hlw_2_4"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">975963</rxp:Fees>
    <rxp:InfrastructureImprovements
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_ProjectAxis_ppta_StibniteGoldProjectMember_ApRPqxmelUCF9fdWvg-fFQ"
      decimals="0"
      id="Tc_V6thkUQknkOPWse2M6pvug_2_8"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1000000</rxp:InfrastructureImprovements>
    <rxp:TotalPayments
      contextRef="Duration_1_1_2025_To_12_31_2025_rxp_ProjectAxis_ppta_StibniteGoldProjectMember_ApRPqxmelUCF9fdWvg-fFQ"
      decimals="0"
      id="Tc_upNhGJFGUEKEkQ5m4VRK1Q_2_9"
      unitRef="Unit_Standard_USD__YLRybJu3ECQ2iS_9GW9sA">1975963</rxp:TotalPayments>
</xbrl>
