<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="ck0001330399-20260729.xsd" xlink:type="simple"/>
    <context id="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001330399</identifier>
        </entity>
        <period>
            <startDate>2026-07-29</startDate>
            <endDate>2026-07-29</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_6873988a-a7e0-4f70-897f-aaaf58be6d30">0001330399</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_29451b9f-8d15-423f-8e8c-bea8df2ee73d">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_e7e1f24c-13d9-4175-a573-74853dc0f544">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_fb0d56b0-5774-45d3-bc33-d9d4bd42c55c">2026-07-29</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_ae7cc9b7-08c4-47ec-8eab-88c168546555">Federal Home Loan Bank of Pittsburgh</dei:EntityRegistrantName>
    <dei:EntityFileNumber
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_87c03095-cf97-4981-81ee-1ea5805f0499">000-51395</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_111610c8-7818-4bd9-bcdd-628611a8cb08">25-6001324</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_bdfe0b9a-cea8-43fa-8cf8-073453e1f303">301 Grant Street, Suite 2000</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_af44ca55-52ad-4a06-93d5-d0be0dccd92a">Pittsburgh</dei:EntityAddressCityOrTown>
    <dei:EntityIncorporationStateCountryCode
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_e2df19b3-14ac-4e62-8de7-da7fff38d114">PA</dei:EntityIncorporationStateCountryCode>
    <dei:EntityAddressStateOrProvince
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_70576b8e-b7fd-440b-a3bd-875d2e55a23a">PA</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_15a17616-7909-45fa-9072-322c9bef5085">15219</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_7badaa82-808f-4e62-b9bc-f701b8dbc391">412</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_5e06234c-ec90-4b27-a933-ddb2cf40805a">288-3400</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_a8d914d6-5fde-49f9-aa1a-7fa0ea5d948a">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_d5a908b6-6a53-47a6-a06f-636c13d506b3">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_1cf24002-edd8-4132-a692-bfaa42d33923">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_5246d94a-dd47-4d9c-a646-ebda652a5cd5">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="C_5a708af9-6f4a-4e18-8bfc-243d62cf1e1e"
      id="F_1dee0b5a-84a8-464b-aa46-1c303dd5b783">false</dei:EntityEmergingGrowthCompany>
</xbrl>
