<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="odc-20211208.xsd" xlink:type="simple"/>
    <context id="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000074046</identifier>
        </entity>
        <period>
            <startDate>2021-12-08</startDate>
            <endDate>2021-12-08</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y180L2ZyYWc6MGMxMjA1MDI5MzgwNGE2NWI0ZWViMzgyNDYwNzQzODEvdGFibGU6YjBkMDdjODliY2MwNDYzNGI0MWEzMTBhZDU0YTdjMjYvdGFibGVyYW5nZTpiMGQwN2M4OWJjYzA0NjM0YjQxYTMxMGFkNTRhN2MyNl8zLTEtMS0xLTIyODc1_c7faaaee-1ff1-4b55-921e-7a7f77310820">0000074046</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y180L2ZyYWc6MGMxMjA1MDI5MzgwNGE2NWI0ZWViMzgyNDYwNzQzODEvdGFibGU6YjBkMDdjODliY2MwNDYzNGI0MWEzMTBhZDU0YTdjMjYvdGFibGVyYW5nZTpiMGQwN2M4OWJjYzA0NjM0YjQxYTMxMGFkNTRhN2MyNl85LTEtMS0xLTIyODc1_4f502203-93e5-41b8-b8b6-33a7b950359d">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjYz_0fed7a33-7909-4570-87a2-35cb3f04e707">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6NTIyZTM4ZmJhYjQ2NDI1ZmEyYjNjNjVlNGFmNTJjNjQvdGFibGVyYW5nZTo1MjJlMzhmYmFiNDY0MjVmYTJiM2M2NWU0YWY1MmM2NF8wLTEtMS0xLTIyODc1_b6454ff7-cecf-40bb-87ce-3189a9765455">2021-12-08</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjY0_c75de8cb-79c4-4cee-8e38-e397cc04bf01">OIL-DRI CORPORATION OF AMERICA</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjY1_ff26d318-787a-47e4-abeb-26f19f87294e">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjU2_9fe75ce5-42e2-4725-bce6-4cb7de85aeb9">001-12622</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjU3_27819434-21d2-4f85-93c9-24f762130cf3">36-2048898</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjU4_0a842470-adfe-4404-9f99-987c7958b3b7">410 North Michigan Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjY2_44bfcfda-0925-4223-9598-dc618f540d2d">Suite 400</dei:EntityAddressAddressLine2>
    <dei:EntityAddressPostalZipCode
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjY3_237fd05b-9e49-4236-a09a-0101c1d70d6f">60611-4213</dei:EntityAddressPostalZipCode>
    <dei:EntityAddressCityOrTown
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjYw_0fcf64f5-e621-461e-ac08-24fd4d4ced30">Chicago</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjYx_eeb290ca-04fe-45f1-94d9-3610c37ede5e">IL</dei:EntityAddressStateOrProvince>
    <dei:CityAreaCode
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjYy_b1365fd5-1cbe-43a9-a5bc-224ceda6810e">312</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjU5_8126e069-d0e1-40ed-8d0c-d6e80b508a07">321-1515</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6OGIyZWNlY2I3M2MyNDIzNTgwZTVjM2FjZjUwZjU0MzAvdGFibGVyYW5nZTo4YjJlY2VjYjczYzI0MjM1ODBlNWMzYWNmNTBmNTQzMF8wLTEtMS0xLTIyODc1_9ac5e3fd-2677-4edb-8049-220c8b177323">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6MmVlYWE4MTRhMGQyNDU1ZWExZjM4OTU0YjkxZTNiNGUvdGFibGVyYW5nZToyZWVhYTgxNGEwZDI0NTVlYTFmMzg5NTRiOTFlM2I0ZV8wLTEtMS0xLTIyODc1_6f3bd8c7-536a-40ee-ad5b-ddd7ba753ca7">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6MWMxNjU5YmM2OTM3NGFmNWE5ZDcwMjI3NWMyNzQzMjQvdGFibGVyYW5nZToxYzE2NTliYzY5Mzc0YWY1YTlkNzAyMjc1YzI3NDMyNF8wLTEtMS0xLTIyODc1_ab3efbf5-7748-418d-af67-7cf3a59683ec">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6ZTBlZDliZTJlMDdlNGRiZjg3ZDQ4YmNlMmFlMmI2ZDYvdGFibGVyYW5nZTplMGVkOWJlMmUwN2U0ZGJmODdkNDhiY2UyYWUyYjZkNl8wLTEtMS0xLTIyODc1_a643110c-acee-485a-870a-97e050c2886c">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGV4dHJlZ2lvbjo0ZDA3NWNhZjQ5OWQ0ZmM3Yjk0NzRlNzRkYTczYzE4Yl8xNjY4_4026bb90-ba71-4cd5-8cb1-1f5b75d6a2c1">false</dei:EntityEmergingGrowthCompany>
    <dei:Security12bTitle
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6MTYxOTdhYjQwNmI5NDliNGE3NTY1ZTY5ODZjOGM3OGQvdGFibGVyYW5nZToxNjE5N2FiNDA2Yjk0OWI0YTc1NjVlNjk4NmM4Yzc4ZF8xLTAtMS0xLTIyODc1_e1980b88-7c4e-46bb-bc8f-57f191d0ac28">Common Stock, par value $0.10 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6MTYxOTdhYjQwNmI5NDliNGE3NTY1ZTY5ODZjOGM3OGQvdGFibGVyYW5nZToxNjE5N2FiNDA2Yjk0OWI0YTc1NjVlNjk4NmM4Yzc4ZF8xLTEtMS0xLTIyODc1_bda6d330-3b10-418c-bdb0-8dead061a6ec">ODC</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i5826d29047c04c82ac76d6d8b79b2d08_D20211208-20211208"
      id="id3VybDovL2RvY3MudjEvZG9jOmM4YjFkZWI5NDFlNzQ3NGI4NmZlMGU2ZTk1OTZkMzdjL3NlYzpjOGIxZGViOTQxZTc0NzRiODZmZTBlNmU5NTk2ZDM3Y18xL2ZyYWc6NGQwNzVjYWY0OTlkNGZjN2I5NDc0ZTc0ZGE3M2MxOGIvdGFibGU6MTYxOTdhYjQwNmI5NDliNGE3NTY1ZTY5ODZjOGM3OGQvdGFibGVyYW5nZToxNjE5N2FiNDA2Yjk0OWI0YTc1NjVlNjk4NmM4Yzc4ZF8xLTItMS0xLTIyODc1_a2c9a8ad-a16f-4855-88f9-a0ae658f5cda">NYSE</dei:SecurityExchangeName>
</xbrl>
