<?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-20220323.xsd" xlink:type="simple"/>
    <context id="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000074046</identifier>
        </entity>
        <period>
            <startDate>2022-03-23</startDate>
            <endDate>2022-03-23</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M180L2ZyYWc6MGIwZDRjZDlkOTE4NDhhYjg2MDM0ZGM0YzE1ZGJmZDcvdGFibGU6NTc1ZTIwYTZiN2QxNGYzNmI0M2E2ZTI5NWQxNWE1NDkvdGFibGVyYW5nZTo1NzVlMjBhNmI3ZDE0ZjM2YjQzYTZlMjk1ZDE1YTU0OV8zLTEtMS0xLTIzMTA5_73bcb47c-a5b9-4697-a217-52eb46d06d3a">0000074046</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M180L2ZyYWc6MGIwZDRjZDlkOTE4NDhhYjg2MDM0ZGM0YzE1ZGJmZDcvdGFibGU6NTc1ZTIwYTZiN2QxNGYzNmI0M2E2ZTI5NWQxNWE1NDkvdGFibGVyYW5nZTo1NzVlMjBhNmI3ZDE0ZjM2YjQzYTZlMjk1ZDE1YTU0OV80LTEtMS0xLTIzMTA5_ce579c33-a7fe-4f84-8b26-e7af2b163d8e">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjY4_85910a93-434b-4d84-bd27-262d421ccc7c">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6MzBkYWE2ZmI3ZjgwNGMxOTkzMjY2MjY3ZmMzYjgwODAvdGFibGVyYW5nZTozMGRhYTZmYjdmODA0YzE5OTMyNjYyNjdmYzNiODA4MF8wLTEtMS0xLTIzMTA5_99900217-1e0c-44c8-bac4-e7633908a635">2022-03-23</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjYy_168b8c83-cf61-4435-9dbc-556383478cd5">OIL-DRI CORPORATION OF AMERICA</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjU2_870d8f97-962a-4fe0-b751-b5d0449146da">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjU3_112944fb-04b4-4a7a-845f-761d3448618c">001-12622</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjYz_9a2535f1-9788-4631-82f9-61a93523cc23">36-2048898</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjU4_b7084c9f-21d8-40c5-a9fd-6702524d92cc">410 North Michigan Avenue</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjY0_0a531ec0-b268-4417-b29b-00b13573f0ee">Suite 400</dei:EntityAddressAddressLine2>
    <dei:EntityAddressPostalZipCode
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjY1_11dee413-ab43-4df5-a80e-aba330beaedf">60611-4213</dei:EntityAddressPostalZipCode>
    <dei:EntityAddressCityOrTown
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjU5_43b45540-1892-4c91-85c4-385683a9ea1d">Chicago</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjYw_caaadfb1-03b2-4e74-ba78-1ceb85ada2a0">IL</dei:EntityAddressStateOrProvince>
    <dei:CityAreaCode
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjY2_185de5f2-e05b-4451-bc60-2bfe3bfc1504">312</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjYx_6fcbc7e0-8674-4d05-aa36-f5f1da31caba">321-1515</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6MGM5YmQ2NzBkMzZmNGY4OWFiYWU0N2U5YjMzYzNmNjcvdGFibGVyYW5nZTowYzliZDY3MGQzNmY0Zjg5YWJhZTQ3ZTliMzNjM2Y2N18wLTEtMS0xLTIzMTA5_57d1da09-db7a-4637-9cda-265110c711f8">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6NjFjMmViNzE0YWRjNDU0ZGJjMDg3ODA5NWY3MzU3ODQvdGFibGVyYW5nZTo2MWMyZWI3MTRhZGM0NTRkYmMwODc4MDk1ZjczNTc4NF8wLTEtMS0xLTIzMTA5_3a8da713-495a-45e1-a687-3a2211522333">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6MzkwODY4ZmJmMTEzNGE0Zjk4MDM3YzBhMGFjZDY3NTgvdGFibGVyYW5nZTozOTA4NjhmYmYxMTM0YTRmOTgwMzdjMGEwYWNkNjc1OF8wLTEtMS0xLTIzMTA5_96f61121-4cbd-42e0-b3c6-60e6d606913e">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6NjIzODYyZGUxNWVlNDA4ZThkNjAxMDVlMjUyNmRkNWEvdGFibGVyYW5nZTo2MjM4NjJkZTE1ZWU0MDhlOGQ2MDEwNWUyNTI2ZGQ1YV8wLTEtMS0xLTIzMTA5_e0f5b04d-c0e2-42b4-815f-22ac81caeb4c">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGV4dHJlZ2lvbjo1ZmZiYWFiNmI3ZDI0NDJmOGY5NzUxOTM3Y2ViZDBmMl8xNjY3_fc6d70b9-0186-439b-8627-2a94d65ee6c5">false</dei:EntityEmergingGrowthCompany>
    <dei:Security12bTitle
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6YTljMDE2MGZlYjQxNDNiOGIzY2JkMzFlNTRiYTdlYWYvdGFibGVyYW5nZTphOWMwMTYwZmViNDE0M2I4YjNjYmQzMWU1NGJhN2VhZl8xLTAtMS0xLTIzMTA5_32c586fd-a906-45a0-bfe2-a63bfce016b7">Common Stock, par value $0.10 per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6YTljMDE2MGZlYjQxNDNiOGIzY2JkMzFlNTRiYTdlYWYvdGFibGVyYW5nZTphOWMwMTYwZmViNDE0M2I4YjNjYmQzMWU1NGJhN2VhZl8xLTEtMS0xLTIzMTA5_21cdb8e2-c83c-4281-874d-0187ab571c09">ODC</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i02179eb716cd46c3a9ce34447c315be5_D20220323-20220323"
      id="id3VybDovL2RvY3MudjEvZG9jOjQzYTVmNGE4NTEwYTQ3MGM5ODFmMmVlMzNjNzZkYjUzL3NlYzo0M2E1ZjRhODUxMGE0NzBjOTgxZjJlZTMzYzc2ZGI1M18xL2ZyYWc6NWZmYmFhYjZiN2QyNDQyZjhmOTc1MTkzN2NlYmQwZjIvdGFibGU6YTljMDE2MGZlYjQxNDNiOGIzY2JkMzFlNTRiYTdlYWYvdGFibGVyYW5nZTphOWMwMTYwZmViNDE0M2I4YjNjYmQzMWU1NGJhN2VhZl8xLTItMS0xLTIzMTA5_edeaccc1-ed4f-4518-9664-5b903b308af3">NYSE</dei:SecurityExchangeName>
</xbrl>
