<?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="cdk-20220407.xsd" xlink:type="simple"/>
    <context id="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001609702</identifier>
        </entity>
        <period>
            <startDate>2022-04-07</startDate>
            <endDate>2022-04-07</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF80L2ZyYWc6MmUwMjcxZDU1OTc0NGFkZWI5ZTc0MGI1MTJmMTQ4N2MvdGFibGU6MmU4MmY4YzI4MDBlNDdmZDhhNzM3Yzg5NmQ5ZmMyN2UvdGFibGVyYW5nZToyZTgyZjhjMjgwMGU0N2ZkOGE3MzdjODk2ZDlmYzI3ZV8xLTEtMS0xLTYxNDA0_0e6044c6-da2c-4e47-9f15-3be53f60e323">0001609702</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF80L2ZyYWc6MmUwMjcxZDU1OTc0NGFkZWI5ZTc0MGI1MTJmMTQ4N2MvdGFibGU6MmU4MmY4YzI4MDBlNDdmZDhhNzM3Yzg5NmQ5ZmMyN2UvdGFibGVyYW5nZToyZTgyZjhjMjgwMGU0N2ZkOGE3MzdjODk2ZDlmYzI3ZV8yLTEtMS0xLTYxNDA0_58ea69c5-fd5a-4100-94db-684f5cf0e500">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGV4dHJlZ2lvbjo3Y2EzM2IzNTY0OGY0MDljOWE2OTAyZGUyMDE2Mzk2NV85Nzk_9146503f-1ea7-4e4a-bfc1-48d7720a7538">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGV4dHJlZ2lvbjo3Y2EzM2IzNTY0OGY0MDljOWE2OTAyZGUyMDE2Mzk2NV8yNzI_47a29316-e5a7-44b9-8174-0050cf3b62a0">2022-04-07</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGV4dHJlZ2lvbjo3Y2EzM2IzNTY0OGY0MDljOWE2OTAyZGUyMDE2Mzk2NV85ODI_225795ff-a53e-4df4-80ac-5dce5a4eb6b0">CDK GLOBAL, INC.</dei:EntityRegistrantName>
    <dei:EntityRegistrantName
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGV4dHJlZ2lvbjo3Y2EzM2IzNTY0OGY0MDljOWE2OTAyZGUyMDE2Mzk2NV85Nzc_a16d47f2-775c-45a9-b5b1-00c26c8563d4">CDK GLOBAL, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN18wLTAtMS0xLTYxNDA0_f5fd8979-ed94-4316-a460-41e24829cbc5">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN18wLTEtMS0xLTYxNDA0_515d7185-030f-4719-b317-7a2d76363546">001-36486</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN18wLTQtMS0xLTYxNDA0_b92f1990-e6f8-48ea-baf5-3552682a91d4">46-5743146</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN18zLTEtMS0xLTYxNDA0_3288500f-4038-4d9a-b2ed-8247da4ba220">1950 Hassell Road</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN180LTEtMS0xLTYxNDA0_cf39575b-2c2d-475c-86ea-052b479c7cb8">Hoffman Estates,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN180LTItMS0xLTYxNDA0_024565f5-98d2-4658-af0a-19e8c2749d95">IL</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN180LTMtMS0xLTYxNDA0_e4279a6c-aebc-40e0-8f33-a583f3df8863">60169</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN182LTEtMS0xLTYxNDA0_4c637116-44a7-469e-9e47-4321851cdb53">(847)</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6Y2JjODY4MzNjMDkwNDEyNjk0MWEwMjhhMzIxY2I4ZjcvdGFibGVyYW5nZTpjYmM4NjgzM2MwOTA0MTI2OTQxYTAyOGEzMjFjYjhmN182LTItMS0xLTYxNDA0_d70de0c9-b1b1-4466-a811-13a062e35184">397-1700</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6N2E3NGI0MDFkM2U3NDIxMGI2Mzg5MDExZWUwZDczYTQvdGFibGVyYW5nZTo3YTc0YjQwMWQzZTc0MjEwYjYzODkwMTFlZTBkNzNhNF8xLTAtMS0xLTYxNDA0_52027bf4-efb1-4f3b-a8c7-fe6a5d4c615a">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6N2E3NGI0MDFkM2U3NDIxMGI2Mzg5MDExZWUwZDczYTQvdGFibGVyYW5nZTo3YTc0YjQwMWQzZTc0MjEwYjYzODkwMTFlZTBkNzNhNF8yLTAtMS0xLTYxNDA0_99eec69f-a83d-440c-b35a-c538963ed5d1">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6N2E3NGI0MDFkM2U3NDIxMGI2Mzg5MDExZWUwZDczYTQvdGFibGVyYW5nZTo3YTc0YjQwMWQzZTc0MjEwYjYzODkwMTFlZTBkNzNhNF8zLTAtMS0xLTYxNDA0_c6e05bfd-d9dd-4147-851d-42a583df56b0">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6N2E3NGI0MDFkM2U3NDIxMGI2Mzg5MDExZWUwZDczYTQvdGFibGVyYW5nZTo3YTc0YjQwMWQzZTc0MjEwYjYzODkwMTFlZTBkNzNhNF80LTAtMS0xLTYxNDA0_ef6449d8-c769-48b4-9447-9d87de8ebe3b">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6YzU4OGNjMTM4NmUyNGY0NWIyNGY0YjY4ZDlmNjIwYWEvdGFibGVyYW5nZTpjNTg4Y2MxMzg2ZTI0ZjQ1YjI0ZjRiNjhkOWY2MjBhYV8xLTAtMS0xLTYxNDA0_27e6dc4a-e672-4074-a203-b22513709549">Common Stock, $0.01 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6YzU4OGNjMTM4NmUyNGY0NWIyNGY0YjY4ZDlmNjIwYWEvdGFibGVyYW5nZTpjNTg4Y2MxMzg2ZTI0ZjQ1YjI0ZjRiNjhkOWY2MjBhYV8xLTEtMS0xLTYxNDA0_08dd2532-ecf8-418b-a1ac-1a20417b1c70">CDK</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGFibGU6YzU4OGNjMTM4NmUyNGY0NWIyNGY0YjY4ZDlmNjIwYWEvdGFibGVyYW5nZTpjNTg4Y2MxMzg2ZTI0ZjQ1YjI0ZjRiNjhkOWY2MjBhYV8xLTItMS0xLTYxNDA0_f99ee4d4-8ec1-4d83-944c-09271853e49a">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="iae7eebdc064f425ba170b93f95c67363_D20220407-20220407"
      id="id3VybDovL2RvY3MudjEvZG9jOjEzYTMwNjAyZDVmMDQzY2NhYmI0MjQzZWIxMWViZjgwL3NlYzoxM2EzMDYwMmQ1ZjA0M2NjYWJiNDI0M2ViMTFlYmY4MF8xL2ZyYWc6N2NhMzNiMzU2NDhmNDA5YzlhNjkwMmRlMjAxNjM5NjUvdGV4dHJlZ2lvbjo3Y2EzM2IzNTY0OGY0MDljOWE2OTAyZGUyMDE2Mzk2NV85Nzg_407b39e7-f99a-421d-9587-b83e36a54570">false</dei:EntityEmergingGrowthCompany>
</xbrl>
