<?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="wynn-20220510.xsd" xlink:type="simple"/>
    <context id="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001174922</identifier>
        </entity>
        <period>
            <startDate>2022-05-10</startDate>
            <endDate>2022-05-10</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV80L2ZyYWc6ZmIwMjUwOTM1Y2Y3NDIyOTk2NWM4ZjkwNTQ2MzU2MzIvdGFibGU6YWM5ZWUxYTdiYzU1NGMzN2I5MjJlZTY0NDhlZmM4OTQvdGFibGVyYW5nZTphYzllZTFhN2JjNTU0YzM3YjkyMmVlNjQ0OGVmYzg5NF8wLTEtMS0xLTk1NDg1_c99c1548-8a95-404d-94fe-1e2d89415e93">0001174922</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV80L2ZyYWc6ZmIwMjUwOTM1Y2Y3NDIyOTk2NWM4ZjkwNTQ2MzU2MzIvdGFibGU6YWM5ZWUxYTdiYzU1NGMzN2I5MjJlZTY0NDhlZmM4OTQvdGFibGVyYW5nZTphYzllZTFhN2JjNTU0YzM3YjkyMmVlNjQ0OGVmYzg5NF8xLTEtMS0xLTk1NDg1_be3498ac-2f0c-4050-82d0-eeb47d8c8ee6">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM0_a2598d58-67fa-4509-b0cc-a287adce9888">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM3_44a9710f-183a-4eff-8bed-ab3e1ea5ffc1">2022-05-10</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM4_2f01e7d8-ba2e-40da-ad7b-4a1e0e07a6b4">WYNN RESORTS, LIMITED</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8wLTAtMS0xLTk1NDg1_a412088c-ada4-4cb1-81f7-ce71472b222d">NV</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8wLTItMS0xLTk1NDg1_80d5048f-caee-4cc6-a8df-7fbde829efe2">000-50028</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8wLTMtMS0xLTk1NDg1_66ce3377-df0b-40fd-bc54-262698f7c5eb">46-0484987</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8yLTAtMS0xLTk1NDg1_2c79d334-a346-487e-97fe-24b6412e7404">3131 Las Vegas Boulevard South</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8zLTAtMS0xLTk1NDg1_07ff49fa-3fd4-43aa-9119-c3f9b92a72d8">Las Vegas,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8zLTEtMS0xLTk1NDg1_34777a83-03b1-4d39-8b30-b6bfadb39e33">NV</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWRhNTM5ZGI1MTMzNGQ5NWI3MGJmOGQ5ZDIwZDRlZmQvdGFibGVyYW5nZTplZGE1MzlkYjUxMzM0ZDk1YjcwYmY4ZDlkMjBkNGVmZF8zLTMtMS0xLTk1NDg1_9a52a93f-dc09-47a6-bf29-0c8dced3ded1">89109</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM5_81c04767-3f2a-456b-8684-c7f40c60f0f3">702</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjQw_b9e94546-b1da-48d2-8f4c-35a10e94fed8">770-7555</dei:LocalPhoneNumber>
    <dei:Security12bTitle
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWE3NjQ3YTg3ZDI2NGNiZTliOWEyYmYzZTAwMzhiN2IvdGFibGVyYW5nZTplYTc2NDdhODdkMjY0Y2JlOWI5YTJiZjNlMDAzOGI3Yl8xLTAtMS0xLTk1NDg1_a6e4baa4-dc4b-4988-9559-0574dbeb3058">Common stock, par value $0.01</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWE3NjQ3YTg3ZDI2NGNiZTliOWEyYmYzZTAwMzhiN2IvdGFibGVyYW5nZTplYTc2NDdhODdkMjY0Y2JlOWI5YTJiZjNlMDAzOGI3Yl8xLTItMS0xLTk1NDg1_bc6e08b9-475d-4ab1-a6c6-c7a50fbd4c1d">WYNN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGFibGU6ZWE3NjQ3YTg3ZDI2NGNiZTliOWEyYmYzZTAwMzhiN2IvdGFibGVyYW5nZTplYTc2NDdhODdkMjY0Y2JlOWI5YTJiZjNlMDAzOGI3Yl8xLTQtMS0xLTk1NDg1_44e93a67-94dd-400f-bd0c-bb2665c2a0e9">NASDAQ</dei:SecurityExchangeName>
    <dei:WrittenCommunications
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjQx_c8e9a8f1-8c76-46fc-9209-32645651ddad">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjQy_00b41935-363d-43bb-a79a-b4937637b5d8">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM1_fa88e1f1-221c-4b69-9109-32eb6e85f743">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjQz_fed6472e-70f7-45a4-ab9f-5c4c3fce96bb">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="i8011f8f3a5d543028696df70eb1a6fbd_D20220510-20220510"
      id="id3VybDovL2RvY3MudjEvZG9jOmE0NDUxMDEwNDYzYjQ2YTBiNzhlOTZjODQ0YWEwYmZhL3NlYzphNDQ1MTAxMDQ2M2I0NmEwYjc4ZTk2Yzg0NGFhMGJmYV8xL2ZyYWc6YjdiYWE0ODk1ZTIzNGRjNWEzYWFiMWJkMTQ5MGJmYjkvdGV4dHJlZ2lvbjpiN2JhYTQ4OTVlMjM0ZGM1YTNhYWIxYmQxNDkwYmZiOV8xNjM2_b51d1aba-5f11-4d46-ad7e-f9e9413a268b">false</dei:EntityEmergingGrowthCompany>
</xbrl>
