<?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/2021"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="wynn-20220623.xsd" xlink:type="simple"/>
    <context id="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001174922</identifier>
        </entity>
        <period>
            <startDate>2022-06-23</startDate>
            <endDate>2022-06-23</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl80L2ZyYWc6MDE5ZDNmM2QyMDUwNDc4MThlNTk2ZjgzM2Q1MTRkOWQvdGFibGU6ZjU0MTgxZGJmYTNhNDViYzlhNTM2ZGVmOGE0NzE2ZTIvdGFibGVyYW5nZTpmNTQxODFkYmZhM2E0NWJjOWE1MzZkZWY4YTQ3MTZlMl8zLTEtMS0xLTEzMTgxNA_0adb2448-6cb2-4bc1-96b7-fdc5062594aa">0001174922</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl80L2ZyYWc6MDE5ZDNmM2QyMDUwNDc4MThlNTk2ZjgzM2Q1MTRkOWQvdGFibGU6ZjU0MTgxZGJmYTNhNDViYzlhNTM2ZGVmOGE0NzE2ZTIvdGFibGVyYW5nZTpmNTQxODFkYmZhM2E0NWJjOWE1MzZkZWY4YTQ3MTZlMl80LTEtMS0xLTEzMTgxNA_f7a62870-1685-4771-b160-ee3c2153259b">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM1_7fbdea5e-0c89-4611-a9d1-9759718e456c">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM2_dbb94bcd-7248-4b8b-adc5-f24d5388c964">2022-06-23</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM3_ccb8e01c-fddf-4d48-973d-6c23b24c8548">WYNN RESORTS, LIMITED</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8wLTAtMS0xLTEzMTgxNA_c1562637-0cb0-42c1-be22-dde43515d8d4">NV</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8wLTItMS0xLTEzMTgxNA_97584aff-8a5c-4d1d-a74a-54828b32402b">000-50028</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8wLTMtMS0xLTEzMTgxNA_1fa9c071-a261-41a2-ab6a-cf958266a447">46-0484987</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8yLTAtMS0xLTEzMTgxNA_7d32d277-33bb-4957-9c6d-ed523b56774e">3131 Las Vegas Boulevard South</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8zLTAtMS0xLTEzMTgxNA_3dddeb5b-9b4c-476a-9c4a-094f49b09998">Las Vegas,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8zLTEtMS0xLTEzMTgxNA_14f1eb1f-6be3-4029-9046-c60983ba8c91">NV</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6NzI2NTkxN2RhNjhhNGY1OTllYzk4MWUzZWEwZTA2NWUvdGFibGVyYW5nZTo3MjY1OTE3ZGE2OGE0ZjU5OWVjOTgxZTNlYTBlMDY1ZV8zLTMtMS0xLTEzMTgxNA_bd604f03-2a48-4374-9d87-c3c4bf411ff5">89109</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM5_07a44214-03a8-4d67-90d2-66290de37847">702</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjQw_d3ca802a-02dd-4a6d-a52d-541967ce9bd1">770-7555</dei:LocalPhoneNumber>
    <dei:Security12bTitle
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6M2M1ODk1MzVmMTZmNGE1Nzg0NGQyOTU2YzJjMjg3YmEvdGFibGVyYW5nZTozYzU4OTUzNWYxNmY0YTU3ODQ0ZDI5NTZjMmMyODdiYV8xLTAtMS0xLTEzMTgxNA_fe389722-9e4b-4fef-b7db-4cc4280a3fc9">Common stock, par value $0.01</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6M2M1ODk1MzVmMTZmNGE1Nzg0NGQyOTU2YzJjMjg3YmEvdGFibGVyYW5nZTozYzU4OTUzNWYxNmY0YTU3ODQ0ZDI5NTZjMmMyODdiYV8xLTItMS0xLTEzMTgxNA_b4fe8aa2-6e06-4aa7-a222-5fb6e7931972">WYNN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGFibGU6M2M1ODk1MzVmMTZmNGE1Nzg0NGQyOTU2YzJjMjg3YmEvdGFibGVyYW5nZTozYzU4OTUzNWYxNmY0YTU3ODQ0ZDI5NTZjMmMyODdiYV8xLTQtMS0xLTEzMTgxNA_92f66d6d-1304-4814-92f1-df77df8763f5">NASDAQ</dei:SecurityExchangeName>
    <dei:WrittenCommunications
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM4_cd824b2a-4f1c-49ac-b266-3b6c78803910">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjMy_88c944f4-14da-425d-bff8-88e42a54e4af">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjMz_6ce5a42b-71bd-435b-b0ee-fb265087e824">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjM0_24339823-cb03-4619-bf5a-fadd83b48e89">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="ie2c6f29e58f74d4c8167a21385888fd8_D20220623-20220623"
      id="id3VybDovL2RvY3MudjEvZG9jOjM2N2RjOWFmY2EwNzQxNWQ5NjQ5YjZkMTYwNTM3N2FiL3NlYzozNjdkYzlhZmNhMDc0MTVkOTY0OWI2ZDE2MDUzNzdhYl8xL2ZyYWc6YzM0ZDMxZjY1YzRjNDA1OThjZmM5ODE3MWNkN2IwYjgvdGV4dHJlZ2lvbjpjMzRkMzFmNjVjNGM0MDU5OGNmYzk4MTcxY2Q3YjBiOF8xNjQx_5d72c83a-a07b-453d-bd30-b1dcfb0002c8">false</dei:EntityEmergingGrowthCompany>
</xbrl>
