<?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-20220614.xsd" xlink:type="simple"/>
    <context id="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001174922</identifier>
        </entity>
        <period>
            <startDate>2022-06-14</startDate>
            <endDate>2022-06-14</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF80L2ZyYWc6N2ZiOGI2MTRlYmY4NGEyMGI2MDE4Y2MxNDc3ZTkyOTIvdGFibGU6ODQ5YWMxZDg1Mjc4NGRjMzgxYzA1ZjczZjE3ZTY0NTIvdGFibGVyYW5nZTo4NDlhYzFkODUyNzg0ZGMzODFjMDVmNzNmMTdlNjQ1Ml8zLTEtMS0xLTEyODUyMw_b1b7112f-8044-41d5-a4da-95dd8d2b758d">0001174922</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF80L2ZyYWc6N2ZiOGI2MTRlYmY4NGEyMGI2MDE4Y2MxNDc3ZTkyOTIvdGFibGU6ODQ5YWMxZDg1Mjc4NGRjMzgxYzA1ZjczZjE3ZTY0NTIvdGFibGVyYW5nZTo4NDlhYzFkODUyNzg0ZGMzODFjMDVmNzNmMTdlNjQ1Ml80LTEtMS0xLTEyODUyMw_84d9ac90-5f35-4875-9d86-7f29431c1053">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM4_d1c79e87-5b08-4afc-9855-83ad692d5a76">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjMz_7f71b667-a208-450e-b6ae-51efb027ddb9">2022-06-14</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM5_83d62112-7c32-432b-8f7a-d44cb7d27951">WYNN RESORTS, LIMITED</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8wLTAtMS0xLTEyODUyMw_ec28570c-8a1a-4c82-98c5-b8b7151d6fbe">NV</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8wLTItMS0xLTEyODUyMw_78e75de1-3742-49b6-957e-a9d030fbd464">000-50028</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8wLTMtMS0xLTEyODUyMw_7ca752d3-4763-464d-8d79-c66594303a28">46-0484987</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8yLTAtMS0xLTEyODUyMw_94137521-f247-48e8-a1e5-16820509084d">3131 Las Vegas Boulevard South</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8zLTAtMS0xLTEyODUyMw_5bbd0cb3-5640-4890-a747-0049d0f5f3b7">Las Vegas,</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8zLTEtMS0xLTEyODUyMw_a36fb921-592f-4b17-a373-9a4bedb29d7f">NV</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6NzdmNTZjZGZkN2JjNDJjNGI4M2Y1NmMzYWQ3ODZlZDAvdGFibGVyYW5nZTo3N2Y1NmNkZmQ3YmM0MmM0YjgzZjU2YzNhZDc4NmVkMF8zLTMtMS0xLTEyODUyMw_4a2f52d2-b37f-4b26-a328-f0fe1aa62fa9">89109</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM0_60cbdf48-07e7-41aa-ab2e-fa63b92a0854">702</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjQw_d472676a-badb-44c6-8fb1-268a749a3e49">770-7555</dei:LocalPhoneNumber>
    <dei:Security12bTitle
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6ZTRjMTg5ZWEyNzA5NDcyNmE3YjgwMzllYjI2NTA4NzcvdGFibGVyYW5nZTplNGMxODllYTI3MDk0NzI2YTdiODAzOWViMjY1MDg3N18xLTAtMS0xLTEyODUyMw_608aa1d3-ea05-42db-bcd8-81805f99d7c3">Common stock, par value $0.01</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6ZTRjMTg5ZWEyNzA5NDcyNmE3YjgwMzllYjI2NTA4NzcvdGFibGVyYW5nZTplNGMxODllYTI3MDk0NzI2YTdiODAzOWViMjY1MDg3N18xLTItMS0xLTEyODUyMw_9f12de62-ffe8-47b4-b434-8c8ea4aaebfa">WYNN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGFibGU6ZTRjMTg5ZWEyNzA5NDcyNmE3YjgwMzllYjI2NTA4NzcvdGFibGVyYW5nZTplNGMxODllYTI3MDk0NzI2YTdiODAzOWViMjY1MDg3N18xLTQtMS0xLTEyODUyMw_3bae60fc-553b-4336-9811-9ef18ce36506">NASDAQ</dei:SecurityExchangeName>
    <dei:WrittenCommunications
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjQx_d60d63fc-171a-44dc-af99-58ff7097e8ef">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM1_5348a0df-3f97-4e57-86f5-b4927cac7ece">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM2_1edaa3f7-391d-459c-8396-747c9f9036f8">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjQy_60145cbd-eecf-4ba5-b432-030e45168522">false</dei:PreCommencementIssuerTenderOffer>
    <dei:EntityEmergingGrowthCompany
      contextRef="i56948a441bc047aeb55a7b5326c4c2e0_D20220614-20220614"
      id="id3VybDovL2RvY3MudjEvZG9jOjEyNWE2MzI4OWMxNjQ3ODg4YTBkMmFhY2U1MmVkMDc0L3NlYzoxMjVhNjMyODljMTY0Nzg4OGEwZDJhYWNlNTJlZDA3NF8xL2ZyYWc6MTI5OWRhMTE5YzcxNGM3ZWE5NDE2NDkzYWZjMmQ4MzgvdGV4dHJlZ2lvbjoxMjk5ZGExMTljNzE0YzdlYTk0MTY0OTNhZmMyZDgzOF8xNjM3_02bd1d04-a765-4c87-a4eb-a2683d17ee8f">false</dei:EntityEmergingGrowthCompany>
</xbrl>
