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Long-Term Debt - Retail Term Loan (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jul. 25, 2018	Jul. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Amount of term loan facility			$ 13,154,049,000	$ 10,515,272,000
Proceeds from issuance of long-term debt			4,691,953,000	3,893,778,000	$ 2,788,925,000
Cash payment			0	0	$ 3,900,000
Interest Rate Collar
Debt Instrument [Line Items]
Term of interest rate collar		5 years
Interest rate swap notional amount		$ 615,000,000.0
Cash payment		$ 3,900,000
Fair value of interest rate collar liability			16,900,000
Fair value of interest rate collar liability recorded in Other accrued liabilities			5,400,000
Fair value of interest rate collar liability recorded in Other long-term liabilities			11,500,000
Medium-term Notes | Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) | Retail Term Loan, Due 2025
Debt Instrument [Line Items]
Amount of term loan facility	$ 615,000,000.0		$ 615,000,000	$ 615,000,000
Proceeds from issuance of long-term debt	$ 589,000,000
LIBOR | Interest Rate Collar
Debt Instrument [Line Items]
Floor rate		1.00%
Ceiling rate		3.75%
LIBOR | Medium-term Notes | Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) | Retail Term Loan, Due 2025
Debt Instrument [Line Items]
Basis spread on variable rate	1.70%		1.70%
Minimum | LIBOR | Medium-term Notes | Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) | Retail Term Loan, Due 2025
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Maximum | LIBOR | Medium-term Notes | Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) | Retail Term Loan, Due 2025
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%

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