Long-Term Debt Long-Term Debt - Wynn Macau Credit Facilities (Details) $ in Thousands, MOP$ in Millions		12 Months Ended
	Sep. 30, 2015 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 MOP (MOP$)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 MOP (MOP$)
Line of Credit Facility [Line Items]
Loss on extinguishment of debt		$ (104)		$ 55,360	$ 0
Senior Term Loan Facility, Due 2022 | Wynn Macau
Line of Credit Facility [Line Items]
Consolidated leverage ratio, minimum		4.5	4.5
Consolidated leverage ratio excess cash flow percentage		25.00%	25.00%
Interest coverage ratio, minimum		2.00	2.00
Senior Term Loan Facility, Due 2022 | Wynn Macau | Revolving Credit Facility
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 750,000
Senior Term Loan Facility, Due 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Final payment percent, principal	50.00%
Interest rate during period on debt		4.17%	4.17%	3.16%
Senior Term Loan Facility, Due 2022 | Wynn Macau | Secured Debt | Secured Debt
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 2,300,000
Conditional increase limit on line of credit	$ 1,000,000
Amended Common Terms Agreement, Senior Term Loan Facility, Due June 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Final payment percent, principal		75.00%	75.00%
Minimum | Senior Term Loan Facility, Due 2022 | Wynn Macau | Revolving Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage		0.52%	0.52%
Minimum | Senior Term Loan Facility, Due 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Periodic principal payment percent	2.50%
Minimum | Amended Common Terms Agreement, Senior Term Loan Facility, Due June 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Periodic principal payment percent		2.875%	2.875%
Maximum | Senior Term Loan Facility, Due 2022 | Wynn Macau
Line of Credit Facility [Line Items]
Debt covenant, maximum leverage ratio		4.75				4.75
Maximum | Senior Term Loan Facility, Due 2022 | Wynn Macau | Revolving Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage		0.79%	0.79%
Maximum | Senior Term Loan Facility, Due 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Periodic principal payment percent	7.33%
Maximum | Amended Common Terms Agreement, Senior Term Loan Facility, Due June 2022 | Wynn Macau | Term Loans
Line of Credit Facility [Line Items]
Periodic principal payment percent		4.50%	4.50%
Performance Guarantee | Bank Guarantee Reimbursement Agreement | Wynn Macau
Line of Credit Facility [Line Items]
Bank guarantee carrying amount		$ 37,300				MOP$ 300.0
Period after the end of the term of the concession agreement that the guarantee amount will remain unchanged		180 days	180 days
Maximum guarantee by Macau government		$ 300	MOP$ 2.3