Stock-Based Compensation - Schedule of Nonvested Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share Award Plan
Shares:
Nonvested, beginning of period	8,446,838
Granted	6,599,024
Vested	0
Forfeited	(1,036,728)
Nonvested, end of period	14,009,134	8,446,838
Weighted Average Grant Date Fair Value:
Nonvested, beginning of period	$ 3.54
Granted	1.38	$ 1.95	$ 3.81
Vested	0.00
Forfeited	2.41
Nonvested, end of period	2.61	3.54
Share Option Plan
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 0.31	$ 0.47	$ 0.94
Weighted Average Grant Date Fair Value:
Intrinsic value of stock options exercised	$ 0	$ 0	$ 1,134,000
Cash received from the exercise of stock options	$ 0	$ 0	$ 773,000
Wynn Resorts Limited 2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 63.56	$ 145.92	$ 209.92
Fair value of shares vested	$ 39,380,000	$ 22,877,000	$ 9,430,000
Nonvested Awards, Unamortized Compensation Cost Not yet Recognized	$ 12,200,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 9 months
Shares:
Nonvested, beginning of period	354,206
Granted	412,504
Vested	(554,954)
Forfeited	(60,000)
Nonvested, end of period	151,756	354,206
Weighted Average Grant Date Fair Value:
Nonvested, beginning of period	$ 118.61
Granted	63.56
Vested	78.84
Forfeited	124.32
Nonvested, end of period	$ 112.14	$ 118.61
Intrinsic value of stock options exercised	$ 3,657,000	$ 1,684,000	30,485,000
Cash received from the exercise of stock options	$ 3,487,000	$ 3,026,000	$ 11,086,000