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Schedule of Shares used in Calculation of Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to Wynn Resorts, Ltd.	$ 226,896	$ 202,963
Weighted average common shares outstanding (used in calculation of basic earnings per share)	100,822	100,237
Potential dilutive effect of stock options and restricted stock	1,187	1,136
Weighted average common and common equivalent shares outstanding (used in calculation of diluted earnings per share)	102,009	101,373
Net income attributable to Wynn Resorts, Ltd. per common share, basic (in dollars per share)	$ 2.25	$ 2.02
Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in dollars per share)	$ 2.22	$ 2.00
Anti-dilutive stock options excluded from the calculation of diluted earnings per share	0	659

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