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Earnings Per Share - Schedule of Shares used in Calculation of Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Numerator:        
Net income attributable to Wynn Resorts, Limited - basic $ 111,943 $ 105,184 $ 256,159 $ 117,516
Assumed conversion of WML Convertible Bonds (10,586) (10,629) 0 (22,600)
Net income attributable to Wynn Resorts, Limited - diluted $ 101,357 $ 94,555 $ 256,159 $ 94,916
Denominator:        
Weighted average common shares outstanding (shares) 110,937 112,889 110,980 112,821
Potential dilutive effect of stock options and restricted stock (shares) 238 309 242 322
Weighted average common and common equivalent shares outstanding (shares) 111,175 113,198 111,222 113,143
Net income (loss) attributable to Wynn Resorts, Limited per common share, basic (in usd per share) $ 1.01 $ 0.93 $ 2.31 $ 1.04
Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in usd per share) $ 0.91 $ 0.84 $ 2.30 $ 0.84
Antidilutive securities excluded from computation of earnings per share (shares) 339 321 325 344