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Income Per Share of Common Stock - Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding (Detail) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Numerator: |  |  |  |
Net income attributable to MGM Resorts International | $ 43,405 | $ 123,777 | $ 74,702 | $ 347,221
Adjustment related to redeemable noncontrolling interests | 992 | (5,986) | (2,832) | (10,584)
Net income available to common stockholders - basic | 44,397 | 117,791 | 71,870 | 336,637
Potentially dilutive effect due to MGP and MGM China stock compensation plans | (35) | (26) | (86) | (158)
Net income attributable to common stockholders - diluted | $ 44,362 | $ 117,765 | $ 71,784 | $ 336,479
Denominator: |  |  |  |
Weighted-average common shares outstanding - basic | 532,365 | 548,433 | 533,286 | 556,586
Potential dilution from share-based awards | 3,052 | 5,906 | 3,170 | 6,522
Weighted-average common and common equivalent shares - diluted | 535,417 | 554,339 | 536,456 | 563,108
Antidilutive share-based awards excluded from the calculation of diluted earnings per share | 2,411 | 2,441 | 2,170 | 1,305

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