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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, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Numerator: |  |  |  |
Net income (loss) attributable to MGM Resorts International | $ (857,257) | $ 43,405 | $ (50,388) | $ 74,702
Adjustment related to redeemable noncontrolling interests | 32,182 | 992 | 40,251 | (2,832)
Net income (loss) available to common stockholders - basic | (825,075) | 44,397 | (10,137) | 71,870
Potentially dilutive effect due to MGP and MGM China stock compensation plans | (20) | (35) | 0 | (86)
Net income (loss) attributable to common stockholders - diluted | $ (825,095) | $ 44,362 | $ (10,137) | $ 71,784
Denominator: |  |  |  |
Weighted-average common shares outstanding - basic | 493,456 | 532,365 | 494,434 | 533,286
Potential dilution from share-based awards | 0 | 3,052 | 0 | 3,170
Weighted-average common and common equivalent shares - diluted | 493,456 | 535,417 | 494,434 | 536,456
Antidilutive share-based awards excluded from the calculation of diluted earnings per share | 5,370 | 2,411 | 4,623 | 2,170

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