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Income Per Share of Common Stock (Tables) | 6 Months Ended
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Jun. 30, 2020
Earnings Per Share [Abstract] |
Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding | Diluted weighted-average common and common equivalent shares include adjustments for potential dilution of share-based awards outstanding under the Company’s stock compensation plan.
| Three Months Ended |  |  | Six Months Ended |
| June 30, |  |  | June 30, |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
| (In thousands) |
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 | ) |  |  | — |  |  |  | (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 |  | — |  |  |  | 3,052 |  |  |  | — |  |  |  | 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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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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