BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding (Details) - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Numerator: | |||
| Net income attributable to MGM Resorts International | $ 205,862 | $ 746,558 | $ 1,142,180 |
| Adjustment related to redeemable noncontrolling interests | 5,228 | (2,906) | 2,128 |
| Net income available to common stockholders - basic | 211,090 | 743,652 | 1,144,308 |
| Net income available to common stockholders - diluted | $ 211,090 | $ 743,652 | $ 1,144,308 |
| Denominator: | |||
| Weighted-average common shares outstanding - basic (in shares) | 275,046 | 307,408 | 354,926 |
| Potential dilution from stock-based awards (in shares) | 2,229 | 2,824 | 3,701 |
| Weighted-average common and common equivalent shares - diluted (in shares) | 277,275 | 310,232 | 358,627 |
| X | ||||||||||
- Definition Adjustment related to redeemable noncontrolling interests. No definition available.
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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