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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 26, 2022 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2021
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Effective income tax rate | 27.80% | (22.40%) |  | (19.60%) | (2.90%) |  |
Cash tax payments |  |  |  | $ 0 |  |  |
Marina District Development Company, LLC [Member] |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Unrecognized tax benefits reversed | $ 20,000,000 |  |  | $ 30,000,000 |  |  |
MGM Grand Paradise SA [Member] |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Complementary tax rate on distributions of gaming profits (as a percent) |  |  |  | 12.00% |  |  |
Annual fee payments |  |  |  |  |  | $ 1,400,000 |
Accrued amount | 0 |  |  | $ 0 |  |  |
MGM Grand Paradise SA [Member] | Scenario Forecast [Member] |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Annual fee payments |  |  | $ 900,000 |  |  |  | $ 1,900,000
Macau [Member] |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Decrease in foreign tax credit carry forward valuation allowance | $ 2,000,000 |  |  | $ 5,000,000 |  |  |
Special gaming tax rate |  |  |  | 35.00% |  |  |

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