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Income Taxes - Additional Information (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Jun. 26, 2022 | Sep. 30, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Dec. 31, 2021
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Effective income tax rate provision (benefit) | 17.40% | (11.30%) |  | 16.90% |  | (8.90%) |
Income tax expense | $ 282,135,000 | $ (76,734,000) |  | $ 222,263,000 |  | $ (84,668,000) |
Cash tax payments |  |  |  | 0 |  |  |
Macau Taxing Authority |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Decrease in foreign tax credit carry forward valuation allowance | 10,000,000 |  |  | $ 5,000,000 |  |  |
Special gaming tax rate |  |  |  | 35.00% |  |  |
Income tax expense | $ 3,000,000 |  |  | $ 3,000,000 | $ 1,000,000 |  |
Marina District Development Company, LLC |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Unrecognized tax benefits reversed |  |  |  | $ 30,000,000 |  |  |
MGM Grand Paradise SA | Macau Taxing Authority |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Complementary tax rate on distributions of gaming profits |  |  |  | 12.00% |  |  |
Annual fee payments |  |  |  |  | $ 1,000,000 |  |
MGM Grand Paradise SA | Scenario Forecast | Macau Taxing Authority |  |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |  |
Annual fee payments |  |  | $ 1,000,000 |  |  |  | $ 2,000,000

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