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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Income Tax Disclosure [Line Items] |  |  |  |
Effective income tax rate | 13.30% | 14.40% | 36.90% | (17.90%)
Income tax expense | $ 11,734 | $ 23,710 | $ 83,245 | $ (61,669)
Empire City [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Increase in deferred tax liabilities |  |  | 10,000 |
Income tax expense |  |  | 10,000 |
Macau [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Increase in valuation allowance on foreign tax credit |  |  | 10,000 |
Income tax expense |  |  | $ 10,000 |
Special gaming tax rate |  |  | 35.00% |
Macau [Member] | MGM Grand Paradise SA [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Macau's complementary tax rate on distributions of gaming profits (as a percent) |  |  | 12.00% |
Increase in deferred tax liabilities |  |  | $ 35,000 |

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