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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Line Items]
Effective income tax rate	(620.80%)	10.00%	33.90%	(8.00%)
Income tax expense	$ (7,276)	$ 19,046	$ 75,969	$ (42,623)
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			20,000
Income tax expense			$ 20,000
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