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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