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Investments in and Advances to Unconsolidated Affiliates - Summary of Income Statement Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Net income (loss)	$ (601,971)	$ 6,104	$ (863,939)	$ 148,430
CityCenter
Schedule Of Equity Method Investments [Line Items]
Net revenues	126,673	320,352	394,989	993,215
Operating income (loss)	(29,254)	61,464	(100,491)	159,831
Net income (loss)	$ (45,267)	$ 33,082	$ (178,588)	$ 56,079

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