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Investments in and Advances to Unconsolidated Affiliates - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Aug. 31, 2018
Schedule Of Equity Method Investments [Line Items]          
Dividend paid/declared   $ 271,288 $ 260,592 $ 252,014  
Distributions from unconsolidated affiliates   100,700 322,631 301,211  
CityCenter Holdings, LLC [Member]          
Schedule Of Equity Method Investments [Line Items]          
Dividend paid/declared   $ 180,000 625,000 $ 600,000  
Mandarin Oriental [Member] | CityCenter Holdings, LLC [Member]          
Schedule Of Equity Method Investments [Line Items]          
Consideration received from sale of discontinued operations         $ 214,000
Recognized gain on sale, unconsolidated affiliates and reversal of basis differences     133,000    
Mandarin Oriental [Member] | CityCenter Holdings LLC As Investee [Member]          
Schedule Of Equity Method Investments [Line Items]          
Recognized gain on sale, unconsolidated affiliates and reversal of basis differences     $ 12,000    
CityCenter Holdings LLC As Investee [Member]          
Schedule Of Equity Method Investments [Line Items]          
Distributions from unconsolidated affiliates   50.00% 50.00% 50.00%  
Distributions from unconsolidated affiliates   $ 90,000 $ 313,000 $ 300,000  
Percentage ownership interest   50.00% 50.00%    
Grand Victoria [Member]          
Schedule Of Equity Method Investments [Line Items]          
Consideration received from sale of discontinued operations     $ 45,000    
Recognized gain on sale, unconsolidated affiliates and reversal of basis differences $ 45,000   45,000    
Percentage ownership interest         50.00%
Grand Victoria [Member] | Cash [Member]          
Schedule Of Equity Method Investments [Line Items]          
Consideration received from sale of discontinued operations     $ 328,000