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Investments in and Advances to Unconsolidated Affiliates - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Apr. 30, 2019
Mar. 31, 2019
May 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Schedule Of Equity Method Investments [Line Items]          
Distributions from unconsolidated affiliates       $ 90,000 $ 200,000
City Center Holdings L L C [Member]          
Schedule Of Equity Method Investments [Line Items]          
Dividend paid/declared $ 116,000 $ 64,000 $ 400,000    
CityCenter Holdings LLC As Investee [Member]          
Schedule Of Equity Method Investments [Line Items]          
Distributions from unconsolidated affiliates, percentage 50.00% 50.00% 50.00%    
Distributions from unconsolidated affiliates $ 58,000 $ 32,000 $ 200,000