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Investments in and Advances to Unconsolidated Affiliates - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Apr. 30, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Schedule Of Equity Method Investments [Line Items]        
Distributions from unconsolidated affiliates     $ 426 $ 31,850
City Center Holdings L L C [Member]        
Schedule Of Equity Method Investments [Line Items]        
Dividend paid/declared $ 101,000 $ 64,000    
CityCenter Holdings LLC As Investee [Member]        
Schedule Of Equity Method Investments [Line Items]        
Distributions from unconsolidated affiliates, percentage 50.00% 50.00%    
Distributions from unconsolidated affiliates $ 51,000 $ 32,000    
MGP BREIT Venture [Member]        
Schedule Of Equity Method Investments [Line Items]        
Distributions from unconsolidated affiliates     $ 12,000