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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Total assets $ 38,650,005 $ 40,899,116
Investments in and advances to unconsolidated affiliates $ 1,008,144 967,044
Percentage of ownership interest 100.00%  
Fair value of equity investment $ 81,000  
Food and Beverage Revenue    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Lease revenue 14,000 4,000
Entertainment Retail and Other Revenue    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Lease revenue $ 26,000 $ 16,000
Bellagio Blackstone Real Estate Income Trust    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Percentage of ownership interest 5.00%  
Investments in and advances to unconsolidated affiliates $ 58,000  
MGM Growth Properties LLC    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Total assets 10,400,000  
Total liabilities $ 5,000,000