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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Total assets $ 40,899,116,000 $ 36,494,934,000  
Investments in and advances to unconsolidated affiliates $ 967,044,000 1,447,043,000  
Percentage of ownership interest 100.00%    
Impairment charges $ 0 0 $ 0
Advertising expense 121,000,000 88,000,000 195,000,000
Equity securities, FV-NI, current 66,000,000    
Food and Beverage Revenue      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Lease revenue 43,000,000 24,000,000 53,000,000
Entertainment Retail and Other Revenue      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Lease revenue $ 85,000,000 $ 60,000,000 $ 89,000,000
Accounts Receivable | Customer Concentration | Asia      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Percentage of gross casino accounts receivable 43.00% 52.00%  
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 $ 58,000,000    
MGM Growth Properties LLC      
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Total assets 10,400,000,000    
Total liabilities $ 5,100,000,000