v3.26.3
LONG-TERM DEBT - Additional Information (Details)
¥ in Billions, $ in Billions
1 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
May 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
JPY (¥)
Sep. 30, 2026
HKD ($)
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]                
Repayment of long-term debt       $ 1,150,000,000 $ 500,000,000      
Long-term debt, fair value $ 5,600,000,000     $ 5,600,000,000       $ 6,300,000,000
4.625% senior notes, due 2026 | Senior Notes                
Debt Instrument [Line Items]                
Repayment of long-term debt $ 400,000,000              
Long-term debt, interest rate (in percent) 4.625%     4.625%   4.625% 4.625%  
5.875% MGM China senior notes, due 2026 | Senior Notes                
Debt Instrument [Line Items]                
Repayment of long-term debt   $ 750,000,000            
Long-term debt, interest rate (in percent) 5.875% 5.875%   5.875%   5.875% 5.875%  
6.25% MGM China senior notes, due 2033 | Senior Notes                
Debt Instrument [Line Items]                
Long-term debt, interest rate (in percent) 6.25% 6.25%   6.25%   6.25% 6.25%  
Long-term debt, principal amount   $ 750,000,000            
5.25% MGM China senior notes due 2025 | Senior Notes                
Debt Instrument [Line Items]                
Repayment of long-term debt     $ 500,000,000          
Long-term debt, interest rate (in percent)     5.25%          
Revolving Credit Facility | Senior secured credit facility | Line of Credit                
Debt Instrument [Line Items]                
Line of credit facility $ 2,300,000,000     $ 2,300,000,000        
Line of credit facility drawn $ 0     $ 0        
Revolving Credit Facility | Senior secured yen credit facility | Line of Credit                
Debt Instrument [Line Items]                
Line of credit facility | ¥           ¥ 54.2    
Option for higher credit facility amount | ¥           ¥ 67.8    
Debt instrument, weighted average interest rate (in percent) 3.16%     3.16%   3.16% 3.16%  
Revolving Credit Facility | MGM China revolving credit facility | Line of Credit                
Debt Instrument [Line Items]                
Line of credit facility $ 3,000,000,000.0     $ 3,000,000,000.0        
Line of credit facility drawn             $ 23.4  
Debt instrument, weighted average interest rate (in percent) 4.95%     4.95%   4.95% 4.95%