v3.26.1
LONG-TERM DEBT - Additional Information (Details)
¥ in Billions, $ in Billions
1 Months Ended 6 Months Ended
May 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
JPY (¥)
Jun. 30, 2026
HKD ($)
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]              
Repayment of long-term debt     $ 750,000,000 $ 500,000,000      
Long-term debt, fair value     $ 6,100,000,000       $ 6,300,000,000
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%  
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%  
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%   5.25%      
Revolving Credit Facility | Senior secured credit facility | Line of Credit              
Debt Instrument [Line Items]              
Line of credit facility     $ 2,300,000,000        
Line of credit facility drawn     $ 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)     3.17%   3.17% 3.17%  
Revolving Credit Facility | MGM China revolving credit facility | Line of Credit              
Debt Instrument [Line Items]              
Line of credit facility     $ 3,000,000,000.0        
Line of credit facility drawn           $ 23.4  
Debt instrument, weighted average interest rate (in percent)     4.85%   4.85% 4.85%