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STOCKHOLDERS’ EQUITY - Schedule of Changes in Accumulated Other Comprehensive Loss Attributable to MGM Resorts International by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance $ 5,210,123 $ 10,976,766
Other comprehensive income 822 18,065
Ending balance 5,222,103 $ 9,879,624
Currency Translation Adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 34,435  
Other comprehensive loss before reclassifications (49)  
Amounts reclassified from accumulated other comprehensive income to "Other, net" 0  
Other comprehensive income (49)  
Other comprehensive loss attributable to noncontrolling interest 2,487  
Ending balance 36,873  
Other    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance (936)  
Other comprehensive loss before reclassifications 0  
Amounts reclassified from accumulated other comprehensive income to "Other, net" 871  
Other comprehensive income 871  
Other comprehensive loss attributable to noncontrolling interest 0  
Ending balance (65)  
Total    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Beginning balance 33,499  
Other comprehensive loss before reclassifications (49)  
Amounts reclassified from accumulated other comprehensive income to "Other, net" 871  
Other comprehensive income 822  
Other comprehensive loss attributable to noncontrolling interest 2,487  
Ending balance $ 36,808