v3.25.2
Cover Page - shares
6 Months Ended
Jun. 30, 2025
Jul. 28, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-10362  
Entity Registrant Name MGM Resorts International  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 88-0215232  
Entity Address, Address Line One 3600 Las Vegas Boulevard South  
Entity Address, City or Town Las Vegas  
Entity Address, State or Province NV  
Entity Address, Postal Zip Code 89109  
City Area Code 702  
Local Phone Number 693-7120  
Title of 12(b) Security Common stock (Par Value $0.01)  
Trading Symbol MGM  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   272,191,042
Amendment Flag false  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Entity Central Index Key 0000789570  
Current Fiscal Year End Date --12-31