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Commitments and Contingencies - Additional Information (Detail)
 2 Months Ended 3 Months Ended
Mar. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
Loss Contingencies [Line Items]    
Statute of limitation toll date May 15, 2020  
Insurance coverage available to fund litigation liabilities $ 751,000,000 $ 751,000,000
Percentage of participation to increase the amount for settlement to Claimants 100.00%  
MGM Grand Paradise SA [Member] | Extension Agreement [Member]    
Loss Contingencies [Line Items]    
Bank guarantee $ 101,000,000 $ 101,000,000
Guarantee term   In connection with the Extension Agreement, MGM Grand Paradise is required to provide a bank guarantee in an amount not less than $101 million to the government of Macau within three months from the date of signing of the Extension Agreement to warrant the fulfillment of labor debts upon the expiration of the Extension Agreement in June 2022
MGP Senior Credit Facility [Member]    
Loss Contingencies [Line Items]    
Credit facility outstanding 0 $ 0
Senior Credit Facility [Member]    
Loss Contingencies [Line Items]    
Credit facility outstanding 12,000,000 12,000,000
Letters of credit [Member] | MGP Senior Credit Facility [Member]    
Loss Contingencies [Line Items]    
Credit facility amount 75,000,000 75,000,000
Letters of credit [Member] | MGM China Credit Facility [Member] | Standby Letters of Credit [Member]    
Loss Contingencies [Line Items]    
Credit facility amount 100,000,000 100,000,000
Letters of credit [Member] | Senior Credit Facility [Member]    
Loss Contingencies [Line Items]    
Credit facility amount 250,000,000 250,000,000
Minimum [Member]    
Loss Contingencies [Line Items]    
Estimated amount for settlement to Claimants 735,000,000 735,000,000
Maximum [Member]    
Loss Contingencies [Line Items]    
Estimated amount for settlement to Claimants $ 800,000,000 $ 800,000,000