Quarterly report pursuant to Section 13 or 15(d)

RELATED-PARTY TRANSACTIONS - Narrative (Details)

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RELATED-PARTY TRANSACTIONS - Narrative (Details) - USD ($)
shares in Millions
1 Months Ended 3 Months Ended
Oct. 30, 2020
Jul. 31, 2012
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Related Party Transaction [Line Items]          
Revenues recognized from related parties     $ 0 $ 0  
MGM | MGM          
Related Party Transaction [Line Items]          
Common stock, shares outstanding (shares)     16.6   16.6
MGM | MGM | Marketing Agreement          
Related Party Transaction [Line Items]          
Initial term   1 year      
Renewal term   2 years      
Automatic nonperformance renewal term   1 year      
Automatic nonperformance, non-exclusive renewal term   1 year      
Shares issued (shares)   19.2      
Percent of common stock issued   10.00%      
Related parties liabilities $ 20,000,000   $ 0    
MGM | MGM | MGM Amendment          
Related Party Transaction [Line Items]          
Payment term 2 years        
Reinvestment $ 20,000,000        
Agreed private placement 50,000,000        
Equity contribution in settlement of liability $ 20,000,000