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STOCKHOLDERS’ EQUITY - Summary of Net Income Attributable to and Transfers from Noncontrolling Interest, Which Shows Effects of Changes in Company's Ownership Interest in a Subsidiary (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Stockholders Equity Note [Line Items]      
Net income (loss) attributable to MGM Resorts International $ 1,473,093 $ 1,254,370 $ (1,032,724)
Transfers from/(to) noncontrolling interest:      
Net transfers from noncontrolling interest 10,964 274,771 149,145
Redemption of MGP OP units 0 176,659 92,632
Deconsolidation of MGP (3,173,626)    
Other (120) (5,062) (1,759)
Change from net income (loss) attributable to MGM Resorts International and transfers to noncontrolling interest 1,484,057 1,529,141 (883,579)
AOCI Including Portion Attributable to Noncontrolling Interest      
Transfers from/(to) noncontrolling interest:      
Deconsolidation of MGP 11,084 0 0
MGM Growth Properties LLC | Class A shares      
Transfers from/(to) noncontrolling interest:      
MGP Class A share issuances 0 103,174 64,834
MGM Grand Las Vegas and Mandalay Bay      
Transfers from/(to) noncontrolling interest:      
Net transfers from noncontrolling interest $ 0 $ 0 $ (6,562)