EARNINGS PER SHARE (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator:
Net income attributable to MGM Resorts International	$ 187,072	$ 200,796	$ 404,548	$ 667,603
Adjustment related to redeemable noncontrolling interests	98	114	231	1,410
Net income attributable to common stockholders – basic	187,170	200,910	404,779	669,013
Net income attributable to common stockholders – diluted	$ 187,170	$ 200,910	$ 404,779	$ 669,013
Denominator:
Weighted-average common shares outstanding – basic (in shares)	311,179	361,050	315,837	367,535
Potential dilution from stock-based awards (in shares)	3,241	4,289	3,255	4,150
Weighted-average common and common equivalent shares – diluted (in shares)	314,420	365,339	319,092	371,685
Antidilutive stock-based awards excluded from the calculation of diluted earnings per share (in shares)	414	261	295	268