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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 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stockholders Equity Note [Line Items]
Net income attributable to MGM Resorts International	$ 746,558	$ 1,142,180	$ 1,473,093
Transfers from/(to) noncontrolling interest:
Deconsolidation of MGP			(3,173,626)
Other	0	0	(120)
Net transfers from noncontrolling interest	0	0	10,964
Change from net income attributable to MGM Resorts International and transfers to noncontrolling interest	746,558	1,142,180	1,484,057
AOCI Including Portion Attributable to Noncontrolling Interest
Transfers from/(to) noncontrolling interest:
Deconsolidation of MGP	$ 0	$ 0	$ 11,084

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