SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net revenue
Total net revenue	$ 4,327,375	$ 3,942,207	$ 8,710,845	$ 7,815,503
Other operating income (expense)
Preopening and start-up expenses	(855)	(149)	(1,950)	(288)
Property transactions, net	(16,477)	(5,614)	(33,631)	390,462
Depreciation and amortization	(191,976)	(203,503)	(388,538)	(407,004)
Triple-net operating lease and ground lease rent expense	(564,186)	(564,158)	(1,128,525)	(1,134,713)
Income from unconsolidated affiliates related to real estate ventures	2,667	2,695	5,368	5,390
Operating income	425,656	371,378	884,034	1,102,217
Non-operating income (expense)
Interest expense, net of amounts capitalized	(112,739)	(111,945)	(222,776)	(242,245)
Non-operating items from unconsolidated affiliates	1,762	(441)	1,626	(1,625)
Other, net	(43,431)	23,693	(48,237)	70,000
Non-operating income (expense)	(154,408)	(88,693)	(269,387)	(173,870)
Income before income taxes	271,248	282,685	614,647	928,347
Benefit (provision) for income taxes	11,554	(39,141)	(32,119)	(204,920)
Net income	282,802	243,544	582,528	723,427
Less: Net income attributable to noncontrolling interests	(95,730)	(42,748)	(177,980)	(55,824)
Net income attributable to MGM Resorts International	187,072	200,796	404,548	667,603
Casino
Net revenue
Total net revenue	2,212,759	1,951,382	4,453,854	3,833,810
Rooms
Net revenue
Total net revenue	898,998	815,323	1,855,399	1,663,811
Food and beverage
Net revenue
Total net revenue	802,138	743,236	1,571,541	1,465,367
Entertainment, retail and other
Net revenue
Total net revenue	401,605	420,711	805,996	830,289
Reportable Segments
Net revenue
Total net revenue	4,150,791	3,813,705	8,371,316	7,553,292
Adjusted Property EBITDAR
Reportable segment Adjusted Property EBITDAR	1,364,530	1,279,685	2,767,606	2,597,617
Reportable Segments | Las Vegas Strip Resorts
Net revenue
Total net revenue	2,205,462	2,146,650	4,460,491	4,322,802
Adjusted Property EBITDAR
Reportable segment Adjusted Property EBITDAR	782,289	776,529	1,610,077	1,612,338
Reportable Segments | Regional Operations
Net revenue
Total net revenue	927,138	926,100	1,836,617	1,871,943
Adjusted Property EBITDAR
Reportable segment Adjusted Property EBITDAR	288,378	293,767	562,480	606,942
Reportable Segments | MGM China
Net revenue
Total net revenue	1,018,191	740,955	2,074,208	1,358,547
Adjusted Property EBITDAR
Reportable segment Adjusted Property EBITDAR	293,863	209,389	595,049	378,337
Reportable Segments | Casino | Las Vegas Strip Resorts
Net revenue
Total net revenue	484,739	492,212	982,287	992,775
Reportable Segments | Casino | Regional Operations
Net revenue
Total net revenue	684,037	679,430	1,369,005	1,396,407
Reportable Segments | Casino | MGM China
Net revenue
Total net revenue	891,241	669,658	1,811,289	1,224,930
Reportable Segments | Rooms | Las Vegas Strip Resorts
Net revenue
Total net revenue	767,294	706,715	1,594,547	1,458,406
Reportable Segments | Rooms | Regional Operations
Net revenue
Total net revenue	78,532	76,929	144,465	144,233
Reportable Segments | Rooms | MGM China
Net revenue
Total net revenue	53,171	31,679	116,386	61,172
Reportable Segments | Food and beverage | Las Vegas Strip Resorts
Net revenue
Total net revenue	624,241	598,771	1,223,522	1,181,398
Reportable Segments | Food and beverage | Regional Operations
Net revenue
Total net revenue	111,906	111,491	219,659	223,370
Reportable Segments | Food and beverage | MGM China
Net revenue
Total net revenue	65,991	32,973	128,360	60,598
Reportable Segments | Entertainment, retail and other | Las Vegas Strip Resorts
Net revenue
Total net revenue	329,188	348,952	660,135	690,223
Reportable Segments | Entertainment, retail and other | MGM China
Net revenue
Total net revenue	7,788	6,645	18,173	11,847
Reportable Segments | Entertainment, retail and other, and reimbursed costs | Regional Operations
Net revenue
Total net revenue	52,663	58,250	103,488	107,933
Corporate and other
Net revenue
Total net revenue	176,584	128,502	339,529	262,211
Other operating income (expense)
Corporate and other, net	$ (168,047)	$ (137,578)	$ (336,296)	$ (349,247)