CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Total MGM Resorts International Stockholders’ Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2022			379,088,000
Beginning balance at Dec. 31, 2022	$ 5,210,123	$ 4,831,529	$ 3,791	$ 0	$ 4,794,239	$ 33,499	$ 378,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	723,089	667,603			667,603		55,486
Currency translation adjustment	(6,089)	(4,313)				(4,313)	(1,776)
Stock-based compensation	35,121	33,822		33,822			1,299
Issuance of common stock pursuant to stock-based compensation awards (in shares)			205,000
Issuance of common stock pursuant to stock-based compensation awards	(2,564)	(2,564)	$ 2	(2,566)
Distributions to noncontrolling interest owners	(14,090)						(14,090)
Issuance of restricted stock units	1,701	1,701		1,701
Repurchases of common stock (in shares)			(26,503,000)
Repurchases of common stock	(1,113,207)	(1,113,207)	$ (265)	(33,688)	(1,079,254)
Adjustment of redeemable noncontrolling interest to redemption value	1,411	1,411		1,411
Other	(128)	191		(680)		871	(319)
Ending balance (in shares) at Jun. 30, 2023			352,790,000
Ending balance at Jun. 30, 2023	4,835,367	4,416,173	$ 3,528	0	4,382,588	30,057	419,194
Beginning balance (in shares) at Mar. 31, 2023			367,241,000
Beginning balance at Mar. 31, 2023	5,222,103	4,839,658	$ 3,672	0	4,799,178	36,808	382,445
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	243,373	200,796			200,796		42,577
Currency translation adjustment	(6,040)	(6,751)				(6,751)	711
Stock-based compensation	11,230	10,594		10,594			636
Issuance of common stock pursuant to stock-based compensation awards (in shares)			132,000
Issuance of common stock pursuant to stock-based compensation awards	(1,223)	(1,223)	$ 1	(1,224)
Distributions to noncontrolling interest owners	(6,854)						(6,854)
Repurchases of common stock (in shares)			(14,583,000)
Repurchases of common stock	(626,338)	(626,338)	$ (145)	(8,807)	(617,386)
Adjustment of redeemable noncontrolling interest to redemption value	114	114		114
Other	(998)	(677)		(677)			(321)
Ending balance (in shares) at Jun. 30, 2023			352,790,000
Ending balance at Jun. 30, 2023	$ 4,835,367	4,416,173	$ 3,528	0	4,382,588	30,057	419,194
Beginning balance (in shares) at Dec. 31, 2023	326,550,141		326,550,000
Beginning balance at Dec. 31, 2023	$ 4,334,145	3,811,170	$ 3,266	0	3,664,008	143,896	522,975
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	582,220	404,548			404,548		177,672
Currency translation adjustment	(106,268)	(106,513)				(106,513)	245
Stock-based compensation	39,030	37,623		37,623			1,407
Issuance of common stock pursuant to stock-based compensation awards (in shares)			112,000
Issuance of common stock pursuant to stock-based compensation awards	(1,758)	(1,758)		(1,758)
Distributions to noncontrolling interest owners	(94,289)						(94,289)
Repurchases of common stock (in shares)			(21,697,000)
Repurchases of common stock	(924,291)	(924,291)	$ (216)	(27,531)	(896,544)
Adjustment of redeemable noncontrolling interest to redemption value	231	231			231
Other	$ (14,875)	(8,334)		(8,334)			(6,541)
Ending balance (in shares) at Jun. 30, 2024	304,964,825		304,965,000
Ending balance at Jun. 30, 2024	$ 3,814,145	3,212,676	$ 3,050	0	3,172,243	37,383	601,469
Beginning balance (in shares) at Mar. 31, 2024			314,915,000
Beginning balance at Mar. 31, 2024	4,027,277	3,456,764	$ 3,149	0	3,393,805	59,810	570,513
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	282,696	187,072			187,072		95,624
Currency translation adjustment	(21,078)	(22,427)				(22,427)	1,349
Stock-based compensation	12,429	11,729		11,729			700
Issuance of common stock pursuant to stock-based compensation awards (in shares)			44,000
Issuance of common stock pursuant to stock-based compensation awards	(597)	(597)		(597)
Distributions to noncontrolling interest owners	(61,106)						(61,106)
Repurchases of common stock (in shares)			(9,994,000)
Repurchases of common stock	(412,809)	(412,809)	$ (99)	(3,978)	(408,732)
Adjustment of redeemable noncontrolling interest to redemption value	98	98			98
Other	$ (12,765)	(7,154)		(7,154)			(5,611)
Ending balance (in shares) at Jun. 30, 2024	304,964,825		304,965,000
Ending balance at Jun. 30, 2024	$ 3,814,145	$ 3,212,676	$ 3,050	$ 0	$ 3,172,243	$ 37,383	$ 601,469