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STOCKHOLDERS’ EQUITY - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands						1 Months Ended			2 Months Ended	12 Months Ended
	Mar. 15, 2021	Dec. 02, 2020	May 18, 2020	Feb. 14, 2020	Feb. 13, 2020	Feb. 28, 2022	Mar. 31, 2021	Feb. 29, 2020	Feb. 24, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Feb. 28, 2023	Mar. 31, 2022	May 31, 2018
Class of Stock [Line Items]
Cash proceeds for redemption											$ 50,828	$ 22,292
Common stock repurchases, value										$ 2,775,217	$ 1,753,509	$ 353,720
Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)										76,404,000	43,088,000	10,861,000
Common stock repurchases, value										$ 764	$ 430	$ 109
Share Repurchase Program One | Common Stock
Class of Stock [Line Items]
Authorized amount of stock repurchase											$ 2,000,000				$ 2,000,000
Share Repurchase Program Two | Common Stock
Class of Stock [Line Items]
Authorized amount of stock repurchase								$ 3,000,000
Share Repurchase Program Three | Common Stock
Class of Stock [Line Items]
Authorized amount of stock repurchase														$ 2,000,000
Repurchase of common stock, remaining amount										$ 475,000
Share Repurchase Program | Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)						76,000,000					43,000,000	11,000,000
Stock repurchased, average cost (in dollars per share)						$ 36.32					$ 40.70	$ 32.57
Common stock repurchases, value						$ 2,800,000					$ 1,800,000	$ 354,000
Subsequent Event | Share Repurchase Program Four | Common Stock
Class of Stock [Line Items]
Authorized amount of stock repurchase													$ 2,000,000
Subsequent Event | Share Repurchase Program | Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)									6,000,000
Stock repurchased, average cost (in dollars per share)									$ 38.12
Common stock repurchases, value									$ 210,000
MGM Grand Las Vegas and Mandalay Bay
Class of Stock [Line Items]
Issuance of operating partnership units (in shares)				3,000,000				3,000,000
Corvex Management LP | Share Repurchase Program | Common Stock
Class of Stock [Line Items]
Common stock repurchases (in shares)						4,500,000
Stock repurchased, average cost (in dollars per share)						$ 45.00
Common stock repurchases, value						$ 202,500
MGM Growth Properties LLC
Class of Stock [Line Items]
Redemptions discount (in percent)				3.00%
Cash proceeds for redemption				$ 1,400,000
MGM Growth Properties LLC | Operating Partnership
Class of Stock [Line Items]
Noncontrolling interest (in percent)	42.10%		56.70%	60.30%	61.20%		42.10%	60.60%				53.00%
Operating partnership units, redeemed (in shares)		24,000,000	30,000,000				37,000,000
Cash proceeds for redemption		$ 700,000	$ 700,000				$ 1,200,000
Partner capital account units redeemed for cash (in shares)							15,000,000
Operating partnership redemption units for class A offering (in shares)							22,000,000
Class A shares | MGM Growth Properties LLC
Class of Stock [Line Items]
New issuance of shares (in shares)	22,000,000			5,000,000	13,000,000						3,000,000
Class A shares | MGM Growth Properties LLC | Operating Partnership
Class of Stock [Line Items]
Noncontrolling interest (in percent)											41.60%

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