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Organization (Detail) $ / shares in Units, $ in Thousands										1 Months Ended		12 Months Ended
	Dec. 13, 2021 USD ($)	Sep. 28, 2021 USD ($)	Sep. 26, 2021 USD ($) agreement	Aug. 04, 2021 USD ($) renewal_period $ / shares shares	Dec. 02, 2020 USD ($) $ / shares shares	May 18, 2020 USD ($) $ / shares shares	Feb. 14, 2020 USD ($) shares	Nov. 22, 2019 shares	Nov. 15, 2019 USD ($)	Mar. 31, 2021 USD ($) shares	Feb. 29, 2020 shares	Dec. 31, 2021 USD ($) property vote agreement segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 27, 2021	Sep. 01, 2016 shares
Organization Disclosure [Line Items]
Gain on sale of real estate assets												$ 0	$ 1,491,945	$ 2,677,996
Long term debt												12,860,966	12,480,586
Payment for purchase of common shares												1,753,509	353,720	$ 1,031,534
Operating partnership units, redeemed | shares					24,000,000	30,000,000
Cash proceeds for redemption					$ 700,000	$ 700,000						$ 50,828	$ 22,292
Operating partnership redemption per unit | $ / shares					$ 29.78	$ 23.10
Number of integrated casino | property												2
Number of reportable segments | segment												3
BetMGM
Organization Disclosure [Line Items]
Percentage ownership interest												50.00%
The Mirage
Organization Disclosure [Line Items]
Reverse contract termination fee	$ 322,500
Proceeds from divestiture of businesses	1,075,000
Entain | BetMGM
Organization Disclosure [Line Items]
Percentage ownership interest												50.00%
CityCenter Holdings, LLC
Organization Disclosure [Line Items]
Operating partnership equity interest															50.00%
Percentage of membership interest acquired															50.00%
Cosmopolitan of Las Vegas
Organization Disclosure [Line Items]
Total purchase price			$ 1,625,000
Reverse contract termination fee			$ 500,000
Bellagio B R E I T Venture
Organization Disclosure [Line Items]
Percentage of minority interest												5.00%
MGP BREIT Venture
Organization Disclosure [Line Items]
Partnership interest												50.10%
Percentage of minority interest												49.90%
Total consideration received from sale of real estate assets							$ 4,600,000
Cash received from sale of real estate assets							$ 2,500,000
Guarantee obligation amount												$ 3,000,000
Issuance of operating partnership units | shares							3,000,000				3,000,000
Percentage of issuance of operating partnership units to equity value of consolidated subsidiary							5.00%
Reduction in lease annual rent due to modification							$ 133,000
MGP BREIT Venture | Term Loan B
Organization Disclosure [Line Items]
Long term debt							$ 1,300,000
MGP BREIT Venture | MGP BREIT Venture
Organization Disclosure [Line Items]
Operating partnership equity interest							50.10%
Blackstone Real Estate Income Trust
Organization Disclosure [Line Items]
Percentage of ownership interest									5.00%
Total consideration received from sale of real estate assets									$ 4,250,000
Cash received from sale of real estate assets									4,200,000
Gain on sale of real estate assets									2,700,000
Guarantee obligation amount									$ 3,010,000			$ 3,010,000
Blackstone Real Estate Income Trust | Class A Shareholders
Organization Disclosure [Line Items]
Ordinary shares acquired | shares							5,000,000
Payment for purchase of common shares							$ 150,000
MGM Grand Las Vegas
Organization Disclosure [Line Items]
Total consideration received from sale of real estate assets							2,500,000
Gain on sale of real estate assets							1,700,000
Carrying value of real estate assets							733,000
Selling costs							27,000
Mandalay Bay
Organization Disclosure [Line Items]
Total consideration received from sale of real estate assets							2,100,000
Gain on sale of real estate assets							(252,000)
Carrying value of real estate assets							2,300,000
Selling costs							$ 10,000
V I C I Properties Inc
Organization Disclosure [Line Items]
Stock issued during period, issued for services (in shares) | shares				1.366
Operating partnership units received | shares				1.366
Total purchase price				$ 4,400,000
Business combination retaining ownership interest				$ 370,000
Lease agreement Initial lease term				25 years
Number of renewal periods, exercisable at option | renewal_period				3
Annual rent escalating from year one through year ten				2.00%
Lease agreement renewal period				10 years
Lessee, operating lease, annual rent expense				$ 860,000
Annual rent escalator after year ten				2.00%
Annual rent escalator cap after year ten				3.00%
Decrease in annual rent payment	$ 90,000
V I C I Properties Inc | MGP
Organization Disclosure [Line Items]
Business acquisition, share price | $ / shares				$ 43
Affiliated Entity | Aria and Vdara
Organization Disclosure [Line Items]
Lease agreement Initial lease term												30 years
Number of renewal periods, exercisable at option | agreement												3
Lease agreement renewal period												10 years
Lessee, operating lease, annual rent expense												$ 215,000
Annual rent escalator cap after year fifteen												3.00%
Affiliated Entity | CityCenter Holdings, LLC | Aria and Vdara
Organization Disclosure [Line Items]
Proceeds from sale of other property, plant, and equipment		$ 3,890,000
Cosmopolitan of Las Vegas
Organization Disclosure [Line Items]
Lease agreement Initial lease term			30 years
Number of renewal periods, exercisable at option | agreement			3
Lease agreement renewal period			10 years
Lessee, operating lease, annual rent expense			$ 200,000
Annual rent escalator cap after year ten			3.00%
Annual rent escalator cap after year fifteen			2.00%
Annual rent escalating from year one through year fifteen			2.00%
Subsidiary Of Blackstone Real Estate Income Trust | Bellagio B R E I T Venture
Organization Disclosure [Line Items]
Percentage of ownership interest												95.00%
MGM Growth Properties LLC
Organization Disclosure [Line Items]
Minimum ownership percentage required for majority voting interest												30.00%
Partnership interest												41.50%
Percentage of minority interest												58.50%
Redemptions discount percentage							3.00%
Cash proceeds for redemption							$ 1,400,000
MGM Growth Properties LLC | Operating Partnership
Organization Disclosure [Line Items]
Operating partnership units, redeemed | shares					24,000,000	30,000,000				37,000,000
Cash proceeds for redemption					$ 700,000	$ 700,000				$ 1,200,000
MGM Growth Properties LLC | Class A shares
Organization Disclosure [Line Items]
Issuance of operating partnership units | shares								18,000,000
MGM China
Organization Disclosure [Line Items]
Ordinary shares acquired | shares																188,100,000
Percentage ownership interest												56.00%
Non-Guarantor MGP Subsidiaries | Class A shares
Organization Disclosure [Line Items]
Number of votes per share | vote												1

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