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Annual rent escalator after year ten.

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Annual rent escalator cap after year ten.

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Business combination retaining ownership interest.

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Lessee, Operating Lease, Annual Rent Expense

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Minority interest ownership percentage in consolidated subsidiary.

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Minority interest ownership percentage in unconsolidated affiliate.

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Number of integrated casino.

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Operating partnership units received.

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Organization disclosure.

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Percent interest in a less than hundred percent owned consolidated affiliate.

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Required minimum ownership percentage in beneficial ownership to entitle majority of voting power.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Amount of cash inflow for the sale of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.

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Organization - Additional Information (Detail) $ / shares in Units, $ in Millions				9 Months Ended
	Sep. 28, 2021 USD ($)	Sep. 27, 2021 USD ($) renewal_period	Aug. 04, 2021 USD ($) renewal_period $ / shares shares	Sep. 30, 2021 USD ($) segment property vote renewal_period	Dec. 31, 2020
Organization Disclosure [Line Items]
Number of reportable segments \| segment				3
City Center Holdings L L C
Organization Disclosure [Line Items]
Ownership interest acquired		50.00%
Cosmopolitan of Las Vegas
Organization Disclosure [Line Items]
Cash consideration		$ 1,625
BetMGM
Organization Disclosure [Line Items]
Percentage ownership interest				50.00%	50.00%
Entain plc \| BetMGM
Organization Disclosure [Line Items]
Percentage ownership interest				50.00%
Bellagio BREIT 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%
VICI Properties, Inc
Organization Disclosure [Line Items]
Shares newly issued ( in shares) \| shares			1.366
Operating partnership units received (in shares) \| shares			1.366
Cash consideration			$ 4,400
Ownership interest			$ 370
Lease agreement initial lease term			25 years
Number of renewal periods, exercisable at option \| renewal_period			3
Lease agreement renewal period			10 years
Annual rent			$ 860
Annual rent escalating from year one through year ten			2.00%
Annual rent escalator after year ten			2.00%
Annual rent escalator cap after year ten			3.00%
VICI Properties, Inc \| MGP
Organization Disclosure [Line Items]
Fixed exchange ratio (in dollars per share) \| $ / shares			$ 43
Cosmopolitan of Las Vegas
Organization Disclosure [Line Items]
Lease agreement initial lease term		30 years
Number of renewal periods, exercisable at option \| renewal_period		3
Lease agreement renewal period		10 years
Annual rent		$ 200
Annual rent escalating from year one through year ten		2.00%
Annual rent escalator cap after year ten		3.00%
Affiliated Entity \| Aria and Vdara
Organization Disclosure [Line Items]
Lease agreement initial lease term				30 years
Number of renewal periods, exercisable at option \| renewal_period				3
Lease agreement renewal period				10 years
Annual rent				$ 215
Affiliated Entity \| Aria and Vdara \| City Center Holdings L L C
Organization Disclosure [Line Items]
Cash consideration for sale of assets	$ 3,890
Subsidiary of Blackstone Real Estate Income Trust \| Bellagio BREIT Venture
Organization Disclosure [Line Items]
Percentage of ownership interest				95.00%
MGM China
Organization Disclosure [Line Items]
Percentage ownership interest				56.00%
Number of integrated casino \| property				2
Non-Guarantor MGP Subsidiaries \| Class A shares
Organization Disclosure [Line Items]
Common stock, number of votes per share \| vote				1
MGM Growth Properties LLC
Organization Disclosure [Line Items]
Minimum ownership percentage required for majority voting interest				30.00%
Partnership interest				41.60%
Percentage of minority interest				58.40%