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Annual rent escalator cap after year fifteen.

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Annual rent escalator from year one through year fifteen.

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Business acquisition month of acquisition agreement.

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Common stock shares acquired.

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Initial annual rent.

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Issuance of operating partnership units.

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Minority interest ownership percentage in consolidated subsidiary.

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Organization disclosure.

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Partners capital account redemptions discount percentage.

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Partnership units redemption period.

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

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Percentage net revenue for lease.

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Percentage of issuance of operating partnership units to equity value of consolidated subsidiary.

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Reduction in lease rent.

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

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Waiver termination period.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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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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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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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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Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

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Organization - Additional Information (Detail) shares in Millions							1 Months Ended			3 Months Ended	12 Months Ended
	Feb. 14, 2020 USD ($) shares	Jan. 14, 2020 USD ($)	Nov. 22, 2019 shares	Nov. 15, 2019 USD ($)	Oct. 15, 2017	Sep. 11, 2017 shares	Apr. 30, 2019	Mar. 31, 2019	Jan. 31, 2019 shares	Mar. 31, 2019	Dec. 31, 2019 USD ($) Segment shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Aug. 31, 2018	Sep. 01, 2016 shares
Organization Disclosure [Line Items]
Cash received from sale of real estate assets											$ 4,151,499,000	$ 0	$ 0
Gain on sale of real estate assets											2,677,996,000	0	0
Assumption of debt											11,271,706,000	15,253,239,000
Payment for purchase of common shares											$ 1,031,534,000	1,283,333,000	$ 327,500,000
Number of reportable segments \| Segment											3
Hard Rock Rocksino Northfield Park [Member]
Organization Disclosure [Line Items]
Date of acquisition agreement											2018-07
Class A shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights											one vote per share
Non-Guarantor MGP Subsidiaries [Member] \| Class B shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights											Class B share, is entitled to an amount of votes representing a majority of the total voting power of MGP’s shares so long as the Company and its controlled affiliates’ (excluding MGP) aggregate beneficial ownership of the combined economic interests in MGP and the Operating Partnership does not fall below 30%.
MGM Growth Properties LLC [Member]
Organization Disclosure [Line Items]
Minimum ownership percentage required for majority voting interest											30.00%
Partnership interest					73.40%	72.30%	68.80%	69.80%	74.60%		63.70%
Percentage of minority interest											36.30%
MGM Growth Properties LLC [Member] \| Subsequent Event [Member]
Organization Disclosure [Line Items]
Cash proceeds for redemption		$ 1,400,000,000
Partnership units redemption period	24 months
Redemptions discount percentage		3.00%
Waiver termination period		24 months
MGM Growth Properties LLC [Member] \| Subsequent Event [Member] \| Maximum [Member]
Organization Disclosure [Line Items]
Cash proceeds for redemption	$ 1,400,000,000
MGM Growth Properties LLC [Member] \| Class A shares [Member]
Organization Disclosure [Line Items]
Partnership interest			63.70%						69.70%		63.70%
Issuance of operating partnership units \| shares			18.0			13.2			20.0		5.0
MGM China [Member]
Organization Disclosure [Line Items]
Ordinary shares acquired \| shares															188.1
Percentage ownership interest										56.00%
Grand Victoria [Member]
Organization Disclosure [Line Items]
Percentage ownership interest														50.00%
Total consideration received from sale of real estate assets												$ 45,000,000
CityCenter Holdings LLC As Investee [Member]
Organization Disclosure [Line Items]
Percentage ownership interest											50.00%	50.00%
Infinity World Development Corp [Member] \| CityCenter Holdings LLC As Investee [Member]
Organization Disclosure [Line Items]
Percentage ownership interest											50.00%
Blackstone Real Estate Income Trust [Member]
Organization Disclosure [Line Items]
Total consideration received from sale of real estate assets				$ 4,250,000,000
Percentage of equity interest in joint venture				5.00%
Cash received from sale of real estate assets				$ 4,200,000,000
Gain on sale of real estate assets				2,700,000,000
Guarantee obligation amount				$ 3,010,000,000.00							$ 3,010,000,000.00
Blackstone Real Estate Income Trust [Member] \| Subsequent Event [Member] \| Class A Shareholders [Member]
Organization Disclosure [Line Items]
Ordinary shares acquired \| shares	5.0
Payment for purchase of common shares	$ 150,000,000
MGP BREIT Venture [Member]
Organization Disclosure [Line Items]
Guarantee obligation amount											$ 3,000,000,000.0
MGP BREIT Venture [Member] \| Subsequent Event [Member]
Organization Disclosure [Line Items]
Partnership interest	50.10%
Percentage of minority interest	49.90%
Total consideration received from sale of real estate assets	$ 4,600,000,000
Cash received from sale of real estate assets	$ 2,500,000,000
Operating partnership equity interest	50.10%
Issuance of operating partnership units \| shares	3.0
Percentage of issuance of operating partnership units to equity value of consolidated subsidiary	5.00%
Initial annual rent	$ 292,000
Lease term	30 years
Lessee, operating lease, renewal term	10 years
Annual rent escalator from year one through year Fifteen	2.00%
Annual rent escalator after year fifteen	2.00%
Annual rent escalator cap after year fifteen	3.00%
Percentage net revenue for lease	3.50%
Lease term period	5 years
Lease restriction or covenant	Company to comply with certain financial covenants, which, if not met, will require the Company to maintain cash security or provide one or more letters of credit in favor of the landlord in an amount equal to the rent for the succeeding one-year period.
Reduction in lease annual rent due to modification	$ 133,000,000
MGP BREIT Venture [Member] \| Subsequent Event [Member] \| Term Loan B [Member]
Organization Disclosure [Line Items]
Assumption of debt	$ 1,300,000,000