MGM Growth Properties Operating Partnership (MGP) 10-Q 9 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Nov. 02, 2017
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	MGP
Entity Registrant Name	MGM Growth Properties LLC
Entity Central Index Key	1,656,936
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Class A Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		70,896,795
Class B Share
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1
MGP Operating Partnership
Document Information [Line Items]
Entity Registrant Name	MGM Growth Properties Operating Partnership LP
Entity Central Index Key	1,691,299
Entity Filer Category	Non-accelerated Filer

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Real estate investments, net	$ 8,911,648	$ 9,079,678
Cash and cash equivalents	1,138,801	360,492
Tenant and other receivables, net	6,104	9,503
Prepaid expenses and other assets	8,890	10,906
Above market lease, asset	44,981	46,161
Total assets	10,110,424	9,506,740
Liabilities
Debt, net	3,940,803	3,621,942
Due to MGM Resorts International and affiliates	524	166
Accounts payable, accrued expenses and other liabilities	12,281	10,478
Above market lease, liability	47,291	47,957
Accrued interest	27,393	26,137
Dividend and distribution payable	101,222	94,109
Deferred revenue	115,195	72,322
Deferred income taxes, net	25,368	25,368
Total liabilities	4,270,077	3,898,479
Commitments and contingencies (Note 12)
Partners' capital
General partner	0	0
Limited partners: issued and outstanding 256,258,931 and 242,862,136 Operating Partnership units	5,840,347	5,608,261
Total partners' capital	5,840,347	5,608,261
Shareholders’ equity
Additional paid-in capital	1,697,014	1,363,130
Accumulated deficit	(73,893)	(29,758)
Accumulated other comprehensive income (loss)	(308)	445
Noncontrolling interest	4,217,534	4,274,444
Total shareholders’ equity	5,840,347	5,608,261
Total liabilities and shareholders’ equity	10,110,424	9,506,740
Class A Shares
Shareholders’ equity
Class A shares: no par value, authorized 1,000,000,000 shares, issued and outstanding 70,896,795 and 57,500,000 shares	0	0
Total Class A shareholders’ equity	1,622,813	1,333,817
MGP Operating Partnership
ASSETS
Real estate investments, net	8,911,648	9,079,678
Cash and cash equivalents	1,138,801	360,492
Tenant and other receivables, net	6,104	9,503
Prepaid expenses and other assets	8,890	10,906
Above market lease, asset	44,981	46,161
Total assets	10,110,424	9,506,740
Liabilities
Debt, net	3,940,803	3,621,942
Due to MGM Resorts International and affiliates	524	166
Accounts payable, accrued expenses and other liabilities	12,281	10,478
Above market lease, liability	47,291	47,957
Accrued interest	27,393	26,137
Dividend and distribution payable	101,222	94,109
Deferred revenue	115,195	72,322
Deferred income taxes, net	25,368	25,368
Total liabilities	4,270,077	3,898,479
Commitments and contingencies (Note 12)
Partners' capital
General partner	0	0
Limited partners: issued and outstanding 256,258,931 and 242,862,136 Operating Partnership units	5,840,347	5,608,261
Total partners' capital	5,840,347	5,608,261
Shareholders’ equity
Total liabilities and shareholders’ equity	$ 10,110,424	$ 9,506,740

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016
Class A Shares
Common stock shares, par value (in usd per share)	$ 0	$ 0
Common stock shares, authorized	1,000,000,000	1,000,000,000
Common stock shares, issued	70,896,795	57,500,000
Common stock shares, outstanding	70,896,795	57,500,000
MGP Operating Partnership
Partners' capital, units issued	256,258,931	242,862,136
Partners' capital, units outstanding	256,258,931	242,862,136

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Rental revenue	$ 163,178	$ 154,809	$ 489,532	$ 256,062
Tenant reimbursements and other	19,620	17,690	61,621	27,340
Revenues, net	182,798	172,499	551,153	283,402
Expenses
Depreciation	68,662	54,260	190,573	158,860
Property transactions, net	1,662	1,442	19,104	2,651
Property taxes	18,983	17,690	60,112	44,231
Property insurance	0	0	0	2,943
Amortization of above market lease, net	172	114	515	114
Acquisition-related expenses	1,059	9,500	1,059	10,099
General and administrative	2,882	2,701	8,223	6,490
Expenses, net	93,420	85,707	279,586	225,388
Operating income	89,378	86,792	271,567	58,014
Non-operating income (expense)
Interest income	1,480	0	3,039	0
Interest expense	(45,544)	(42,839)	(134,998)	(72,314)
Other non-operating	(126)	(367)	(1,438)	(439)
Non-operating income (expense)	(44,190)	(43,206)	(133,397)	(72,753)
Income (loss) before income taxes	45,188	43,586	138,170	(14,739)
Provision for income taxes	(1,488)	(915)	(3,903)	(915)
Net income (loss)	43,700	42,671	134,267	(15,654)
Less: Net (income) loss attributable to noncontrolling interest	(32,675)	(32,080)	(101,214)	33,198
Class A Shares
Non-operating income (expense)
Net income attributable to Class A shareholders	$ 11,025	$ 10,591	$ 33,053	$ 17,544
Weighted average Class A shares outstanding:
Basic (in shares)	60,614,664	57,500,000	58,612,916	57,500,000
Diluted (in shares)	60,755,186	57,752,163	58,807,948	57,745,665
Net income per Class A share (basic)	$ 0.18	$ 0.18	$ 0.56	$ 0.31
Net income per Class A share (diluted)	0.18	0.18	0.56	0.30
Dividends declared per Class A share (in usd per share)	$ 0.3950	$ 0.3875	$ 1.1775	$ 0.6507
MGP Operating Partnership
Revenues
Rental revenue	$ 163,178	$ 154,809	$ 489,532	$ 256,062
Tenant reimbursements and other	19,620	17,690	61,621	27,340
Revenues, net	182,798	172,499	551,153	283,402
Expenses
Depreciation	68,662	54,260	190,573	158,860
Property transactions, net	1,662	1,442	19,104	2,651
Property taxes	18,983	17,690	60,112	44,231
Property insurance	0	0	0	2,943
Amortization of above market lease, net	172	114	515	114
Acquisition-related expenses	1,059	9,500	1,059	10,099
General and administrative	2,882	2,701	8,223	6,490
Expenses, net	93,420	85,707	279,586	225,388
Operating income	89,378	86,792	271,567	58,014
Non-operating income (expense)
Interest income	1,480	0	3,039	0
Interest expense	(45,544)	(42,839)	(134,998)	(72,314)
Other non-operating	(126)	(367)	(1,438)	(439)
Non-operating income (expense)	(44,190)	(43,206)	(133,397)	(72,753)
Income (loss) before income taxes	45,188	43,586	138,170	(14,739)
Provision for income taxes	(1,488)	(915)	(3,903)	(915)
Net income (loss)	$ 43,700	$ 42,671	$ 134,267	$ (15,654)
Weighted average Operating Partnership units outstanding:
Basic (in usd per unit)	245,976,800	233,642,286	243,975,052	225,997,423
Diluted (in usd per unit)	246,117,322	233,894,449	244,170,084	226,243,088
Net income per Operating Partnership unit (basic) (in usd per unit)	$ 0.18	$ 0.18	$ 0.55	$ 0.30
Net income per Operating Partnership unit (diluted) (in usd per unit)	0.18	0.18	0.55	0.30
Distributions declared per Operating Partnership unit (in usd per unit)	$ 0.3950	$ 0.3875	$ 1.1775	$ 0.6507

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income (loss)	$ 43,700	$ 42,671	$ 134,267	$ (15,654)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	1,754	0	(2,992)	0
Other comprehensive income (loss)	1,754	0	(2,992)	0
Comprehensive income (loss)	45,454	42,671	131,275	(15,654)
Less: Comprehensive (income) loss attributable to noncontrolling interests	(33,948)	(32,080)	(98,866)	33,198
Comprehensive income attributable to Class A shareholders	11,506	10,591	32,409	17,544
MGP Operating Partnership
Net income (loss)	43,700	42,671	134,267	(15,654)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	1,754	0	(2,992)	0
Other comprehensive income (loss)			(2,992)
Comprehensive income (loss)	$ 45,454	$ 42,671	$ 131,275	$ (15,654)

Condensed Combined and Consolid

Condensed Combined and Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income (loss)	$ 134,267	$ (15,654)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	190,573	158,860
Property transactions, net	19,104	2,651
Amortization and write-off of deferred financing costs and debt discount	9,241	4,392
Amortization related to above market lease, net	515	114
Provision for income taxes	3,903	915
Amortization of deferred revenue	(1,510)	0
Straight-line rental revenues	3,820	(1,062)
Share-based compensation	943	326
Changes in operating assets and liabilities:
Tenant and other receivables, net	3,399	(5,654)
Prepaid expenses and other assets	(4,214)	4,738
Due to MGM Resorts International and affiliates	358	211
Accounts payable, accrued expenses and other liabilities	2,200	2,868
Accrued interest	1,256	29,716
Net cash provided by operating activities	363,855	182,421
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent	0	(138,987)
Net cash used in investing activities	0	(138,987)
Cash flows from financing activities
Proceeds from issuance of debt	350,000	3,700,000
Deferred financing costs	(5,381)	(76,120)
Repayment of bridge facilities	0	(4,544,850)
Repayment of debt principal	(33,500)	(16,750)
Proceeds from purchase of Operating Partnership units by MGP	387,548	1,132,468
Issuance of Class A shares	404,685	1,207,500
Class A share issuance costs	(17,137)	(75,032)
Dividends and distributions paid	(284,213)	(56,720)
Net cash transfers from Parent	0	158,822
Net cash provided by financing activities	414,454	296,850
Cash and cash equivalents
Net increase for the period	778,309	340,284
Balance, beginning of period	360,492	0
Balance, end of period	1,138,801	340,284
Supplemental cash flow disclosures
Interest paid	125,077	38,206
Non-cash investing and financing activities
Non-Normal Tenant Improvements by Tenant	42,303	51,092
Accrual of dividend and distribution payable to Class A shareholders and Operating Partnership unit holders	101,222	94,109
Borgata Transaction net assets acquired	0	1,273,662
MGP Operating Partnership
Cash flows from operating activities
Net income (loss)	134,267	(15,654)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	190,573	158,860
Property transactions, net	19,104	2,651
Amortization and write-off of deferred financing costs and debt discount	9,241	4,392
Amortization related to above market lease, net	515	114
Provision for income taxes	3,903	915
Amortization of deferred revenue	(1,510)	0
Straight-line rental revenues	3,820	(1,062)
Share-based compensation	943	326
Changes in operating assets and liabilities:
Tenant and other receivables, net	3,399	(5,654)
Prepaid expenses and other assets	(4,214)	4,738
Due to MGM Resorts International and affiliates	358	211
Accounts payable, accrued expenses and other liabilities	2,200	2,868
Accrued interest	1,256	29,716
Net cash provided by operating activities	363,855	182,421
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent	0	(138,987)
Net cash used in investing activities	0	(138,987)
Cash flows from financing activities
Proceeds from issuance of debt	350,000	3,700,000
Deferred financing costs	(5,381)	(76,120)
Repayment of bridge facilities	0	(4,544,850)
Repayment of debt principal	(33,500)	(16,750)
Proceeds from purchase of Operating Partnership units by MGP	387,548	1,132,468
Dividends and distributions paid	(284,213)	(56,720)
Net cash transfers from Parent	0	158,822
Net cash provided by financing activities	414,454	296,850
Cash and cash equivalents
Net increase for the period	778,309	340,284
Balance, beginning of period	360,492	0
Balance, end of period	1,138,801	340,284
Supplemental cash flow disclosures
Interest paid	125,077	38,206
Non-cash investing and financing activities
Non-Normal Tenant Improvements by Tenant	42,303	51,092
Accrual of dividend and distribution payable to Class A shareholders and Operating Partnership unit holders	101,222	94,109
Borgata Transaction net assets acquired	$ 0	$ 1,273,662

Business

Business	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business	BUSINESS Organization. MGM Growth Properties LLC (“MGP” or the “Company”) is a limited liability company that was organized in Delaware on October 23, 2015. MGP conducts its operations through MGM Growth Properties Operating Partnership LP (the “Operating Partnership”), a Delaware limited partnership that was formed on January 6, 2016 and acquired by MGP on April 25, 2016 (the “IPO Date”) in connection with MGP's Formation Transactions (defined below), including its initial public offering of Class A shares as discussed further below. The Company filed its initial federal income tax return for its taxable year ended December 31, 2016 in 2017 and has elected to be treated as a real estate investment trust (“REIT”). MGM Resorts International (“MGM” or the “Parent”) is a Delaware corporation that acts largely as a holding company and, through its subsidiaries, owns and operates large-scale destination entertainment and leisure resorts. Prior to the IPO Date, the real estate assets of The Mirage, Mandalay Bay, Luxor, New York-New York, Monte Carlo, Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit and Beau Rivage (collectively, the “IPO Properties”), which comprised the Company’s real estate investments prior to the acquisition of Borgata and MGM National Harbor, were owned and operated by MGM. On the IPO Date, MGM engaged in a series of transactions (the “Formation Transactions”) in which subsidiaries of MGM transferred the IPO Properties to newly formed subsidiaries and subsequently transferred 100% ownership interest in such subsidiaries to the Operating Partnership pursuant to a Master Contribution Agreement (the “MCA”) in exchange for Operating Partnership units representing limited partner interests in the Operating Partnership and the assumption by the Operating Partnership of $4 billion of indebtedness from the contributing MGM subsidiaries. On the IPO Date, MGP completed the initial public offering of 57,500,000 of its Class A shares representing limited liability company interests at an initial offering price of $21.00 per share, inclusive of the full exercise by the underwriters of their option to purchase 7,500,000 Class A shares. MGP contributed the proceeds from its initial public offering to the Operating Partnership in exchange for 26.7% of the Operating Partnership units and the general partner interest in the Operating Partnership. Certain subsidiaries of MGM acquired the remaining 73.3% of the outstanding Operating Partnership units on such date. MGM retained ownership of MGP’s outstanding Class B share. The Class B share is a non-economic interest in MGP which does not provide its holder any rights to profits or losses or any rights to receive distributions from the operations of MGP or upon liquidation or winding up of MGP but which represents a majority of the voting power of MGP’s shares. As a result, MGP continues to be controlled by MGM through its majority voting rights. As discussed in Note 3, Note 8 and Note 14, the Operating Partnership issued additional Operating Partnership units in connection with the Borgata Transaction and the public offering of Class A shares completed in September 2017. As of September 30, 2017 , MGM owned 72.3% of the Operating Partnership units in the Operating Partnership. MGP owned the remaining 27.7% of the Operating Partnership units in the Operating Partnership. MGM’s Operating Partnership units are exchangeable into Class A shares of MGP on a one -to-one basis, or cash at the fair value of a Class A share. The determination of settlement method is at the option of MGP’s independent conflicts committee. MGM’s indirect ownership of these Operating Partnership units is recognized as a noncontrolling interest in MGP’s financial statements. A wholly owned subsidiary of MGP is the general partner of the Operating Partnership and operates and controls all of its business affairs. As a result, MGP consolidates the Operating Partnership and its subsidiaries. The Company is a publicly traded REIT primarily engaged through its investment in the Operating Partnership in the real property business, which consists of owning, acquiring and leasing large-scale destination entertainment and leisure resorts, whose tenants generally offer diverse amenities including casino gaming, hotel, convention, dining, entertainment and retail offerings. A wholly owned subsidiary of the Operating Partnership (the “Landlord”) leases all of its real estate properties back to a wholly owned subsidiary of MGM (the “Tenant”) under a master lease agreement (the “Master Lease”).

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation. The accompanying condensed combined and consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information set forth in the Accounting Standards Codification (“ASC”), as published by the Financial Accounting Standards Board (“FASB”), and with the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. All adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. For periods prior to the IPO Date, the accompanying condensed combined and consolidated financial statements of MGP represent the IPO Properties, which were controlled by MGM, and have been determined to be MGP’s Predecessor for accounting purposes (the “Predecessor”). The accompanying condensed combined and consolidated financial statements include Predecessor financial statements that have been “carved out” of MGM’s consolidated financial statements and reflect significant assumptions and allocations. The financial statements do not fully reflect what the Predecessor’s results of operations, financial position and cash flows would have been if the Predecessor had been a stand-alone company during the periods presented. As a result, historical financial information is not necessarily indicative of MGP’s future results of operations, financial position and cash flows. For periods subsequent to the IPO Date, the accompanying combined and consolidated financial statements of MGP represent the results of operations, financial positions and cash flows of MGP and the Operating Partnership, including their respective subsidiaries. The accompanying combined and consolidated financial statements of the Operating Partnership represent the results of operation, financial positions, and cash flows of the Operating Partnership including its subsidiaries. The accompanying condensed combined and consolidated financial statements and related notes should be read in conjunction with the audited financial statements and notes thereto included in the Company's most recent Annual Report on Form 10-K. Principles of consolidation. The Company identifies entities for which control is achieved through means other than voting rights and to determine which business enterprise is the primary beneficiary of variable interest entities (“VIEs”). A VIE is an entity in which either (i) the equity investors as a group, if any, lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance or (ii) the equity investment at risk is insufficient to finance that entity’s activities without additional subordinated financial support. The Company identifies the primary beneficiary of a VIE as the enterprise that has both of the following characteristics: (i) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and (ii) the obligation to absorb losses or receive benefits of the VIE that could potentially be significant to the entity. The Company consolidates its investment in a VIE when it determines that it is its primary beneficiary. The Company may change its original assessment of a VIE upon subsequent events such as the modification of contractual arrangements that affect the characteristics or adequacy of the entity’s equity investments at risk and the disposition of all or a portion of an interest held by the primary beneficiary. The Company performs this analysis on an ongoing basis. The condensed combined and consolidated financial statements include the accounts of the Operating Partnership, a VIE of which the Company is the primary beneficiary, as well as its wholly owned and majority-owned subsidiaries. The Company’s maximum exposure to loss is the carrying value of the assets and liabilities of the Operating Partnership, which represents all of the Company’s assets and liabilities. As the Company holds what is deemed a majority voting interest in the Operating Partnership through its ownership of the Operating Partnership’s sole general partner, it qualifies for the exemption from providing certain of the required disclosures associated with investments in VIEs. For entities not determined to be VIEs, the Company consolidates such entities in which the Company owns 100% of the equity. For entities in which the Company owns less than 100% of the equity interest, the Company consolidates the entity if it has the direct or indirect ability to control the entities’ activities based upon the terms of the respective entities’ ownership agreements. For these entities, the Company records a noncontrolling interest on the condensed consolidated balance sheets. All intercompany balances and transactions are eliminated in consolidation. Noncontrolling interest. The Company presents noncontrolling interest and classifies such interest as a component of consolidated shareholders’ equity, separate from the Company’s Class A shareholders’ equity. Noncontrolling interest in the Company represents Operating Partnership units currently held by subsidiaries of MGM. Net income or loss of the Operating Partnership is allocated to its noncontrolling interest based on the noncontrolling interest’s ownership percentage in the Operating Partnership except for income tax expenses. Ownership percentage is calculated by dividing the number of Operating Partnership units held by the noncontrolling interest by the total Operating Partnership units held by the noncontrolling interest and the Company. Issuance of additional Class A shares and Operating Partnership units changes the ownership interests of both the noncontrolling interest and the Company. Such transactions and the related proceeds are treated as capital transactions. MGM may tender its Operating Partnership units for redemption by the Operating Partnership in exchange for cash equal to the market price of MGP’s Class A shares at the time of redemption or for unregistered Class A shares on a one-for-one basis. Such selection to pay cash or issue Class A shares to satisfy an Operating Partnership unitholder’s redemption request is solely within the control of MGP’s independent conflicts committee. Use of estimates. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The Company’s most significant assumptions and estimates relate to the useful lives of real estate assets, real estate impairment assessments. These estimates are based on historical experience and other assumptions which management believes are reasonable under the circumstances. Management evaluates its estimates on an ongoing basis and makes revisions to these estimates and related disclosures as experience develops or new information becomes known. Actual results could differ from these estimates. Real estate investments. Real estate investments consist of land, buildings, improvements and integral equipment. Because the Formation Transactions and the Borgata Transaction (as defined below) represent transactions between entities under common control, such real estate was initially recorded by the Company at MGM’s historical cost basis, less accumulated depreciation (i.e., there was no change in the basis of the contributed assets), as of the IPO Date and the date of the consummation of the Borgata Transaction, respectively. Costs of maintenance and repairs to real estate investments are the responsibility of the Tenant under the Master Lease. Although the Tenant is responsible for all capital expenditures during the term of the Master Lease, if, in the future, a deconsolidation event occurs, the Company will be required to pay the Tenant, should the Tenant so elect, for certain capital improvements that would not constitute “normal tenant improvements” in accordance with U.S. GAAP (“Non-Normal Tenant Improvements”), subject to an initial cap of $100 million in the first year of the Master Lease increasing annually by $75 million each year thereafter. The Company will be entitled to receive additional rent based on the 10 -year Treasury yield plus 600 basis points multiplied by the value of the new capital improvements the Company is required to pay for in connection with a deconsolidation event and such capital improvements will be subject to the terms of the Master Lease. Examples of Non-Normal Tenant Improvements include the costs of structural elements at the properties, including capital improvements that expand the footprint or square footage of any of the properties or extend the useful life of the properties, as well as equipment that would be a necessary improvement at any of the properties, including initial installation of elevators, air conditioning systems or electrical wiring. Such Non-Normal Tenant Improvements are capitalized and depreciated over the asset’s remaining life. Non-Normal Tenant Improvements were $114.7 million as of September 30, 2017 . In accordance with accounting standards governing the impairment or disposal of long-lived assets, the carrying value of long-lived assets, including land, buildings and improvements, land improvements and integral equipment is evaluated whenever events or changes in circumstances indicate that a potential impairment has occurred relative to a given asset or assets. Factors that could result in an impairment review include, but are not limited to, a current period cash flow loss combined with a history of cash flow losses, current cash flows that may be insufficient to recover the investment in the property over the remaining useful life, a projection that demonstrates continuing losses associated with the use of a long-lived asset, significant changes in the manner of use of the assets or significant changes in business strategies. If such circumstances arise, the Company uses an estimate of the undiscounted value of expected future operating cash flows to determine whether the long-lived assets are impaired. If the aggregate undiscounted cash flows plus net proceeds expected from disposition of the asset (if any) are less than the carrying amount of the assets, the resulting impairment charge to be recorded is calculated based on the excess of the carrying value of the assets over the fair value of such assets, with the fair value determined based on an estimate of discounted future cash flows, appraisals or other valuation techniques. There were no impairment charges related to long-lived assets recognized during the three and nine months ended September 30, 2017 or 2016 . Cash and cash equivalents. Cash and cash equivalents include investments and interest bearing instruments with maturities of 90 days or less at the date of acquisition. Such investments are carried at cost, which approximates market value. Deferred revenue. The Company receives nonmonetary consideration related to Non-Normal Tenant Improvements as they automatically become MGP’s property, and recognizes the cost basis of Non-Normal Tenant Improvements as real estate investments and deferred revenue. The Company depreciates the real estate investments over their estimated useful lives and amortizes the deferred revenue as additional rental revenue over the remaining term of the Master Lease once the related real estate assets are placed in service. Revenue recognition. Rental revenue under the Master Lease is recognized on a straight-line basis over the non-cancelable term and reasonably assured renewal periods, which includes the initial lease term of 10 years and all four additional five -year terms under the Master Lease, for all contractual revenues that are determined to be fixed and measurable. The difference between such rental revenue earned and the cash rent due under the provisions of the Master Lease is recorded as deferred rent receivable and included as a component of prepaid expenses and other assets, or as deferred revenue if cash rent due exceeds rental revenue earned. Property tax reimbursements from Tenant arise from the triple-net structure of the Master Lease which provides for the recovery of property taxes, which are paid by the Company on behalf of the Tenant. This revenue is recognized in the same periods as the expense is incurred. Depreciation and property transactions. Depreciation expense is recognized over the useful lives of real estate applying the straight-line method. Useful lives are periodically reviewed. Leased real estate and leasehold improvements are depreciated on a straight-line basis over the following estimated useful lives: Buildings and building improvements 20 to 40 years Land improvements 10 to 20 years Fixtures and integral equipment 3 to 20 years Property transactions, net are comprised of transactions related to long-lived assets, such as normal losses on the disposition of assets. General and administrative. General and administrative expenses include the salaries and benefits of employees and external consulting costs. In addition, pursuant to a corporate services agreement entered into on the IPO Date between the Operating Partnership and MGM (the “Corporate Services Agreement”), MGM provides the Operating Partnership and its subsidiaries with financial, administrative and operational support services, including accounting and finance support, human resources support, legal and regulatory compliance support, insurance advisory services, internal audit services, governmental affairs monitoring and reporting services, information technology support, construction services and various other support services. MGM is reimbursed for all costs it incurs directly related to providing the services thereunder. The Operating Partnership incurred expenses pursuant to the Corporate Services Agreement for the three and nine months ended September 30, 2017 of $0.4 million and $1.2 million , respectively. The Operating Partnership incurred expenses pursuant to the Corporate Services Agreement from the IPO Date through September 30, 2016 of $0.6 million . Share-based compensation. The Company recognizes share-based compensation awards as compensation expense and includes such expense within general and administrative expense in the condensed combined and consolidated statement of operations. Compensation expense, net of estimated forfeitures, for restricted share unit awards is based on the fair value of MGP’s Class A shares at the date of grant and is generally recognized ratably over the vesting period. For ratable awards, the Company recognized compensation costs for all grants on a straight-line basis over the requisite service period of the entire award. Compensation expense for performance share unit awards, which have market conditions, is based on a Monte Carlo simulation at the date of grant and is generally recognized ratably over the vesting period. Income tax provision. For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was 3.3% and 2.8% for the three and nine months ended September 30, 2017 , respectively. The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, the Company determines deferred tax assets and liabilities on the basis of the differences between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company has elected to be treated as a REIT as defined under Section 856(a) of the Internal Revenue Code of 1986, as amended (the “Code”), commencing with its taxable year ended December 31, 2016. To qualify as a REIT, the Company must meet certain organizational, income, asset and distribution tests. Accordingly, except as described below, the Company will generally not be subject to corporate U.S. federal or state income tax to the extent that it makes qualifying distributions of all of its taxable income to its shareholders and provided it satisfies on a continuing basis, through actual investment and operating results, the REIT requirements, including certain asset, income, distribution and share ownership tests. U.S. federal income tax law generally requires that a REIT distribute annually at least 90% of its REIT taxable income, without regard to the deduction for dividends paid and excluding net capital gains, and that it pay taxes at regular corporate income tax rates to the extent that it annually distributes less than 100% of its taxable income. The Company distributed 100% of its taxable income in the taxable year ended December 31, 2016 and anticipates that it will do so again in the taxable year ending December 31, 2017. Accordingly, for periods subsequent to the IPO Date, the accompanying condensed combined and consolidated financial statements do not reflect a provision for federal income taxes. However, the Company may still be subject to federal excise tax, as well as certain state and local income and franchise taxes. The Landlord is required to join in the filing of a New Jersey consolidated corporation business tax return under the New Jersey Casino Control Act and include in such return its income and expenses associated with its New Jersey assets and is thus subject to an entity level tax in New Jersey. Although the consolidated New Jersey return also includes MGM and certain of its subsidiaries, the Company is required to record New Jersey state income taxes in the accompanying financial statements as if the Landlord was taxed for state purposes on a stand-alone basis. The Company and MGM have entered into a tax sharing agreement providing for an allocation of taxes due in the consolidated New Jersey return. Pursuant to this agreement, the Landlord will only be responsible for New Jersey taxes on any gain that may be realized upon a future sale of the New Jersey assets resulting solely from an appreciation in value of such assets over their value on the date they were contributed to the Landlord by a subsidiary of MGM. MGM is responsible for all other taxes reported in the New Jersey consolidated return. Accordingly, the provision for current taxes and the deferred tax liability in the accompanying financial statements are attributable to noncontrolling interest since the payment of such taxes are the responsibility of MGM. The Company was included in the consolidated or unitary income tax returns of MGM for all Predecessor periods. In the accompanying financial statements, the Predecessor periods reflect an allocation of income taxes from MGM as if the Predecessor had filed a separate tax return in those periods. Net income per share. Basic net income per share includes the weighted average number of Class A shares outstanding during the period. Dilutive net income per share includes the weighted average number of Class A shares and the dilutive effect of share-based compensation awards outstanding during the period, when such awards are dilutive. Net income per unit. Basic net income per unit includes the weighted average number of Operating Partnership units outstanding during the period. Dilutive net income per unit includes the weighted average number of Operating Partnership units and the dilutive effect of share-based compensation awards outstanding during the period, when such awards are dilutive. Deferred financing costs. Deferred financing costs were incurred in connection with the issuance of the term loan facilities, revolving credit facility and senior notes. Costs incurred in connection with term loan facilities and senior notes are capitalized and offset against the carrying amount of the related indebtedness. These costs are amortized over the term of the related indebtedness, and are included in interest expense in the combined and consolidated statement of operations. Costs incurred in connection with the Operating Partnership’s entrance into the revolving credit facility are capitalized as a component of prepaid expenses and other assets. These costs are amortized over the term of the revolving credit facility, and are included in interest expense in the combined and consolidated statement of operations. The Company recognized non-cash interest expense related to the amortization of deferred financing costs of $2.8 million and $8.4 million during the three and nine months ended September 30, 2017 , respectively. Derivative financial instruments. The Company accounts for its derivatives in accordance with FASB ASC Topic 815, Derivatives and Hedging , in which all derivative instruments are reflected at fair value as either assets or liabilities. For derivative instruments that are designated and qualify as hedging instruments, the Company records the effective portion of the gain or loss on the hedge instruments as a component of accumulated other comprehensive income. Any ineffective portion of a derivative’s change in fair value is immediately recognized within net income. Fair value measurements . Fair value of financial and nonfinancial assets and liabilities is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The three-tier hierarchy for inputs used in measuring fair value, which prioritizes the inputs used in the methodologies of measuring fair value for assets and liabilities, is as follows: Level 1—Observable inputs for identical instruments such as quoted market prices; Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.) and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs); and Level 3—Unobservable inputs that reflect the Company’s determination of assumptions that market participants would use in pricing the asset or liability. These inputs are developed based on the best information available, including management’s own data. Fair value measurements are utilized for testing of long-lived assets for impairment. Also, the fair value of the Company’s cash and cash equivalents, accounts payable and accrued expenses approximate their carrying value because of the short-term nature of these instruments. The fair values of the Company's financial instruments are as follows: September 30, 2017 Total Level 1 Level 2 Level 3 (in thousands) Assets: Derivative asset - interest rate swaps $ 1,045 $ — $ 1,045 $ — Liabilities: Senior secured credit facility: Senior secured term loan A facility 277,500 277,500 Senior secured term loan B facility 1,826,806 1,826,806 Senior secured revolving credit facility — — $1,050 million 5.625% senior notes, due 2024 1,136,625 1,136,625 $500 million 4.50% senior notes, due 2026 507,500 507,500 $350 million 4.50% senior notes, due 2028 353,938 — 353,938 — Derivative liability - interest rate swaps 2,380 2,380 $ 4,104,749 $ — $ 4,104,749 $ — The total carrying value of our debt was $3.9 billion at September 30, 2017 , with a fair value of $4.1 billion . The estimated fair value was estimated using quoted prices for identical or similar liabilities in markets that are not active for each of the Company’s term loan A facility, term loan B facility, revolving credit facility and senior notes. These fair value measurements are considered Level 2 of the fair value hierarchy. Derivative assets and liabilities are carried at fair value. The fair value of interest rate swaps is determined based on the present value of expected future cash flows using observable, quoted LIBOR swap rates for the full term of the swap. The Company has determined that the majority of the inputs used to value its derivative assets fall within Level 2 of the fair value hierarchy. Reportable segment. The Company’s real estate properties are similar in that they consist of large-scale destination entertainment and leisure resorts and related offerings, whose tenants generally offer casino gaming, hotel, convention, dining, entertainment and retail, are held by a subsidiary of the Operating Partnership, have similar economic characteristics and are governed under a single Master Lease. As such, the properties are reported as one reportable segment. Concentrations of credit risk. All of the Company’s real estate properties have been leased to a wholly owned subsidiary of MGM, and all of MGP’s revenues are derived from the Master Lease. MGM is a publicly traded company and is subject to the filing requirements of the Exchange Act, and is required to file periodic reports on Form 10-K and Form 10-Q with the SEC. Refer to www.edgar.gov for MGM’s publicly available financial information (which financial information is not incorporated by reference herein). Management does not believe there are any other significant concentrations of credit risk. Geographical risk. The majority of the Company’s real estate properties are located in Las Vegas, Nevada. Accordingly, future negative trends in local economic activity or natural disasters in this area might have a more significant effect on the Company than a more geographically diversified entity and could have an adverse impact on its financial condition and operating results. Recently issued accounting standards. In August 2017, the FASB issued Accounting Standards Update No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, and interim periods within those years. ASU 2017-12 amends the hedge accounting recognition and presentation requirements in order to improve the transparency and understandability of information about an entity’s risk management activities, and simplifies the application of hedge accounting. The Company is currently assessing the impact that adoption of this guidance will have on its consolidated financial statements and footnote disclosures. In January 2017, the FASB issues Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”). ASU 2017-01 clarifies the definition of a business and with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We have elected to early adopt ASU 2017-01 as of January 1, 2017. The adoption of ASU 2017-01 did not have a material impact on the Company's financial statements and footnote disclosures. In January 2017, the Company adopted Accounting Standards Update No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). ASU 2016-09 simplifies the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The adoption of ASU 2016-09 did not have a material effect on the Company’s financial statements and footnote disclosures. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which replaces the existing guidance in FASB ASC Topic 840, Leases . ASU 2016-02 requires a dual approach for lessee accounting under which a lessee would account for leases as finance leases or operating leases. Both finance leases and operating leases will result in the lessee recognizing a right-of-use (“ROU”) asset and a corresponding lease liability. For finance leases the lessee would recognize interest expense and amortization of the ROU asset and for operating leases the lessee would recognize a straight-line total lease expense. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently in the process of determining the method of adoption and assessing the impact that adoption of this guidance will have on its financial statements and footnote disclosures. In August 2015, the FASB issued Accounting Standards Update No. 2015-14, Revenue From Contracts With Customers (Topic 606): Deferral of the Effective Date , which defers the effective date of Accounting Standards Update No. 2014-09, Revenue From Contracts With Customers (“ASU 2014-09”) to the fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. Additionally, the new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The adoption of ASU 2015-14 will not have a material impact on the Company's financial statements and footnote disclosures.

Borgata Transaction

Borgata Transaction	9 Months Ended
	Sep. 30, 2017
Business Combinations [Abstract]
Borgata Transaction	BORGATA TRANSACTION On August 1, 2016 , MGM completed the acquisition of Boyd Gaming Corporation's (“Boyd Gaming”) ownership interest in Borgata. Concurrently, MGM, MGP, the Operating Partnership, the Landlord and the Tenant completed the transfer of the real estate assets related to Borgata, located at Renaissance Pointe in Atlantic City, New Jersey, from a subsidiary of MGM to the Landlord (the “Borgata Transaction”). A subsidiary of MGM operates Borgata. The real estate assets related to Borgata were leased by the Landlord to the Tenant via an amendment to the Master Lease. As a result, the initial rent under the Master Lease increased by $100 million , $90 million of which relates to the base rent for the initial term and the remaining $10 million of which relates to the percentage rent. Following the closing of the Borgata Transaction, the base rent under the Master Lease increased to $585 million for the initial term and the percentage rent was $65 million , prorated for the remainder of the first lease year after the Borgata Transaction. The consideration that was paid by MGP to a subsidiary of MGM consisted of 27.4 million newly issued Operating Partnership units and the assumption by the Landlord of $545 million of indebtedness from such subsidiary of MGM. The Borgata Transaction was accounted for as a transaction under common control, and therefore the Company recorded the Borgata real estate assets at their carryover value of $1.3 billion determined by MGM in its purchase price allocation, along with a related deferred tax liability of $25.3 million . In addition, the Company recognized an above market lease liability and an above market lease asset related to ground leases assigned to the Landlord as part of the Borgata Transaction covering approximately 11 acres partially underlying and adjacent to the Borgata. Under the terms of the Master Lease, the Tenant is responsible for the rent payments related to these ground leases during the term of the Master Lease. The Company amortizes the above market lease liability on a straight-line basis over the terms of the underlying ground leases, which extend through 2070 . The Company amortizes the above market lease asset on a straight-line basis over the term of the Master Lease, which extends through 2046 (including reasonably assured renewal periods pursuant to the terms of the Master Lease).

Real Estate Investments

Real Estate Investments	9 Months Ended
	Sep. 30, 2017
Real Estate [Abstract]
Real Estate Investments	REAL ESTATE INVESTMENTS The carrying value of real estate investments is as follows: September 30, 2017 December 31, 2016 (in thousands) Land $ 4,143,513 $ 4,143,513 Buildings, building improvements, land improvements and integral equipment 7,315,659 7,324,657 11,459,172 11,468,170 Less: Accumulated depreciation (2,547,524 ) (2,388,492 ) $ 8,911,648 $ 9,079,678

Leases

Leases	9 Months Ended
	Sep. 30, 2017
Leases [Abstract]
Leases	LEASES Master Lease. Pursuant to the Master Lease, the Tenant has leased the Company’s real estate properties from the Landlord. The Master Lease is accounted for as an operating lease and has an initial lease term of ten years with the potential to extend the term for four additional five -year terms thereafter at the option of the Tenant. The Master Lease provides that any extension of its term must apply to all of the real estate under the Master Lease at the time of the extension. The Master Lease has a triple-net structure, which requires the Tenant to pay substantially all costs associated with the lease, including real estate taxes, insurance, utilities and routine maintenance, in addition to the base rent. Additionally, the Master Lease provides MGP with a right of first offer with respect to MGM National Harbor and MGM’s development property in Springfield, Massachusetts, which MGP may exercise should MGM elect to sell these properties in the future. Pursuant to this right under the Master Lease, MGM notified the Company of its election to sell the real estate assets related to MGM National Harbor, primarily comprising its interest in the underlying ground lease and related buildings and improvements, and offered the Company the right to purchase the MGM National Harbor assets. The Company completed its acquisition of the MGM National Harbor assets from MGM in October 2017 (the “MGM National Harbor Transaction”). See Note 14 for further discussion related to the MGM National Harbor Transaction. Rent under the Master Lease consists of a “base rent” component and a “percentage rent” component. For the first year, the base rent represented 90% of the initial total rent payments due under the Master Lease, or $585 million , and the percentage rent represented 10% of the initial total rent payments due under the Master Lease, or $65 million . The base rent includes a fixed annual rent escalator of 2.0% for the second through the six th lease years (as defined in the Master Lease). After the sixth lease year, the annual escalator of 2.0% will be subject to the Tenant and, without duplication, the operating subsidiary sublessees of the Tenant (the “Operating Subtenants”), collectively meeting an adjusted net revenue to rent ratio of 6.25 :1.00 based on their net revenue from the leased properties subject to the Master Lease (as determined in accordance with U.S. GAAP, adjusted to exclude net revenue attributable to certain scheduled subleases and, at the Tenant’s option, reimbursed cost revenue). The first 2.0% fixed annual rent escalator went into effect on April 1, 2017, resulting in annual rent payments of $661.7 million for the second lease year. The percentage rent will initially be a fixed amount for approximately the first six years and will then be adjusted every five years based on the average actual annual net revenues of the Tenant and, without duplication, the Operating Subtenants, from the leased properties subject to the Master Lease at such time for the trailing five calendar-year period (calculated by multiplying the average annual net revenues, excluding net revenue attributable to certain scheduled subleases and, at the Tenant’s option, reimbursed cost revenue, for the trailing five calendar-year period by 1.4% ). Rental revenues from the Master Lease for the three and nine months ended September 30, 2017 were $163.2 million and $489.5 million , respectively. The Company also recognized revenue related to the reimbursement of property taxes paid by the Tenant of $19.0 million and $60.1 million for the three and nine months ended September 30, 2017 , respectively. Under the Master Lease, remaining noncancelable minimum rental payments as of September 30, 2017 are as follows: Year ending December 31, (in thousands) 2017 $ 165,425 2018 670,651 2019 682,764 2020 695,119 2021 707,721 2022 662,137 Thereafter 2,099,134 $ 5,682,951

Debt

Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	DEBT Debt consists of the following: September 30, December 31, 2017 2016 (in thousands) Senior secured credit facility: Senior secured term loan A facility $ 277,500 $ 292,500 Senior secured term loan B facility 1,822,250 1,840,750 Senior secured revolving credit facility — — $1,050 million 5.625% senior notes, due 2024 1,050,000 1,050,000 $500 million 4.50% senior notes, due 2026 500,000 500,000 $350 million 4.50% senior notes, due 2028 350,000 — 3,999,750 3,683,250 Less: Unamortized discount and debt issuance costs (58,947 ) (61,308 ) $ 3,940,803 $ 3,621,942 Operating Partnership credit agreement. On the IPO Date, the Operating Partnership entered into a credit agreement, comprised of a $300 million senior secured term loan A facility, a $1.85 billion senior secured term loan B facility and a $600 million senior secured revolving credit facility. The term loan B facility was issued at 99.75% to initial lenders. The term loan facilities are subject to amortization of principal in equal quarterly installments, with 5.0% of the initial aggregate principal amount of the term loan A facility and 1.0% of the initial aggregate principal amount of the term loan B facility to be payable each year. The term loan facilities were recorded at cost net of the original issue discount and related borrowing costs. The related original issue discount and the borrowing costs are amortized over the term of the borrowing. The revolving credit facility is recorded at cost. The borrowing costs were capitalized as a component of prepaid expenses and other assets and are amortized over the term of the credit facility. The revolving credit facility and term loan A facility bore interest at LIBOR plus 2.75% for the first six months, and thereafter the interest rate is determined by reference to a total net leverage ratio pricing grid which would result in an interest rate of LIBOR plus 2.25% to 2.75% . The term loan B facility initially bore interest at LIBOR plus 3.25% with a LIBOR floor of 0.75% . On October 26, 2016, the Operating Partnership completed a re-pricing at par of its $1.84 billion term loan B facility. As a result of the re-pricing, the term loan B facility bore interest at LIBOR plus 2.75% , with a LIBOR floor of 0.75% . In February 2017, MGP's corporate family rating was upgraded which resulted in the Operating Partnership receiving a further reduction in pricing to LIBOR plus 2.50% , with a LIBOR floor of 0.75% . On May 1, 2017, the Company completed another re-pricing of the Operating Partnership’s term loan B facility. As a result of this re-pricing, the term loan B facility bears interest at LIBOR plus 2.25% , with a LIBOR floor of 0% . The revolving credit facility and the term loan A facility will mature in 2021 and the term loan B facility will mature in 2023. As of September 30, 2017 , no amounts were drawn on the revolving credit facility. At September 30, 2017 , the interest rate on the term loan A facility was 3.99% and the interest rate on the term loan B facility was 3.49% . See Note 7 for further discussion of the Company's interest rate swap agreements related to the term loan B facility. The credit agreement contains customary representations and warranties, events of default and positive and negative covenants. These covenants are subject to a number of important exceptions and qualifications, including, with respect to the restricted payments covenant, the ability to make unlimited restricted payments to maintain the REIT status of MGP. The revolving credit facility and term loan A facility also require the Operating Partnership to maintain compliance with a maximum secured net debt to adjusted total asset ratio, a maximum total net debt to adjusted asset ratio and a minimum interest coverage ratio, all of which may restrict the Operating Partnership’s ability to incur additional debt to fund its obligations in the near term. As of September 30, 2017 , the Operating Partnership was required to have a senior secured net debt to adjusted total assets ratio of not more than 0.40 to1.00, a total net debt to adjusted total assets ratio of not more than 0.60 to 1.00, and an interest coverage ratio of not less than 2.00 to 1.00. The Operating Partnership was in compliance with its financial covenants at September 30, 2017 . The revolving credit facility and the term loan facilities are both guaranteed by each of the Operating Partnership’s existing and subsequently acquired direct and indirect wholly owned material domestic restricted subsidiaries, and secured by a first priority lien security interest on substantially all of the Operating Partnership’s and such restricted subsidiaries’ material assets, including mortgages on its real estate, subject to customary exclusions. Operating Partnership senior notes. On April 20, 2016, a wholly owned subsidiary of the Operating Partnership issued $1.05 billion in aggregate principal amount of 5.625% senior notes due 2024 and on the IPO Date, the Operating Partnership entered into a supplemental indenture through which it assumed the obligations under the senior notes from such subsidiary (which merged into the Operating Partnership on such date). The senior notes will mature on May 1, 2024 . Interest on the senior notes is payable on May 1 and November 1 of each year, commencing on November 1, 2016 . On August 12, 2016, the Operating Partnership issued $500 million in aggregate principal amount of 4.500% senior notes due 2026 . The senior notes will mature on September 1, 2026. Interest on the senior notes is payable on March 1 and September 1 of each year, commencing on March 1, 2017 . On September 7, 2017, the Operating Partnership issued $350 million in aggregate principal amount of 4.500% senior notes due 2028. The senior notes will mature on January 15, 2028. Interest on the senior notes is payable on January 15 and July 15 of each year, commencing on January 15, 2018. Each series of the Operating Partnership's senior notes are fully and unconditionally guaranteed, jointly and severally, on a senior basis by all of the Operating Partnership’s subsidiaries that guarantee the Operating Partnership’s credit facilities, other than MGP Finance Co-Issuer, Inc., which is a co-issuer of the senior notes. The Operating Partnership may redeem all or part of the senior notes at a redemption price equal to 100% of the principal amount of the senior notes plus, to the extent the Operating Partnership is redeeming senior notes prior to the date that is three months prior to their maturity date, an applicable make whole premium, plus, in each case, accrued and unpaid interest. The indentures governing the senior notes contain customary covenants and events of default. These covenants are subject to a number of important exceptions and qualifications set forth in the applicable indentures governing the senior notes, including, with respect to the restricted payments covenants, the ability to make unlimited restricted payments to maintain the REIT status of MGP. Maturities of debt. Maturities of the principal amount of the Company’s debt as of September 30, 2017 are as follows: Year ending December 31, ( in thousands ) 2017 $ 8,375 2018 33,500 2019 33,500 2020 33,500 2021 247,250 2022 18,500 Thereafter 3,625,125 $ 3,999,750

Derivatives and Hedging Activit

Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	DERIVATIVES AND HEDGING ACTIVITIES The Company uses derivative instruments to mitigate the effects of interest rate volatility inherent in its variable rate debt, which could unfavorably impact our future earnings and forecasted cash flows. The Company does not use derivative instruments for speculative or trading purposes. The Operating Partnership is party to interest rate swaps to mitigate the interest rate risk inherent in its senior secured term loan B facility. In May 2017 in connection with the term loan B re-pricing, the Company amended its outstanding interest rate swap agreements. Under the amended agreements the Company now pays a weighted average fixed rate of 1.844% on total notional amount of $1.2 billion and the variable rate received will reset monthly to the one-month LIBOR, with no minimum floor. The principal terms of these interest rate swaps at September 30, 2017 are as follows: Effective Date Maturity Date Notional Amount Weighted Average Fixed Rate Fair Value Asset (Liability) (in thousands, except percentages) May 3, 2017 November 30, 2021 $ 500,000 1.764 % $ 1,045 May 3, 2017 November 30, 2021 700,000 1.901 % (2,380 ) $ 1,200,000 $ (1,335 ) As of December 31, 2016, the Company had interest rate swaps with a notional amount of $500 million outstanding with a weighted average fixed rate of 1.825% and a net unrealized gain of $1.9 million . Interest rate swaps valued in net unrealized gain positions are recognized as asset balances within the prepaid expenses and other assets. Interest rate swaps valued in net unrealized loss positions are recognized as liability balances within accounts payable, accrued expenses and other liabilities. For the three and nine months ended September 30, 2017 , the amount recorded in other comprehensive income related to the derivative instruments was a net gain of $1.8 million and net loss of $3.0 million , respectively. There was no material ineffective portion of the change in fair value derivatives. During the three and nine months ended September 30, 2017 , the Company recorded interest expense of $2.0 million and $7.4 million , respectively, related to the swap agreements.

Shareholders' Equity and Partne

Shareholders' Equity and Partners' Capital	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity and Partners' Capital	SHAREHOLDERS’ EQUITY AND PARTNERS' CAPITAL MGP shareholders' equity . On the IPO Date, MGP completed the initial public offering of 57,500,000 of its Class A shares representing limited liability company interests. MGM retained ownership of MGP’s single Class B share. The Class B share is a non-economic interest in MGP which does not provide its holder any rights to profits or losses or any rights to receive distributions from operations of MGP or upon liquidation or winding up of MGP. MGP’s Class B shareholder is entitled to an amount of votes representing a majority of the total voting power of MGP’s shares. If the holder of the Class B share and its controlled affiliates’ (excluding MGP and its subsidiaries) aggregate beneficial ownership of the combined economic interests in MGP and the Operating Partnership falls below 30% , the Class B share is no longer entitled to any voting rights. To the extent that the Class B share is entitled to majority voting power pursuant to MGP’s operating agreement, MGM may only transfer the Class B share (other than transfers to us and MGM’s controlled affiliates) if and to the extent that such transfer is approved by special approval by an independent conflicts committee, not to be unreasonably withheld. When determining whether to grant such approval, the conflicts committee must take into account the interests of MGP’s Class A shareholders and MGP ahead of the interests of the holder of the Class B share. No par value is attributed to the MGP’s Class A and Class B shares. On September 11, 2017, MGP completed an offering of 13,225,000 Class A shares representing limited liability company interests in a registered public offering, including 1,725,000 Class A shares sold pursuant to the exercise in full by the underwriters of their over-allotment option, for net proceeds of approximately $387.5 million after deducting underwriting discounts and commissions and estimated offering expenses. The net proceeds were contributed to the Operating Partnership in exchange for Operating Partnership units. Operating Partnership capital. On the IPO Date, MGP contributed the proceeds from its initial public offering to the Operating Partnership in exchange for 26.7% of the outstanding Operating Partnership units in the Company. Certain subsidiaries of MGM also acquired 73.3% of the outstanding Operating Partnership units on the IPO Date. As of August 1, 2016, the date of the Borgata Transaction, MGP’s ownership percentage in the Operating Partnership units was reduced to 23.7% and MGM's indirect ownership percentage increased to 76.3% . As of September 11, 2017, as a result of the equity offering noted above, MGP's ownership percentage in the Operating Partnership units increased to 27.7% and MGM's ownership percentage in the Operating Partnership units decreased to 72.3% . MGP dividends and Operating Partnership distributions. On September 15, 2017, the Operating Partnership announced a cash distribution to holders of Operating Partnership units of $101.2 million or $0.3950 per Operating Partnership unit. MGP concurrently declared a cash dividend for the quarter ended September 30, 2017 of $28 million or $0.3950 per Class A share payable to shareholders of record as of September 30, 2017 . The distribution and dividend were paid in October 2017. On June 15, 2017, the Operating Partnership announced a cash distribution to holders of Operating Partnership units of $96.0 million or $0.3950 per Operating Partnership unit. MGP concurrently declared a cash dividend for the quarter ended June 30, 2017 of $22.8 million or $0.3950 per Class A share payable to shareholders of record as of June 30, 2017. The distribution and dividend were paid in July 2017. On March 15, 2017, the Operating Partnership announced a cash distribution to holders of Operating Partnership units of $0.3875 per Operating Partnership unit. The Company’s Board of Directors concurrently declared a cash dividend for the quarter ended March 31, 2017 of $0.3875 per Class A share payable to shareholders of record as of March 31, 2017. The distribution and dividend were paid in April 2017. Dividends with respect to MGP’s Class A shares are characterized for federal income tax purposes as taxable ordinary dividends, capital gains dividends, non-dividend distributions or a combination thereof. The following table presents MGP's changes in shareholders' equity for the nine months ended September 30, 2017 : Total Class A Shareholders' Equity Noncontrolling Total (in thousands) Balance at January 1, 2017 $ 1,333,817 $ 4,274,444 $ 5,608,261 Net income - January 1, 2017 to September 30, 2017 33,053 101,214 134,267 Other comprehensive loss - cash flow hedges (644 ) (2,348 ) (2,992 ) Share-based compensation 229 714 943 Deemed contribution - tax sharing agreement — 3,903 3,903 Dividends and distributions declared and paid (73,063 ) (218,263 ) (291,326 ) Issuance of Class A shares 329,508 58,040 387,548 Other (87 ) (170 ) (257 ) Balance at September 30, 2017 $ 1,622,813 $ 4,217,534 $ 5,840,347 The following table presents the Operating Partnership's changes in partners' capital for the nine months ended September 30, 2017 : General Partner Limited Partners Total Partners' Capital (in thousands) Balance at January 1, 2017 $ — $ 5,608,261 $ 5,608,261 Net income - January 1, 2017 to September 30, 2017 — 134,267 134,267 Other comprehensive loss - cash flow hedges — (2,992 ) (2,992 ) Share-based compensation — 943 943 Deemed contribution - tax sharing agreement — 3,903 3,903 Distributions declared and paid — (291,326 ) (291,326 ) Issuance of Operating Partnership units — 387,548 387,548 Other — (257 ) (257 ) Balance at September 30, 2017 $ — $ 5,840,347 $ 5,840,347

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME Comprehensive income includes net income and all other non-shareholder changes in equity, or other comprehensive income. The following table summarizes the changes in accumulated other comprehensive income by component for the nine months ended September 30, 2017 (there was no other comprehensive income for the nine months ended September 30, 2016 ): Changes in Fair Value of Effective Cash Flow Hedge Total (in thousands) Balance at December 31, 2016 $ 1,879 $ 1,879 Other comprehensive income before reclassifications 3,932 3,932 Amounts reclassified from accumulated other comprehensive income (6,924 ) (6,924 ) Net current period other comprehensive loss (2,992 ) (2,992 ) Balance at September 30, 2017 (1,113 ) (1,113 ) Accumulated other comprehensive loss attributable to noncontrolling interest 805 805 Accumulated other comprehensive (loss) attributable to Class A shareholders $ (308 ) $ (308 )

Net Income Per Class A Share

Net Income Per Class A Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Income Per Class A Share	NET INCOME PER CLASS A SHARE The table below provides net income and the number of Class A shares used in the computations of “basic” net income per share, which utilizes the weighted-average number of Class A shares outstanding without regard to dilutive potential Class A shares, and “diluted” net income per share, which includes all such shares. Net income attributable to Class A shares, weighted average Class A shares outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . Net income per share has not been presented for the Class B shareholder as the Class B share is not entitled to any economic rights. The nine months ended September 30, 2016 reflect the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Basic net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.31 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Effect of dilutive shares for diluted net income per Class A share 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Class A share 60,755,186 57,752,163 58,807,948 57,745,665 Diluted net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.30 NET INCOME PER OPERATING PARTNERSHIP UNIT The table below provides net income and the number of Operating Partnership units used in the computations of “basic” net income per Operating Partnership unit, which utilizes the weighted-average number of Operating Partnership units outstanding without regard to dilutive potential Operating Partnership units, and “diluted” net income per Operating Partnership units, which includes all such Operating Partnership units. Net income attributable to Operating Partnership units, weighted average Operating Partnership units outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . The nine months ended September 30, 2016 reflects the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Basic net income per Operating Partnership unit $ 0.18 0.18 $ 0.55 $ 0.30 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Effect of dilutive shares for diluted net income per Operating Partnership unit 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Operating Partnership unit 246,117,322 233,894,449 244,170,084 226,243,088 Diluted net income per Operating Partnership unit $ 0.18 $ 0.18 $ 0.55 $ 0.30

Net Income Per Operating Patner

Net Income Per Operating Patnership Unit	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Income Per Operating Partnership Unit	NET INCOME PER CLASS A SHARE The table below provides net income and the number of Class A shares used in the computations of “basic” net income per share, which utilizes the weighted-average number of Class A shares outstanding without regard to dilutive potential Class A shares, and “diluted” net income per share, which includes all such shares. Net income attributable to Class A shares, weighted average Class A shares outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . Net income per share has not been presented for the Class B shareholder as the Class B share is not entitled to any economic rights. The nine months ended September 30, 2016 reflect the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Basic net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.31 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Effect of dilutive shares for diluted net income per Class A share 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Class A share 60,755,186 57,752,163 58,807,948 57,745,665 Diluted net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.30 NET INCOME PER OPERATING PARTNERSHIP UNIT The table below provides net income and the number of Operating Partnership units used in the computations of “basic” net income per Operating Partnership unit, which utilizes the weighted-average number of Operating Partnership units outstanding without regard to dilutive potential Operating Partnership units, and “diluted” net income per Operating Partnership units, which includes all such Operating Partnership units. Net income attributable to Operating Partnership units, weighted average Operating Partnership units outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . The nine months ended September 30, 2016 reflects the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Basic net income per Operating Partnership unit $ 0.18 0.18 $ 0.55 $ 0.30 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Effect of dilutive shares for diluted net income per Operating Partnership unit 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Operating Partnership unit 246,117,322 233,894,449 244,170,084 226,243,088 Diluted net income per Operating Partnership unit $ 0.18 $ 0.18 $ 0.55 $ 0.30

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Ground leases. The Company was assigned ground leases in the Borgata Transaction as discussed in Note 3. Such amounts will be paid by the Tenant pursuant to the Master Lease through 2046 (including renewal periods). Estimated minimum lease payments pursuant to the ground leases through 2070 are as follows: (in thousands) Year ending December 31, 2017 $ 1,605 2018 6,688 2019 6,688 2020 7,014 2021 7,027 Thereafter 703,516 Total minimum lease payments $ 732,538 Litigation. In the ordinary course of business, from time to time, the Company expects to be subject to legal claims and administrative proceedings, none of which are currently outstanding, which the Company believes could have, individually or in the aggregate, a material adverse effect on its business, financial condition or results of operations, liquidity or cash flows.

Condensed Consolidating Financi

Condensed Consolidating Financial Information	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Information	CONDENSED CONSOLIDATING FINANCIAL INFORMATION The Operating Partnership’s senior notes were co-issued by MGP Finance Co-Issuer, Inc., a 100% owned finance subsidiary of the Operating Partnership. Obligations to pay principal and interest on the senior notes are currently guaranteed by all of the Operating Partnership’s subsidiaries, other than MGP Finance Co-Issuer, Inc., each of which is directly or indirectly 100% owned by the Operating Partnership. Such guarantees are full and unconditional, and joint and several and are subject to release in accordance with the events described below. Separate condensed financial information for the subsidiary guarantors as of September 30, 2017 and December 31, 2016 and for the three and nine months ended September 30, 2017 and September 30, 2016 are presented below. The guarantee of a subsidiary guarantor will be automatically released upon (i) a sale or other disposition (including by way of consolidation or merger) of the subsidiary guarantor, or the capital stock of the subsidiary guarantor; (ii) the sale or disposition of all or substantially all of the assets of the subsidiary guarantor; (iii) the designation in accordance with the indenture of a subsidiary guarantor as an unrestricted subsidiary; (iv) at such time as such subsidiary guarantor is no longer a subsidiary guarantor or other obligor with respect to any credit facilities or capital markets indebtedness of the Operating Partnership; or (v) defeasance or discharge of the notes. CONSOLIDATING BALANCE SHEET INFORMATION September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Real estate investments, net $ — $ — $ 8,911,648 $ — $ 8,911,648 Cash and cash equivalents 1,138,801 — — — 1,138,801 Tenant and other receivables, net 475 — 5,629 — 6,104 Intercompany 387,115 — — (387,115 ) — Prepaid expenses and other assets 8,890 — — — 8,890 Investments in subsidiaries 8,381,136 — — (8,381,136 ) — Above market lease, asset — — 44,981 — 44,981 $ 9,916,417 $ — $ 8,962,258 $ (8,768,251 ) $ 10,110,424 Debt, net 3,940,803 — — — 3,940,803 Due to MGM Resorts International and affiliates — — 524 — 524 Intercompany — — 387,115 (387,115 ) — Accounts payable, accrued expenses, and other liabilities 6,652 — 5,629 — 12,281 Above market lease, liability — — 47,291 — 47,291 Accrued interest 27,393 — — — 27,393 Distribution payable 101,222 — — — 101,222 Deferred revenue — — 115,195 — 115,195 Deferred income taxes, net — — 25,368 — 25,368 Total liabilities 4,076,070 — 581,122 (387,115 ) 4,270,077 General partner — — — — — Limited partners 5,840,347 — 8,381,136 (8,381,136 ) 5,840,347 Total partners' capital 5,840,347 — 8,381,136 (8,381,136 ) 5,840,347 Total liabilities and partners' capital $ 9,916,417 $ — $ 8,962,258 $ (8,768,251 ) $ 10,110,424 CONSOLIDATING BALANCE SHEET INFORMATION December 31, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Real estate investments, net $ — $ — $ 9,079,678 $ — $ 9,079,678 Cash and cash equivalents 360,492 — — — 360,492 Tenant and other receivables, net 2,059 — 7,444 — 9,503 Intercompany 880,823 — — (880,823 ) — Prepaid expenses and other assets 9,167 — 1,739 — 10,906 Investments in subsidiaries 8,100,942 — — (8,100,942 ) — Above market lease, asset — — 46,161 — 46,161 $ 9,353,483 $ — $ 9,135,022 $ (8,981,765 ) $ 9,506,740 Debt, net 3,621,942 — — — 3,621,942 Due to MGM Resorts International and affiliates — — 166 — 166 Intercompany — — 880,823 (880,823 ) — Accounts payable, accrued expenses, and other liabilities 3,034 — 7,444 — 10,478 Above market lease, liability — — 47,957 — 47,957 Accrued interest 26,137 — — — 26,137 Distribution payable 94,109 — — — 94,109 Deferred revenue — — 72,322 — 72,322 Deferred income taxes, net — — 25,368 — 25,368 Total liabilities 3,745,222 — 1,034,080 (880,823 ) 3,898,479 General partner — — — — — Limited partners 5,608,261 — 8,100,942 (8,100,942 ) 5,608,261 Total partners' capital 5,608,261 — 8,100,942 (8,100,942 ) 5,608,261 Total liabilities and partners' capital $ 9,353,483 $ — $ 9,135,022 $ (8,981,765 ) $ 9,506,740 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Three Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 163,178 $ — $ 163,178 Tenants reimbursements and other — — 19,620 — 19,620 — — 182,798 — 182,798 Expenses Depreciation — — 68,662 — 68,662 Property transactions, net — — 1,662 — 1,662 Property taxes — — 18,983 — 18,983 Amortization of above market lease, net — — 172 — 172 Acquisition-related expenses 1,059 — — — 1,059 General and administrative 2,882 — — — 2,882 3,941 — 89,479 — 93,420 Operating income (loss) (3,941 ) — 93,319 — 89,378 Equity in earnings of subsidiaries 91,831 — — (91,831 ) — Non-operating expense Interest income 1,480 — — — 1,480 Interest expense (45,544 ) — — — (45,544 ) Other non-operating (126 ) — — — (126 ) (44,190 ) — — — (44,190 ) Income (loss) before income taxes 43,700 — 93,319 (91,831 ) 45,188 Provision for income taxes — — (1,488 ) — (1,488 ) Net income (loss) $ 43,700 $ — $ 91,831 $ (91,831 ) $ 43,700 Other comprehensive income (loss) Net income (loss) 43,700 — 91,831 (91,831 ) 43,700 Unrealized gain on cash flow hedges 1,754 — — — 1,754 Comprehensive income (loss) $ 45,454 $ — $ 91,831 $ (91,831 ) $ 45,454 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Nine Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 489,532 $ — $ 489,532 Tenants reimbursements and other — — 61,621 — 61,621 — — 551,153 — 551,153 Expenses Depreciation — — 190,573 — 190,573 Property transactions, net — — 19,104 — 19,104 Property taxes — — 60,112 — 60,112 Amortization of above market lease, net — — 515 — 515 Acquisition-related expenses 1,059 — — — 1,059 General and administrative 8,223 — — — 8,223 9,282 — 270,304 — 279,586 Operating income (loss) (9,282 ) — 280,849 — 271,567 Equity in earnings of subsidiaries 276,946 — — (276,946 ) — Non-operating expense Interest income 3,039 — — — 3,039 Interest expense (134,998 ) — — — (134,998 ) Other non-operating (1,438 ) — — — (1,438 ) (133,397 ) — — — (133,397 ) Income (loss) before income taxes 134,267 — 280,849 (276,946 ) 138,170 Provision for income taxes — — (3,903 ) — (3,903 ) Net income (loss) $ 134,267 $ — $ 276,946 $ (276,946 ) $ 134,267 Other comprehensive income (loss) Net income (loss) 134,267 — 276,946 (276,946 ) 134,267 Unrealized loss on cash flow hedges (2,992 ) — — — (2,992 ) Comprehensive income (loss) $ 131,275 $ — $ 276,946 $ (276,946 ) $ 131,275 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Three Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 154,809 $ — $ 154,809 Tenants reimbursements and other — — 17,690 — 17,690 — — 172,499 — 172,499 Expenses Depreciation — — 54,260 — 54,260 Property transactions, net — — 1,442 — 1,442 Property taxes — — 17,690 — 17,690 Property insurance — — — — — Amortization of above market lease, net — — 114 — 114 Acquisition-related expenses 9,500 — — — 9,500 General and administrative 2,701 — — — 2,701 12,201 — 73,506 — 85,707 Operating income (loss) (12,201 ) — 98,993 — 86,792 Equity in earnings of subsidiaries 98,078 — — (98,078 ) — Non-operating expense Interest expense (42,839 ) — — — (42,839 ) Other non-operating (367 ) — — — (367 ) (43,206 ) — — — (43,206 ) Income (loss) before income taxes 42,671 — 98,993 (98,078 ) 43,586 Provision for income taxes — — (915 ) — (915 ) Net income (loss) $ 42,671 $ — $ 98,078 $ (98,078 ) $ 42,671 Other comprehensive income (loss) Net income (loss) 42,671 — 98,078 (98,078 ) 42,671 Unrealized loss on cash flow hedges — — — — — Comprehensive income (loss) $ 42,671 $ — $ 98,078 $ (98,078 ) $ 42,671 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Nine Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 256,062 $ — $ 256,062 Tenants reimbursements and other — — 27,340 — 27,340 — — 283,402 — 283,402 Expenses Depreciation — — 158,860 — 158,860 Property transactions, net — — 2,651 — 2,651 Property taxes — — 44,231 — 44,231 Property insurance — — 2,943 — 2,943 Amortization of above market lease, net — — 114 — 114 Acquisition-related expenses 10,099 — — — 10,099 General and administrative 6,490 — — — 6,490 16,589 — 208,799 — 225,388 Operating income (loss) (16,589 ) — 74,603 — 58,014 Equity in earnings of subsidiaries 73,688 — — (73,688 ) — Non-operating expense Interest expense (72,314 ) — — — (72,314 ) Other non-operating (439 ) — — — (439 ) (72,753 ) — — — (72,753 ) Income (loss) before income taxes (15,654 ) — 74,603 (73,688 ) (14,739 ) Provision for income taxes — — (915 ) — (915 ) Net income (loss) $ (15,654 ) $ — $ 73,688 $ (73,688 ) $ (15,654 ) Other comprehensive income (loss) Net income (loss) (15,654 ) — 73,688 (73,688 ) (15,654 ) Unrealized loss on cash flow hedges — — — — — Comprehensive income (loss) $ (15,654 ) $ — $ 73,688 $ (73,688 ) $ (15,654 ) CONSOLIDATING STATEMENT OF CASH FLOWS INFORMATION Nine Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Cash flows from operating activities Net cash provided by (used in) operating activities $ (129,495 ) $ — $ 493,350 $ — $ 363,855 Cash flows from investing activities Net cash used in investing activities — — — — — Cash flows from financing activities Proceeds from issuance of debt 350,000 — — — 350,000 Deferred financing costs (5,381 ) — — — (5,381 ) Repayment of bridge facilities — — — — — Repayment of debt principal (33,500 ) — — — (33,500 ) Proceeds from purchase of operating partnership units by MGP 387,548 — — — 387,548 Distributions paid (284,213 ) — — — (284,213 ) Cash received by Parent on behalf of Guarantor Subsidiaries 493,350 — (493,350 ) — — Net cash provided by (used in) financing activities 907,804 — (493,350 ) — 414,454 Cash and cash equivalents Net increase for the period 778,309 — — — 778,309 Balance, beginning of period 360,492 — — — 360,492 Balance, end of period $ 1,138,801 $ — $ — $ — $ 1,138,801 CONSOLIDATING STATEMENT OF CASH FLOWS INFORMATION Nine Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Cash flows from operating activities Net cash provided by (used in) operating activities $ (243,412 ) $ — $ 425,833 $ — $ 182,421 Cash flows from investing activities Capital expenditures for property and equipment funded by Parent (138,987 ) — — — (138,987 ) Net cash used in investing activities (138,987 ) — — — (138,987 ) Cash flows from financing activities Proceeds from issuance of debt 3,700,000 — — — 3,700,000 Deferred financing costs (76,120 ) — — — (76,120 ) Repayment of bridge facilities (4,544,850 ) — — — (4,544,850 ) Repayment of debt principal (16,750 ) — — — (16,750 ) Proceeds from purchase of operating partnership units by MGP 1,132,468 — — — 1,132,468 Distributions paid (56,720 ) — — — (56,720 ) Cash received by Parent on behalf of Guarantor Subsidiaries 425,833 — (425,833 ) — — Net cash transfers from Parent 158,822 — — — 158,822 Net cash provided by (used in) financing activities 722,683 — (425,833 ) — 296,850 Cash and cash equivalents Net increase for the period 340,284 — — — 340,284 Balance, beginning of period — — — — — Balance, end of period $ 340,284 $ — $ — $ — $ 340,284

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS MGM National Harbor Transaction. On September 5, 2017, MGM and MGP entered into a definitive agreement for the purchase of the long-term leasehold interest and real property improvements associated with the MGM National Harbor casino resort (“MGM National Harbor”) by a subsidiary of MGP and the lease of MGM National Harbor back to MGM Resorts. MGM and MGP completed the transaction on October 5, 2017. MGP paid total consideration of approximately $1.1875 billion , consisting of a combination of $462.5 million in cash, the assumption of approximately $425 million of secured indebtedness of MGM National Harbor, LLC which was immediately repaid by MGP on the closing date and the issuance by the Operating Partnership of 9.8 million Operating Partnership units representing $300 million of value based upon the closing price of MGP's Class A shares on September 5, 2017. In connection with the closing, the existing Master Lease between MGM and MGP was amended to add MGM National Harbor, and the annual rent payment to MGP under the Master Lease accordingly increased by $95 million from $661.7 million to $756.7 million , prorated for the remainder of the 2017 lease year. Of the $95 million rent increase, 90% will be added to the fixed rent portion of the rent which contractually grows at 2% per year until 2022, at which time the 2% escalator will be subject to an adjusted net revenue to rent ratio consistent with the Master Lease terms as discussed in Note 5.

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation. The accompanying condensed combined and consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information set forth in the Accounting Standards Codification (“ASC”), as published by the Financial Accounting Standards Board (“FASB”), and with the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. All adjustments (consisting of normal recurring accruals) considered necessary for a fair statement of results for the interim period have been included. For periods prior to the IPO Date, the accompanying condensed combined and consolidated financial statements of MGP represent the IPO Properties, which were controlled by MGM, and have been determined to be MGP’s Predecessor for accounting purposes (the “Predecessor”). The accompanying condensed combined and consolidated financial statements include Predecessor financial statements that have been “carved out” of MGM’s consolidated financial statements and reflect significant assumptions and allocations. The financial statements do not fully reflect what the Predecessor’s results of operations, financial position and cash flows would have been if the Predecessor had been a stand-alone company during the periods presented. As a result, historical financial information is not necessarily indicative of MGP’s future results of operations, financial position and cash flows. For periods subsequent to the IPO Date, the accompanying combined and consolidated financial statements of MGP represent the results of operations, financial positions and cash flows of MGP and the Operating Partnership, including their respective subsidiaries. The accompanying combined and consolidated financial statements of the Operating Partnership represent the results of operation, financial positions, and cash flows of the Operating Partnership including its subsidiaries. The accompanying condensed combined and consolidated financial statements and related notes should be read in conjunction with the audited financial statements and notes thereto included in the Company's most recent Annual Report on Form 10-K.
Principles of consolidation	Principles of consolidation. The Company identifies entities for which control is achieved through means other than voting rights and to determine which business enterprise is the primary beneficiary of variable interest entities (“VIEs”). A VIE is an entity in which either (i) the equity investors as a group, if any, lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance or (ii) the equity investment at risk is insufficient to finance that entity’s activities without additional subordinated financial support. The Company identifies the primary beneficiary of a VIE as the enterprise that has both of the following characteristics: (i) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and (ii) the obligation to absorb losses or receive benefits of the VIE that could potentially be significant to the entity. The Company consolidates its investment in a VIE when it determines that it is its primary beneficiary. The Company may change its original assessment of a VIE upon subsequent events such as the modification of contractual arrangements that affect the characteristics or adequacy of the entity’s equity investments at risk and the disposition of all or a portion of an interest held by the primary beneficiary. The Company performs this analysis on an ongoing basis. The condensed combined and consolidated financial statements include the accounts of the Operating Partnership, a VIE of which the Company is the primary beneficiary, as well as its wholly owned and majority-owned subsidiaries. The Company’s maximum exposure to loss is the carrying value of the assets and liabilities of the Operating Partnership, which represents all of the Company’s assets and liabilities. As the Company holds what is deemed a majority voting interest in the Operating Partnership through its ownership of the Operating Partnership’s sole general partner, it qualifies for the exemption from providing certain of the required disclosures associated with investments in VIEs. For entities not determined to be VIEs, the Company consolidates such entities in which the Company owns 100% of the equity. For entities in which the Company owns less than 100% of the equity interest, the Company consolidates the entity if it has the direct or indirect ability to control the entities’ activities based upon the terms of the respective entities’ ownership agreements. For these entities, the Company records a noncontrolling interest on the condensed consolidated balance sheets. All intercompany balances and transactions are eliminated in consolidation.
Noncontrolling interest	Noncontrolling interest. The Company presents noncontrolling interest and classifies such interest as a component of consolidated shareholders’ equity, separate from the Company’s Class A shareholders’ equity. Noncontrolling interest in the Company represents Operating Partnership units currently held by subsidiaries of MGM. Net income or loss of the Operating Partnership is allocated to its noncontrolling interest based on the noncontrolling interest’s ownership percentage in the Operating Partnership except for income tax expenses. Ownership percentage is calculated by dividing the number of Operating Partnership units held by the noncontrolling interest by the total Operating Partnership units held by the noncontrolling interest and the Company. Issuance of additional Class A shares and Operating Partnership units changes the ownership interests of both the noncontrolling interest and the Company. Such transactions and the related proceeds are treated as capital transactions. MGM may tender its Operating Partnership units for redemption by the Operating Partnership in exchange for cash equal to the market price of MGP’s Class A shares at the time of redemption or for unregistered Class A shares on a one-for-one basis. Such selection to pay cash or issue Class A shares to satisfy an Operating Partnership unitholder’s redemption request is solely within the control of MGP’s independent conflicts committee.
Use of estimates	Use of estimates. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. The Company’s most significant assumptions and estimates relate to the useful lives of real estate assets, real estate impairment assessments. These estimates are based on historical experience and other assumptions which management believes are reasonable under the circumstances. Management evaluates its estimates on an ongoing basis and makes revisions to these estimates and related disclosures as experience develops or new information becomes known. Actual results could differ from these estimates.
Real estate investments	Real estate investments. Real estate investments consist of land, buildings, improvements and integral equipment. Because the Formation Transactions and the Borgata Transaction (as defined below) represent transactions between entities under common control, such real estate was initially recorded by the Company at MGM’s historical cost basis, less accumulated depreciation (i.e., there was no change in the basis of the contributed assets), as of the IPO Date and the date of the consummation of the Borgata Transaction, respectively. Costs of maintenance and repairs to real estate investments are the responsibility of the Tenant under the Master Lease. Although the Tenant is responsible for all capital expenditures during the term of the Master Lease, if, in the future, a deconsolidation event occurs, the Company will be required to pay the Tenant, should the Tenant so elect, for certain capital improvements that would not constitute “normal tenant improvements” in accordance with U.S. GAAP (“Non-Normal Tenant Improvements”), subject to an initial cap of $100 million in the first year of the Master Lease increasing annually by $75 million each year thereafter. The Company will be entitled to receive additional rent based on the 10 -year Treasury yield plus 600 basis points multiplied by the value of the new capital improvements the Company is required to pay for in connection with a deconsolidation event and such capital improvements will be subject to the terms of the Master Lease. Examples of Non-Normal Tenant Improvements include the costs of structural elements at the properties, including capital improvements that expand the footprint or square footage of any of the properties or extend the useful life of the properties, as well as equipment that would be a necessary improvement at any of the properties, including initial installation of elevators, air conditioning systems or electrical wiring. Such Non-Normal Tenant Improvements are capitalized and depreciated over the asset’s remaining life. Non-Normal Tenant Improvements were $114.7 million as of September 30, 2017 . In accordance with accounting standards governing the impairment or disposal of long-lived assets, the carrying value of long-lived assets, including land, buildings and improvements, land improvements and integral equipment is evaluated whenever events or changes in circumstances indicate that a potential impairment has occurred relative to a given asset or assets. Factors that could result in an impairment review include, but are not limited to, a current period cash flow loss combined with a history of cash flow losses, current cash flows that may be insufficient to recover the investment in the property over the remaining useful life, a projection that demonstrates continuing losses associated with the use of a long-lived asset, significant changes in the manner of use of the assets or significant changes in business strategies. If such circumstances arise, the Company uses an estimate of the undiscounted value of expected future operating cash flows to determine whether the long-lived assets are impaired. If the aggregate undiscounted cash flows plus net proceeds expected from disposition of the asset (if any) are less than the carrying amount of the assets, the resulting impairment charge to be recorded is calculated based on the excess of the carrying value of the assets over the fair value of such assets, with the fair value determined based on an estimate of discounted future cash flows, appraisals or other valuation techniques.
Cash and cash equivalents	Cash and cash equivalents. Cash and cash equivalents include investments and interest bearing instruments with maturities of 90 days or less at the date of acquisition. Such investments are carried at cost, which approximates market value.
Deferred revenue	Deferred revenue. The Company receives nonmonetary consideration related to Non-Normal Tenant Improvements as they automatically become MGP’s property, and recognizes the cost basis of Non-Normal Tenant Improvements as real estate investments and deferred revenue. The Company depreciates the real estate investments over their estimated useful lives and amortizes the deferred revenue as additional rental revenue over the remaining term of the Master Lease once the related real estate assets are placed in service.
Revenue recognition	Revenue recognition. Rental revenue under the Master Lease is recognized on a straight-line basis over the non-cancelable term and reasonably assured renewal periods, which includes the initial lease term of 10 years and all four additional five -year terms under the Master Lease, for all contractual revenues that are determined to be fixed and measurable. The difference between such rental revenue earned and the cash rent due under the provisions of the Master Lease is recorded as deferred rent receivable and included as a component of prepaid expenses and other assets, or as deferred revenue if cash rent due exceeds rental revenue earned. Property tax reimbursements from Tenant arise from the triple-net structure of the Master Lease which provides for the recovery of property taxes, which are paid by the Company on behalf of the Tenant. This revenue is recognized in the same periods as the expense is incurred.
Depreciation and property transactions	Depreciation and property transactions. Depreciation expense is recognized over the useful lives of real estate applying the straight-line method. Useful lives are periodically reviewed. Leased real estate and leasehold improvements are depreciated on a straight-line basis over the following estimated useful lives: Buildings and building improvements 20 to 40 years Land improvements 10 to 20 years Fixtures and integral equipment 3 to 20 years Property transactions, net are comprised of transactions related to long-lived assets, such as normal losses on the disposition of assets.
General and administrative	General and administrative. General and administrative expenses include the salaries and benefits of employees and external consulting costs. In addition, pursuant to a corporate services agreement entered into on the IPO Date between the Operating Partnership and MGM (the “Corporate Services Agreement”), MGM provides the Operating Partnership and its subsidiaries with financial, administrative and operational support services, including accounting and finance support, human resources support, legal and regulatory compliance support, insurance advisory services, internal audit services, governmental affairs monitoring and reporting services, information technology support, construction services and various other support services. MGM is reimbursed for all costs it incurs directly related to providing the services thereunder.
Share-based compensation	Share-based compensation. The Company recognizes share-based compensation awards as compensation expense and includes such expense within general and administrative expense in the condensed combined and consolidated statement of operations. Compensation expense, net of estimated forfeitures, for restricted share unit awards is based on the fair value of MGP’s Class A shares at the date of grant and is generally recognized ratably over the vesting period. For ratable awards, the Company recognized compensation costs for all grants on a straight-line basis over the requisite service period of the entire award. Compensation expense for performance share unit awards, which have market conditions, is based on a Monte Carlo simulation at the date of grant and is generally recognized ratably over the vesting period.
Income tax provision	Income tax provision. For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was 3.3% and 2.8% for the three and nine months ended September 30, 2017 , respectively. The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, the Company determines deferred tax assets and liabilities on the basis of the differences between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. The Company has elected to be treated as a REIT as defined under Section 856(a) of the Internal Revenue Code of 1986, as amended (the “Code”), commencing with its taxable year ended December 31, 2016. To qualify as a REIT, the Company must meet certain organizational, income, asset and distribution tests. Accordingly, except as described below, the Company will generally not be subject to corporate U.S. federal or state income tax to the extent that it makes qualifying distributions of all of its taxable income to its shareholders and provided it satisfies on a continuing basis, through actual investment and operating results, the REIT requirements, including certain asset, income, distribution and share ownership tests. U.S. federal income tax law generally requires that a REIT distribute annually at least 90% of its REIT taxable income, without regard to the deduction for dividends paid and excluding net capital gains, and that it pay taxes at regular corporate income tax rates to the extent that it annually distributes less than 100% of its taxable income. The Company distributed 100% of its taxable income in the taxable year ended December 31, 2016 and anticipates that it will do so again in the taxable year ending December 31, 2017. Accordingly, for periods subsequent to the IPO Date, the accompanying condensed combined and consolidated financial statements do not reflect a provision for federal income taxes. However, the Company may still be subject to federal excise tax, as well as certain state and local income and franchise taxes. The Landlord is required to join in the filing of a New Jersey consolidated corporation business tax return under the New Jersey Casino Control Act and include in such return its income and expenses associated with its New Jersey assets and is thus subject to an entity level tax in New Jersey. Although the consolidated New Jersey return also includes MGM and certain of its subsidiaries, the Company is required to record New Jersey state income taxes in the accompanying financial statements as if the Landlord was taxed for state purposes on a stand-alone basis. The Company and MGM have entered into a tax sharing agreement providing for an allocation of taxes due in the consolidated New Jersey return. Pursuant to this agreement, the Landlord will only be responsible for New Jersey taxes on any gain that may be realized upon a future sale of the New Jersey assets resulting solely from an appreciation in value of such assets over their value on the date they were contributed to the Landlord by a subsidiary of MGM. MGM is responsible for all other taxes reported in the New Jersey consolidated return. Accordingly, the provision for current taxes and the deferred tax liability in the accompanying financial statements are attributable to noncontrolling interest since the payment of such taxes are the responsibility of MGM. The Company was included in the consolidated or unitary income tax returns of MGM for all Predecessor periods. In the accompanying financial statements, the Predecessor periods reflect an allocation of income taxes from MGM as if the Predecessor had filed a separate tax return in those periods.
Net income per share or unit	Net income per share. Basic net income per share includes the weighted average number of Class A shares outstanding during the period. Dilutive net income per share includes the weighted average number of Class A shares and the dilutive effect of share-based compensation awards outstanding during the period, when such awards are dilutive. Net income per unit. Basic net income per unit includes the weighted average number of Operating Partnership units outstanding during the period. Dilutive net income per unit includes the weighted average number of Operating Partnership units and the dilutive effect of share-based compensation awards outstanding during the period, when such awards are dilutive.
Deferred financing costs	Deferred financing costs. Deferred financing costs were incurred in connection with the issuance of the term loan facilities, revolving credit facility and senior notes. Costs incurred in connection with term loan facilities and senior notes are capitalized and offset against the carrying amount of the related indebtedness. These costs are amortized over the term of the related indebtedness, and are included in interest expense in the combined and consolidated statement of operations. Costs incurred in connection with the Operating Partnership’s entrance into the revolving credit facility are capitalized as a component of prepaid expenses and other assets. These costs are amortized over the term of the revolving credit facility, and are included in interest expense in the combined and consolidated statement of operations.
Derivative financial instruments	Derivative financial instruments. The Company accounts for its derivatives in accordance with FASB ASC Topic 815, Derivatives and Hedging , in which all derivative instruments are reflected at fair value as either assets or liabilities. For derivative instruments that are designated and qualify as hedging instruments, the Company records the effective portion of the gain or loss on the hedge instruments as a component of accumulated other comprehensive income. Any ineffective portion of a derivative’s change in fair value is immediately recognized within net income.
Fair value measurements	Fair value measurements . Fair value of financial and nonfinancial assets and liabilities is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. The three-tier hierarchy for inputs used in measuring fair value, which prioritizes the inputs used in the methodologies of measuring fair value for assets and liabilities, is as follows: Level 1—Observable inputs for identical instruments such as quoted market prices; Level 2—Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.) and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs); and Level 3—Unobservable inputs that reflect the Company’s determination of assumptions that market participants would use in pricing the asset or liability. These inputs are developed based on the best information available, including management’s own data. Fair value measurements are utilized for testing of long-lived assets for impairment. Also, the fair value of the Company’s cash and cash equivalents, accounts payable and accrued expenses approximate their carrying value because of the short-term nature of these instruments.
Reportable segment	Reportable segment. The Company’s real estate properties are similar in that they consist of large-scale destination entertainment and leisure resorts and related offerings, whose tenants generally offer casino gaming, hotel, convention, dining, entertainment and retail, are held by a subsidiary of the Operating Partnership, have similar economic characteristics and are governed under a single Master Lease. As such, the properties are reported as one reportable segment.
Concentrations of credit risk	Concentrations of credit risk. All of the Company’s real estate properties have been leased to a wholly owned subsidiary of MGM, and all of MGP’s revenues are derived from the Master Lease. MGM is a publicly traded company and is subject to the filing requirements of the Exchange Act, and is required to file periodic reports on Form 10-K and Form 10-Q with the SEC. Refer to www.edgar.gov for MGM’s publicly available financial information (which financial information is not incorporated by reference herein). Management does not believe there are any other significant concentrations of credit risk.
Geographical risk	Geographical risk. The majority of the Company’s real estate properties are located in Las Vegas, Nevada. Accordingly, future negative trends in local economic activity or natural disasters in this area might have a more significant effect on the Company than a more geographically diversified entity and could have an adverse impact on its financial condition and operating results.
Recently issued accounting standards	Recently issued accounting standards. In August 2017, the FASB issued Accounting Standards Update No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, and interim periods within those years. ASU 2017-12 amends the hedge accounting recognition and presentation requirements in order to improve the transparency and understandability of information about an entity’s risk management activities, and simplifies the application of hedge accounting. The Company is currently assessing the impact that adoption of this guidance will have on its consolidated financial statements and footnote disclosures. In January 2017, the FASB issues Accounting Standards Update No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business (“ASU 2017-01”). ASU 2017-01 clarifies the definition of a business and with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We have elected to early adopt ASU 2017-01 as of January 1, 2017. The adoption of ASU 2017-01 did not have a material impact on the Company's financial statements and footnote disclosures. In January 2017, the Company adopted Accounting Standards Update No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”). ASU 2016-09 simplifies the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The adoption of ASU 2016-09 did not have a material effect on the Company’s financial statements and footnote disclosures. In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842) (“ASU 2016-02”), which replaces the existing guidance in FASB ASC Topic 840, Leases . ASU 2016-02 requires a dual approach for lessee accounting under which a lessee would account for leases as finance leases or operating leases. Both finance leases and operating leases will result in the lessee recognizing a right-of-use (“ROU”) asset and a corresponding lease liability. For finance leases the lessee would recognize interest expense and amortization of the ROU asset and for operating leases the lessee would recognize a straight-line total lease expense. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently in the process of determining the method of adoption and assessing the impact that adoption of this guidance will have on its financial statements and footnote disclosures. In August 2015, the FASB issued Accounting Standards Update No. 2015-14, Revenue From Contracts With Customers (Topic 606): Deferral of the Effective Date , which defers the effective date of Accounting Standards Update No. 2014-09, Revenue From Contracts With Customers (“ASU 2014-09”) to the fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. ASU 2014-09 outlines a new, single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. This new revenue recognition model provides a five-step analysis in determining when and how revenue is recognized. Additionally, the new model will require revenue recognition to depict the transfer of promised goods or services to customers in an amount that reflects the consideration a company expects to receive in exchange for those goods or services. The adoption of ASU 2015-14 will not have a material impact on the Company's financial statements and footnote disclosures.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Estimated Useful Lives of Real Estate Investments	Leased real estate and leasehold improvements are depreciated on a straight-line basis over the following estimated useful lives: Buildings and building improvements 20 to 40 years Land improvements 10 to 20 years Fixtures and integral equipment 3 to 20 years
Schedule of Principal Amount and Fair Value of Other Financial Instruments	The fair values of the Company's financial instruments are as follows: September 30, 2017 Total Level 1 Level 2 Level 3 (in thousands) Assets: Derivative asset - interest rate swaps $ 1,045 $ — $ 1,045 $ — Liabilities: Senior secured credit facility: Senior secured term loan A facility 277,500 277,500 Senior secured term loan B facility 1,826,806 1,826,806 Senior secured revolving credit facility — — $1,050 million 5.625% senior notes, due 2024 1,136,625 1,136,625 $500 million 4.50% senior notes, due 2026 507,500 507,500 $350 million 4.50% senior notes, due 2028 353,938 — 353,938 — Derivative liability - interest rate swaps 2,380 2,380 $ 4,104,749 $ — $ 4,104,749 $ —

Real Estate Investments (Tables

Real Estate Investments (Tables)	9 Months Ended
	Sep. 30, 2017
Real Estate [Abstract]
Schedule of Carrying Value of Real Estate Investments	The carrying value of real estate investments is as follows: September 30, 2017 December 31, 2016 (in thousands) Land $ 4,143,513 $ 4,143,513 Buildings, building improvements, land improvements and integral equipment 7,315,659 7,324,657 11,459,172 11,468,170 Less: Accumulated depreciation (2,547,524 ) (2,388,492 ) $ 8,911,648 $ 9,079,678

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2017
Leases [Abstract]
Summary of Future Noncancelable Minimum Rental Payments under Master Lease	Under the Master Lease, remaining noncancelable minimum rental payments as of September 30, 2017 are as follows: Year ending December 31, (in thousands) 2017 $ 165,425 2018 670,651 2019 682,764 2020 695,119 2021 707,721 2022 662,137 Thereafter 2,099,134 $ 5,682,951

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Debt	Debt consists of the following: September 30, December 31, 2017 2016 (in thousands) Senior secured credit facility: Senior secured term loan A facility $ 277,500 $ 292,500 Senior secured term loan B facility 1,822,250 1,840,750 Senior secured revolving credit facility — — $1,050 million 5.625% senior notes, due 2024 1,050,000 1,050,000 $500 million 4.50% senior notes, due 2026 500,000 500,000 $350 million 4.50% senior notes, due 2028 350,000 — 3,999,750 3,683,250 Less: Unamortized discount and debt issuance costs (58,947 ) (61,308 ) $ 3,940,803 $ 3,621,942
Schedule of Maturities of Debt	Maturities of the principal amount of the Company’s debt as of September 30, 2017 are as follows: Year ending December 31, ( in thousands ) 2017 $ 8,375 2018 33,500 2019 33,500 2020 33,500 2021 247,250 2022 18,500 Thereafter 3,625,125 $ 3,999,750

Derivatives and Hedging Activ26

Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Derivative Instruments	The principal terms of these interest rate swaps at September 30, 2017 are as follows: Effective Date Maturity Date Notional Amount Weighted Average Fixed Rate Fair Value Asset (Liability) (in thousands, except percentages) May 3, 2017 November 30, 2021 $ 500,000 1.764 % $ 1,045 May 3, 2017 November 30, 2021 700,000 1.901 % (2,380 ) $ 1,200,000 $ (1,335 )

Shareholders' Equity and Part27

Shareholders' Equity and Partners' Capital (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Stockholders' Equity	The following table presents MGP's changes in shareholders' equity for the nine months ended September 30, 2017 : Total Class A Shareholders' Equity Noncontrolling Total (in thousands) Balance at January 1, 2017 $ 1,333,817 $ 4,274,444 $ 5,608,261 Net income - January 1, 2017 to September 30, 2017 33,053 101,214 134,267 Other comprehensive loss - cash flow hedges (644 ) (2,348 ) (2,992 ) Share-based compensation 229 714 943 Deemed contribution - tax sharing agreement — 3,903 3,903 Dividends and distributions declared and paid (73,063 ) (218,263 ) (291,326 ) Issuance of Class A shares 329,508 58,040 387,548 Other (87 ) (170 ) (257 ) Balance at September 30, 2017 $ 1,622,813 $ 4,217,534 $ 5,840,347
Schedule of Partners' Capital	The following table presents the Operating Partnership's changes in partners' capital for the nine months ended September 30, 2017 : General Partner Limited Partners Total Partners' Capital (in thousands) Balance at January 1, 2017 $ — $ 5,608,261 $ 5,608,261 Net income - January 1, 2017 to September 30, 2017 — 134,267 134,267 Other comprehensive loss - cash flow hedges — (2,992 ) (2,992 ) Share-based compensation — 943 943 Deemed contribution - tax sharing agreement — 3,903 3,903 Distributions declared and paid — (291,326 ) (291,326 ) Issuance of Operating Partnership units — 387,548 387,548 Other — (257 ) (257 ) Balance at September 30, 2017 $ — $ 5,840,347 $ 5,840,347

Accumulated Other Comprehensi28

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Summary of Accumulated Other Comprehensive Income	The following table summarizes the changes in accumulated other comprehensive income by component for the nine months ended September 30, 2017 (there was no other comprehensive income for the nine months ended September 30, 2016 ): Changes in Fair Value of Effective Cash Flow Hedge Total (in thousands) Balance at December 31, 2016 $ 1,879 $ 1,879 Other comprehensive income before reclassifications 3,932 3,932 Amounts reclassified from accumulated other comprehensive income (6,924 ) (6,924 ) Net current period other comprehensive loss (2,992 ) (2,992 ) Balance at September 30, 2017 (1,113 ) (1,113 ) Accumulated other comprehensive loss attributable to noncontrolling interest 805 805 Accumulated other comprehensive (loss) attributable to Class A shareholders $ (308 ) $ (308 )

Net Income Per Class A Share (T

Net Income Per Class A Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Net Income and Number of Class A Shares Used in the Calculation of Basic and Diluted Income Per Share	The table below provides net income and the number of Class A shares used in the computations of “basic” net income per share, which utilizes the weighted-average number of Class A shares outstanding without regard to dilutive potential Class A shares, and “diluted” net income per share, which includes all such shares. Net income attributable to Class A shares, weighted average Class A shares outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . Net income per share has not been presented for the Class B shareholder as the Class B share is not entitled to any economic rights. The nine months ended September 30, 2016 reflect the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Basic net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.31 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Effect of dilutive shares for diluted net income per Class A share 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Class A share 60,755,186 57,752,163 58,807,948 57,745,665 Diluted net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.30 The table below provides net income and the number of Operating Partnership units used in the computations of “basic” net income per Operating Partnership unit, which utilizes the weighted-average number of Operating Partnership units outstanding without regard to dilutive potential Operating Partnership units, and “diluted” net income per Operating Partnership units, which includes all such Operating Partnership units. Net income attributable to Operating Partnership units, weighted average Operating Partnership units outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . The nine months ended September 30, 2016 reflects the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Basic net income per Operating Partnership unit $ 0.18 0.18 $ 0.55 $ 0.30 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Effect of dilutive shares for diluted net income per Operating Partnership unit 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Operating Partnership unit 246,117,322 233,894,449 244,170,084 226,243,088 Diluted net income per Operating Partnership unit $ 0.18 $ 0.18 $ 0.55 $ 0.30

Net Income Per Operating Patn30

Net Income Per Operating Patnership Unit (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Unit, Basic and Diluted	The table below provides net income and the number of Class A shares used in the computations of “basic” net income per share, which utilizes the weighted-average number of Class A shares outstanding without regard to dilutive potential Class A shares, and “diluted” net income per share, which includes all such shares. Net income attributable to Class A shares, weighted average Class A shares outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . Net income per share has not been presented for the Class B shareholder as the Class B share is not entitled to any economic rights. The nine months ended September 30, 2016 reflect the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Basic net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.31 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per share Numerator: Net income attributable to Class A shares $ 11,025 $ 10,591 $ 33,053 $ 17,544 Denominator: Basic weighted average Class A shares outstanding 60,614,664 57,500,000 58,612,916 57,500,000 Effect of dilutive shares for diluted net income per Class A share 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Class A share 60,755,186 57,752,163 58,807,948 57,745,665 Diluted net income per Class A share $ 0.18 $ 0.18 $ 0.56 $ 0.30 The table below provides net income and the number of Operating Partnership units used in the computations of “basic” net income per Operating Partnership unit, which utilizes the weighted-average number of Operating Partnership units outstanding without regard to dilutive potential Operating Partnership units, and “diluted” net income per Operating Partnership units, which includes all such Operating Partnership units. Net income attributable to Operating Partnership units, weighted average Operating Partnership units outstanding and the effect of dilutive securities outstanding are presented for the three and nine months ended September 30, 2017 and September 30, 2016 . The nine months ended September 30, 2016 reflects the results of operations from MGP from the IPO Date through September 30, 2016. Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Basic net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Basic net income per Operating Partnership unit $ 0.18 0.18 $ 0.55 $ 0.30 Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (in thousands, except share and per share amounts) Diluted net income per Operating Partnership unit Numerator: Net income $ 43,700 $ 42,671 $ 134,267 $ 68,729 Denominator: Basic weighted average Operating Partnership units outstanding 245,976,800 233,642,286 243,975,052 225,997,423 Effect of dilutive shares for diluted net income per Operating Partnership unit 140,522 252,163 195,032 245,665 Weighted average shares for diluted net income per Operating Partnership unit 246,117,322 233,894,449 244,170,084 226,243,088 Diluted net income per Operating Partnership unit $ 0.18 $ 0.18 $ 0.55 $ 0.30

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Estimated Minimum Lease Payments	Estimated minimum lease payments pursuant to the ground leases through 2070 are as follows: (in thousands) Year ending December 31, 2017 $ 1,605 2018 6,688 2019 6,688 2020 7,014 2021 7,027 Thereafter 703,516 Total minimum lease payments $ 732,538

Condensed Consolidating Finan32

Condensed Consolidating Financial Information (Tables)	9 Months Ended
	Sep. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Consolidating Balance Sheet Information	CONSOLIDATING BALANCE SHEET INFORMATION December 31, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Real estate investments, net $ — $ — $ 9,079,678 $ — $ 9,079,678 Cash and cash equivalents 360,492 — — — 360,492 Tenant and other receivables, net 2,059 — 7,444 — 9,503 Intercompany 880,823 — — (880,823 ) — Prepaid expenses and other assets 9,167 — 1,739 — 10,906 Investments in subsidiaries 8,100,942 — — (8,100,942 ) — Above market lease, asset — — 46,161 — 46,161 $ 9,353,483 $ — $ 9,135,022 $ (8,981,765 ) $ 9,506,740 Debt, net 3,621,942 — — — 3,621,942 Due to MGM Resorts International and affiliates — — 166 — 166 Intercompany — — 880,823 (880,823 ) — Accounts payable, accrued expenses, and other liabilities 3,034 — 7,444 — 10,478 Above market lease, liability — — 47,957 — 47,957 Accrued interest 26,137 — — — 26,137 Distribution payable 94,109 — — — 94,109 Deferred revenue — — 72,322 — 72,322 Deferred income taxes, net — — 25,368 — 25,368 Total liabilities 3,745,222 — 1,034,080 (880,823 ) 3,898,479 General partner — — — — — Limited partners 5,608,261 — 8,100,942 (8,100,942 ) 5,608,261 Total partners' capital 5,608,261 — 8,100,942 (8,100,942 ) 5,608,261 Total liabilities and partners' capital $ 9,353,483 $ — $ 9,135,022 $ (8,981,765 ) $ 9,506,740 CONSOLIDATING BALANCE SHEET INFORMATION September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Real estate investments, net $ — $ — $ 8,911,648 $ — $ 8,911,648 Cash and cash equivalents 1,138,801 — — — 1,138,801 Tenant and other receivables, net 475 — 5,629 — 6,104 Intercompany 387,115 — — (387,115 ) — Prepaid expenses and other assets 8,890 — — — 8,890 Investments in subsidiaries 8,381,136 — — (8,381,136 ) — Above market lease, asset — — 44,981 — 44,981 $ 9,916,417 $ — $ 8,962,258 $ (8,768,251 ) $ 10,110,424 Debt, net 3,940,803 — — — 3,940,803 Due to MGM Resorts International and affiliates — — 524 — 524 Intercompany — — 387,115 (387,115 ) — Accounts payable, accrued expenses, and other liabilities 6,652 — 5,629 — 12,281 Above market lease, liability — — 47,291 — 47,291 Accrued interest 27,393 — — — 27,393 Distribution payable 101,222 — — — 101,222 Deferred revenue — — 115,195 — 115,195 Deferred income taxes, net — — 25,368 — 25,368 Total liabilities 4,076,070 — 581,122 (387,115 ) 4,270,077 General partner — — — — — Limited partners 5,840,347 — 8,381,136 (8,381,136 ) 5,840,347 Total partners' capital 5,840,347 — 8,381,136 (8,381,136 ) 5,840,347 Total liabilities and partners' capital $ 9,916,417 $ — $ 8,962,258 $ (8,768,251 ) $ 10,110,424
Consolidating Statement of Operations and Comprehensive Income Information	CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Three Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 163,178 $ — $ 163,178 Tenants reimbursements and other — — 19,620 — 19,620 — — 182,798 — 182,798 Expenses Depreciation — — 68,662 — 68,662 Property transactions, net — — 1,662 — 1,662 Property taxes — — 18,983 — 18,983 Amortization of above market lease, net — — 172 — 172 Acquisition-related expenses 1,059 — — — 1,059 General and administrative 2,882 — — — 2,882 3,941 — 89,479 — 93,420 Operating income (loss) (3,941 ) — 93,319 — 89,378 Equity in earnings of subsidiaries 91,831 — — (91,831 ) — Non-operating expense Interest income 1,480 — — — 1,480 Interest expense (45,544 ) — — — (45,544 ) Other non-operating (126 ) — — — (126 ) (44,190 ) — — — (44,190 ) Income (loss) before income taxes 43,700 — 93,319 (91,831 ) 45,188 Provision for income taxes — — (1,488 ) — (1,488 ) Net income (loss) $ 43,700 $ — $ 91,831 $ (91,831 ) $ 43,700 Other comprehensive income (loss) Net income (loss) 43,700 — 91,831 (91,831 ) 43,700 Unrealized gain on cash flow hedges 1,754 — — — 1,754 Comprehensive income (loss) $ 45,454 $ — $ 91,831 $ (91,831 ) $ 45,454 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Nine Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 489,532 $ — $ 489,532 Tenants reimbursements and other — — 61,621 — 61,621 — — 551,153 — 551,153 Expenses Depreciation — — 190,573 — 190,573 Property transactions, net — — 19,104 — 19,104 Property taxes — — 60,112 — 60,112 Amortization of above market lease, net — — 515 — 515 Acquisition-related expenses 1,059 — — — 1,059 General and administrative 8,223 — — — 8,223 9,282 — 270,304 — 279,586 Operating income (loss) (9,282 ) — 280,849 — 271,567 Equity in earnings of subsidiaries 276,946 — — (276,946 ) — Non-operating expense Interest income 3,039 — — — 3,039 Interest expense (134,998 ) — — — (134,998 ) Other non-operating (1,438 ) — — — (1,438 ) (133,397 ) — — — (133,397 ) Income (loss) before income taxes 134,267 — 280,849 (276,946 ) 138,170 Provision for income taxes — — (3,903 ) — (3,903 ) Net income (loss) $ 134,267 $ — $ 276,946 $ (276,946 ) $ 134,267 Other comprehensive income (loss) Net income (loss) 134,267 — 276,946 (276,946 ) 134,267 Unrealized loss on cash flow hedges (2,992 ) — — — (2,992 ) Comprehensive income (loss) $ 131,275 $ — $ 276,946 $ (276,946 ) $ 131,275 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Three Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 154,809 $ — $ 154,809 Tenants reimbursements and other — — 17,690 — 17,690 — — 172,499 — 172,499 Expenses Depreciation — — 54,260 — 54,260 Property transactions, net — — 1,442 — 1,442 Property taxes — — 17,690 — 17,690 Property insurance — — — — — Amortization of above market lease, net — — 114 — 114 Acquisition-related expenses 9,500 — — — 9,500 General and administrative 2,701 — — — 2,701 12,201 — 73,506 — 85,707 Operating income (loss) (12,201 ) — 98,993 — 86,792 Equity in earnings of subsidiaries 98,078 — — (98,078 ) — Non-operating expense Interest expense (42,839 ) — — — (42,839 ) Other non-operating (367 ) — — — (367 ) (43,206 ) — — — (43,206 ) Income (loss) before income taxes 42,671 — 98,993 (98,078 ) 43,586 Provision for income taxes — — (915 ) — (915 ) Net income (loss) $ 42,671 $ — $ 98,078 $ (98,078 ) $ 42,671 Other comprehensive income (loss) Net income (loss) 42,671 — 98,078 (98,078 ) 42,671 Unrealized loss on cash flow hedges — — — — — Comprehensive income (loss) $ 42,671 $ — $ 98,078 $ (98,078 ) $ 42,671 CONSOLIDATING STATEMENT OF OPERATIONS AND COMPREHENSIVE INCOME INFORMATION Nine Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Revenues Rental revenue $ — $ — $ 256,062 $ — $ 256,062 Tenants reimbursements and other — — 27,340 — 27,340 — — 283,402 — 283,402 Expenses Depreciation — — 158,860 — 158,860 Property transactions, net — — 2,651 — 2,651 Property taxes — — 44,231 — 44,231 Property insurance — — 2,943 — 2,943 Amortization of above market lease, net — — 114 — 114 Acquisition-related expenses 10,099 — — — 10,099 General and administrative 6,490 — — — 6,490 16,589 — 208,799 — 225,388 Operating income (loss) (16,589 ) — 74,603 — 58,014 Equity in earnings of subsidiaries 73,688 — — (73,688 ) — Non-operating expense Interest expense (72,314 ) — — — (72,314 ) Other non-operating (439 ) — — — (439 ) (72,753 ) — — — (72,753 ) Income (loss) before income taxes (15,654 ) — 74,603 (73,688 ) (14,739 ) Provision for income taxes — — (915 ) — (915 ) Net income (loss) $ (15,654 ) $ — $ 73,688 $ (73,688 ) $ (15,654 ) Other comprehensive income (loss) Net income (loss) (15,654 ) — 73,688 (73,688 ) (15,654 ) Unrealized loss on cash flow hedges — — — — — Comprehensive income (loss) $ (15,654 ) $ — $ 73,688 $ (73,688 ) $ (15,654 )
Consolidating Statement of Cash Flows Information	CONSOLIDATING STATEMENT OF CASH FLOWS INFORMATION Nine Months Ended September 30, 2017 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Cash flows from operating activities Net cash provided by (used in) operating activities $ (129,495 ) $ — $ 493,350 $ — $ 363,855 Cash flows from investing activities Net cash used in investing activities — — — — — Cash flows from financing activities Proceeds from issuance of debt 350,000 — — — 350,000 Deferred financing costs (5,381 ) — — — (5,381 ) Repayment of bridge facilities — — — — — Repayment of debt principal (33,500 ) — — — (33,500 ) Proceeds from purchase of operating partnership units by MGP 387,548 — — — 387,548 Distributions paid (284,213 ) — — — (284,213 ) Cash received by Parent on behalf of Guarantor Subsidiaries 493,350 — (493,350 ) — — Net cash provided by (used in) financing activities 907,804 — (493,350 ) — 414,454 Cash and cash equivalents Net increase for the period 778,309 — — — 778,309 Balance, beginning of period 360,492 — — — 360,492 Balance, end of period $ 1,138,801 $ — $ — $ — $ 1,138,801 CONSOLIDATING STATEMENT OF CASH FLOWS INFORMATION Nine Months Ended September 30, 2016 Operating Guarantor Partnership Co-Issuer Subsidiaries Eliminations Consolidated (in thousands) Cash flows from operating activities Net cash provided by (used in) operating activities $ (243,412 ) $ — $ 425,833 $ — $ 182,421 Cash flows from investing activities Capital expenditures for property and equipment funded by Parent (138,987 ) — — — (138,987 ) Net cash used in investing activities (138,987 ) — — — (138,987 ) Cash flows from financing activities Proceeds from issuance of debt 3,700,000 — — — 3,700,000 Deferred financing costs (76,120 ) — — — (76,120 ) Repayment of bridge facilities (4,544,850 ) — — — (4,544,850 ) Repayment of debt principal (16,750 ) — — — (16,750 ) Proceeds from purchase of operating partnership units by MGP 1,132,468 — — — 1,132,468 Distributions paid (56,720 ) — — — (56,720 ) Cash received by Parent on behalf of Guarantor Subsidiaries 425,833 — (425,833 ) — — Net cash transfers from Parent 158,822 — — — 158,822 Net cash provided by (used in) financing activities 722,683 — (425,833 ) — 296,850 Cash and cash equivalents Net increase for the period 340,284 — — — 340,284 Balance, beginning of period — — — — — Balance, end of period $ 340,284 $ — $ — $ — $ 340,284

Business - Narrative (Detail)

Business - Narrative (Detail) $ / shares in Units, $ in Billions	Sep. 11, 2017	Aug. 01, 2016	Apr. 25, 2016	Sep. 30, 2017USD ($)$ / sharesshares
Business And Organization [Line Items]
Ownership interest transferred				100.00%
MGM
Business And Organization [Line Items]
Ownership interest in operating partnership			73.30%	73.30%
MGM | Borgata
Business And Organization [Line Items]
Increase in ownership interest in operating partnership	72.30%	76.30%		72.30%
MGP Operating Partnership
Business And Organization [Line Items]
Deb facilities assumed from Parent | $				$ 4
IPO
Business And Organization [Line Items]
Initial offering price per share (in usd per share) | $ / shares				$ 21
Ownership percentage acquired			26.70%	26.70%
IPO | Borgata
Business And Organization [Line Items]
Reduction in ownership percentage acquired	27.70%	23.70%		27.70%
IPO | Class A Shares
Business And Organization [Line Items]
Shares issued under initial public offering (in shares)				57,500,000
Over-Allotment Option | Class A Shares
Business And Organization [Line Items]
Shares issued under initial public offering (in shares)				7,500,000
Operating Partnership Units to MGP's Class A Shares
Business And Organization [Line Items]
Operating Partnership unit conversion				1

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Narrative (Detail)	3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segmentterm	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Summary Of Significant Accounting Policies [Line Items]
Treasury yield term				10 years
Additional rent, percentage points used in calculation				6.00%
Non-normal tenant improvements	$ 114,700,000			$ 114,700,000
Impairment charges	$ 0	$ 0		$ 0	$ 0
Number of times lease term, extended | term				4
Effective tax rate	3.30%			2.80%
Amortization of deferred financing costs	$ 2,800,000			$ 8,400,000
Long-term debt	3,940,803,000			3,940,803,000		$ 3,621,942,000
Debt, fair value	4,100,000,000			$ 4,100,000,000
Number of reportable segments | segment				1
Tenant
Summary Of Significant Accounting Policies [Line Items]
Initial cap of non-normal tenant improvements in the first year				$ 100,000,000
Annual increase in non-normal tenant improvements				$ 75,000,000
Master lease, initial lease term				10 years
Additional period of extension in lease contract				5 years
Corporate Services Agreement
Summary Of Significant Accounting Policies [Line Items]
Expenses incurred	$ 400,000		$ 600,000	$ 1,200,000

Summary of Significant Accoun35

Summary of Significant Accounting Policies - Estimated Useful Lives of Real Estate Investments (Detail)	9 Months Ended
	Sep. 30, 2017
Minimum | Buildings and building improvements
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	20 years
Minimum | Land improvements
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	10 years
Minimum | Fixtures and integral equipment
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	3 years
Maximum | Buildings and building improvements
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	40 years
Maximum | Land improvements
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	20 years
Maximum | Fixtures and integral equipment
Property Subject to or Available for Operating Lease [Line Items]
Estimated useful lives	20 years

Summary of Significant Accoun36

Summary of Significant Accounting Policies - Schedule of Principal Amount and Fair Value of Other Financial Instruments (Detail)	Sep. 30, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset - interest rate swaps	$ 1,045,000
Derivative liability - interest rate swaps	2,380,000
Liabilities, fair value	4,104,749,000
Fair Value, Inputs, Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	0
Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset - interest rate swaps	1,045,000
Derivative liability - interest rate swaps	2,380,000
Liabilities, fair value	4,104,749,000
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	0
Senior secured term loan A facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	277,500,000
Senior secured term loan A facility | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	277,500,000
Senior secured term loan B facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	1,826,806,000
Senior secured term loan B facility | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	1,826,806,000
Senior secured revolving credit facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	0
Senior secured revolving credit facility | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured credit facility	0
5.625% Senior Notes due 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	1,136,625,000
Aggregate principal amount of senior notes	$ 1,050,000,000
Interest rate on senior notes	5.625%
5.625% Senior Notes due 2024 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal amount of senior notes	$ 1,050,000,000
Interest rate on senior notes	5.625%
5.625% Senior Notes due 2024 | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 1,136,625,000
4.50% Senior Notes due 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	507,500,000
Aggregate principal amount of senior notes	$ 500,000,000
Interest rate on senior notes	4.50%
4.50% Senior Notes due 2026 | Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate principal amount of senior notes	$ 500,000,000
Interest rate on senior notes	4.50%
4.50% Senior Notes due 2026 | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 507,500,000
4.50% Senior Notes due 2028
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	353,938,000
Aggregate principal amount of senior notes	$ 350,000,000
Interest rate on senior notes	4.50%
4.50% Senior Notes due 2028 | Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 353,938,000

Borgata Transaction - Narrative

Borgata Transaction - Narrative (Detail) shares in Millions	Aug. 01, 2016USD ($)ashares	Sep. 30, 2017USD ($)	Apr. 01, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Business combination, liabilities assumed	$ 545,000,000
Total deferred tax liability		$ 25,368,000		$ 25,368,000
Master Lease Base Rent
Business Acquisition [Line Items]
Revised rent payments due under master lease	585,000,000	585,000,000	$ 661,700,000
Borgata Property | Master Lease Increase in Rent
Business Acquisition [Line Items]
Rental revenues under master lease	100,000,000
Borgata Property | Increase in Base Rent
Business Acquisition [Line Items]
Rental revenues under master lease	90,000,000
Borgata Property | Increase in Percentage Rent
Business Acquisition [Line Items]
Rental revenues under master lease	10,000,000
Borgata Property | Master Lease Percentage Rent
Business Acquisition [Line Items]
Revised rent payments due under master lease	$ 65,000,000	65,000,000
Borgata
Business Acquisition [Line Items]
Business combination, operating partnership units issued (in units) | shares	27.4
Business combination, total consideration	$ 1,300,000,000
Total deferred tax liability		$ 25,300,000
Land subject to ground leases | a	11

Real Estate Investments - Sched

Real Estate Investments - Schedule of Carrying Value of Real Estate Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Real Estate Properties [Line Items]
Real estate investments, gross	$ 11,459,172	$ 11,468,170
Less: Accumulated depreciation	(2,547,524)	(2,388,492)
Real estate investments, net	8,911,648	9,079,678
Land
Real Estate Properties [Line Items]
Real estate investments, gross	4,143,513	4,143,513
Buildings, building improvements, land improvements and integral equipment
Real Estate Properties [Line Items]
Real estate investments, gross	$ 7,315,659	$ 7,324,657

Leases - Narrative (Detail)

Leases - Narrative (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)termperiod	Sep. 30, 2016USD ($)	Apr. 01, 2017USD ($)	Aug. 01, 2016USD ($)
Leases [Line Items]
Number of times lease term, extended | term			4
Number of years that the percentage rent is fixed			6 years
Adjusted net revenue to rent ratio			625.00%
Number of years that percentage rent is variable			5 years
Number of periods for calculation of variable rent | period			5
Rental revenues	$ 163,178	$ 154,809	$ 489,532	$ 256,062
Property taxes	18,983	$ 17,690	60,112	$ 44,231
Master Lease Base Rent
Leases [Line Items]
Revised rent payments due under master lease	$ 585,000		$ 585,000		$ 661,700	$ 585,000
Percentage of initial total rent payments due under the master lease			90.00%
Fixed annual rent escalator, percentage	2.00%		2.00%
Number of years that the percentage rent is fixed			6 years
Master Lease Percentage Rent
Leases [Line Items]
Percentage of initial total rent payments due under the master lease			10.00%
Lease fixed amount adjustment multiplier			1.40%
Master Lease Percentage Rent | Borgata Property
Leases [Line Items]
Revised rent payments due under master lease	$ 65,000		$ 65,000			$ 65,000
Master Lease
Leases [Line Items]
Master lease, initial lease term			10 years
Additional period of extension in lease contract			5 years

Leases - Summary of Future Nonc

Leases - Summary of Future Noncancelable Minimum Rental Payments under Master Lease (Detail) $ in Thousands	Sep. 30, 2017USD ($)
Leases [Abstract]
2,017	$ 165,425
2,018	670,651
2,019	682,764
2,020	695,119
2,021	707,721
2,022	662,137
Thereafter	2,099,134
Total	$ 5,682,951

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Detail) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term debt, Gross	$ 3,999,750,000	$ 3,683,250,000
Less: Unamortized discount and debt issuance costs	(58,947,000)	(61,308,000)
Long-term debt	3,940,803,000	3,621,942,000
Senior secured term loan A facility
Debt Instrument [Line Items]
Senior secured term loan	277,500,000	292,500,000
Senior secured term loan B facility
Debt Instrument [Line Items]
Senior secured term loan	1,822,250,000	1,840,750,000
Senior secured revolving credit facility
Debt Instrument [Line Items]
Long-term debt	0	0
5.625% Senior Notes due 2024
Debt Instrument [Line Items]
Senior notes	1,050,000,000	1,050,000,000
Long-term debt, principal amount	$ 1,050,000,000
Long-term debt, interest rate (as a percent)	5.625%
4.50% Senior Notes due 2026
Debt Instrument [Line Items]
Senior notes	$ 500,000,000	500,000,000
Long-term debt, principal amount	$ 500,000,000
Long-term debt, interest rate (as a percent)	4.50%
4.50% Senior Notes due 2028
Debt Instrument [Line Items]
Senior notes	$ 350,000,000	$ 0
Long-term debt, principal amount	$ 350,000,000
Long-term debt, interest rate (as a percent)	4.50%

Debt - Narrative (Detail)

Debt - Narrative (Detail) - USD ($)	May 01, 2017	Apr. 20, 2016	Feb. 28, 2017	Sep. 30, 2017	Oct. 25, 2016	Dec. 31, 2016	Oct. 26, 2016	Aug. 12, 2016
Debt Instrument [Line Items]
Debt Instrument, covenant senior secured net debt to adjusted net assets ratio, Maximum						40.00%
Debt instrument, covenant net debt to adjusted net assets ratio, Maximum				60.00%
Debt instrument covenant interest coverage ratio, Minimum				200.00%
Senior secured term loan A facility
Debt Instrument [Line Items]
Senior secured term loan				$ 277,500,000		$ 292,500,000
Senior secured term loan B facility
Debt Instrument [Line Items]
Senior secured term loan				1,822,250,000		1,840,750,000
5.625% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt, principal amount				$ 1,050,000,000
Interest rate				5.625%
Senior notes				$ 1,050,000,000		1,050,000,000
4.500% Senior Notes due 2028
Debt Instrument [Line Items]
Long-term debt, principal amount				$ 350,000,000
Interest rate				4.50%
Senior notes				$ 350,000,000		$ 0
Operating Partnership Credit Agreement | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility amount				600,000,000
Amount drawn under credit facility				$ 0
Operating Partnership Credit Agreement | Senior secured term loan A facility
Debt Instrument [Line Items]
Interest rate				3.985%
Term loan repayment percentage of initial aggregate principal amount				5.00%
Operating Partnership Credit Agreement | Senior secured term loan B facility
Debt Instrument [Line Items]
Percentage of credit facility issued to lenders				99.75%
LIBOR floor rate			0.75%		0.75%
Interest rate				3.485%
Term loan repayment percentage of initial aggregate principal amount				1.00%
Operating Partnership Credit Agreement | LIBOR | Senior secured term loan A facility | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Variable margin					2.75%
Operating Partnership Credit Agreement | LIBOR | Senior secured term loan A facility | Minimum | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Variable margin	2.25%			2.75%	2.25%
LIBOR floor rate	0.00%
Operating Partnership Credit Agreement | LIBOR | Senior secured term loan A facility | Maximum | Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Variable margin				0.75%	2.75%
Operating Partnership Credit Agreement | LIBOR | Senior secured term loan B facility
Debt Instrument [Line Items]
Variable margin			2.50%		3.25%
Operating Partnership Senior Notes | 5.625% Senior Notes due 2024
Debt Instrument [Line Items]
Interest rate		5.625%
Senior notes		$ 1,050,000,000
Debt instrument redemption price percentage		100.00%
Operating Partnership Senior Notes | 4.500% Senior Notes due 2026
Debt Instrument [Line Items]
Interest rate								4.50%
Senior notes								$ 500,000,000
Line of Credit | Senior secured term loan A facility
Debt Instrument [Line Items]
Long-term debt, principal amount				$ 300,000,000
Line of Credit | Senior secured term loan B facility
Debt Instrument [Line Items]
Long-term debt, principal amount				$ 1,850,000,000			$ 1,840,000,000
MGP Operating Partnership | 4.500% Senior Notes due 2026
Debt Instrument [Line Items]
Senior notes								$ 350,000,000
MGP Operating Partnership | 4.500% Senior Notes due 2028
Debt Instrument [Line Items]
Interest rate								4.50%

Debt - Schedule of Maturities o

Debt - Schedule of Maturities of Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
2,017	$ 8,375
2,018	33,500
2,019	33,500
2,020	33,500
2,021	247,250
2,022	18,500
Thereafter	3,625,125
Long-term debt, carrying amount	$ 3,999,750	$ 3,683,250

Derivatives and Hedging Activ44

Derivatives and Hedging Activities - Balance Sheet Location for Derivative Instrument (Details) - USD ($) $ in Thousands	Sep. 30, 2017	May 31, 2017	Dec. 31, 2016
Interest rate swaps
Derivative [Line Items]
Notional Amount		$ 1,200,000
Weighted Average Fixed Rate		1.844%
Designated as Hedging Instrument | Interest rate swaps
Derivative [Line Items]
Notional Amount	$ 1,200,000		$ 500,000
Weighted Average Fixed Rate			1.825%
Fair Value Asset (Liability)	(1,335)		$ 1,900
Designated as Hedging Instrument | Interest Rate Swap - Effective Date May 3, 2017 (1)
Derivative [Line Items]
Notional Amount	$ 500,000
Weighted Average Fixed Rate	1.764%
Fair Value Asset (Liability)	$ 1,045
Designated as Hedging Instrument | Interest Rate Swap - Effective Date May 3, 2017 (2)
Derivative [Line Items]
Notional Amount	$ 700,000
Weighted Average Fixed Rate	1.901%
Fair Value Asset (Liability)	$ (2,380)

Derivatives and Hedging Activ45

Derivatives and Hedging Activities - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	May 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Unrealized gain (loss) on cash flow hedges, net	$ 1,754,000	$ 0	$ (2,992,000)	$ 0
Ineffective portion of the change in fair value derivatives			0
Interest expense	45,544,000	$ 42,839,000	134,998,000	$ 72,314,000
Interest rate swaps
Derivative [Line Items]
Weighted Average Fixed Rate					1.844%
Notional Amount					$ 1,200,000,000
Interest expense	2,000,000		7,400,000
Designated as Hedging Instrument | Interest rate swaps
Derivative [Line Items]
Weighted Average Fixed Rate						1.825%
Notional Amount	1,200,000,000		1,200,000,000			$ 500,000,000
Fair Value Asset (Liability)	$ (1,335,000)		$ (1,335,000)			$ 1,900,000

Shareholders' Equity and Part46

Shareholders' Equity and Partners' Capital - Narrative (Detail) - USD ($) $ / shares in Units, $ in Millions	Sep. 15, 2017	Sep. 11, 2017	Jun. 15, 2017	Mar. 15, 2017	Aug. 01, 2016	Apr. 25, 2016	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
MGM
Stockholders Equity and Partners Capital [Line Items]
Ownership interest in operating partnership						73.30%				73.30%
MGP Operating Partnership
Stockholders Equity and Partners Capital [Line Items]
Cash distribution declared (in usd per unit)	$ 0.3950			$ 0.3875			$ 0.3950		$ 0.3875	$ 1.1775	$ 0.6507
Dividends declared | MGP Operating Partnership
Stockholders Equity and Partners Capital [Line Items]
Dividends/Distributions	$ 101.2		$ 96
Class A Shares
Stockholders Equity and Partners Capital [Line Items]
Common stock shares, par value (in usd per share)							0			0		$ 0
Dividend declared (in usd per share)				$ 0.3875			$ 0.3950	$ 0.3950	$ 0.3875	$ 1.1775	$ 0.6507
Class A Shares | Dividends declared
Stockholders Equity and Partners Capital [Line Items]
Dividends/Distributions							$ 28	$ 22.8
Class B Share
Stockholders Equity and Partners Capital [Line Items]
Percentage of ownership, below which Class B not entitled to voting rights										30.00%
Common stock shares, par value (in usd per share)							$ 0			$ 0
IPO
Stockholders Equity and Partners Capital [Line Items]
Ownership percentage acquired						26.70%				26.70%
IPO | Class A Shares
Stockholders Equity and Partners Capital [Line Items]
Shares sold in offering (in shares)										57,500,000
Public Stock Offering | Class A Shares
Stockholders Equity and Partners Capital [Line Items]
Shares sold in offering (in shares)		13,225,000
Proceeds from offering		$ 387.5
Over-Allotment Option | Class A Shares
Stockholders Equity and Partners Capital [Line Items]
Shares sold in offering (in shares)		1,725,000
Borgata | MGM
Stockholders Equity and Partners Capital [Line Items]
Increase in ownership interest in operating partnership		72.30%			76.30%					72.30%
Borgata | IPO
Stockholders Equity and Partners Capital [Line Items]
Reduction in ownership percentage acquired		27.70%			23.70%					27.70%

Shareholders' Equity and Part47

Shareholders' Equity and Partners' Capital - Changes in Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 5,608,261
Net income	$ 43,700	$ 42,671	134,267	$ (15,654)
Other comprehensive loss - cash flow hedges	1,754	$ 0	(2,992)	$ 0
Share-based compensation			943
Deemed contribution - tax sharing agreement			3,903
Dividends and distributions declared and paid			(291,326)
Issuance of Class A shares			387,548
Other			(257)
Ending balance	5,840,347		5,840,347
Total Class A Shareholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			1,333,817
Net income			33,053
Other comprehensive loss - cash flow hedges			(644)
Share-based compensation			229
Deemed contribution - tax sharing agreement			0
Dividends and distributions declared and paid			(73,063)
Issuance of Class A shares			329,508
Other			(87)
Ending balance	1,622,813		1,622,813
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			4,274,444
Net income			101,214
Other comprehensive loss - cash flow hedges			(2,348)
Share-based compensation			714
Deemed contribution - tax sharing agreement			3,903
Dividends and distributions declared and paid			(218,263)
Issuance of Class A shares			58,040
Other			(170)
Ending balance	$ 4,217,534		$ 4,217,534

Shareholders' Equity and Part48

Shareholders' Equity and Partners' Capital - Changes in Partners' Capital (Details) - USD ($) $ in Thousands	3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance				$ 5,608,261
Net income	$ 43,700	$ 42,671		134,267	$ (15,654)
Other comprehensive loss - cash flow hedges	1,754	0		(2,992)	0
Deemed contribution - tax sharing agreement				3,903
Ending balance	5,840,347			5,840,347
MGP Operating Partnership
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance				5,608,261
Net income	43,700	$ 42,671	$ 68,729	134,267	$ (15,654)
Other comprehensive loss - cash flow hedges				(2,992)
Share-based compensation				943
Deemed contribution - tax sharing agreement				3,903
Distributions declared and paid				(291,326)
Issuance of Operating Partnership units				387,548
Other				(257)
Ending balance	5,840,347			5,840,347
General Partner | MGP Operating Partnership
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance				0
Ending balance	0			0
Limited Partners | MGP Operating Partnership
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance				5,608,261
Net income				134,267
Other comprehensive loss - cash flow hedges				(2,992)
Share-based compensation				943
Deemed contribution - tax sharing agreement				3,903
Distributions declared and paid				(291,326)
Issuance of Operating Partnership units				387,548
Other				(257)
Ending balance	$ 5,840,347			$ 5,840,347

Accumulated Other Comprehensi49

Accumulated Other Comprehensive Income - Rollforward of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Abstract]
Beginning balance			$ 5,608,261
Other comprehensive income before reclassifications			3,932
Amounts reclassified from accumulated other comprehensive income			(6,924)
Other comprehensive income (loss)	$ 1,754	$ 0	(2,992)	$ 0
Ending balance	5,840,347		5,840,347
Accumulated other comprehensive income (loss)	(308)		(308)		$ 445
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Abstract]
Beginning balance			1,879
Ending balance	(1,113)		(1,113)
Changes in Fair Value of Effective Cash Flow Hedge
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Abstract]
Beginning balance			1,879
Other comprehensive income before reclassifications			3,932
Amounts reclassified from accumulated other comprehensive income			(6,924)
Other comprehensive income (loss)			(2,992)
Ending balance	(1,113)		(1,113)
Accumulated other comprehensive income (loss)	(308)		(308)
Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Abstract]
Beginning balance			4,274,444
Other comprehensive income (loss)			(2,348)
Ending balance	4,217,534		4,217,534
Accumulated other comprehensive income (loss)	$ 805		$ 805

Net Income Per Class A Share -

Net Income Per Class A Share - Schedule of Net Income and Number of Class A Shares Used in the Calculation of Basic and Diluted Income Per Share (Detail) - Class A Shares - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income attributable to Class A shares (in usd)	$ 11,025	$ 10,591	$ 33,053	$ 17,544
Denominator:
Basic weighted average Class A shares outstanding	60,614,664	57,500,000	58,612,916	57,500,000
Basic net income per Class A share (in usd per share)	$ 0.18	$ 0.18	$ 0.56	$ 0.31
Numerator:
Net income attributable to Class A shares (in usd)	$ 11,025	$ 10,591	$ 33,053	$ 17,544
Denominator:
Basic weighted average Class A shares outstanding	60,614,664	57,500,000	58,612,916	57,500,000
Effect of dilutive shares for diluted net income per Class A share	140,522	252,163	195,032	245,665
Weighted average shares for diluted net income per Class A share	60,755,186	57,752,163	58,807,948	57,745,665
Diluted net income per Class A share (in usd per share)	$ 0.18	$ 0.18	$ 0.56	$ 0.30

Net Income Per Operating Patn51

Net Income Per Operating Patnership Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Net income (in usd)	$ 43,700	$ 42,671		$ 134,267	$ (15,654)
Numerator:
Net income (in usd)	43,700	42,671		134,267	(15,654)
MGP Operating Partnership
Numerator:
Net income (in usd)	$ 43,700	$ 42,671	$ 68,729	$ 134,267	$ (15,654)
Denominator:
Basic weighted average Operating Partnership units outstanding	245,976,800	233,642,286	225,997,423	243,975,052	225,997,423
Basic net income per Operating Partnership Unit (in usd per unit)	$ 0.18	$ 0.18	$ 0.30	$ 0.55	$ 0.30
Numerator:
Net income (in usd)	$ 43,700	$ 42,671	$ 68,729	$ 134,267	$ (15,654)
Denominator:
Basic weighted average Operating Partnership units outstanding	245,976,800	233,642,286	225,997,423	243,975,052	225,997,423
Effect of dilutive shares for diluted net income per Operating Partnership unit	140,522	252,163	245,665	195,032
Weighted average shares for diluted net income per Operating Partnership unit	246,117,322	233,894,449	226,243,088	244,170,084	226,243,088
Diluted net income per Operating Partnership unit (in usd per unit)	$ 0.18	$ 0.18	$ 0.30	$ 0.55	$ 0.30

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Estimated Minimum Lease Payments (Detail) $ in Thousands	Sep. 30, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,017	$ 1,605
2,018	6,688
2,019	6,688
2,020	7,014
2,021	7,027
Thereafter	703,516
Total minimum lease payments	$ 732,538

Condensed Consolidating Finan53

Condensed Consolidating Financial Information - Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
ASSETS
Real estate investments, net	$ 8,911,648	$ 9,079,678
Cash and cash equivalents	1,138,801	360,492	$ 340,284	$ 0
Tenant and other receivables, net	6,104	9,503
Intercompany	0	0
Prepaid expenses and other assets	8,890	10,906
Investments in subsidiaries	0	0
Above market lease, asset	44,981	46,161
Total assets	10,110,424	9,506,740
Liabilities
Debt, net	3,940,803	3,621,942
Due to MGM Resorts International and affiliates	524	166
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	12,281	10,478
Above market lease, liability	47,291	47,957
Accrued interest	27,393	26,137
Dividend and distribution payable	101,222	94,109
Deferred revenue	115,195	72,322
Deferred income taxes, net	25,368	25,368
Total liabilities	4,270,077	3,898,479
General partner	0	0
Limited partners	5,840,347	5,608,261
Total partners' capital	5,840,347	5,608,261
Total liabilities and shareholders’ equity	10,110,424	9,506,740
Eliminations
ASSETS
Real estate investments, net	0	0
Cash and cash equivalents	0	0	0	0
Tenant and other receivables, net	0	0
Intercompany	(387,115)	(880,823)
Prepaid expenses and other assets	0	0
Investments in subsidiaries	(8,381,136)	(8,100,942)
Above market lease, asset	0	0
Total assets	(8,768,251)	(8,981,765)
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	(387,115)	(880,823)
Accounts payable, accrued expenses and other liabilities	0	0
Above market lease, liability	0	0
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	(387,115)	(880,823)
General partner	0	0
Limited partners	(8,381,136)	(8,100,942)
Total partners' capital	(8,381,136)	(8,100,942)
Total liabilities and shareholders’ equity	(8,768,251)	(8,981,765)
Guarantor Subsidiaries | Reportable Legal Entities
ASSETS
Real estate investments, net	8,911,648	9,079,678
Cash and cash equivalents	0	0	0	0
Tenant and other receivables, net	5,629	7,444
Intercompany	0	0
Prepaid expenses and other assets	0	1,739
Investments in subsidiaries	0	0
Above market lease, asset	44,981	46,161
Total assets	8,962,258	9,135,022
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	524	166
Intercompany	387,115	880,823
Accounts payable, accrued expenses and other liabilities	5,629	7,444
Above market lease, liability	47,291	47,957
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	115,195	72,322
Deferred income taxes, net	25,368	25,368
Total liabilities	581,122	1,034,080
General partner	0	0
Limited partners	8,381,136	8,100,942
Total partners' capital	8,381,136	8,100,942
Total liabilities and shareholders’ equity	8,962,258	9,135,022
MGP Operating Partnership
ASSETS
Real estate investments, net	8,911,648	9,079,678
Cash and cash equivalents	1,138,801	360,492	340,284	0
Tenant and other receivables, net	6,104	9,503
Prepaid expenses and other assets	8,890	10,906
Above market lease, asset	44,981	46,161
Total assets	10,110,424	9,506,740
Liabilities
Debt, net	3,940,803	3,621,942
Due to MGM Resorts International and affiliates	524	166
Accounts payable, accrued expenses and other liabilities	12,281	10,478
Above market lease, liability	47,291	47,957
Accrued interest	27,393	26,137
Dividend and distribution payable	101,222	94,109
Deferred revenue	115,195	72,322
Deferred income taxes, net	25,368	25,368
Total liabilities	4,270,077	3,898,479
General partner	0	0
Limited partners	5,840,347	5,608,261
Total partners' capital	5,840,347	5,608,261
Total liabilities and shareholders’ equity	10,110,424	9,506,740
MGP Operating Partnership | Reportable Legal Entities
ASSETS
Real estate investments, net	0	0
Cash and cash equivalents	1,138,801	360,492	340,284	0
Tenant and other receivables, net	475	2,059
Intercompany	387,115	880,823
Prepaid expenses and other assets	8,890	9,167
Investments in subsidiaries	8,381,136	8,100,942
Above market lease, asset	0	0
Total assets	9,916,417	9,353,483
Liabilities
Debt, net	3,940,803	3,621,942
Due to MGM Resorts International and affiliates	0	0
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	6,652	3,034
Above market lease, liability	0	0
Accrued interest	27,393	26,137
Dividend and distribution payable	101,222	94,109
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	4,076,070	3,745,222
General partner	0	0
Limited partners	5,840,347	5,608,261
Total partners' capital	5,840,347	5,608,261
Total liabilities and shareholders’ equity	9,916,417	9,353,483
Co-Issuer | Reportable Legal Entities
ASSETS
Real estate investments, net	0	0
Cash and cash equivalents	0	0	$ 0	$ 0
Tenant and other receivables, net	0	0
Intercompany	0	0
Prepaid expenses and other assets	0	0
Investments in subsidiaries	0	0
Above market lease, asset	0	0
Total assets	0	0
Liabilities
Debt, net	0	0
Due to MGM Resorts International and affiliates	0	0
Intercompany	0	0
Accounts payable, accrued expenses and other liabilities	0	0
Above market lease, liability	0	0
Accrued interest	0	0
Dividend and distribution payable	0	0
Deferred revenue	0	0
Deferred income taxes, net	0	0
Total liabilities	0	0
General partner	0	0
Limited partners	0	0
Total partners' capital	0	0
Total liabilities and shareholders’ equity	$ 0	$ 0

Condensed Consolidating Finan54

Condensed Consolidating Financial Information - Statement of Operations and Comprehensive Income Information (Details) - USD ($) $ in Thousands	3 Months Ended		5 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Rental revenue	$ 163,178	$ 154,809		$ 489,532	$ 256,062
Tenant reimbursements and other	19,620	17,690		61,621	27,340
Revenues, net	182,798	172,499		551,153	283,402
Expenses
Depreciation	68,662	54,260		190,573	158,860
Property transactions, net	1,662	1,442		19,104	2,651
Property taxes	18,983	17,690		60,112	44,231
Property insurance	0	0		0	2,943
Amortization of above market lease, net	172	114		515	114
Acquisition-related expenses	1,059	9,500		1,059	10,099
General and administrative	2,882	2,701		8,223	6,490
Expenses, net	93,420	85,707		279,586	225,388
Operating income	89,378	86,792		271,567	58,014
Equity in earnings of subsidiaries	0	0		0	0
Non-operating income (expense)
Interest income	1,480	0		3,039	0
Interest expense	(45,544)	(42,839)		(134,998)	(72,314)
Other non-operating	(126)	(367)		(1,438)	(439)
Non-operating income (expense)	(44,190)	(43,206)		(133,397)	(72,753)
Income (loss) before income taxes	45,188	43,586		138,170	(14,739)
Provision for income taxes	(1,488)	(915)		(3,903)	(915)
Net income (loss)	43,700	42,671		134,267	(15,654)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	1,754	0		(2,992)	0
Comprehensive income (loss)	45,454	42,671		131,275	(15,654)
Eliminations
Revenues
Rental revenue	0	0		0	0
Tenant reimbursements and other	0	0		0	0
Revenues, net	0	0		0	0
Expenses
Depreciation	0	0		0	0
Property transactions, net	0	0		0	0
Property taxes	0	0		0	0
Property insurance		0			0
Amortization of above market lease, net	0	0		0	0
Acquisition-related expenses	0	0		0	0
General and administrative	0	0		0	0
Expenses, net	0	0		0	0
Operating income	0	0		0	0
Equity in earnings of subsidiaries	(91,831)	(98,078)		(276,946)	(73,688)
Non-operating income (expense)
Interest income	0			0
Interest expense	0	0		0	0
Other non-operating	0	0		0	0
Non-operating income (expense)	0	0		0	0
Income (loss) before income taxes	(91,831)	(98,078)		(276,946)	(73,688)
Provision for income taxes	0	0		0	0
Net income (loss)	(91,831)	(98,078)		(276,946)	(73,688)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	0	0		0	0
Comprehensive income (loss)	(91,831)	(98,078)		(276,946)	(73,688)
Guarantor Subsidiaries | Reportable Legal Entities
Revenues
Rental revenue	163,178	154,809		489,532	256,062
Tenant reimbursements and other	19,620	17,690		61,621	27,340
Revenues, net	182,798	172,499		551,153	283,402
Expenses
Depreciation	68,662	54,260		190,573	158,860
Property transactions, net	1,662	1,442		19,104	2,651
Property taxes	18,983	17,690		60,112	44,231
Property insurance		0			2,943
Amortization of above market lease, net	172	114		515	114
Acquisition-related expenses	0	0		0	0
General and administrative	0	0		0	0
Expenses, net	89,479	73,506		270,304	208,799
Operating income	93,319	98,993		280,849	74,603
Equity in earnings of subsidiaries	0	0		0	0
Non-operating income (expense)
Interest income	0			0
Interest expense	0	0		0	0
Other non-operating	0	0		0	0
Non-operating income (expense)	0	0		0	0
Income (loss) before income taxes	93,319	98,993		280,849	74,603
Provision for income taxes	(1,488)	(915)		(3,903)	(915)
Net income (loss)	91,831	98,078		276,946	73,688
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	0	0		0	0
Comprehensive income (loss)	91,831	98,078		276,946	73,688
MGP Operating Partnership
Revenues
Rental revenue	163,178	154,809		489,532	256,062
Tenant reimbursements and other	19,620	17,690		61,621	27,340
Revenues, net	182,798	172,499		551,153	283,402
Expenses
Depreciation	68,662	54,260		190,573	158,860
Property transactions, net	1,662	1,442		19,104	2,651
Property taxes	18,983	17,690		60,112	44,231
Property insurance	0	0		0	2,943
Amortization of above market lease, net	172	114		515	114
Acquisition-related expenses	1,059	9,500		1,059	10,099
General and administrative	2,882	2,701		8,223	6,490
Expenses, net	93,420	85,707		279,586	225,388
Operating income	89,378	86,792		271,567	58,014
Non-operating income (expense)
Interest income	1,480	0		3,039	0
Interest expense	(45,544)	(42,839)		(134,998)	(72,314)
Other non-operating	(126)	(367)		(1,438)	(439)
Non-operating income (expense)	(44,190)	(43,206)		(133,397)	(72,753)
Income (loss) before income taxes	45,188	43,586		138,170	(14,739)
Provision for income taxes	(1,488)	(915)		(3,903)	(915)
Net income (loss)	43,700	42,671	$ 68,729	134,267	(15,654)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	1,754	0		(2,992)	0
Comprehensive income (loss)	45,454	42,671		131,275	(15,654)
MGP Operating Partnership | Reportable Legal Entities
Revenues
Rental revenue	0	0		0	0
Tenant reimbursements and other	0	0		0	0
Revenues, net	0	0		0	0
Expenses
Depreciation	0	0		0	0
Property transactions, net	0	0		0	0
Property taxes	0	0		0	0
Property insurance		0			0
Amortization of above market lease, net	0	0		0	0
Acquisition-related expenses	1,059	9,500		1,059	10,099
General and administrative	2,882	2,701		8,223	6,490
Expenses, net	3,941	12,201		9,282	16,589
Operating income	(3,941)	(12,201)		(9,282)	(16,589)
Equity in earnings of subsidiaries	91,831	98,078		276,946	73,688
Non-operating income (expense)
Interest income	1,480			3,039
Interest expense	(45,544)	(42,839)		(134,998)	(72,314)
Other non-operating	(126)	(367)		(1,438)	(439)
Non-operating income (expense)	(44,190)	(43,206)		(133,397)	(72,753)
Income (loss) before income taxes	43,700	42,671		134,267	(15,654)
Provision for income taxes	0	0		0	0
Net income (loss)	43,700	42,671		134,267	(15,654)
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	1,754	0			0
Comprehensive income (loss)	45,454	42,671		131,275	(15,654)
Co-Issuer | Reportable Legal Entities
Revenues
Rental revenue	0	0		0	0
Tenant reimbursements and other	0	0		0	0
Revenues, net	0	0		0	0
Expenses
Depreciation	0	0		0	0
Property transactions, net	0	0		0	0
Property taxes	0	0		0	0
Property insurance		0			0
Amortization of above market lease, net	0	0		0	0
Acquisition-related expenses	0	0		0	0
General and administrative	0	0		0	0
Expenses, net	0	0		0	0
Operating income	0	0		0	0
Equity in earnings of subsidiaries	0	0		0	0
Non-operating income (expense)
Interest income	0			0
Interest expense	0	0		0	0
Other non-operating	0	0		0	0
Non-operating income (expense)	0	0		0	0
Income (loss) before income taxes	0	0		0	0
Provision for income taxes	0	0		0	0
Net income (loss)	0	0		0	0
Other comprehensive income (loss)
Unrealized gain (loss) on cash flow hedges, net	0	0		0	0
Comprehensive income (loss)	$ 0	$ 0		$ 0	$ 0

Condensed Consolidating Finan55

Condensed Consolidating Financial Information - Statement of Cash Flows Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net cash provided by (used in) operating activities	$ 363,855	$ 182,421
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent	0	(138,987)
Net cash used in investing activities	0	(138,987)
Cash flows from financing activities
Proceeds from issuance of debt	350,000	3,700,000
Deferred financing costs	(5,381)	(76,120)
Repayment of bridge facilities	0	(4,544,850)
Repayment of debt principal	(33,500)	(16,750)
Issuance of Class A shares	404,685	1,207,500
Proceeds from purchase of Operating Partnership units by MGP	387,548	1,132,468
Class A share issuance costs	(17,137)	(75,032)
Dividends and distributions paid	(284,213)	(56,720)
Cash received by Parent on behalf of Guarantor Subsidiaries	0	0
Net cash transfers from Parent	0	158,822
Net cash provided by financing activities	414,454	296,850
Cash and cash equivalents
Net increase for the period	778,309	340,284
Balance, beginning of period	360,492	0
Balance, end of period	1,138,801	340,284
Eliminations
Cash flows from operating activities
Net cash provided by (used in) operating activities	0	0
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent		0
Net cash used in investing activities	0	0
Cash flows from financing activities
Proceeds from issuance of debt	0	0
Deferred financing costs	0	0
Repayment of bridge facilities	0	0
Repayment of debt principal	0	0
Proceeds from purchase of Operating Partnership units by MGP	0	0
Dividends and distributions paid	0	0
Cash received by Parent on behalf of Guarantor Subsidiaries	0	0
Net cash transfers from Parent		0
Net cash provided by financing activities	0	0
Cash and cash equivalents
Net increase for the period	0	0
Balance, beginning of period	0	0
Balance, end of period	0	0
Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities
Net cash provided by (used in) operating activities	493,350	425,833
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent		0
Net cash used in investing activities	0	0
Cash flows from financing activities
Proceeds from issuance of debt	0	0
Deferred financing costs	0	0
Repayment of bridge facilities	0	0
Repayment of debt principal	0	0
Proceeds from purchase of Operating Partnership units by MGP	0	0
Dividends and distributions paid	0	0
Cash received by Parent on behalf of Guarantor Subsidiaries	(493,350)	(425,833)
Net cash transfers from Parent		0
Net cash provided by financing activities	(493,350)	(425,833)
Cash and cash equivalents
Net increase for the period	0	0
Balance, beginning of period	0	0
Balance, end of period	0	0
MGP Operating Partnership
Cash flows from operating activities
Net cash provided by (used in) operating activities	363,855	182,421
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent	0	(138,987)
Net cash used in investing activities	0	(138,987)
Cash flows from financing activities
Proceeds from issuance of debt	350,000	3,700,000
Deferred financing costs	(5,381)	(76,120)
Repayment of bridge facilities	0	(4,544,850)
Repayment of debt principal	(33,500)	(16,750)
Proceeds from purchase of Operating Partnership units by MGP	387,548	1,132,468
Dividends and distributions paid	(284,213)	(56,720)
Net cash transfers from Parent	0	158,822
Net cash provided by financing activities	414,454	296,850
Cash and cash equivalents
Net increase for the period	778,309	340,284
Balance, beginning of period	360,492	0
Balance, end of period	1,138,801	340,284
MGP Operating Partnership | Reportable Legal Entities
Cash flows from operating activities
Net cash provided by (used in) operating activities	(129,495)	(243,412)
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent		(138,987)
Net cash used in investing activities	0	(138,987)
Cash flows from financing activities
Proceeds from issuance of debt	350,000	3,700,000
Deferred financing costs	(5,381)	(76,120)
Repayment of bridge facilities	0	(4,544,850)
Repayment of debt principal	(33,500)	(16,750)
Proceeds from purchase of Operating Partnership units by MGP	387,548	1,132,468
Dividends and distributions paid	(284,213)	(56,720)
Cash received by Parent on behalf of Guarantor Subsidiaries	493,350	425,833
Net cash transfers from Parent		158,822
Net cash provided by financing activities	907,804	722,683
Cash and cash equivalents
Net increase for the period	778,309	340,284
Balance, beginning of period	360,492	0
Balance, end of period	1,138,801	340,284
Co-Issuer | Reportable Legal Entities
Cash flows from operating activities
Net cash provided by (used in) operating activities	0	0
Cash flows from investing activities
Capital expenditures for property and equipment funded by Parent		0
Net cash used in investing activities	0	0
Cash flows from financing activities
Proceeds from issuance of debt	0	0
Deferred financing costs	0	0
Repayment of bridge facilities	0	0
Repayment of debt principal	0	0
Proceeds from purchase of Operating Partnership units by MGP	0	0
Dividends and distributions paid	0	0
Cash received by Parent on behalf of Guarantor Subsidiaries	0	0
Net cash transfers from Parent		0
Net cash provided by financing activities	0	0
Cash and cash equivalents
Net increase for the period	0	0
Balance, beginning of period	0	0
Balance, end of period	$ 0	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) shares in Millions, $ in Millions	Oct. 05, 2017	Sep. 30, 2017	Apr. 01, 2017	Aug. 01, 2016
Subsequent Event
Subsequent Event [Line Items]
Percentage of initial total rent payments due under the master lease	90.00%
MGM National Harbor LLC | Subsequent Event
Subsequent Event [Line Items]
Business combination, total consideration	$ 1,187.5
Cash payment of consideration	462.5
Assumption of secured indebtedness	$ 425
Operating Partnership units issued in acquisition (in units)	9.8
Operating Partnership units issued in acquisition	$ 300
Master Lease Base Rent
Subsequent Event [Line Items]
Revised rent payments due under master lease		$ 585	$ 661.7	$ 585
Percentage of initial total rent payments due under the master lease		90.00%
Fixed annual rent escalator, percentage		2.00%
Master Lease Base Rent | Subsequent Event
Subsequent Event [Line Items]
Increase in lease obligation	95
Revised rent payments due under master lease	$ 756.7
Fixed annual rent escalator, percentage	2.00%