Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS MGP As further described in Note 1, pursuant to the master lease with MGP, the Company leases the real estate assets of The Mirage, Luxor, New York-New York, Park MGM, Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, Empire City, MGM National Harbor and MGM Northfield Park from MGP. The annual rent payments under the MGP master lease for the sixth lease year, which commenced on April 1, 2021, increased to $843 million from $828 million, as a result of the fifth 2.0% fixed annual rent escalator that went into effect on April 1, 2021. In March 2021, the Company delivered a notice of redemption covering approximately 37 million Operating Partnership units that it held which was satisfied with aggregate cash proceeds of approximately $1.2 billion. Refer to Note 11 for further discussion of such redemption. In October 2021, MGP acquired the real estate assets of MGM Springfield from the Company for $400 million of cash consideration. MGM Springfield was added to the master lease between the Company and MGP. Following the closing of the transaction, the annual rent payment to MGP increased by $30 million, $27 million of which will be fixed and contractually grow at 2% per year with escalators subject to the tenant meeting an adjusted net revenue to rent ratio. Final regulatory approvals, which were not necessary for the transaction to close, are expected to be received within nine to twelve months following the close of the transaction. Until final regulatory approvals are obtained, the parties will be subject to a trust agreement, which provides for the property to go into a trust (or, at the Company’s option, be returned to the Company) during the interim period in the event that the regulator finds reasonable cause to believe that MGP may not be found suitable. The property will then remain in trust until a final determination regarding MGP’s suitability is made. All intercompany transactions, including transactions under the MGP master lease, have been eliminated in the Company’s consolidation of MGP. The public ownership of MGP’s Class A shares is recognized as noncontrolling interests in the Company’s consolidated financial statements. As further described in Note 1, in August 2021, the Company entered into an agreement with VICI and MGP whereby VICI will acquire MGP in a stock-for-stock transaction. Pursuant to the agreement, MGP Class A shareholders will receive 1.366 shares of newly issued VICI stock in exchange for each Class A share of MGP and the Company will receive 1.366 VICI OP units in exchange for each Operating Partnership unit that the Company holds. The fixed exchange ratio represents an agreed upon price of $43 per share of MGP Class A share to the five-day volume weighted average price of VICI stock as of the close of business on July 30, 2021. In connection with the exchange, VICI OP will redeem the majority of the Company’s VICI OP units for cash consideration of $4.4 billion, with the Company retaining an approximate $370 million ownership interest in VICI OP (based upon the close price of VICI stock as of August 3, 2021). MGP’s Class B share that is held by the Company will be cancelled. As part of the transaction, the Company will enter into an amended and restated master lease with VICI. The transaction is expected to close in the first half of 2022, subject to customary closing conditions, regulatory approvals, and approval by VICI stockholders (which was obtained on October 29, 2021). Bellagio BREIT Venture The Company has a 5% ownership interest in the Bellagio BREIT Venture, which owns the real estate assets of Bellagio and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 8 for further information related to the Bellagio lease. MGP BREIT Venture MGP has a 50.1% ownership interest in the MGP BREIT Venture, which owns the real estate assets of Mandalay Bay and MGM Grand Las Vegas and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 8 for further information related to the Mandalay Bay and MGM Grand Las Vegas lease.