Business	3 Months Ended
Mar. 31, 2018
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 Company has elected to be treated as a real estate investment trust ("REIT") commencing with its taxable year ended December 31, 2016. MGP is a publicly traded REIT engaged through its investment in the Operating Partnership in the real property business, which primarily consists of owning, acquiring and leasing large-scale destination entertainment and leisure resorts, whose tenants generally offer casino gaming, hotel, convention, dining, entertainment and retail. 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. Pursuant to a master lease agreement (the “Master Lease”), a subsidiary of the Operating Partnership (the “Landlord”) leases the real estate assets of The Mirage, Mandalay Bay, Luxor, New York-New York, Monte Carlo (which was rebranded as Park MGM in May 2018), Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, and MGM National Harbor back to a subsidiary of MGM (the “Tenant”). As of March 31, 2018, there were 266,030,918 Operating Partnership units outstanding in the Operating Partnership of which MGM owned 195,134,123 or 73.4% and MGP owns the remaining 26.6%. 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. MGM also has 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, and is consolidated by MGM.

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 Company has elected to be treated as a real estate investment trust ("REIT") commencing with its taxable year ended December 31, 2016.

MGP is a publicly traded REIT engaged through its investment in the Operating Partnership in the real property business, which primarily consists of owning, acquiring and leasing large-scale destination entertainment and leisure resorts, whose tenants generally offer casino gaming, hotel, convention, dining, entertainment and retail. 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. Pursuant to a master lease agreement (the “Master Lease”), a subsidiary of the Operating Partnership (the “Landlord”) leases the real estate assets of The Mirage, Mandalay Bay, Luxor, New York-New York, Monte Carlo (which was rebranded as Park MGM in May 2018), Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, and MGM National Harbor back to a subsidiary of MGM (the “Tenant”).

As of March 31, 2018, there were 266,030,918 Operating Partnership units outstanding in the Operating Partnership of which MGM owned 195,134,123 or 73.4% and MGP owns the remaining 26.6%. 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. MGM also has 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, and is consolidated by MGM.