Organization	12 Months Ended
Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	NOTE 1 — ORGANIZATION Organization. MGM Resorts International (the “Company” together with its consolidated subsidiaries) is a Delaware corporation that acts largely as a holding company and, through subsidiaries, owns and operates casino resorts. The Company owns and operates the following integrated casino, hotel and entertainment resorts in Las Vegas, Nevada: Bellagio, MGM Grand Las Vegas, The Mirage, Mandalay Bay, Luxor, New York-New York, Monte Carlo, Excalibur and Circus Circus Las Vegas. Operations at MGM Grand Las Vegas include management of The Signature at MGM Grand Las Vegas, a condominium-hotel consisting of three towers. Along with local investors, the Company owns and operates MGM Grand Detroit in Detroit, Michigan. The Company owns and operates the following resorts in Mississippi: Beau Rivage in Biloxi and Gold Strike in Tunica. Subsequent to its acquisition on August 1, 2016, the Company owns and operates the Borgata Hotel Casino & Spa (“Borgata”), located on Renaissance Pointe in the Marina area of Atlantic City, New Jersey. See Note 4 for additional information on the Borgata transaction. The Company owns and operates Shadow Creek, an exclusive world-class golf course located approximately ten miles north of its Las Vegas Strip resorts, Primm Valley Golf Club at the California/Nevada state line and Fallen Oak golf course in Saucier, Mississippi. Additionally, the Company owns and operates MGM National Harbor in Prince George’s County, Maryland, which opened on December 8, 2016. On April 25, 2016, MGM Growth Properties LLC (“MGP”), a consolidated subsidiary of the Company, completed its initial public offering (“IPO”) of 57,500,000 of its Class A shares representing limited liability company interests (inclusive of the full exercise by the underwriters of their option to purchase 7,500,000 Class A shares) at an initial offering price of $21 per share. In connection with the IPO, the Company and MGP entered into a series of transactions and several agreements that, among other things, set forth the terms and conditions of the IPO and provide a framework for the Company’s relationship with MGP. MGP is organized as an umbrella partnership REIT (commonly referred to as an “UPREIT”) structure in which substantially all of its assets are owned by, and substantially all of its businesses are conducted through, its Operating Partnership subsidiary, MGM Growth Properties Operating Partnership LP (the “Operating Partnership”). MGP contributed the proceeds from the IPO to the Operating Partnership in exchange for 26.7% of the Operating Partnership units representing limited partner interests in the Operating Partnership. The general partner of the Operating Partnership is also a subsidiary of MGP. MGP has two classes of authorized and outstanding voting common shares (collectively, the “shares”): Class A shares and a single Class B share. The Company owns MGP’s Class B share, 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 A shareholders are entitled to one vote per share, while the Company, as the owner of the Class B share, is entitled to an amount of votes representing a majority of the total voting power of MGP’s shares so long as the Company and its controlled affiliates’ (excluding MGP) aggregate beneficial ownership of the combined economic interests in MGP and the Operating Partnership does not fall below 30%. Pursuant to a master contribution agreement entered into in connection with the IPO by and between the Company, MGP and the Operating Partnership, the Company contributed 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 to newly formed subsidiaries and subsequently transferred 100% ownership interest in such subsidiaries to the Operating Partnership in exchange for 73.3% of the Operating Partnership units in the Operating Partnership on the closing date of the IPO. In addition, on August 1, 2016, the Company completed its acquisition of Borgata and subsequently contributed Borgata’s real estate assets to MGP, as discussed in Note 4. As a result of the Borgata transaction, as discussed in Note 20, the Company’s indirect ownership in the Operating Partnership units increased to 76.3% and MGP’s Class A shareholders’ ownership interest in Operating Partnership units was reduced to 23.7%. The Operating Partnership units held by the Company 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. See Note 10 and Note 19 for additional information related to MGP, the IPO and certain other intercompany agreements and debt financing transactions entered into in connection therewith. The Company acquired an additional 4.95% interest in MGM China Holdings Limited (“MGM China”) on September 1, 2016, which increased its ownership to approximately 56%. See Note 14 for additional information. The Company has a controlling interest in MGM China, which owns MGM Grand Paradise, S.A. (“MGM Grand Paradise”), the Macau company that owns and operates the MGM Macau resort and casino and the related gaming subconcession and land concessions, and is in the process of developing an 18 acre site on the Cotai Strip in Macau (“MGM Cotai”). MGM Cotai will be an integrated casino, hotel and entertainment resort with capacity for up to 500 gaming tables and up to 1,500 slots, and featuring approximately 1,500 hotel rooms. The actual number of gaming tables allocated to MGM Cotai will be determined by the Macau government prior to opening, and such allocation is expected to be less than MGM Cotai’s 500 gaming table capacity. The total estimated project budget is $3.3 billion excluding development fees eliminated in consolidation, capitalized interest and land related costs. The Company owns 50% of and manages CityCenter Holdings, LLC (“CityCenter”), located between Bellagio and Monte Carlo. The other 50% of CityCenter is owned by Infinity World Development Corp, a wholly owned subsidiary of Dubai World, a Dubai, United Arab Emirates government decree entity. CityCenter consists of Aria, an integrated casino, hotel and entertainment resort; Mandarin Oriental Las Vegas, a non-gaming boutique hotel; and Vdara, a luxury condominium-hotel. In addition, CityCenter features residential units in the Residences at Mandarin Oriental and Veer. In April 2016, CityCenter closed the sale of The Shops at Crystals (“Crystals”), a retail, dining and entertainment district. See Note 7 and Note 19 for additional information related to CityCenter. The Company and a subsidiary of Anschutz Entertainment Group, Inc. (“AEG”) each own 42.5% of the Las Vegas Arena Company, LLC (“Las Vegas Arena Company”), the entity which owns the T-Mobile Arena, subsequent to the sale of a 7.5% ownership interest by each of the Company and AEG to Athena Arena, LLC on September 1, 2016. The Company manages the T-Mobile Arena, which is located on a parcel of the Company’s land between Frank Sinatra Drive and New York-New York, adjacent to the Las Vegas Strip. The T-Mobile Arena is a 20,000 seat venue designed to host world-class events – from mixed martial arts, boxing, hockey, basketball and bull riding, to high profile awards shows and top-name concerts. T-Mobile Arena commenced operations in April 2016. Effective January 1, 2016, the Company leases the MGM Grand Garden Arena, located adjacent to the MGM Grand Las Vegas, to the Las Vegas Arena Company. See Note 7 and Note 13 for additional information regarding the Company’s investment in the Las Vegas Arena Company. In addition, the Company owns and operates The Park, a dining and entertainment district, which opened in April 2016 and which connects to T-Mobile Arena, New York-New York, Monte Carlo and the Park Theater, a 5,200 seat entertainment venue which opened in December 2016. The Company also has a 50% interest in Grand Victoria. Grand Victoria is a riverboat casino in Elgin, Illinois; an affiliate of Hyatt Gaming owns the other 50% of Grand Victoria and also operates the resort. See Note 7 for additional information regarding the Company’s investment in Grand Victoria. A subsidiary of the Company was awarded a casino license to build and operate MGM Springfield in Springfield, Massachusetts. MGM Springfield will be developed on approximately 14 acres of land in downtown Springfield. The Company’s plans for the resort currently include a casino with approximately 3,000 slots and 100 table games including poker; a 250-room hotel; 100,000 square feet of retail and restaurant space; 44,000 square feet of meeting and event space; and a 3,375 space parking garage, with an expected development and construction cost of approximately $865 million, excluding capitalized interest and land related costs. The Company has two reportable segments: domestic resorts and MGM China. See Note 18 for additional information about the Company’s segments.

NOTE 1 — ORGANIZATION

Organization. MGM Resorts International (the “Company” together with its consolidated subsidiaries) is a Delaware corporation that acts largely as a holding company and, through subsidiaries, owns and operates casino resorts. The Company owns and operates the following integrated casino, hotel and entertainment resorts in Las Vegas, Nevada: Bellagio, MGM Grand Las Vegas, The Mirage, Mandalay Bay, Luxor, New York-New York, Monte Carlo, Excalibur and Circus Circus Las Vegas. Operations at MGM Grand Las Vegas include management of The Signature at MGM Grand Las Vegas, a condominium-hotel consisting of three towers. Along with local investors, the Company owns and operates MGM Grand Detroit in Detroit, Michigan. The Company owns and operates the following resorts in Mississippi: Beau Rivage in Biloxi and Gold Strike in Tunica. Subsequent to its acquisition on August 1, 2016, the Company owns and operates the Borgata Hotel Casino & Spa (“Borgata”), located on Renaissance Pointe in the Marina area of Atlantic City, New Jersey. See Note 4 for additional information on the Borgata transaction. The Company owns and operates Shadow Creek, an exclusive world-class golf course located approximately ten miles north of its Las Vegas Strip resorts, Primm Valley Golf Club at the California/Nevada state line and Fallen Oak golf course in Saucier, Mississippi. Additionally, the Company owns and operates MGM National Harbor in Prince George’s County, Maryland, which opened on December 8, 2016.

On April 25, 2016, MGM Growth Properties LLC (“MGP”), a consolidated subsidiary of the Company, completed its initial public offering (“IPO”) of 57,500,000 of its Class A shares representing limited liability company interests (inclusive of the full exercise by the underwriters of their option to purchase 7,500,000 Class A shares) at an initial offering price of $21 per share. In connection with the IPO, the Company and MGP entered into a series of transactions and several agreements that, among other things, set forth the terms and conditions of the IPO and provide a framework for the Company’s relationship with MGP.

MGP is organized as an umbrella partnership REIT (commonly referred to as an “UPREIT”) structure in which substantially all of its assets are owned by, and substantially all of its businesses are conducted through, its Operating Partnership subsidiary, MGM Growth Properties Operating Partnership LP (the “Operating Partnership”). MGP contributed the proceeds from the IPO to the Operating Partnership in exchange for 26.7% of the Operating Partnership units representing limited partner interests in the Operating Partnership. The general partner of the Operating Partnership is also a subsidiary of MGP. MGP has two classes of authorized and outstanding voting common shares (collectively, the “shares”): Class A shares and a single Class B share. The Company owns MGP’s Class B share, 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 A shareholders are entitled to one vote per share, while the Company, as the owner of the Class B share, is entitled to an amount of votes representing a majority of the total voting power of MGP’s shares so long as the Company and its controlled affiliates’ (excluding MGP) aggregate beneficial ownership of the combined economic interests in MGP and the Operating Partnership does not fall below 30%.

Pursuant to a master contribution agreement entered into in connection with the IPO by and between the Company, MGP and the Operating Partnership, the Company contributed 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 to newly formed subsidiaries and subsequently transferred 100% ownership interest in such subsidiaries to the Operating Partnership in exchange for 73.3% of the Operating Partnership units in the Operating Partnership on the closing date of the IPO. In addition, on August 1, 2016, the Company completed its acquisition of Borgata and subsequently contributed Borgata’s real estate assets to MGP, as discussed in Note 4. As a result of the Borgata transaction, as discussed in Note 20, the Company’s indirect ownership in the Operating Partnership units increased to 76.3% and MGP’s Class A shareholders’ ownership interest in Operating Partnership units was reduced to 23.7%. The Operating Partnership units held by the Company 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. See Note 10 and Note 19 for additional information related to MGP, the IPO and certain other intercompany agreements and debt financing transactions entered into in connection therewith.

The Company acquired an additional 4.95% interest in MGM China Holdings Limited (“MGM China”) on September 1, 2016, which increased its ownership to approximately 56%. See Note 14 for additional information. The Company has a controlling interest in MGM China, which owns MGM Grand Paradise, S.A. (“MGM Grand Paradise”), the Macau company that owns and operates the MGM Macau resort and casino and the related gaming subconcession and land concessions, and is in the process of developing an 18 acre site on the Cotai Strip in Macau (“MGM Cotai”). MGM Cotai will be an integrated casino, hotel and entertainment resort with capacity for up to 500 gaming tables and up to 1,500 slots, and featuring approximately 1,500 hotel rooms. The actual number of gaming tables allocated to MGM Cotai will be determined by the Macau government prior to opening, and such allocation is expected to be less than MGM Cotai’s 500 gaming table capacity. The total estimated project budget is $3.3 billion excluding development fees eliminated in consolidation, capitalized interest and land related costs.

The Company owns 50% of and manages CityCenter Holdings, LLC (“CityCenter”), located between Bellagio and Monte Carlo. The other 50% of CityCenter is owned by Infinity World Development Corp, a wholly owned subsidiary of Dubai World, a Dubai, United Arab Emirates government decree entity. CityCenter consists of Aria, an integrated casino, hotel and entertainment resort; Mandarin Oriental Las Vegas, a non-gaming boutique hotel; and Vdara, a luxury condominium-hotel. In addition, CityCenter features residential units in the Residences at Mandarin Oriental and Veer. In April 2016, CityCenter closed the sale of The Shops at Crystals (“Crystals”), a retail, dining and entertainment district. See Note 7 and Note 19 for additional information related to CityCenter.

The Company and a subsidiary of Anschutz Entertainment Group, Inc. (“AEG”) each own 42.5% of the Las Vegas Arena Company, LLC (“Las Vegas Arena Company”), the entity which owns the T-Mobile Arena, subsequent to the sale of a 7.5% ownership interest by each of the Company and AEG to Athena Arena, LLC on September 1, 2016. The Company manages the T-Mobile Arena, which is located on a parcel of the Company’s land between Frank Sinatra Drive and New York-New York, adjacent to the Las Vegas Strip. The T-Mobile Arena is a 20,000 seat venue designed to host world-class events – from mixed martial arts, boxing, hockey, basketball and bull riding, to high profile awards shows and top-name concerts. T-Mobile Arena commenced operations in April 2016. Effective January 1, 2016, the Company leases the MGM Grand Garden Arena, located adjacent to the MGM Grand Las Vegas, to the Las Vegas Arena Company. See Note 7 and Note 13 for additional information regarding the Company’s investment in the Las Vegas Arena Company. In addition, the Company owns and operates The Park, a dining and entertainment district, which opened in April 2016 and which connects to T-Mobile Arena, New York-New York, Monte Carlo and the Park Theater, a 5,200 seat entertainment venue which opened in December 2016.

The Company also has a 50% interest in Grand Victoria. Grand Victoria is a riverboat casino in Elgin, Illinois; an affiliate of Hyatt Gaming owns the other 50% of Grand Victoria and also operates the resort. See Note 7 for additional information regarding the Company’s investment in Grand Victoria.

A subsidiary of the Company was awarded a casino license to build and operate MGM Springfield in Springfield, Massachusetts. MGM Springfield will be developed on approximately 14 acres of land in downtown Springfield. The Company’s plans for the resort currently include a casino with approximately 3,000 slots and 100 table games including poker; a 250-room hotel; 100,000 square feet of retail and restaurant space; 44,000 square feet of meeting and event space; and a 3,375 space parking garage, with an expected development and construction cost of approximately $865 million, excluding capitalized interest and land related costs.

The Company has two reportable segments: domestic resorts and MGM China. See Note 18 for additional information about the Company’s segments.