Commitments and Contingencies	6 Months Ended
Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 8 — COMMITMENTS AND CONTINGENCIES October 1 litigation. The Company and/or certain of its subsidiaries have been named as defendants in a number of lawsuits related to the October 1, 2017 shooting in Las Vegas. The matters involve in large degree the same legal and factual issues, each case being filed on behalf of individuals who are seeking damages for emotional distress, physical injury, medical expenses, economic damages and/or wrongful death. Lawsuits were first filed in October 2017 and include actions originally filed in the District Court of Clark County, Nevada and in the Superior Court of Los Angeles County, California. In June 2018, the Company removed to federal court all actions that remained pending in California and Nevada state courts. The Company also initiated declaratory relief actions in federal courts in various districts against individuals who had sued or stated an intent to sue. Additional lawsuits related to this incident may be filed in the future. Since February of 2019, the Company and counsel representing plaintiffs in all pending matters and purporting to represent substantially all claimants known to the Company (collectively, the “Claimants”) have been, and continue to be, engaged in mediation efforts to resolve these matters. After multiple mediation sessions over several months, progress has been made, and while mediation is ongoing, the Company believes it is reasonably possible that a settlement will be reached. The related litigation is stayed pending mediation (the “Mediation Stay”) and the Company agreed to toll the statute of limitations to May 15, 2020, with respect to the Claimants. Although the Company continues to believe it is not legally responsible for the perpetrator’s criminal acts, in the interest of avoiding protracted litigation and the related impact on the community, the Company believes it is reasonably possible that continued mediation communications will result in a settlement with respect to the Claimants of approximately $735 million, subject to and depending on obtaining a minimum level of participation with escalators based on greater participation increasing the amount payable up to $800 million in the event of 100% participation. The Company has $751 million of insurance coverage available to fund this potential settlement, which the Company’s insurers have agreed to fund. The Company intends for substantially all Claimants to be covered by the settlement, however, it remains possible that certain Claimants may not join the settlement and/or additional claims may be asserted. The foregoing determination was made in accordance with generally accepted accounting principles, as codified in ASC 450-20, and is not an admission of any liability on the part of the Company or any of its affiliates. If such a settlement is not consummated, the Mediation Stay will be lifted and the Company is currently unable to reliably predict the future developments in, outcome of, and economic costs and other consequences of any such litigation related to this matter. The Company will continue to investigate the factual and legal defenses, and evaluate these matters based on subsequent events, new information and future circumstances. The Company intends to defend against any such lawsuits and ultimately believes it should prevail, but litigation of this type is inherently unpredictable. Although there are significant procedural, factual and legal issues to be resolved that could significantly affect the Company’s belief as to the possibility of liability, the Company currently believes that it is reasonably possible that it could incur liability in connection with certain of these lawsuits. The foregoing determination was made in accordance with generally accepted accounting principles, as codified in ASC 450-20, and is not an admission of any liability on the part of the Company or any of its affiliates. Given that these cases would be in the early stages, and in light of the uncertainties surrounding them, the Company does not currently possess sufficient information to determine a range of reasonably possible liability. The insurance carriers have not expressed a reservation of rights or coverage defense that affects the Company’s evaluation of potential losses in connection with these claims. The Company’s general liability insurance coverage provides, as part of the contractual “duty to defend”, payment of legal fees and associated costs incurred to defend covered lawsuits that are filed arising from the October 1, 2017 shooting in Las Vegas. Payment of such fees and costs is in addition to (and not limited by) the limits of the insurance policies and does not erode the total liability coverage available. Other litigation. The Company is a party to various legal proceedings, most of which relate to routine matters incidental to its business. Management does not believe that the outcome of such proceedings will have a material adverse effect on the Company’s financial position, results of operations or cash flows. Other guarantees. The Company and its subsidiaries are party to various guarantee contracts in the normal course of business, which are generally supported by letters of credit issued by financial institutions. The Company’s senior credit facility limits the amount of letters of credit that can be issued to $250 million, the Operating Partnership’s senior credit facility limits the amount to $75 million, and MGM China’s credit facility limits the amount to $100 million. At June 30, 2019, $12 million in letters of credit were outstanding under the Company’s senior credit facility. No letters of credit were outstanding under the Operating Partnership’s senior credit facility or MGM China’s credit facility at June 30, 2019. The amount of available borrowings under each of the credit facilities are reduced by any outstanding letters of credit. In connection with the Extension Agreement, MGM Grand Paradise provided a bank guarantee in an amount of approximately $102 million to the government of Macau in May 2019 to warrant the fulfillment of labor debts upon the expiration of the Extension Agreement in June 2022.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

NOTE 8 — COMMITMENTS AND CONTINGENCIES

October 1 litigation. The Company and/or certain of its subsidiaries have been named as defendants in a number of lawsuits related to the October 1, 2017 shooting in Las Vegas. The matters involve in large degree the same legal and factual issues, each case being filed on behalf of individuals who are seeking damages for emotional distress, physical injury, medical expenses, economic damages and/or wrongful death. Lawsuits were first filed in October 2017 and include actions originally filed in the District Court of Clark County, Nevada and in the Superior Court of Los Angeles County, California. In June 2018, the Company removed to federal court all actions that remained pending in California and Nevada state courts. The Company also initiated declaratory relief actions in federal courts in various districts against individuals who had sued or stated an intent to sue. Additional lawsuits related to this incident may be filed in the future.

Since February of 2019, the Company and counsel representing plaintiffs in all pending matters and purporting to represent substantially all claimants known to the Company (collectively, the “Claimants”) have been, and continue to be, engaged in mediation efforts to resolve these matters. After multiple mediation sessions over several months, progress has been made, and while mediation is ongoing, the Company believes it is reasonably possible that a settlement will be reached. The related litigation is stayed pending mediation (the “Mediation Stay”) and the Company agreed to toll the statute of limitations to May 15, 2020, with respect to the Claimants. Although the Company continues to believe it is not legally responsible for the perpetrator’s criminal acts, in the interest of avoiding protracted litigation and the related impact on the community, the Company believes it is reasonably possible that continued mediation communications will result in a settlement with respect to the Claimants of approximately $735 million, subject to and depending on obtaining a minimum level of participation with escalators based on greater participation increasing the amount payable up to $800 million in the event of 100% participation. The Company has $751 million of insurance coverage available to fund this potential settlement, which the Company’s insurers have agreed to fund. The Company intends for substantially all Claimants to be covered by the settlement, however, it remains possible that certain Claimants may not join the settlement and/or additional claims may be asserted. The foregoing determination was made in accordance with generally accepted accounting principles, as codified in ASC 450-20, and is not an admission of any liability on the part of the Company or any of its affiliates.

If such a settlement is not consummated, the Mediation Stay will be lifted and the Company is currently unable to reliably predict the future developments in, outcome of, and economic costs and other consequences of any such litigation related to this matter. The Company will continue to investigate the factual and legal defenses, and evaluate these matters based on subsequent events, new information and future circumstances. The Company intends to defend against any such lawsuits and ultimately believes it should prevail, but litigation of this type is inherently unpredictable. Although there are significant procedural, factual and legal issues to be resolved that could significantly affect the Company’s belief as to the possibility of liability, the Company currently believes that it is reasonably possible that it could incur liability in connection with certain of these lawsuits. The foregoing determination was made in accordance with generally accepted accounting principles, as codified in ASC 450-20, and is not an admission of any liability on the part of the Company or any of its affiliates. Given that these cases would be in the early stages, and in light of the uncertainties surrounding them, the Company does not currently possess sufficient information to determine a range of reasonably possible liability. The insurance carriers have not expressed a reservation of rights or coverage defense that affects the Company’s evaluation of potential losses in connection with these claims. The Company’s general liability insurance coverage provides, as part of the contractual “duty to defend”, payment of legal fees and associated costs incurred to defend covered lawsuits that are filed arising from the October 1, 2017 shooting in Las Vegas. Payment of such fees and costs is in addition to (and not limited by) the limits of the insurance policies and does not erode the total liability coverage available.

Other litigation. The Company is a party to various legal proceedings, most of which relate to routine matters incidental to its business. Management does not believe that the outcome of such proceedings will have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Other guarantees. The Company and its subsidiaries are party to various guarantee contracts in the normal course of business, which are generally supported by letters of credit issued by financial institutions. The Company’s senior credit facility limits the amount of letters of credit that can be issued to $250 million, the Operating Partnership’s senior credit facility limits the amount to $75 million, and MGM China’s credit facility limits the amount to $100 million. At June 30, 2019, $12 million in letters of credit were outstanding under the Company’s senior credit facility. No letters of credit were outstanding under the Operating Partnership’s senior credit facility or MGM China’s credit facility at June 30, 2019. The amount of available borrowings under each of the credit facilities are reduced by any outstanding letters of credit.

In connection with the Extension Agreement, MGM Grand Paradise provided a bank guarantee in an amount of approximately $102 million to the government of Macau in May 2019 to warrant the fulfillment of labor debts upon the expiration of the Extension Agreement in June 2022.