COMMITMENTS AND CONTINGENCIES	9 Months Ended
COMMITMENTS AND CONTINGENCIES	Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Cybersecurity litigation, claims, and investigations. In September 2023, through unauthorized access to certain of its U.S. systems, third-party criminal actors accessed, for some of the Company’s customers, personal information (including name, contact information (such as phone number, email address and postal address), gender, date of birth and driver’s license numbers). For a limited number of customers, Social Security numbers and passport numbers were also accessed by the criminal actors. The Company has notified individuals impacted by this issue in accordance with federal and state law. In connection with this cybersecurity issue, the Company became subject to consumer class actions in U.S. and Canadian courts. These class actions assert a variety of common law and statutory claims based on allegations that the Company failed to use reasonable security procedures and practices to safeguard customers’ personal information, and seek monetary and statutory damages, injunctive relief and other related relief. The Company reached a settlement for $45 million to resolve the purported U.S. civil class action litigation related to the 2023 cybersecurity issue and a 2019 cybersecurity issue, which was paid by insurance carriers into a settlement fund in February 2025. The District Court for the District of Nevada approved the parties' settlement in the U.S. class actions and entered judgment in June 2025. In addition, the Company continues to be subject to investigations by state regulators, which also could result in monetary fines and other relief. The Company cannot predict the timing or outcome of any of these potential matters, or whether the Company may be subject to additional legal proceedings, claims, regulatory inquiries, investigations, or enforcement actions. While the Company believes it is reasonably possible that it may incur losses associated with the above-described proceedings, it is not possible to estimate the amount of loss or range of loss, if any, that might result from adverse judgments, settlements, or other resolution given the preliminary stage of these proceedings. Other litigation. The Company is a party to various other 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. Commitments and guarantees. MGM China bank guarantees. In connection with the issuance of the gaming concession in January 2023, bank guarantees were provided to the government of Macau in the amount of MOP1 billion (approximately $125 million as of September 30, 2025) to warrant the fulfillment of labor liabilities and of damages or losses that may result if there is noncompliance with the concession. The guarantees expire 180 days after the end of the concession term. As of September 30, 2025, MOP700 million of the bank guarantees (approximately $87 million as of September 30, 2025) were secured by pledged cash. Bellagio REIT shortfall guarantee. The Company provides a shortfall guarantee of the $3.01 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of the landlord of Bellagio, Bellagio REIT Venture, which is a VIE and a related party, for which such indebtedness matures in 2029. The terms of the shortfall guarantee provide that after the lenders have exhausted certain remedies to collect on the obligations under the indebtedness, the Company would then be responsible for any shortfall between the value of the collateral, which is the real estate assets of the applicable property owned by the landlord, and the debt obligation. The guarantee is accounted for under ASC 460 at fair value; such value is immaterial. MGM Osaka guarantees. The Company provides for guarantees (1) in the amount of JPY12.65 billion (approximately $86 million as of September 30, 2025) for 50% of MGM Osaka’s obligations to Osaka under various agreements related to the venture’s development of an integrated resort in Osaka, Japan and (2) of an uncapped amount to provide funding to MGM Osaka, if necessary, for the completion of the construction and full opening of the integrated resort. The guarantees expire when the obligations relating to the full opening of the integrated resort are fulfilled. The guarantees are accounted for under ASC 460 at fair value; such value is immaterial. Additionally, the Company’s ownership interest in MGM Osaka, which had a carrying value of $432 million as of September 30, 2025, is pledged as collateral for MGM Osaka’s obligations under its credit agreement. MGM Osaka funding commitment. The Company has commitments to fund MGM Osaka of JPY428 billion, of which an estimated amount of approximately JPY361 billion (approximately $2.4 billion as of September 30, 2025) remains to be funded as of September 30, 2025. The amount and timing of funding is expected to change as a result of project progress, inflation, and other factors. During the three and nine months ended September 30, 2025, the Company funded JPY18.4 billion (approximately $123 million) and JPY30.7 billion (approximately $208 million) of the committed amount, respectively. During the three and nine months ended September 30, 2024, the Company funded JPY22.2 billion (approximately $138 million) and JPY25.2 billion (approximately $157 million) of the committed amount, respectively. 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 $1.35 billion. At September 30, 2025, $25 million in letters of credit were outstanding under the Company’s senior credit facility. The amount of available borrowings under the credit facility is reduced by any outstanding letters of credit.