COMMITMENTS AND CONTINGENCIES	12 Months Ended
COMMITMENTS AND CONTINGENCIES	Dec. 31, 2023
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 obtained, 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 obtained by the criminal actors. The Company has been and continues to notify 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. federal and state 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. In addition, the Company is the subject of investigations by state and federal 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. The Company has incurred, and expects to continue to incur, certain expenses related to the cybersecurity issue, including expenses to respond to, remediate, and investigate this matter. The full scope of the costs and related impacts of this issue, including the extent to which all of the costs will be offset by cybersecurity insurance, has not been determined. 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. MGM Grand Paradise concession contract. Pursuant to the concession contract, MGM Grand Paradise is required to pay (i) a special gaming tax of 35% of gross gaming revenue and a special levy of up to 5% of gross gaming revenue, of which the tax is subject to a minimum annual payment in the form of a special premium in the event the minimum amount is not achieved, (ii) a fixed annual premium, and (iii) a variable premium based on the number of gaming tables and machines. Based upon the approved number of gaming tables and slot machines as of December 31, 2023, the premiums for the above obligations payable to the Macau government are approximately MOP 2.2 billion ($269 million as of December 31, 2023) during each of the next five years ending December 31, 2028, and approximately MOP 8.7 billion ($1.1 billion as of December 31, 2023) in the aggregate thereafter through the expiration of the gaming concession in December 2032. In addition, MGM Grand Paradise is required to make annual payments in connection with the temporary use of the reverted gaming assets based upon square meters of the reverted casino areas. Such payments will be adjusted with the Macau average price index during the term of the reversion agreement. The annual payment to the Macau government is approximately MOP 45 million ($6 million as of December 31, 2023) during each of the next two years ending December 31, 2025, approximately MOP 148 million ($18 million as of December 31, 2023) during each of the following three years ending December 31, 2028, and approximately MOP 594 million ($74 million as of December 31, 2023) in the aggregate thereafter through the term of the reversion agreement, with each annual payment subject to the Macau average price index adjustment. The minimum required amount of the payments described in (ii) and (iii) above, as well as the payments relating to the use of the reverted gaming assets were accrued as of and at the commencement of the concession contract as an offset to the related intangible asset as further discussed in Note 7. Payments incremental to minimum amounts due or any subsequent changes to the amounts due under such payments are expensed as incurred. The gaming concession also obligates MGM Grand Paradise to invest in various gaming and non-gaming projects and the development of international tourist markets over the ten-year term of the concession in an initial amount of approximately MOP 16.7 billion ($2.1 billion as of December 31, 2023) of which MOP 15 billion ($1.9 billion as of December 31, 2023) was designated for non-gaming projects. In 2023, the non-gaming commitment increased in accordance with the concession contract as a result of market-wide Macau annual gross gaming revenue exceeding MOP 180 billion and, accordingly, the total gaming and non-gaming project commitment over the ten-year term of the concession increased to MOP 19.7 billion ($2.4 billion as of December 31, 2023), of which MOP 18 billion ($2.2 billion as of December 31, 2023) is designated for non-gaming projects. The projects related to the investment are subject to annual review and Macau government approval and, therefore, the timing and magnitude of the projects comprising the investment are subject to change. MGM Grand Paradise submitted the list of investments and projects it intended to carry out in 2024 to the Macau government in the fourth quarter of 2023, which has been approved by the Macau government. The gaming law also requires concessionaires to maintain share capital of at least MOP 5 billion (approximately $622 million as of December 31, 2023), which further required a cash deposit of such amount until commencement of activity under the concession on January 1, 2023 at which point the deposit was available for use in operations, provided that the net asset value of the concessionaire is not at any time less than such amount. 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 MOP 1 billion (approximately $124 million as of December 31, 2023) 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 December 31, 2022, MOP 1 billion (approximately $124 million as of December 31, 2022) of the bank guarantees were secured by pledged cash and, in connection with a release of MOP 300 million of such pledged cash during the year ended December 31, 2023, MOP 700 million of the bank guarantees (approximately $87 million as of December 31, 2023) were secured by pledged cash as of December 31, 2023. Shortfall guarantees. The Company provides shortfall guarantees of the $3.01 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of Bellagio BREIT Venture, the landlord of Bellagio, which matures in 2029, and of the $3.0 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of the landlords of Mandalay Bay and MGM Grand Las Vegas, which matures in 2032 and has an anticipated repayment date of March 2030. The terms of the shortfall guarantees 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 guarantees are accounted for under ASC 460 at fair value; such value is immaterial. MGM/Osaka IR KK guarantees. The Company provides for guarantees to the government of Osaka (1) in the amount of 12.65 billion yen (approximately $89 million as of December 31, 2023) for 50% of Osaka IR KK’s obligations to Osaka under various agreements related to the development of an integrated resort in Osaka, Japan by Osaka IR KK and (2) of an uncapped amount to provide funding to Osaka IR KK, 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. MGM/Osaka IR KK funding commitment. The Company has commitments to fund Osaka IR KK for its proportionate share of the unfinanced portion of Osaka IR KK’s development project, for which the total development cost is currently committed to be 1.27 trillion yen (approximately $9 billion as of December 31, 2023). The amount and timing of funding may vary based upon the progress and scope of the development, the availability and amount of financing to be obtained by Osaka IR KK, and the timing and amount of noncontrolling interest participation. 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 December 31, 2023, $28 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.