MGM Resorts International (MGM) 10-Q 3 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 29, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	MGM
Entity Registrant Name	MGM Resorts International
Entity Central Index Key	0000789570
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		490,535,706
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Title of 12(b) Security	Common stock (Par Value $0.01)
Security Exchange Name	NYSE
Entity File Number	001-10362
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-0215232
Entity Address, Address Line One	3600 Las Vegas Boulevard South
Entity Address, City or Town	Las Vegas
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89109
City Area Code	702
Local Phone Number	693-7120
Document Quarterly Report	true
Document Transition Report	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 6,171,512	$ 5,101,637
Accounts receivable, net	360,188	316,502
Inventories	82,346	88,323
Income tax receivable	242,177	243,415
Prepaid expenses and other	227,644	200,782
Total current assets	7,083,867	5,950,659
Property and equipment, net	14,454,032	14,632,091
Other assets
Investments in and advances to unconsolidated affiliates	1,439,454	1,447,043
Goodwill	2,087,458	2,091,278
Other intangible assets, net	3,586,603	3,643,748
Operating lease right-of-use assets, net	8,240,897	8,286,694
Other long-term assets, net	438,456	443,421
Total other assets	15,792,868	15,912,184
Total assets	37,330,767	36,494,934
Current liabilities
Accounts payable	160,894	142,523
Construction payable	24,395	30,149
Accrued interest on long-term debt	175,256	138,832
Other accrued liabilities	1,474,841	1,545,079
Total current liabilities	1,835,386	1,856,583
Deferred income taxes, net	2,154,832	2,153,016
Long-term debt, net	13,245,448	12,376,684
Operating lease liabilities	8,392,216	8,390,117
Other long-term obligations	399,357	472,084
Commitments and contingencies (Note 7)
Redeemable noncontrolling interests	71,009	66,542
Stockholders' equity
Common stock, $.01 par value: authorized 1,000,000,000 shares, issued and outstanding 491,873,793 and 494,317,865 shares	4,919	4,943
Capital in excess of par value	3,569,186	3,439,453
Retained earnings	2,757,941	3,091,007
Accumulated other comprehensive loss	(25,218)	(30,677)
Total MGM Resorts International stockholders' equity	6,306,828	6,504,726
Noncontrolling interests	4,925,691	4,675,182
Total stockholders' equity	11,232,519	11,179,908
Total liabilities and stockholders' equity	$ 37,330,767	$ 36,494,934

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized shares	1,000,000,000	1,000,000,000
Common stock, issued shares	491,873,793	494,317,865
Common stock, outstanding shares	491,873,793	494,317,865

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 1,647,747	$ 2,252,817
Expenses
General and administrative	546,407	574,306
Corporate expense	78,037	143,808
Preopening and start-up expenses	5	122
Property transactions, net	26,071	54,975
Gain on REIT transactions, net	0	(1,491,945)
Depreciation and amortization	290,551	318,290
Total expenses	1,868,858	1,037,720
Income (loss) from unconsolidated affiliates	(25,579)	35,748
Operating income (loss)	(246,690)	1,250,845
Non-operating income (expense)
Interest expense, net of amounts capitalized	(195,295)	(157,137)
Non-operating items from unconsolidated affiliates	(20,836)	(32,621)
Other, net	32,185	(124,264)
Total non-operating income (expense)	(183,946)	(314,022)
Income (loss) before income taxes	(430,636)	936,823
Benefit (provision) for income taxes	94,698	(262,304)
Net income (loss)	(335,938)	674,519
Less: Net loss attributable to noncontrolling interests	4,109	132,350
Net income (loss) attributable to MGM Resorts International	$ (331,829)	$ 806,869
Earnings (loss) per share
Basic	$ (0.69)	$ 1.64
Diluted	$ (0.69)	$ 1.64
Weighted average common shares outstanding
Basic	494,864	495,415
Diluted	494,864	496,984
Casino [Member]
Revenues
Revenues	$ 1,098,633	$ 1,054,026
Expenses
Expenses	551,905	628,670
Rooms [Member]
Revenues
Revenues	198,419	433,951
Expenses
Expenses	104,213	172,609
Food and Beverage [Member]
Revenues
Revenues	157,412	396,709
Expenses
Expenses	135,227	339,636
Entertainment, Retail and Other [Member]
Revenues
Revenues	135,222	269,945
Expenses
Expenses	78,381	199,063
Reimbursed Costs [Member]
Revenues
Revenues	58,061	98,186
Expenses
Expenses	$ 58,061	$ 98,186

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (335,938)	$ 674,519
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(13,022)	28,336
Unrealized gain (loss) on cash flow hedges	15,298	(83,086)
Other comprehensive income (loss)	2,276	(54,750)
Comprehensive income (loss)	(333,662)	619,769
Less: Comprehensive loss attributable to noncontrolling interests	1,579	157,352
Comprehensive income (loss) attributable to MGM Resorts International	$ (332,083)	$ 777,121

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net income (loss)	$ (335,938)	$ 674,519
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	290,551	318,290
Amortization of debt discounts, premiums and issuance costs	9,734	7,935
Loss on early retirement of debt	0	126,743
Provision for credit losses	2,127	21,980
Stock-based compensation	16,549	36,898
Property transactions, net	26,071	54,975
Gain on REIT transaction, net	0	(1,491,945)
Noncash lease expense	44,467	51,096
Loss (income) from unconsolidated affiliates	46,415	(3,127)
Distributions from unconsolidated affiliates	16,294	13,886
Deferred income taxes	(80,293)	277,221
Change in operating assets and liabilities:
Accounts receivable	(45,970)	136,225
Inventories	5,911	(3,322)
Income taxes receivable and payable, net	1,238	(17,295)
Prepaid expenses and other	(27,258)	(40,111)
Accounts payable and accrued liabilities	(23,763)	(577,936)
Other	(33,745)	(8,969)
Net cash used in operating activities	(87,610)	(422,937)
Cash flows from investing activities
Capital expenditures, net of construction payable	(78,914)	(73,110)
Dispositions of property and equipment	505	175
Proceeds from Mandalay Bay and MGM Grand Las Vegas transaction	0	2,455,839
Investments in unconsolidated affiliates	(76,845)	(20,649)
Distributions from unconsolidated affiliates	0	426
Other	342	0
Net cash provided by (used in) investing activities	(154,912)	2,362,681
Cash flows from financing activities
Net borrowings under bank credit facilities – maturities of 90 days or less	125,902	1,289,434
Issuance of long-term debt	749,775	0
Retirement of senior notes	0	(846,724)
Debt issuance costs	(9,212)	(9,339)
Proceeds from issuance of bridge loan facility	0	1,304,625
Dividends paid to common shareholders	(1,237)	(73,904)
Distributions to noncontrolling interest owners	(76,390)	(72,653)
Purchases of common stock	(119,269)	(353,720)
Other	(32,104)	(17,582)
Net cash provided by financing activities	1,313,499	1,744,753
Effect of exchange rate on cash	(1,102)	2,316
Cash and cash equivalents
Net increase for the period	1,069,875	3,686,813
Balance, beginning of period	5,101,637	2,329,604
Balance, end of period	6,171,512	6,016,417
Supplemental cash flow disclosures
Interest paid, net of amounts capitalized	146,631	162,002
Federal, state and foreign income taxes paid (refunds received), net	(2,401)	2,439
Non-cash investing and financing activities
Investment in MGP BREIT Venture	0	802,000
MGP BREIT Venture assumption of bridge loan facility	0	1,304,625
MGM Growth Properties LLC [Member]
Cash flows from financing activities
Issuance of MGM Growth Properties Class A shares, net	$ 676,034	$ 524,616

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	MGP BREIT Venture [Member]	MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Common Stock [Member]	Common Stock [Member]MGP BREIT Venture [Member]	Common Stock [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Capital in Excess of Par Value [Member]	Capital in Excess of Par Value [Member]MGP BREIT Venture [Member]	Capital in Excess of Par Value [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Retained Earnings [Member]	Retained Earnings [Member]MGP BREIT Venture [Member]	Retained Earnings [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member]MGP BREIT Venture [Member]	Accumulated Other Comprehensive Loss [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Total MGM Resorts International Stockholder's Equity [Member]	Total MGM Resorts International Stockholder's Equity [Member]MGP BREIT Venture [Member]	Total MGM Resorts International Stockholder's Equity [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Non-Controlling Interests [Member]	Non-Controlling Interests [Member]MGP BREIT Venture [Member]	Non-Controlling Interests [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]
Beginning Balance at Dec. 31, 2019	$ 12,662,919			$ 5,031			$ 3,531,099			$ 4,201,337			$ (10,202)			$ 7,727,265			$ 4,935,654
Beginning Balance, Shares at Dec. 31, 2019				503,148
Net income (loss)	672,651			$ 0			0			806,869			0			806,869			(134,218)
Currency translation adjustment	28,336			0			0			0			15,807			15,807			12,529
Cash flow hedges	(83,086)			0			0			0			(45,555)			(45,555)			(37,531)
Stock-based compensation	36,898			0			35,626			0			0			35,626			1,272
Issuance of common stock pursuant to stock-based compensation awards	(6,426)			$ 10			(6,436)			0			0			(6,426)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				868
Cash distributions and dividend payable to noncontrolling interest owners	(7,962)		$ (62,389)	$ 0		$ 0	0		$ 0	0		$ 0	0		$ 0	0		$ 0	(7,962)		$ (62,389)
Dividends declared and paid to common shareholders	(73,904)			0			0			(73,904)			0			(73,904)			0
Issuance of restricted stock units	2,142			0			2,142			0			0			2,142			0
Repurchases of common stock	(353,720)			$ (109)			(353,611)			0			0			(353,720)			0
Repurchases of common stock, Shares				(10,861)
Transaction		$ 1,725			$ 0			$ (6,503)			$ 0			$ (59)			$ (6,562)			$ 8,287
Share issuances			507,551			0			64,188			0			646			64,834			442,717
Adjustment of redeemable noncontrolling interest to redemption value	8,070			$ 0			8,070			0			0			8,070			0
Other	(804)			0			(121)			0			(411)			(532)			(272)
Ending Balance at Mar. 31, 2020	13,332,001			$ 4,932			3,274,454			4,934,302			(39,774)			8,173,914			5,158,087
Ending Balance, Shares at Mar. 31, 2020				493,155
Beginning Balance at Dec. 31, 2020	11,179,908			$ 4,943			3,439,453			3,091,007			(30,677)			6,504,726			4,675,182
Beginning Balance, Shares at Dec. 31, 2020				494,318
Net income (loss)	(338,083)			$ 0			0			(331,829)			0			(331,829)			(6,254)
Currency translation adjustment	(13,022)			0			0			0			(7,353)			(7,353)			(5,669)
Cash flow hedges	15,298			0			0			0			7,099			7,099			8,199
Stock-based compensation	16,549			0			15,503			0			0			15,503			1,046
Issuance of common stock pursuant to stock-based compensation awards	(9,344)			$ 7			(9,351)			0			0			(9,344)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				706
Cash distributions and dividend payable to noncontrolling interest owners	(3,112)		(75,895)	$ 0		0	0		0	0		0	0		0	0		0	(3,112)		(75,895)
Dividends declared and paid to common shareholders	(1,237)			0			0			(1,237)			0			(1,237)			0
Repurchases of common stock	(119,269)			$ (31)			(119,238)			0			0			(119,269)			0
Repurchases of common stock, Shares				(3,150)
Share issuances			$ 647,754			$ 0			$ 83,142			$ 0			$ 2,868			$ 86,010			$ 561,744
Redemption of Operating Partnership units	(50,828)			$ 0			171,332			0			5,327			176,659			(227,487)
Adjustment of redeemable noncontrolling interest to redemption value	(9,428)			0			(9,428)			0			0			(9,428)			0
Other	(6,772)			0			(2,227)			0			(2,482)			(4,709)			(2,063)
Ending Balance at Mar. 31, 2021	$ 11,232,519			$ 4,919			$ 3,569,186			$ 2,757,941			$ (25,218)			$ 6,306,828			$ 4,925,691
Ending Balance, Shares at Mar. 31, 2021				491,874

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Dividends declared and paid to common shareholders	$ 0.0025	$ 0.15

Organization

Organization	3 Months Ended
	Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	NOTE 1 — ORGANIZATION Organization. MGM Resorts International (together with its consolidated subsidiaries, unless otherwise indicated or unless the context requires otherwise, the “Company”) is a Delaware corporation that acts largely as a holding company and, through subsidiaries, owns and operates casino resorts . As of March 31, 2021, 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, Park MGM and Excalibur. Operations at MGM Grand Las Vegas include management of The Signature at MGM Grand Las Vegas. The Company owns, along with local investors, and operates MGM Grand Detroit in Detroit, Michigan, MGM National Harbor in Prince George’s County, Maryland, and MGM Springfield in Springfield, Massachusetts. The Company also owns and operates Borgata located on Renaissance Pointe in the Marina area of Atlantic City, New Jersey, Empire City in Yonkers, New York, MGM Northfield Park in Northfield Park, Ohio, and the following resorts in Mississippi: Beau Rivage in Biloxi and Gold Strike in Tunica. Additionally, the Company owns and operates The Park, a dining and entertainment district located between New York-New York and Park MGM, Shadow Creek, an exclusive world-class golf course located approximately ten miles north of its Las Vegas Strip Resorts, and Fallen Oak golf course in Saucier, Mississippi. MGM Growth Properties LLC (“MGP”), a consolidated subsidiary of the Company, 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 MGM Growth Properties Operating Partnership LP (the “Operating Partnership”). 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%. The Company and MGP each hold Operating Partnership units representing limited partner interests in the Operating Partnership. The general partner of the Operating Partnership is a wholly owned subsidiary of MGP. 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 Market Value of a Class A share (as defined in the Operating Partnership’s partnership agreement). The determination of settlement method is at the option of MGP’s independent conflicts committee. As of March 31, 2021, the Company owned 42.1% of the Operating Partnership units, and MGP held the remaining 57.9% ownership interest in the Operating Partnership. Pursuant to a master lease agreement between a subsidiary of the Company and a subsidiary of the Operating Partnership, the Company leases the real estate assets of The Mirage, Luxor, New York-New York, Park MGM, Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, Empire City, MGM National Harbor, and MGM Northfield Park. Pursuant to a lease agreement between a subsidiary of the Company and a venture that is 5% owned by such subsidiary and 95% owned by a subsidiary of Blackstone Real Estate Income Trust, Inc. (“BREIT”, and such venture, the “Bellagio BREIT Venture”), the Company leases the real estate assets of Bellagio . Additionally, pursuant to a lease agreement between a subsidiary of the Company and a venture that is 50.1% owned by a subsidiary of the Operating Partnership and 49.9% by a subsidiary of BREIT (such venture, the “MGP BREIT Venture”), the Company leases the real estate assets of Mandalay Bay and MGM Grand Las Vegas. Refer to Note 6 for further discussion of the leases. The Company has an approximate 56% controlling interest in MGM China Holdings Limited (together with its subsidiaries, “MGM China”), which owns MGM Grand Paradise, S.A. (“MGM Grand Paradise”). MGM Grand Paradise owns and operates the MGM Macau and MGM Cotai, two integrated casino, hotel and entertainment resorts in Macau, as well as the related gaming subconcession and land concessions. The Company owns 50% of and manages CityCenter Holdings, LLC (“CityCenter”), located between Bellagio and Park MGM. 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; and Vdara, a luxury condominium-hotel. See Note 3 for additional information related to CityCenter. The Company owns 50% of BetMGM LLC (“BetMGM”), which provides online sports betting and iGaming in certain jurisdictions in the United States. The other 50% of BetMGM is owned by Entain plc. The Company has three reportable segments: Las Vegas Strip Resorts, Regional Operations and MGM China. See Note 10 for additional information about the Company’s segments. Financial Impact of COVID-19. The spread of the novel 2019 coronavirus (“COVID-19”) and developments surrounding the global pandemic have had, and we expect will continue to have, a significant impact on our business, financial condition, results of operations and cash flows in 2021 and potentially thereafter. In March 2020, all of the Company’s domestic properties were temporarily closed pursuant to state and local government restrictions imposed as a result of COVID-19. Throughout the second and third quarters of 2020, all of the Company’s properties that were temporarily closed re-opened to the public, but continue to operate without certain amenities and subject to certain occupancy limitations, with restrictions varying by jurisdiction and with further temporary re-closures and re-openings occurring for the Company’s properties or portions thereof into the first quarter of 2021. Upon re-opening of the properties, the Company implemented certain measures to mitigate the spread of COVID-19, including limitations on the number of gaming tables allowed to operate and on the number of seats at each table game, as well as slot machine spacing, temperature checks, mask protection, limitations on restaurant capacity, entertainment events and conventions as well as other measures to enforce social distancing. In the latter part of the first quarter of 2021, certain jurisdictions have loosened prior operating restrictions, including increased capacity limits applicable to restaurants and conventions as well as allowing limited entertainment events to resume, subject to continued COVID-19 safety measures. Although we are continuing to see reduced operating restrictions at our properties, such properties may be subject to temporary, complete, or partial shutdowns in the future. At this time, the Company cannot predict whether the jurisdictions in which its properties are located, states or federal governments will adopt similar or more restrictive measures in the future than in the past, including stay-at-home orders. While business volumes have improved since operating restrictions loosened in the first quarter of 2021, our properties continued to generate revenues that are significantly lower than historical results. The Company has seen and continues to expect to see weakened demand at its properties relative to pre-pandemic business volumes as a result of continued domestic and international travel restrictions or warnings, restrictions on amenity use, such as gaming, restaurant and pool capacity limitations, consumer fears and reduced consumer discretionary spending, general economic uncertainty, and increased rates of unemployment. In light of the foregoing, the Company is unable to determine when its properties will return to pre-pandemic demand or pricing. In Macau, following a temporary closure of our properties on February 5, 2020, operations resumed on February 20, 2020, subject to certain health safeguards, such as limiting the number of gaming tables allowed to operate and the number of seats available at each table game, slot machine spacing, reduced operating hours at a number of restaurants and bars, temperature checks, and mask protection. Although the issuance of tourist visas (including the individual visit scheme) for residents of Zhuhai, Guangdong Province and all other provinces in mainland China to travel to Macau resumed on August 12, 2020, August 26, 2020 and September 23, 2020, respectively, several travel and entry restrictions in Macau, Hong Kong and mainland China remain in place (including the temporary suspension of ferry services from Hong Kong to Macau, a negative nucleic acid test result, and mandatory quarantine requirements for visitors from Hong Kong and Taiwan, and bans on entry or enhanced quarantine requirements on other visitors into Macau), which have significantly impacted visitation to the Company’s Macau properties.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	NOTE 2 — BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of presentation. As permitted by the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted. These consolidated financial statements should be read in conjunction with the Company’s 2020 annual consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s interim financial statements. The results for such periods are not necessarily indicative of the results to be expected for the full year. Principles of consolidation. The Company evaluates entities for which control is achieved through means other than voting rights to determine if it is the primary beneficiary of a variable interest entity (“VIE”). A VIE is an entity in which either (i) the equity investors as a group, if any, lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance or (ii) the equity investment at risk is insufficient to finance that entity’s activities without additional subordinated financial support. The Company identifies the primary beneficiary of a VIE as the enterprise that has both of the following characteristics: (i) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and (ii) the obligation to absorb losses or receive benefits of the VIE that could potentially be significant to the entity. The Company consolidates its investment in a VIE when it determines that it is its primary beneficiary. For these VIEs, the Company records a noncontrolling interest in the consolidated balance sheets. The Company may change its original assessment of a VIE upon subsequent events such as the modification of contractual arrangements that affect the characteristics or adequacy of the entity’s equity investments at risk and the disposition of all or a portion of an interest held by the primary beneficiary. The Company performs this analysis on an ongoing basis . Management has determined that MGP is a VIE because the Class A equity investors as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is the primary beneficiary of MGP and consolidates MGP because (i) its ownership of MGP’s single Class B share entitles it to a majority of the total voting power of MGP’s shares, and (ii) the exchangeable nature of the Operating Partnership units owned provide the Company the right to receive benefits from MGP that could potentially be significant to MGP. The Company has recorded MGP’s ownership interest in the Operating Partnership as noncontrolling interest in the Company’s consolidated financial statements. As of March 31, 2021, on a consolidated basis MGP had total assets of $10.1 billion, primarily related to its real estate investments, and total liabilities of $5.0 billion, primarily related to its indebtedness. Management has determined that Bellagio BREIT Venture is a VIE because the equity holders as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is not the primary beneficiary of Bellagio BREIT Venture and, accordingly, does not consolidate the venture, because the Company does not have power to direct the activities that could potentially be significant to the venture; BREIT, as the managing member, has such power. The Company has recorded its 5% ownership interest in Bellagio BREIT Venture as an investment in unconsolidated affiliates in the Company’s consolidated financial statements, for which such amount was $60 million as of March 31, 2021. The Company’s maximum exposure to loss as a result of its involvement with Bellagio BREIT Venture is equal to the carrying value of its investment, assuming no future capital funding requirements, plus the exposure to loss resulting from the Company’s guarantee of the debt of Bellagio BREIT Venture, which guarantee is immaterial as of March 31, 2021, as further discussed in Note 7. For entities determined not to be a VIE, the Company consolidates such entities in which the Company owns 100% of the equity. For entities in which the Company owns less than 100% of the equity interest, the Company consolidates the entity under the voting interest model if it has a controlling financial interest based upon the terms of the respective entities’ ownership agreements, such as MGM China. For these entities, the Company records a noncontrolling interest in the consolidated balance sheets and all intercompany balances and transactions are eliminated in consolidation. If the entity does not qualify for consolidation under the voting interest model and the Company has significant influence over the operating and financial decisions of the entity, the Company accounts for the entity under the equity method, such as the Company’s investments in CityCenter, MGP BREIT Venture, and BetMGM, which do not qualify for consolidation as the Company has joint control, given the entities are structured with substantive participating rights whereby both owners participate in the decision making process, which prevents the Company from exerting a controlling financial interest in such entities, as defined in ASC 810. Reclassifications . Certain reclassifications have been made to conform the prior period presentation. Fair value measurements. Fair value measurements affect the Company’s accounting and impairment assessments of its long-lived assets, investments in unconsolidated affiliates, cost method investments, assets acquired, and liabilities assumed in an acquisition, and goodwill and other intangible assets. Fair value measurements also affect the Company’s accounting for certain of its financial assets and liabilities. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and is measured according to a hierarchy that includes: Level 1 inputs, such as quoted prices in an active market; Level 2 inputs, which are observable inputs for similar assets; or Level 3 inputs, which are unobservable inputs. The Company used the following inputs in its fair value measurements: • Level 1 and Level 2 inputs for its long-term debt fair value disclosures. See Note 4; and • Level 2 inputs when measuring the Operating Partnership’s fair value of its interest rate swaps. See Note 4. Revenue recognition. The Company’s revenue from contracts with customers consists of casino wagers transactions, hotel room sales, food and beverage transactions, entertainment shows, and retail transactions. For casino wager transactions that include incentives earned by customers under the Company’s loyalty programs, the Company allocates a portion of net win based upon the standalone selling price of such incentive (less estimated breakage). This allocation is deferred and recognized as revenue when the customer redeems the incentive. When redeemed, revenue is recognized in the department that provides the goods or service. Redemption of loyalty incentives at third party outlets are deducted from the loyalty liability and amounts owed are paid to the third party, with any discount received recorded as other revenue. After allocating revenue to other goods and services provided as part of casino wager transactions, the Company records the residual amount to casino revenue. Contract and Contract-Related Liabilities. There may be a difference between the timing of cash receipts from the customer and the recognition of revenue, resulting in a contract or contract-related liability. The Company generally has three types of liabilities related to contracts with customers: (1) outstanding chip liability, which represents the amounts owed in exchange for gaming chips held by a customer, (2) loyalty program obligations, which represents the deferred allocation of revenue relating to loyalty program incentives earned, as discussed above, and (3) customer advances and other, which is primarily funds deposited by customers before gaming play occurs (“casino front money”) and advance payments on goods and services yet to be provided such as advance ticket sales and deposits on rooms and convention space or for unpaid wagers. These liabilities are generally expected to be recognized as revenue within one year of being purchased, earned, or deposited and are recorded within “Other accrued liabilities” on the Company’s consolidated balance sheets. The following table summarizes the activity related to contract and contract-related liabilities: Outstanding Chip Liability Loyalty Program Customer Advances and Other 2021 2020 2021 2020 2021 2020 (in thousands) Balance at January 1 $ 212,671 $ 314,570 $ 139,756 $ 126,966 $ 382,287 $ 481,095 Balance at March 31 170,040 301,333 133,047 128,650 407,372 371,479 Increase / (decrease) $ (42,631 ) $ (13,237 ) $ (6,709 ) $ 1,684 $ 25,085 $ (109,616 ) Revenue by source. The Company presents the revenue earned disaggregated by the type or nature of the good or service (casino, room, food and beverage, and entertainment, retail and other) and by relevant geographic region within Note 10. Leases. Refer to Note 6 for discussion of leases under which the Company is a lessee. The Company is a lessor under certain other lease arrangements. Lease revenues earned by the Company from third parties are classified within the line item corresponding to the type or nature of the tenant’s good or service . During the three months ended March 31, 2021 and 2020 lease revenues from third-party tenants include $4 million and $10 million recorded within food and beverage revenue, respectively, and $16 million and $19 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. Lease revenues from the rental of hotel rooms are recorded as rooms revenues within the consolidated statements of operations.

Investments in and Advances to

Investments in and Advances to Unconsolidated Affiliates	3 Months Ended
	Mar. 31, 2021
Equity Method Investments And Joint Ventures [Abstract]
Investments in and Advances to Unconsolidated Affiliates	NOTE 3 — INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES Investments in and advances to unconsolidated affiliates consisted of the following: March 31, December 31, 2021 2020 (In thousands) CityCenter Holdings, LLC – CityCenter (50%) $ 432,781 $ 441,893 MGP BREIT Venture (50.1% owned by the Operating Partnership) 820,390 810,066 BetMGM (50%) 43,054 27,310 Other 143,229 167,774 $ 1,439,454 $ 1,447,043 The Company recorded its share of income (loss) from unconsolidated affiliates, including adjustments for basis differences, as follows: Three Months Ended March 31, 2021 2020 (In thousands) Income (loss) from unconsolidated affiliates $ (25,579 ) $ 35,748 Non-operating items from unconsolidated affiliates (20,836 ) (32,621 ) $ (46,415 ) $ 3,127 The following table summarizes information related to the Company’s share of operating income (loss) from unconsolidated affiliates: Three Months Ended March 31, 2021 2020 (In thousands) CityCenter $ (2,831 ) $ 20,666 MGP BREIT Venture 38,962 19,950 BetMGM (59,236 ) (10,677 ) Other (2,474 ) 5,809 $ (25,579 ) $ 35,748 MGP BREIT Venture distributions. For the three months ended March 31, 2021 and 2020, the Operating Partnership received $15 million and $12 million in distributions from MGP BREIT Venture, respectively. BetMGM contributions. For the three months ended March 31, 2021 and 2020, the Company contributed $75 million and $20 million to BetMGM, respectively.

Long-Term Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 4 — LONG-TERM DEBT Long-term debt consisted of the following: March 31, December 31, 2021 2020 (In thousands) Operating Partnership senior credit facility $ 500 $ 10,000 MGM China first revolving credit facility 902,923 770,034 7.75% senior notes, due 2022 1,000,000 1,000,000 6% senior notes, due 2023 1,250,000 1,250,000 5.625% Operating Partnership senior notes, due 2024 1,050,000 1,050,000 5.375% MGM China senior notes, due 2024 750,000 750,000 6.75% senior notes, due 2025 750,000 750,000 5.75% senior notes, due 2025 675,000 675,000 4.625% Operating Partnership senior notes, due 2025 800,000 800,000 5.25% MGM China senior notes, due 2025 500,000 500,000 5.875% MGM China senior notes, due 2026 750,000 750,000 4.5% Operating Partnership senior notes, due 2026 500,000 500,000 4.625% senior notes, due 2026 400,000 400,000 5.75% Operating Partnership senior notes, due 2027 750,000 750,000 5.5% senior notes, due 2027 675,000 675,000 4.75% MGM China senior notes, due 2027 750,000 — 4.5% Operating Partnership senior notes, due 2028 350,000 350,000 4.75% senior notes, due 2028 750,000 750,000 3.875% Operating Partnership senior notes, due 2029 750,000 750,000 7% debentures, due 2036 552 552 13,353,975 12,480,586 Less: Premiums, discounts, and unamortized debt issuance costs, net (108,527 ) (103,902 ) $ 13,245,448 $ 12,376,684 Debt due within one year of the March 31, 2021 balance sheet was classified as long-term as the Company had both the intent and ability to refinance current maturities on a long-term basis under its revolving credit facilities. Senior credit facility. At March 31, 2021 , the Company’s senior credit facility consisted of a $1.5 billion revolving facility . At March 31, 2021, no amounts were drawn on the revolving credit facility. In February 2021, the Company amended its credit facility to extend the covenant relief period provided under the previous amendment related to its financial maintenance covenants through the earlier of (x) the day immediately following the date the Company delivers to the administrative agent a compliance certificate with respect to the quarter ending June 30, 2022 and (y) the date the Company delivers to the administrative agent an irrevocable notice terminating the covenant relief period, and to adjust the required leverage and interest coverage levels for the covenant when it is reimposed at the end of the waiver period. In addition, in connection with the February 2021 amendment, the Company agreed to an increase of the liquidity test such that the Company’s borrower group (as defined in the credit agreement) is required to maintain a minimum liquidity level of not less than $1.0 billion (including unrestricted cash, cash equivalents and availability under the revolving credit facility), tested at the end of each month during the covenant relief period. The Company’s senior credit facility contains customary representations and warranties, events of default and positive and negative covenants. The Company was in compliance with its applicable covenants at March 31, 2021. Operating Partnership senior credit facility and bridge facility. At March 31, 2021, the Operating Partnership senior credit facility consisted of a $1.35 billion revolving credit facility. At March 31, 2021, $1 million was drawn on the revolving credit facility and the interest rate on the revolving credit facility was 4.00%. The Operating Partnership was in compliance with its revolving credit facility covenants at March 31, 2021. The Operating Partnership is party to interest rate swaps to mitigate the effects of interest rate volatility inherent in its variable rate debt as well as forecasted debt issuances. As of March 31, 2021, the Operating Partnership has currently effective interest rate swap agreements on which it pays a weighted average fixed rate of 1.821% on total notional amount of $1.9 billion. The Operating Partnership has an additional $900 million total notional amount of forward starting interest rate swaps that are not currently effective. The fair value of interest rate swaps designated as cash flow hedges was $29 million, with $5 million recorded as a current liability and $24 million recorded as a long-term liability, 43 MGM China first revolving credit facility. At March 31, 2021, the MGM China first revolving credit facility consisted of a $1.25 billion unsecured revolving credit facility. At March 31, 2021, $903 million was drawn on the MGM China first revolving credit facility and the weighted average interest rate was 2.88%. The MGM China first revolving credit facility contains customary representations and warranties, events of default, and positive, negative and financial covenants, including that MGM China maintains compliance with a maximum leverage ratio and a minimum interest coverage ratio. In February 2021, MGM China amended its credit agreement to provide for a waiver of its maximum leverage ratio and its minimum interest coverage ratio through the fourth quarter of 2022. MGM China second revolving credit facility. At March 31, 2021, the MGM China second revolving credit facility consisted of a $400 million unsecured revolving credit facility with an option to increase the amount of the facility up to $500 million, subject to certain conditions. Draws will be subject to satisfaction of certain conditions precedent, including evidence that the MGM China first revolving credit facility has been fully drawn. At March 31, 2021, no amounts were drawn on the MGM China second revolving credit facility The MGM China second revolving credit facility contains customary representations and warranties, events of default, and positive, negative and financial covenants, including that MGM China maintains compliance with a maximum leverage ratio and a minimum interest coverage ratio beginning in the third quarter of 2021. In February 2021, MGM China amended its credit agreement to provide for a waiver of its maximum leverage ratio and its minimum interest coverage ratio through the fourth quarter of 2022. MGM China senior notes. In March 2021, MGM China issued $750 million in aggregate principal amount of 4.75% senior notes due 2027 at an issue price of 99.97%. Fair value of long-term debt. The estimated fair value of the Company’s long-term debt was $14.0 billion and $13.2 billion at March 31, 2021 and December 31, 2020, respectively. Fair value was estimated using quoted market prices for the Company’s senior notes and credit facilities.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 5 — INCOME TAXES For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was a benefit of 22.0% on loss before income taxes and a provision of 28.0% on income before income taxes for the three months ended March 31, 2021 and 2020, respectively. The Company recognizes deferred income tax assets, net of applicable reserves, related to net operating losses, tax credit carryforwards and certain temporary differences. The Company recognizes future tax benefits to the extent that realization of such benefit is more likely than not. Otherwise, a valuation allowance is applied. The Company decreased its valuation allowance for its foreign tax credits (“FTCs”) by $3 million in the three months ended March 31, 2021 with a corresponding increase to benefit for income taxes. The Company's FTCs are attributable to the Macau Special Gaming Tax, which is 35% of gross gaming revenue in Macau. Significant judgment is required in assessing the need for a valuation allowance and future changes to assumptions used in this assessment could result in material changes in the valuation allowance with a corresponding impact on the provision for income taxes in the period including such change. MGM Grand Paradise’s application for an extension of its annual fee arrangement with Macau covering distributions of gaming profits to be earned through June 26, 2022 is still pending. Until the extension is granted, the 12% complementary tax will accrue on distributions of gaming profits earned after March 31, 2020; however, no amounts are accrued for the three months ended March 31, 2021 since MGM Grand Paradise continues to generate losses due to the impact of COVID-19. During the three months ended March 31, 2021 one of the Company's subsidiaries, Marina District Development Company, LLC, closed an examination in the state of New Jersey for tax years 2015 through 2018 with no change in tax due. As a result of the audit closure, the Company reversed $10 million of unrecognized tax benefits during the quarter. The Company believes it is reasonably possible that it will reverse an additional $20 million of unrecognized tax benefits within the next twelve months on the expectation during such period of a settlement with IRS Appeals for issues outstanding on the Company's 2014 U.S. consolidated federal income tax return.

Leases

Leases	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	NOTE 6 — LEASES The Company leases the land underlying certain of its properties, real estate, and various equipment under operating and, to a lesser extent, finance lease arrangements. The master lease agreement with MGP is eliminated in consolidation and, accordingly is not included within the disclosures below; refer to Note 11 for further discussion of the master lease with MGP. Bellagio real estate assets. The Bellagio lease has an initial term of 30 years that began on November 15, 2019, with two subsequent ten-year The Company was in compliance with its applicable lease covenants as of March 31, 2021. Mandalay Bay and MGM Grand Las Vegas real estate assets. The Mandalay Bay and MGM Grand Las Vegas lease has an initial term of 30 years that began on February 14, 2020, with two subsequent ten-year The Company was in compliance with its applicable lease covenants as of March 31, 2021. Other information. Components of lease costs and other information related to the Company’s leases was as follows: Three Months Ended March 31, 2021 2020 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 198,991 $ 152,536 Finance lease costs Interest expense (2) $ (656 ) $ (952 ) Amortization expense 17,814 17,406 Total finance lease costs $ 17,158 $ 16,454 (1) For the three months ended March 31, 2021 and 2020, operating lease cost includes $83 million related to the Bellagio lease for each of the respective periods, and $99 million and $51 million related to the Mandalay Bay and MGM Grand Las Vegas lease, respectively. (2) For the three months ended March 31, 2021 and 2020, interest expense includes the effect of COVID-19 related rent concessions received on certain finance leases, for which such effect was recognized as negative variable rent expense. March 31, December 31, 2021 2020 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (1) $ 8,240,897 $ 8,286,694 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 29,837 $ 31,843 Operating lease liabilities - long-term (2) 8,392,216 8,390,117 Total operating lease liabilities $ 8,422,053 $ 8,421,960 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 183,155 $ 200,980 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 76,496 $ 80,193 Finance lease liabilities - long-term, classified within "Other long-term obligations" 116,591 134,287 Total finance lease liabilities $ 193,087 $ 214,480 Weighted-average remaining lease term (years) Operating leases 30 30 Finance leases 3 3 Weighted-average discount rate (%) Operating leases 8 8 Finance leases 3 3 (1) As of March 31, 2021 and December 31, 2020, operating lease right-of-use assets, net included $3.7 billion related to the Bellagio lease for each of the respective periods, and $4.0 billion related to the Mandalay Bay and MGM Grand lease for each of the respective periods. (2) As of March 31, 2021 and December 31, 2020, operating lease liabilities – long-term included $3.8 billion related to the Bellagio lease for each of the respective periods, and $4.1 billion related to the Mandalay Bay and MGM Grand lease for each of the respective periods. March 31, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 154,504 $ 122,906 Operating cash outflows from finance leases 1,456 1,722 Financing cash outflows from finance leases (1) 19,269 11,040 ROU assets obtained in exchange for new lease liabilities Operating leases $ — $ 4,121,442 Finance leases — 167,089 (1) Included within “Other” within the “Cash flows from financing activities” on the accompanying consolidated statements of cash flows. Maturities of lease liabilities were as follows: Operating Leases Finance Leases Year ending December 31, 2021 (In thousands) 2021 (excluding the three months ended March 31, 2021) $ 458,381 $ 62,116 2022 616,243 72,521 2023 625,359 63,714 2024 635,750 1,030 2025 644,801 515 Thereafter 19,801,045 — Total future minimum lease payments 22,781,579 199,896 Less: Amount of lease payments representing interest (14,359,526 ) (6,809 ) Present value of future minimum lease payments 8,422,053 193,087 Less: Current portion (29,837 ) (76,496 ) Long-term portion of lease liabilities $ 8,392,216 $ 116,591

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 7 — COMMITMENTS AND CONTINGENCIES 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 $850 million. At March 31, 2021, $30 million in letters of credit were outstanding under the Company’s senior credit facility. The Operating Partnership’s senior credit facility limits the amount of letters of credit that can be issued to $75 million. No letters of credit were outstanding under the Operating Partnership’s senior credit facility at March 31, 2021. The amount of available borrowings under each of the credit facilities is reduced by any outstanding letters of credit. MGM China bank guarantee. In connection with the extension of the expiration of the gaming subconcession to June 2022, MGM Grand Paradise provided a bank guarantee in an amount of approximately $102 million (when giving effect to foreign currency exchange rate fluctuations) to the government of Macau in May 2019 to warrant the fulfillment of an existing commitment of labor liabilities upon the expiration of the gaming subconcession in June 2022. Bellagio BREIT Venture 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 Bellagio BREIT Venture, which 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 Bellagio owned by Bellagio BREIT Venture, and the debt obligation. This guarantee is accounted for under ASC 460 at fair value; such value is immaterial. MGP BREIT Venture shortfall guarantee. The Company provides a shortfall guarantee of the $3.0 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of MGP BREIT Venture, which has an initial term of twelve years, maturing in 2032, with an anticipated repayment date of March 2030. 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 Mandalay Bay and MGM Grand Las Vegas, owned by MGP BREIT Venture, and the debt obligation. This guarantee is accounted for under ASC 460 at fair value; such value is immaterial. MGP BREIT Venture bad acts guarantee. The Operating Partnership provides a guarantee for the losses incurred by the lenders of the indebtedness of the MGP BREIT Venture arising out of certain bad acts by the Operating Partnership, its venture partner, or the venture, such as fraud or willful misconduct, based on the party’s percentage ownership of the MGP BREIT Venture. This guarantee is capped at 10% of the principal amount outstanding at the time of the loss. The Operating Partnership and its venture partner have separately indemnified each other for the other party’s share of the overall liability exposure, if at fault. The guarantee is accounted for under ASC 460 at fair value; such value is immaterial.

Income Per Share of Common Stoc

Income Per Share of Common Stock	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Income Per Share of Common Stock	NOTE 8 — INCOME PER SHARE OF COMMON STOCK The table below reconciles basic and diluted income per share of common stock. Diluted weighted-average common and common equivalent shares include adjustments for potential dilution of share-based awards outstanding under the Company’s stock compensation plan. Three Months Ended March 31, 2021 2020 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ (331,829 ) $ 806,869 Adjustment related to redeemable noncontrolling interests (9,428 ) 8,070 Net income (loss) available to common stockholders – basic and diluted $ (341,257 ) $ 814,939 Denominator: Weighted-average common shares outstanding – basic 494,864 495,415 Potential dilution from share-based awards — 1,569 Weighted-average common and common equivalent shares – diluted 494,864 496,984 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 8,484 3,876

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity	NOTE 9 — STOCKHOLDERS’ EQUITY Noncontrolling interest ownership transactions MGP Class A share issuance – March 2021. On March 15, 2021, MGP completed an offering of 22 million of its Class A shares, the proceeds of which were used to partially satisfy MGP’s obligations pursuant to that certain notice of redemption delivered by certain MGM subsidiaries, discussed below. Subsequent to MGP’s Class A share issuance and the redemption of Operating Partnership units, discussed below, the Company indirectly owned 42.1% of the partnership units in the Operating Partnership. Redemption of Operating Partnership units – March 2021. In March 2021, subsidiaries of the Company delivered a notice of redemption to MGP covering approximately 37 million Operating Partnership units that they held in accordance with the terms of the Operating Partnership’s partnership agreement. In accordance with the terms of such agreement, upon receipt of the notice of redemption, MGP formed a conflicts committee to determine the mix of consideration that it would provide for the Operating Partnership units. The conflicts committee determined that MGP would redeem approximately 15 million Operating Partnership units for cash (with such Operating Partnership units retired upon redemption) and would satisfy its remaining obligation under that notice covering the remaining 22 million Operating Partnership units using the proceeds, net of the underwriters’ discount, of MGP’s Class A offering, for aggregate cash proceeds received by the Company of approximately $1.2 billion. The Company adjusted the carrying value of the noncontrolling interests for the change in noncontrolling interests’ ownership percentage of the Operating Partnership’s net assets, with offsetting adjustments to capital in excess of par value and accumulated other comprehensive loss. Subsequent to the collective transactions, the Company indirectly owned 42.1% of the partnership units in the Operating Partnership. Other equity activity MGM Resorts International dividends. On April 28, 2021 the Company’s Board of Directors approved a quarterly dividend of $0.0025 per share that will be payable on June 15, 2021 to holders of record on June 10, 2021 MGM Resorts International stock repurchase program. In February 2020, upon substantial completion of the May 2018 $2.0 billion stock repurchase program, the Company’s Board of Directors authorized a $3.0 billion stock repurchase program. Under each stock repurchase program, the Company may repurchase shares from time to time in the open market or in privately negotiated agreements. Repurchases of common stock may also be made under a Rule 10b5-1 plan, which would permit common stock to be repurchased when the Company might otherwise be precluded from doing so under insider trading laws. The timing, volume and nature of stock repurchases will be at the sole discretion of management, dependent on market conditions, applicable securities laws, and other factors, and may be suspended or discontinued at any time During the three months ended March 31, 2021, the Company repurchased approximately 3 million shares of its common stock at an average price of $37.87 per share for an aggregate amount of $119 million. Repurchased shares were retired. As a result of those repurchases, the Company completed its May 2018 $2.0 billion stock repurchase program and the remaining availability under the February 2020 $3.0 billion stock repurchase program was $2.9 billion as of March 31, 2021. Subsequent to the quarter ended March 31, 2021, the Company repurchased 1 million shares of its common stock at an average price of $39.10 per share for an aggregate amount of $56 million. Repurchased shares will be retired. During the three months ended March 31, 2020, the Company repurchased approximately 11 million shares of its common stock at an average price of $32.57 per share for an aggregate amount of $354 million. Repurchased shares were retired. Accumulated other comprehensive loss. Changes in accumulated other comprehensive loss attributable to MGM Resorts International are as follows: Currency Translation Cash Flow Adjustments Hedges Other Total (In thousands) Balances, January 1, 2021 $ 12,964 $ (55,357 ) $ 11,716 $ (30,677 ) Other comprehensive income (loss) before reclassifications (13,022 ) 10,680 — (2,342 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 4,618 — 4,618 Other comprehensive income (loss), net of tax (13,022 ) 15,298 — 2,276 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuance — — 2,868 2,868 Redemption of Operating Partnership units — — 5,327 5,327 Other — — (2,482 ) (2,482 ) Changes in accumulated other comprehensive income (loss): (13,022 ) 15,298 5,713 7,989 Other comprehensive loss (income) attributable to noncontrolling interest 5,669 (8,199 ) — (2,530 ) Balances, March 31, 2021 $ 5,611 $ (48,258 ) $ 17,429 $ (25,218 )

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Segment Information	NOTE 10 — SEGMENT INFORMATION The Company’s management views each of its casino resorts as an operating segment. Operating segments are aggregated based on their similar economic characteristics, types of customers, types of services and products provided, the regulatory environments in which they operate and their management and reporting structure. The Company has aggregated its operating segments into the following reportable segments: Las Vegas Strip Resorts, Regional Operations and MGM China. Las Vegas Strip Resorts . Las Vegas Strip Resorts consists of the following casino resorts: Bellagio, MGM Grand Las Vegas (including The Signature), Mandalay Bay (including Delano and Four Seasons), The Mirage, Luxor, New York-New York (including The Park), Excalibur and Park MGM (including NoMad Las Vegas). Regional Operations. Regional Operations consists of the following casino resorts: MGM Grand Detroit in Detroit, Michigan; Beau Rivage in Biloxi, Mississippi; Gold Strike Tunica in Tunica, Mississippi; Borgata in Atlantic City, New Jersey; MGM National Harbor in Prince George’s County, Maryland; MGM Springfield in Springfield, Massachusetts; Empire City in Yonkers, New York; and MGM Northfield Park in Northfield Park, Ohio. MGM China. MGM China consists of MGM Macau and MGM Cotai. The Company’s operations related to investments in unconsolidated affiliates and certain other corporate operations and management services have not been identified as separate reportable segments; therefore, these operations are included in “Corporate and other” in the following segment disclosures to reconcile to consolidated results. Adjusted Property EBITDAR is the Company’s reportable segment GAAP measure, which management utilizes as the primary profit measure for its reportable segments and underlying operating segments. Adjusted Property EBITDAR is a measure defined as earnings before interest and other non-operating income (expense), taxes, depreciation and amortization, preopening and start-up expenses, gain on REIT transactions, net, rent expense associated with triple-net operating and ground leases, income from unconsolidated affiliates related to investments in real estate ventures, and property transactions, net, and also excludes corporate expense and stock compensation expense, which are not allocated to each operating segment, and rent expense related to the master lease with MGP that eliminates in consolidation. The following tables present the Company’s segment information: Three Months Ended March 31, 2021 2020 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 232,094 $ 274,673 Rooms 144,329 362,864 Food and beverage 90,419 288,763 Entertainment, retail and other 78,122 207,506 544,964 1,133,806 Regional Operations Casino 596,655 536,630 Rooms 40,579 55,879 Food and beverage 50,364 95,092 Entertainment, retail and other 23,753 38,059 711,351 725,660 MGM China Casino 261,604 240,414 Rooms 13,512 15,209 Food and beverage 16,629 12,780 Entertainment, retail and other 4,609 3,484 296,354 271,887 Reportable segment net revenues 1,552,669 2,131,353 Corporate and other 95,078 121,464 $ 1,647,747 $ 2,252,817 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 108,119 $ 267,599 Regional Operations 241,982 151,720 MGM China 4,775 (21,990 ) Reportable segment Adjusted Property EBITDAR 354,876 397,329 Other operating income (expense) Corporate and other, net (136,991 ) (102,237 ) Preopening and start-up expenses (5 ) (122 ) Property transactions, net (26,071 ) (54,975 ) Gain on REIT transactions, net — 1,491,945 Depreciation and amortization (290,551 ) (318,290 ) CEO transition expense — (44,401 ) Triple-net operating lease and ground lease rent expense (189,620 ) (141,918 ) Income from unconsolidated affiliates related to real estate ventures 41,672 23,514 Operating income (loss) (246,690 ) 1,250,845 Non-operating income (expense) Interest expense, net of amounts capitalized (195,295 ) (157,137 ) Non-operating items from unconsolidated affiliates (20,836 ) (32,621 ) Other, net 32,185 (124,264 ) (183,946 ) (314,022 ) Income (loss) before income taxes (430,636 ) 936,823 Benefit (provision) for income taxes 94,698 (262,304 ) Net income (loss) (335,938 ) 674,519 Less: Net loss attributable to noncontrolling interests 4,109 132,350 Net income (loss) attributable to MGM Resorts International $ (331,829 ) $ 806,869

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	NOTE 11 — RELATED PARTY TRANSACTIONS MGP As further described in Note 1, pursuant to the master lease with MGP, the Company leases the real estate assets of The Mirage, Luxor, New York-New York, Park MGM, Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, Empire City, MGM National Harbor and MGM Northfield Park from MGP . The annual rent payments under the MGP master lease for the sixth lease year, which commenced on April 1, 2021, increased to $843 million from $828 million, as a result of the fifth 2.0% fixed annual rent escalator that went into effect on April 1, 2021. In March 2021, the Company delivered a notice of redemption covering approximately 37 million Operating Partnership units that it held which was satisfied with aggregate cash proceeds of approximately $1.2 billion. Refer to Note 9 for further discussion of such redemption. All intercompany transactions, including transactions under the MGP master lease, have been eliminated in the Company’s consolidation of MGP. The public ownership of MGP’s Class A shares is recognized as noncontrolling interests in the Company’s consolidated financial statements. Bellagio BREIT Venture The Company has a 5% ownership interest in the Bellagio BREIT Venture, which owns the real estate assets of Bellagio and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 6 for further information related to the Bellagio lease. MGP BREIT Venture MGP has a 50.1% ownership interest in the MGP BREIT Venture, which owns the real estate assets of Mandalay Bay and MGM Grand Las Vegas and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 6 for further information related to the Mandalay Bay and MGM Grand Las Vegas lease.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation. As permitted by the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted. These consolidated financial statements should be read in conjunction with the Company’s 2020 annual consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s interim financial statements. The results for such periods are not necessarily indicative of the results to be expected for the full year.
Principles of consolidation	Principles of consolidation. The Company evaluates entities for which control is achieved through means other than voting rights to determine if it is the primary beneficiary of a variable interest entity (“VIE”). A VIE is an entity in which either (i) the equity investors as a group, if any, lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance or (ii) the equity investment at risk is insufficient to finance that entity’s activities without additional subordinated financial support. The Company identifies the primary beneficiary of a VIE as the enterprise that has both of the following characteristics: (i) the power to direct the activities of the VIE that most significantly impact the entity’s economic performance; and (ii) the obligation to absorb losses or receive benefits of the VIE that could potentially be significant to the entity. The Company consolidates its investment in a VIE when it determines that it is its primary beneficiary. For these VIEs, the Company records a noncontrolling interest in the consolidated balance sheets. The Company may change its original assessment of a VIE upon subsequent events such as the modification of contractual arrangements that affect the characteristics or adequacy of the entity’s equity investments at risk and the disposition of all or a portion of an interest held by the primary beneficiary. The Company performs this analysis on an ongoing basis . Management has determined that MGP is a VIE because the Class A equity investors as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is the primary beneficiary of MGP and consolidates MGP because (i) its ownership of MGP’s single Class B share entitles it to a majority of the total voting power of MGP’s shares, and (ii) the exchangeable nature of the Operating Partnership units owned provide the Company the right to receive benefits from MGP that could potentially be significant to MGP. The Company has recorded MGP’s ownership interest in the Operating Partnership as noncontrolling interest in the Company’s consolidated financial statements. As of March 31, 2021, on a consolidated basis MGP had total assets of $10.1 billion, primarily related to its real estate investments, and total liabilities of $5.0 billion, primarily related to its indebtedness. Management has determined that Bellagio BREIT Venture is a VIE because the equity holders as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is not the primary beneficiary of Bellagio BREIT Venture and, accordingly, does not consolidate the venture, because the Company does not have power to direct the activities that could potentially be significant to the venture; BREIT, as the managing member, has such power. The Company has recorded its 5% ownership interest in Bellagio BREIT Venture as an investment in unconsolidated affiliates in the Company’s consolidated financial statements, for which such amount was $60 million as of March 31, 2021. The Company’s maximum exposure to loss as a result of its involvement with Bellagio BREIT Venture is equal to the carrying value of its investment, assuming no future capital funding requirements, plus the exposure to loss resulting from the Company’s guarantee of the debt of Bellagio BREIT Venture, which guarantee is immaterial as of March 31, 2021, as further discussed in Note 7. For entities determined not to be a VIE, the Company consolidates such entities in which the Company owns 100% of the equity. For entities in which the Company owns less than 100% of the equity interest, the Company consolidates the entity under the voting interest model if it has a controlling financial interest based upon the terms of the respective entities’ ownership agreements, such as MGM China. For these entities, the Company records a noncontrolling interest in the consolidated balance sheets and all intercompany balances and transactions are eliminated in consolidation. If the entity does not qualify for consolidation under the voting interest model and the Company has significant influence over the operating and financial decisions of the entity, the Company accounts for the entity under the equity method, such as the Company’s investments in CityCenter, MGP BREIT Venture, and BetMGM, which do not qualify for consolidation as the Company has joint control, given the entities are structured with substantive participating rights whereby both owners participate in the decision making process, which prevents the Company from exerting a controlling financial interest in such entities, as defined in ASC 810.
Reclassifications	Reclassifications . Certain reclassifications have been made to conform the prior period presentation.
Fair value measurements	Fair value measurements. Fair value measurements affect the Company’s accounting and impairment assessments of its long-lived assets, investments in unconsolidated affiliates, cost method investments, assets acquired, and liabilities assumed in an acquisition, and goodwill and other intangible assets. Fair value measurements also affect the Company’s accounting for certain of its financial assets and liabilities. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date and is measured according to a hierarchy that includes: Level 1 inputs, such as quoted prices in an active market; Level 2 inputs, which are observable inputs for similar assets; or Level 3 inputs, which are unobservable inputs. The Company used the following inputs in its fair value measurements: • Level 1 and Level 2 inputs for its long-term debt fair value disclosures. See Note 4; and • Level 2 inputs when measuring the Operating Partnership’s fair value of its interest rate swaps. See Note 4.
Revenue recognition	Revenue recognition. The Company’s revenue from contracts with customers consists of casino wagers transactions, hotel room sales, food and beverage transactions, entertainment shows, and retail transactions. For casino wager transactions that include incentives earned by customers under the Company’s loyalty programs, the Company allocates a portion of net win based upon the standalone selling price of such incentive (less estimated breakage). This allocation is deferred and recognized as revenue when the customer redeems the incentive. When redeemed, revenue is recognized in the department that provides the goods or service. Redemption of loyalty incentives at third party outlets are deducted from the loyalty liability and amounts owed are paid to the third party, with any discount received recorded as other revenue. After allocating revenue to other goods and services provided as part of casino wager transactions, the Company records the residual amount to casino revenue. Contract and Contract-Related Liabilities. There may be a difference between the timing of cash receipts from the customer and the recognition of revenue, resulting in a contract or contract-related liability. The Company generally has three types of liabilities related to contracts with customers: (1) outstanding chip liability, which represents the amounts owed in exchange for gaming chips held by a customer, (2) loyalty program obligations, which represents the deferred allocation of revenue relating to loyalty program incentives earned, as discussed above, and (3) customer advances and other, which is primarily funds deposited by customers before gaming play occurs (“casino front money”) and advance payments on goods and services yet to be provided such as advance ticket sales and deposits on rooms and convention space or for unpaid wagers. These liabilities are generally expected to be recognized as revenue within one year of being purchased, earned, or deposited and are recorded within “Other accrued liabilities” on the Company’s consolidated balance sheets. The following table summarizes the activity related to contract and contract-related liabilities: Outstanding Chip Liability Loyalty Program Customer Advances and Other 2021 2020 2021 2020 2021 2020 (in thousands) Balance at January 1 $ 212,671 $ 314,570 $ 139,756 $ 126,966 $ 382,287 $ 481,095 Balance at March 31 170,040 301,333 133,047 128,650 407,372 371,479 Increase / (decrease) $ (42,631 ) $ (13,237 ) $ (6,709 ) $ 1,684 $ 25,085 $ (109,616 ) Revenue by source. The Company presents the revenue earned disaggregated by the type or nature of the good or service (casino, room, food and beverage, and entertainment, retail and other) and by relevant geographic region within Note 10. Leases. Refer to Note 6 for discussion of leases under which the Company is a lessee. The Company is a lessor under certain other lease arrangements. Lease revenues earned by the Company from third parties are classified within the line item corresponding to the type or nature of the tenant’s good or service . During the three months ended March 31, 2021 and 2020 lease revenues from third-party tenants include $4 million and $10 million recorded within food and beverage revenue, respectively, and $16 million and $19 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. Lease revenues from the rental of hotel rooms are recorded as rooms revenues within the consolidated statements of operations.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of Contract and Contract - Related Liabilities	The following table summarizes the activity related to contract and contract-related liabilities: Outstanding Chip Liability Loyalty Program Customer Advances and Other 2021 2020 2021 2020 2021 2020 (in thousands) Balance at January 1 $ 212,671 $ 314,570 $ 139,756 $ 126,966 $ 382,287 $ 481,095 Balance at March 31 170,040 301,333 133,047 128,650 407,372 371,479 Increase / (decrease) $ (42,631 ) $ (13,237 ) $ (6,709 ) $ 1,684 $ 25,085 $ (109,616 )

Investments in and Advances t_2

Investments in and Advances to Unconsolidated Affiliates (Tables)	3 Months Ended
	Mar. 31, 2021
Equity Method Investments And Joint Ventures [Abstract]
Schedule of Investments in and Advances to Unconsolidated Affiliates	Investments in and advances to unconsolidated affiliates consisted of the following: March 31, December 31, 2021 2020 (In thousands) CityCenter Holdings, LLC – CityCenter (50%) $ 432,781 $ 441,893 MGP BREIT Venture (50.1% owned by the Operating Partnership) 820,390 810,066 BetMGM (50%) 43,054 27,310 Other 143,229 167,774 $ 1,439,454 $ 1,447,043
Schedule of Share of Net Income (Loss) From Unconsolidated Affiliates	The Company recorded its share of income (loss) from unconsolidated affiliates, including adjustments for basis differences, as follows: Three Months Ended March 31, 2021 2020 (In thousands) Income (loss) from unconsolidated affiliates $ (25,579 ) $ 35,748 Non-operating items from unconsolidated affiliates (20,836 ) (32,621 ) $ (46,415 ) $ 3,127
Schedule of Share of Income (Loss) From Unconsolidated Affiliates	The following table summarizes information related to the Company’s share of operating income (loss) from unconsolidated affiliates: Three Months Ended March 31, 2021 2020 (In thousands) CityCenter $ (2,831 ) $ 20,666 MGP BREIT Venture 38,962 19,950 BetMGM (59,236 ) (10,677 ) Other (2,474 ) 5,809 $ (25,579 ) $ 35,748

Long-Term Debt (Tables)

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: March 31, December 31, 2021 2020 (In thousands) Operating Partnership senior credit facility $ 500 $ 10,000 MGM China first revolving credit facility 902,923 770,034 7.75% senior notes, due 2022 1,000,000 1,000,000 6% senior notes, due 2023 1,250,000 1,250,000 5.625% Operating Partnership senior notes, due 2024 1,050,000 1,050,000 5.375% MGM China senior notes, due 2024 750,000 750,000 6.75% senior notes, due 2025 750,000 750,000 5.75% senior notes, due 2025 675,000 675,000 4.625% Operating Partnership senior notes, due 2025 800,000 800,000 5.25% MGM China senior notes, due 2025 500,000 500,000 5.875% MGM China senior notes, due 2026 750,000 750,000 4.5% Operating Partnership senior notes, due 2026 500,000 500,000 4.625% senior notes, due 2026 400,000 400,000 5.75% Operating Partnership senior notes, due 2027 750,000 750,000 5.5% senior notes, due 2027 675,000 675,000 4.75% MGM China senior notes, due 2027 750,000 — 4.5% Operating Partnership senior notes, due 2028 350,000 350,000 4.75% senior notes, due 2028 750,000 750,000 3.875% Operating Partnership senior notes, due 2029 750,000 750,000 7% debentures, due 2036 552 552 13,353,975 12,480,586 Less: Premiums, discounts, and unamortized debt issuance costs, net (108,527 ) (103,902 ) $ 13,245,448 $ 12,376,684

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Schedule of Components of Lease Costs	Other information. Components of lease costs and other information related to the Company’s leases was as follows: Three Months Ended March 31, 2021 2020 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 198,991 $ 152,536 Finance lease costs Interest expense (2) $ (656 ) $ (952 ) Amortization expense 17,814 17,406 Total finance lease costs $ 17,158 $ 16,454 (1) For the three months ended March 31, 2021 and 2020, operating lease cost includes $83 million related to the Bellagio lease for each of the respective periods, and $99 million and $51 million related to the Mandalay Bay and MGM Grand Las Vegas lease, respectively. (2) For the three months ended March 31, 2021 and 2020, interest expense includes the effect of COVID-19 related rent concessions received on certain finance leases, for which such effect was recognized as negative variable rent expense.
Schedule of Supplemental Balance Sheet Information Related to Leases	March 31, December 31, 2021 2020 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (1) $ 8,240,897 $ 8,286,694 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 29,837 $ 31,843 Operating lease liabilities - long-term (2) 8,392,216 8,390,117 Total operating lease liabilities $ 8,422,053 $ 8,421,960 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 183,155 $ 200,980 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 76,496 $ 80,193 Finance lease liabilities - long-term, classified within "Other long-term obligations" 116,591 134,287 Total finance lease liabilities $ 193,087 $ 214,480 Weighted-average remaining lease term (years) Operating leases 30 30 Finance leases 3 3 Weighted-average discount rate (%) Operating leases 8 8 Finance leases 3 3 (1) As of March 31, 2021 and December 31, 2020, operating lease right-of-use assets, net included $3.7 billion related to the Bellagio lease for each of the respective periods, and $4.0 billion related to the Mandalay Bay and MGM Grand lease for each of the respective periods. (2) As of March 31, 2021 and December 31, 2020, operating lease liabilities – long-term included $3.8 billion related to the Bellagio lease for each of the respective periods, and $4.1 billion related to the Mandalay Bay and MGM Grand lease for each of the respective periods.
Schedule of Cash Paid for Amounts Included in Measurement of Lease Liabilities and ROU Assets Obtained in Exchange for New Lease Liabilities	March 31, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 154,504 $ 122,906 Operating cash outflows from finance leases 1,456 1,722 Financing cash outflows from finance leases (1) 19,269 11,040 ROU assets obtained in exchange for new lease liabilities Operating leases $ — $ 4,121,442 Finance leases — 167,089 (1) Included within “Other” within the “Cash flows from financing activities” on the accompanying consolidated statements of cash flows.
Schedule of Maturities of Lease Liabilities	Maturities of lease liabilities were as follows: Operating Leases Finance Leases Year ending December 31, 2021 (In thousands) 2021 (excluding the three months ended March 31, 2021) $ 458,381 $ 62,116 2022 616,243 72,521 2023 625,359 63,714 2024 635,750 1,030 2025 644,801 515 Thereafter 19,801,045 — Total future minimum lease payments 22,781,579 199,896 Less: Amount of lease payments representing interest (14,359,526 ) (6,809 ) Present value of future minimum lease payments 8,422,053 193,087 Less: Current portion (29,837 ) (76,496 ) Long-term portion of lease liabilities $ 8,392,216 $ 116,591

Income Per Share of Common St_2

Income Per Share of Common Stock (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding	The table below reconciles basic and diluted income per share of common stock. Diluted weighted-average common and common equivalent shares include adjustments for potential dilution of share-based awards outstanding under the Company’s stock compensation plan. Three Months Ended March 31, 2021 2020 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ (331,829 ) $ 806,869 Adjustment related to redeemable noncontrolling interests (9,428 ) 8,070 Net income (loss) available to common stockholders – basic and diluted $ (341,257 ) $ 814,939 Denominator: Weighted-average common shares outstanding – basic 494,864 495,415 Potential dilution from share-based awards — 1,569 Weighted-average common and common equivalent shares – diluted 494,864 496,984 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 8,484 3,876

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Loss Attributable to MGM Resorts International by Component	Changes in accumulated other comprehensive loss attributable to MGM Resorts International are as follows: Currency Translation Cash Flow Adjustments Hedges Other Total (In thousands) Balances, January 1, 2021 $ 12,964 $ (55,357 ) $ 11,716 $ (30,677 ) Other comprehensive income (loss) before reclassifications (13,022 ) 10,680 — (2,342 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 4,618 — 4,618 Other comprehensive income (loss), net of tax (13,022 ) 15,298 — 2,276 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuance — — 2,868 2,868 Redemption of Operating Partnership units — — 5,327 5,327 Other — — (2,482 ) (2,482 ) Changes in accumulated other comprehensive income (loss): (13,022 ) 15,298 5,713 7,989 Other comprehensive loss (income) attributable to noncontrolling interest 5,669 (8,199 ) — (2,530 ) Balances, March 31, 2021 $ 5,611 $ (48,258 ) $ 17,429 $ (25,218 )

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Schedule of Segment Information	The following tables present the Company’s segment information: Three Months Ended March 31, 2021 2020 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 232,094 $ 274,673 Rooms 144,329 362,864 Food and beverage 90,419 288,763 Entertainment, retail and other 78,122 207,506 544,964 1,133,806 Regional Operations Casino 596,655 536,630 Rooms 40,579 55,879 Food and beverage 50,364 95,092 Entertainment, retail and other 23,753 38,059 711,351 725,660 MGM China Casino 261,604 240,414 Rooms 13,512 15,209 Food and beverage 16,629 12,780 Entertainment, retail and other 4,609 3,484 296,354 271,887 Reportable segment net revenues 1,552,669 2,131,353 Corporate and other 95,078 121,464 $ 1,647,747 $ 2,252,817 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 108,119 $ 267,599 Regional Operations 241,982 151,720 MGM China 4,775 (21,990 ) Reportable segment Adjusted Property EBITDAR 354,876 397,329 Other operating income (expense) Corporate and other, net (136,991 ) (102,237 ) Preopening and start-up expenses (5 ) (122 ) Property transactions, net (26,071 ) (54,975 ) Gain on REIT transactions, net — 1,491,945 Depreciation and amortization (290,551 ) (318,290 ) CEO transition expense — (44,401 ) Triple-net operating lease and ground lease rent expense (189,620 ) (141,918 ) Income from unconsolidated affiliates related to real estate ventures 41,672 23,514 Operating income (loss) (246,690 ) 1,250,845 Non-operating income (expense) Interest expense, net of amounts capitalized (195,295 ) (157,137 ) Non-operating items from unconsolidated affiliates (20,836 ) (32,621 ) Other, net 32,185 (124,264 ) (183,946 ) (314,022 ) Income (loss) before income taxes (430,636 ) 936,823 Benefit (provision) for income taxes 94,698 (262,304 ) Net income (loss) (335,938 ) 674,519 Less: Net loss attributable to noncontrolling interests 4,109 132,350 Net income (loss) attributable to MGM Resorts International $ (331,829 ) $ 806,869

Organization - Additional Infor

Organization - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2021PropertySegment	Dec. 31, 2020
Organization Disclosure [Line Items]
Number of reportable segments | Segment	3
CityCenter Holdings LLC As Investee [Member]
Organization Disclosure [Line Items]
Percentage ownership interest	50.00%	50.00%
BetMGM LLC [Member]
Organization Disclosure [Line Items]
Percentage ownership interest	50.00%	50.00%
Infinity World Development Corp [Member] | CityCenter Holdings LLC As Investee [Member]
Organization Disclosure [Line Items]
Percentage ownership interest	50.00%
Entain plc [Member] | BetMGM LLC [Member]
Organization Disclosure [Line Items]
Percentage ownership interest	50.00%
Bellagio BREIT Venture [Member]
Organization Disclosure [Line Items]
Percentage of minority interest	5.00%
MGP BREIT Venture [Member]
Organization Disclosure [Line Items]
Partnership interest	50.10%
Percentage of minority interest	49.90%
Subsidiary of Blackstone Real Estate Income Trust [Member] | Bellagio BREIT Venture [Member]
Organization Disclosure [Line Items]
Percentage of ownership interest	95.00%
MGM China [Member]
Organization Disclosure [Line Items]
Percentage ownership interest	56.00%
Number of integrated casino | Property	2
Class A shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights	one vote per share
Non-Guarantor MGP Subsidiaries [Member] | Class B shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights	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%.
MGM Growth Properties LLC [Member]
Organization Disclosure [Line Items]
Minimum ownership percentage required for majority voting interest	30.00%
Partnership interest	42.10%
Percentage of minority interest	57.90%

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total assets	$ 37,330,767		$ 36,494,934
Investments in and advances to unconsolidated affiliates	$ 1,439,454		$ 1,447,043
Percentage of ownership interest	100.00%
Food and Beverage Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	$ 4,000	$ 10,000
Entertainment Retail and Other Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	$ 16,000	$ 19,000
Bellagio Blackstone Real Estate Income Trust [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest	5.00%
Investments in and advances to unconsolidated affiliates	$ 60,000
MGM Growth Properties LLC [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total assets	10,100,000
Total liabilities	$ 5,000,000

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Schedule of Contract and Contract - Related Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Outstanding Chip Liability [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	$ 212,671	$ 314,570
Balance at March 31	170,040	301,333
Increase / (decrease)	(42,631)	(13,237)
Loyalty Program [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	139,756	126,966
Balance at March 31	133,047	128,650
Increase / (decrease)	(6,709)	1,684
Customer Advances and Other [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	382,287	481,095
Balance at March 31	407,372	371,479
Increase / (decrease)	$ 25,085	$ (109,616)

Investments in and Advances t_3

Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments in and Advances to Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 1,439,454	$ 1,447,043
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	432,781	441,893
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	820,390	810,066
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	43,054	27,310
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 143,229	$ 167,774

Investments in and Advances t_4

Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments in and Advances to Unconsolidated Affiliates (Parenthetical) (Detail)	Mar. 31, 2021	Dec. 31, 2020
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%	50.00%
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest	50.10%	50.10%
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%	50.00%

Investments in and Advances t_5

Investments in and Advances to Unconsolidated Affiliates - Schedule of Share of Net Income (Loss) From Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Method Investments And Joint Ventures [Abstract]
Income (loss) from unconsolidated affiliates	$ (25,579)	$ 35,748
Non-operating items from unconsolidated affiliates	(20,836)	(32,621)
Net income from unconsolidated affiliates	$ (46,415)	$ 3,127

Investments in and Advances t_6

Investments in and Advances to Unconsolidated Affiliates - Schedule of Share of Income (Loss) From Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	$ (25,579)	$ 35,748
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	(2,831)	20,666
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	38,962	19,950
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	(59,236)	(10,677)
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	$ (2,474)	$ 5,809

Investments in and Advances t_7

Investments in and Advances to Unconsolidated Affiliates - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates	$ 0	$ 426
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates	15,000	12,000
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Contributions to unconsolidated affiliates	$ 75,000	$ 20,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, Gross	$ 13,353,975	$ 12,480,586
Less: Premiums, discounts, and unamortized debt issuance costs, net	(108,527)	(103,902)
Long-term debt	13,245,448	12,376,684
Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	500	10,000
MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	902,923	770,034
7.75% senior notes, due 2022 [Member]
Debt Instrument [Line Items]
Senior notes	1,000,000	1,000,000
6% senior notes, due 2023 [Member]
Debt Instrument [Line Items]
Senior notes	1,250,000	1,250,000
5.625% Operating Partnership senior notes, due 2024 [Member]
Debt Instrument [Line Items]
Senior notes	1,050,000	1,050,000
5.375% MGM China senior notes, due 2024 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
6.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
5.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	675,000	675,000
4.625% Operating Partnership senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	800,000	800,000
5.25% MGM China senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	500,000	500,000
5.875% MGM China senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
4.5% Operating Partnership senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Senior notes	500,000	500,000
4.625% senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Senior notes	400,000	400,000
5.75% Operating Partnership senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
5.5% senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Senior notes	675,000	675,000
4.75% MGM China senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	0
4.5% Operating Partnership senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Senior notes	350,000	350,000
4.75% senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
3.875% Operating Partnership senior notes, due 2029 [Member]
Debt Instrument [Line Items]
Senior notes	750,000	750,000
7% debentures, due 2036 [Member]
Debt Instrument [Line Items]
Senior notes	$ 552	$ 552

Long-Term Debt - Schedule of _2

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
7.75% senior notes, due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	7.75%	7.75%	7.75%
Long-term debt, maturity year		2022	2022
6% senior notes, due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	6.00%	6.00%	6.00%
Long-term debt, maturity year		2023	2023
5.625% Operating Partnership senior notes, due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.625%	5.625%	5.625%
Long-term debt, maturity year		2024	2024
5.375% MGM China senior notes, due 2024 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.375%	5.375%	5.375%
Long-term debt, maturity year		2024	2024
6.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	6.75%	6.75%	6.75%
Long-term debt, maturity year		2025	2025
5.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.75%	5.75%	5.75%
Long-term debt, maturity year		2025	2025
4.625% Operating Partnership senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.625%	4.625%	4.625%
Long-term debt, maturity year		2025	2025
5.25% MGM China senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.25%	5.25%	5.25%
Long-term debt, maturity year		2025	2025
5.875% MGM China senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.875%	5.875%	5.875%
Long-term debt, maturity year		2026	2026
4.5% Operating Partnership senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.50%	4.50%	4.50%
Long-term debt, maturity year		2026	2026
4.625% senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.625%	4.625%	4.625%
Long-term debt, maturity year		2026	2026
5.75% Operating Partnership senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.75%	5.75%	5.75%
Long-term debt, maturity year		2027	2027
5.5% senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	5.50%	5.50%	5.50%
Long-term debt, maturity year		2027	2027
4.75% MGM China senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.75%	4.75%
Long-term debt, maturity year	2027	2027
4.5% Operating Partnership senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.50%	4.50%	4.50%
Long-term debt, maturity year		2028	2028
4.75% senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	4.75%	4.75%	4.75%
Long-term debt, maturity year		2028	2028
3.875% Operating Partnership senior notes, due 2029 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	3.875%	3.875%	3.875%
Long-term debt, maturity year		2029	2029
7% debentures, due 2036 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)	7.00%	7.00%	7.00%
Long-term debt, maturity year		2036	2036

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2021	Feb. 28, 2021	Dec. 31, 2020	Jun. 30, 2020
Debt Instrument [Line Items]
Credit facility amount	$ 13,353,975,000	$ 13,353,975,000		$ 12,480,586,000
Fair value of interest rate swaps designated as cash flow hedges recorded as liability	29,000,000	29,000,000		41,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as current liability	5,000,000	5,000,000		1,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as long-term liability	24,000,000	24,000,000		40,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as liability	43,000,000	43,000,000		78,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as current liability	24,000,000	24,000,000		31,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as long-term liability	19,000,000	19,000,000		47,000,000
Long-term debt, fair value	$ 14,000,000,000	$ 14,000,000,000		$ 13,200,000,000
4.75% MGM China senior notes, due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity year	2027	2027
Long-term debt, principal amount	$ 750,000,000	$ 750,000,000
Long-term debt, interest rate (as a percent)	4.75%	4.75%
Long term debt, issued price percentage	99.97%
Operating Partnership Senior Credit Facility [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notional amount	$ 900,000,000	$ 900,000,000
Operating Partnership Senior Credit Facility [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]
Debt Instrument [Line Items]
Notional amount	$ 1,900,000,000	$ 1,900,000,000
Weighted Average fixed interest rate	1.821%	1.821%
Revolving Credit Facility [Member] | Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn	$ 1,000,000,000	$ 1,000,000,000
Credit facility amount	$ 1,350,000,000	$ 1,350,000,000
Debt instrument, interest rate	4.00%	4.00%
Unsecured Revolving Credit Facility [Member | MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility	$ 1,250,000,000	$ 1,250,000,000
Unsecured Revolving Credit Facility [Member | MGM China Second Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility	500,000,000	500,000,000
Line of credit facility drawn	0	0
Line of credit facility, current borrowing capacity	400,000,000	400,000,000			$ 400,000,000
Term Loan [Member] | MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn	$ 903,000,000	$ 903,000,000
Debt instrument, weighted average interest rate	2.88%	2.88%
Senior Credit Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility	$ 1,500,000,000	$ 1,500,000,000
Line of credit facility drawn	$ 0	$ 0
Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Increase the liquidity level including unrestricted cash, cash equivalents			$ 1,000,000,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Line Items]
Effective income tax rate	(22.00%)	28.00%
Marina District Development Company, LLC [Member]
Income Tax Disclosure [Line Items]
Unrecognized tax benefits reversed	$ 10,000,000
Reversal of unrecognized tax benefits reasonably possible	$ 20,000,000
MGM Grand Paradise SA [Member]
Income Tax Disclosure [Line Items]
Complementary tax rate on distributions of gaming profits (as a percent)	12.00%
Accrued amount	$ 0
Macau [Member]
Income Tax Disclosure [Line Items]
Decrease in foreign tax credit carry forward valuation allowance	$ 3,000,000
Special gaming tax rate	35.00%

Leases - Additional Information

Leases - Additional Information (Detail) $ in Millions	Mar. 01, 2021USD ($)	Dec. 01, 2020USD ($)	Mar. 31, 2021Renewal_period
Blackstone Real Estate Income Trust [Member] | Las Vegas Strip Resorts [Member] | Bellagio BREIT Venture [Member]
Leases [Line Items]
Lease agreement initial lease term			30 years
Lease, initial annual rent, beginning period			Nov. 15, 2019
Number of renewal periods, exercisable at option | Renewal_period			2
Lease agreement renewal period			10 years
Annual rent escalator from year one through year ten			2.00%
Annual rent escalator from year eleven through year twenty			2.00%
Annual rent escalator cap from year eleven through year twenty			3.00%
Annual rent escalator after year twenty			4.00%
Annual rent | $		$ 250
MGP BREIT Venture [Member] | Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Lease agreement initial lease term			30 years
Lease, initial annual rent, beginning period			Feb. 14, 2020
Number of renewal periods, exercisable at option | Renewal_period			2
Lease agreement renewal period			10 years
Annual rent | $	$ 298
Annual rent escalator from year one through year fifteen			2.00%
Annual rent escalator after year fifteen			2.00%
Annual rent escalator cap after year fifteen			3.00%

Leases - Schedule of Components

Leases - Schedule of Components of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease cost, primarily classified within "General and administrative"	$ 198,991	$ 152,536
Interest expense	(656)	(952)
Amortization expense	17,814	17,406
Total finance lease costs	$ 17,158	$ 16,454

Leases - Schedule of Componen_2

Leases - Schedule of Components of Lease Costs (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Line Items]
Operating lease cost	$ 198,991	$ 152,536
Bellagio BREIT Venture [Member]
Leases [Line Items]
Operating lease cost	83,000	83,000
Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Operating lease cost	$ 99,000	$ 51,000

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating leases
Operating lease right-of-use assets, net	$ 8,240,897	$ 8,286,694
Operating lease liabilities - current, classified within "Other accrued liabilities"	$ 29,837	$ 31,843
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease liabilities - long-term	$ 8,392,216	$ 8,390,117
Total operating lease liabilities	8,422,053	8,421,960
Finance leases
Finance lease right-of-use assets, net classified within "Property and equipment, net"	$ 183,155	$ 200,980
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property and equipment, net	Property and equipment, net
Finance lease liabilities - current, classified within "Other accrued liabilities"	$ 76,496	$ 80,193
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Finance lease liabilities - long-term, classified within "Other long-term obligations"	$ 116,591	$ 134,287
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term obligations	Other long-term obligations
Total finance lease liabilities	$ 193,087	$ 214,480
Weighted-average remaining lease term (years)
Operating leases	30 years	30 years
Finance leases	3 years	3 years
Weighted-average discount rate (%)
Operating leases	8.00%	8.00%
Finance leases	3.00%	3.00%

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Line Items]
Operating lease right-of-use assets, net	$ 8,240,897	$ 8,286,694
Operating lease liabilities - long-term	8,392,216	8,390,117
Bellagio BREIT Venture [Member]
Leases [Line Items]
Operating lease right-of-use assets, net	3,700,000	3,700,000
Operating lease liabilities - long-term	3,800,000	3,800,000
Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Operating lease right-of-use assets, net	4,000,000	4,000,000
Operating lease liabilities - long-term	$ 4,100,000	$ 4,100,000

Leases - Schedule of Cash Paid

Leases - Schedule of Cash Paid for Amounts Included in Measurement of Lease Liabilities and ROU Assets Obtained in Exchange for New Lease Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating cash outflows from operating leases	$ 154,504	$ 122,906
Operating cash outflows from finance leases	1,456	1,722
Financing cash outflows from finance leases	19,269	11,040
ROU assets obtained in exchange for new lease liabilities
Operating leases	0	4,121,442
Finance leases	$ 0	$ 167,089

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2021 (excluding the three months ended March 31, 2021)	$ 458,381
Operating Leases, 2022	616,243
Operating Leases, 2023	625,359
Operating Leases, 2024	635,750
Operating Leases, 2025	644,801
Operating Leases, Thereafter	19,801,045
Operating Leases, Total future minimum lease payments	22,781,579
Operating Leases, Less: Amount of lease payments representing interest	(14,359,526)
Total operating lease liabilities	8,422,053	$ 8,421,960
Less: Current portion	(29,837)	(31,843)
Operating lease liabilities	8,392,216	8,390,117
2021 (excluding the three months ended March 31, 2021)	62,116
Finance Leases, 2022	72,521
Finance Leases, 2023	63,714
Finance Leases, 2024	1,030
Finance Leases, 2025	515
Finance Leases, Thereafter	0
Finance Leases, Total future minimum lease payments	199,896
Finance Leases, Less: Amount of lease payments representing interest	(6,809)
Total finance lease liabilities	193,087	214,480
Less: Current portion	(76,496)	(80,193)
Long-term portion of lease liabilities	$ 116,591	$ 134,287

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	May 31, 2019
Blackstone Real Estate Income Trust [Member]
Loss Contingencies [Line Items]
Guarantee obligation amount	$ 3,010,000,000
Guarantee term	Bellagio BREIT Venture 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 Bellagio BREIT Venture, which 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 Bellagio owned by Bellagio BREIT Venture, and the debt obligation. This guarantee is accounted for under ASC 460 at fair value; such value is immaterial.
MGP BREIT Venture [Member]
Loss Contingencies [Line Items]
Guarantee obligation amount	$ 3,000,000,000
Guarantee term	MGP BREIT Venture shortfall guarantee. The Company provides a shortfall guarantee of the $3.0 billion principal amount of indebtedness (and any interest accrued and unpaid thereon) of MGP BREIT Venture, which has an initial term of twelve years, maturing in 2032, with an anticipated repayment date of March 2030. 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 Mandalay Bay and MGM Grand Las Vegas, owned by MGP BREIT Venture, and the debt obligation. This guarantee is accounted for under ASC 460 at fair value; such value is immaterial.   MGP BREIT Venture bad acts guarantee. The Operating Partnership provides a guarantee for the losses incurred by the lenders of the indebtedness of the MGP BREIT Venture arising out of certain bad acts by the Operating Partnership, its venture partner, or the venture, such as fraud or willful misconduct, based on the party’s percentage ownership of the MGP BREIT Venture. This guarantee is capped at 10% of the principal amount outstanding at the time of the loss. The Operating Partnership and its venture partner have separately indemnified each other for the other party’s share of the overall liability exposure, if at fault. The guarantee is accounted for under ASC 460 at fair value; such value is immaterial.
Percentage of principal amount outstanding guaranteed	10.00%
MGP Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Credit facility outstanding	$ 0
Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Credit facility outstanding	30,000,000
Letters of credit [Member] | MGP Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Line of credit facility	75,000,000
Letters of credit [Member] | Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Line of credit facility	$ 850,000,000
MGM Grand Paradise SA [Member] | Extension Agreement [Member]
Loss Contingencies [Line Items]
Guarantee obligation amount		$ 102,000,000
Guarantee term	MGM China bank guarantee. In connection with the extension of the expiration of the gaming subconcession to June 2022, MGM Grand Paradise provided a bank guarantee in an amount of approximately $102 million (when giving effect to foreign currency exchange rate fluctuations) to the government of Macau in May 2019 to warrant the fulfillment of an existing commitment of labor liabilities upon the expiration of the gaming subconcession in June 2022.

Income Per Share of Common St_3

Income Per Share of Common Stock - Schedule of Diluted Weighted-Average Number of Common and Common Equivalent Shares Adjustments for Potential Dilution of Share-Based Awards Outstanding (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net income (loss) attributable to MGM Resorts International	$ (331,829)	$ 806,869
Adjustment related to redeemable noncontrolling interests	(9,428)	8,070
Net income (loss) available to common stockholders – basic and diluted	$ (341,257)	$ 814,939
Denominator:
Weighted-average common shares outstanding – basic	494,864	495,415
Potential dilution from share-based awards	0	1,569
Weighted-average common and common equivalent shares – diluted	494,864	496,984
Antidilutive share-based awards excluded from the calculation of diluted earnings per share	8,484	3,876

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	Apr. 28, 2021	Mar. 15, 2021	May 03, 2021	Mar. 31, 2021	Mar. 31, 2021	Mar. 31, 2020	Feb. 29, 2020	May 31, 2018
Stockholders Equity Note [Line Items]
Cash proceeds for redemption					$ 50,828,000
Common stock repurchases, value					119,269,000	$ 353,720,000
Common Stock [Member]
Stockholders Equity Note [Line Items]
Cash proceeds for redemption					$ 0
Common stock repurchases, Shares					3,150	10,861
Common stock repurchases, value					$ 31,000	$ 109,000
Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Authorized amount of stock repurchase								$ 2,000,000,000
Share Repurchase Program Two [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Authorized amount of stock repurchase							$ 3,000,000,000
Repurchase of common stock, remaining amount				$ 2,900,000,000	$ 2,900,000,000
Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchases, Shares					3,000	11,000
Stock repurchased, average price per share					$ 37.87	$ 32.57
Common stock repurchases, value					$ 119,000,000	$ 354,000,000
Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Dividend declared date	Apr. 28, 2021
Dividends declared per share	$ 0.0025
Dividend paid date	Jun. 15, 2021
Dividend record date	Jun. 10, 2021
Subsequent Event [Member] | Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchases, Shares			1,000
Stock repurchased, average price per share			$ 39.10
Common stock repurchases, value			$ 56,000,000
MGM Growth Properties LLC [Member] | Operating Partnership [Member]
Stockholders Equity Note [Line Items]
Partnership interest		42.10%		42.10%	42.10%
Operating partnership units, redeemed				37,000
Operating partnership units, redeemed for cash				15,000
Operating partnership units, redeemed for Class A offering				22,000
Cash proceeds for redemption				$ 1,200,000,000
MGM Growth Properties LLC [Member] | Class A shares [Member]
Stockholders Equity Note [Line Items]
New issuance of shares		22,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Loss Attributable to MGM Resorts International by Component (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 11,179,908	$ 12,662,919
Other comprehensive income (loss)	2,276	(54,750)
Other changes in accumulated other comprehensive income (loss):
Ending Balance	11,232,519	13,332,001
MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuance	647,754	$ 507,551
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	12,964
Other comprehensive income (loss) before reclassifications	(13,022)
Amounts reclassified from accumulated other comprehensive loss to interest expense	0
Other comprehensive income (loss)	(13,022)
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units	0
Other	0
Changes in accumulated other comprehensive income (loss):	(13,022)
Other comprehensive loss (income) attributable to noncontrolling interest	5,669
Ending Balance	5,611
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuance	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(55,357)
Other comprehensive income (loss) before reclassifications	10,680
Amounts reclassified from accumulated other comprehensive loss to interest expense	4,618
Other comprehensive income (loss)	15,298
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units	0
Other	0
Changes in accumulated other comprehensive income (loss):	15,298
Other comprehensive loss (income) attributable to noncontrolling interest	(8,199)
Ending Balance	(48,258)
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuance	0
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	11,716
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss to interest expense	0
Other comprehensive income (loss)	0
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units	5,327
Other	(2,482)
Changes in accumulated other comprehensive income (loss):	5,713
Other comprehensive loss (income) attributable to noncontrolling interest	0
Ending Balance	17,429
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuance	2,868
AOCI Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(30,677)
Other comprehensive income (loss) before reclassifications	(2,342)
Amounts reclassified from accumulated other comprehensive loss to interest expense	4,618
Other comprehensive income (loss)	2,276
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units	5,327
Other	(2,482)
Changes in accumulated other comprehensive income (loss):	7,989
Other comprehensive loss (income) attributable to noncontrolling interest	(2,530)
Ending Balance	(25,218)
AOCI Including Portion Attributable to Noncontrolling Interest | MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuance	$ 2,868

Segment Information - Schedule

Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Revenues	$ 1,647,747	$ 2,252,817
Other operating income (expense)
Preopening and start-up expenses	(5)	(122)
Property transactions, net	(26,071)	(54,975)
Gain on REIT transactions, net	0	1,491,945
Depreciation and amortization	(290,551)	(318,290)
Triple-net operating lease and ground lease rent expense	(189,620)	(141,918)
Income from unconsolidated affiliates related to real estate ventures	41,672	23,514
Operating income (loss)	(246,690)	1,250,845
Non-operating income (expense)
Interest expense, net of amounts capitalized	(195,295)	(157,137)
Non-operating items from unconsolidated affiliates	(20,836)	(32,621)
Other, net	32,185	(124,264)
Total non-operating income (expense)	(183,946)	(314,022)
Income (loss) before income taxes	(430,636)	936,823
Benefit (provision) for income taxes	94,698	(262,304)
Net income (loss)	(335,938)	674,519
Less: Net loss attributable to noncontrolling interests	4,109	132,350
Net income (loss) attributable to MGM Resorts International	(331,829)	806,869
Chief Executive Officer [Member]
Other operating income (expense)
CEO transition expense	0	(44,401)
Reportable segments [Member]
Revenues
Revenues	1,552,669	2,131,353
Adjusted Property EBITDAR	354,876	397,329
Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	544,964	1,133,806
Adjusted Property EBITDAR	108,119	267,599
Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	711,351	725,660
Adjusted Property EBITDAR	241,982	151,720
Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	296,354	271,887
Adjusted Property EBITDAR	4,775	(21,990)
Corporate and other [Member]
Revenues
Revenues	95,078	121,464
Other operating income (expense)
Corporate and other, net	(136,991)	(102,237)
Casino [Member]
Revenues
Revenues	1,098,633	1,054,026
Casino [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	232,094	274,673
Casino [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	596,655	536,630
Casino [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	261,604	240,414
Rooms [Member]
Revenues
Revenues	198,419	433,951
Rooms [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	144,329	362,864
Rooms [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	40,579	55,879
Rooms [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	13,512	15,209
Food and Beverage [Member]
Revenues
Revenues	157,412	396,709
Food and Beverage [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	90,419	288,763
Food and Beverage [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	50,364	95,092
Food and Beverage [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	16,629	12,780
Entertainment, Retail and Other [Member]
Revenues
Revenues	135,222	269,945
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	78,122	207,506
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	23,753	38,059
Entertainment, Retail and Other [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	$ 4,609	$ 3,484

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands, shares in Millions	Apr. 01, 2021	Mar. 31, 2021	Mar. 31, 2021	Mar. 31, 2021	Mar. 15, 2021
Related Party Transaction [Line Items]
Cash proceeds for redemption			$ 50,828
Real Estate Assets and Leases [Member] | Blackstone Real Estate Income Trust [Member] | Bellagio BREIT Venture [Member]
Related Party Transaction [Line Items]
Ownership interest		5.00%	5.00%	5.00%
MGP [Member] | Blackstone Real Estate Income Trust [Member] | Lease Agreements [Member]
Related Party Transaction [Line Items]
Ownership interest		50.10%	50.10%	50.10%
MGM Growth Properties LLC [Member] | Operating Partnership [Member]
Related Party Transaction [Line Items]
Operating partnership units, redeemed		37
Cash proceeds for redemption		$ 1,200,000
Ownership interest		42.10%	42.10%	42.10%	42.10%
Master Lease [Member]
Related Party Transaction [Line Items]
Annual rent payments under master lease of properties				$ 828,000
Master Lease [Member] | Subsequent Event [Member]
Related Party Transaction [Line Items]
Annual rent payments under master lease of properties	$ 843,000
Fixed annual rent escalator percentage	2.00%