MGM Resorts International (MGM) 10-Q 6 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 04, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
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		481,880,377
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	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 5,626,232	$ 5,101,637
Accounts receivable, net	430,841	316,502
Inventories	79,019	88,323
Income tax receivable	226,193	243,415
Prepaid expenses and other	212,258	200,782
Total current assets	6,574,543	5,950,659
Property and equipment, net	14,344,684	14,632,091
Other assets
Investments in and advances to unconsolidated affiliates	1,484,717	1,447,043
Goodwill	2,089,212	2,091,278
Other intangible assets, net	3,545,815	3,643,748
Operating lease right-of-use assets, net	8,208,972	8,286,694
Other long-term assets, net	528,435	443,421
Total other assets	15,857,151	15,912,184
Total assets	36,776,378	36,494,934
Current liabilities
Accounts payable	210,654	142,523
Construction payable	21,740	30,149
Accrued interest on long-term debt	161,568	138,832
Other accrued liabilities	1,642,409	1,545,079
Total current liabilities	2,036,371	1,856,583
Deferred income taxes, net	2,170,945	2,153,016
Long-term debt, net	12,574,939	12,376,684
Operating lease liabilities	8,403,862	8,390,117
Other long-term obligations	375,615	472,084
Commitments and contingencies (Note 7)
Redeemable noncontrolling interests	110,524	66,542
Stockholders' equity
Common stock, $.01 par value: authorized 1,000,000,000 shares, issued and outstanding 486,529,984 and 494,317,865 shares	4,865	4,943
Capital in excess of par value	3,335,015	3,439,453
Retained earnings	2,861,474	3,091,007
Accumulated other comprehensive loss	(21,173)	(30,677)
Total MGM Resorts International stockholders' equity	6,180,181	6,504,726
Noncontrolling interests	4,923,941	4,675,182
Total stockholders' equity	11,104,122	11,179,908
Total liabilities and stockholders' equity	$ 36,776,378	$ 36,494,934

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 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	486,529,984	494,317,865
Common stock, outstanding shares	486,529,984	494,317,865

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenues	$ 2,267,962	$ 289,809	$ 3,915,709	$ 2,542,626
Expenses
General and administrative	590,209	473,564	1,136,616	1,047,870
Corporate expense	96,870	142,578	174,907	286,386
Preopening and start-up expenses	90	(82)	95	40
Property transactions, net	(28,906)	26,349	(2,835)	81,324
Gain on REIT transactions, net	0	0	0	(1,491,945)
Depreciation and amortization	283,625	299,206	574,176	617,496
Total expenses	2,087,540	1,315,985	3,956,398	2,353,705
Income (loss) from unconsolidated affiliates	83,338	(8,353)	57,759	27,395
Operating income (loss)	263,760	(1,034,529)	17,070	216,316
Non-operating income (expense)
Interest expense, net of amounts capitalized	(202,772)	(156,756)	(398,067)	(313,893)
Non-operating items from unconsolidated affiliates	(23,216)	(23,761)	(44,052)	(56,382)
Other, net	87,358	8,321	119,543	(115,943)
Total non-operating income (expense)	(138,630)	(172,196)	(322,576)	(486,218)
Income (loss) before income taxes	125,130	(1,206,725)	(305,506)	(269,902)
Benefit (provision) for income taxes	(34,826)	270,238	59,872	7,934
Net income (loss)	90,304	(936,487)	(245,634)	(261,968)
Less: Net loss attributable to noncontrolling interests	14,449	79,230	18,558	211,580
Net income (loss) attributable to MGM Resorts International	$ 104,753	$ (857,257)	$ (227,076)	$ (50,388)
Earnings (loss) per share
Basic	$ 0.14	$ (1.67)	$ (0.56)	$ (0.02)
Diluted	$ 0.14	$ (1.67)	$ (0.56)	$ (0.02)
Weighted average common shares outstanding
Basic	489,459	493,456	491,785	494,434
Diluted	495,302	493,456	491,785	494,434
Casino [Member]
Revenues
Revenues	$ 1,336,124	$ 163,649	$ 2,434,757	$ 1,217,675
Expenses
Expenses	616,903	200,393	1,168,808	829,063
Rooms [Member]
Revenues
Revenues	365,028	31,623	563,447	465,574
Expenses
Expenses	137,287	41,251	241,500	213,860
Food and Beverage [Member]
Revenues
Revenues	302,666	29,771	460,078	426,480
Expenses
Expenses	214,159	60,306	349,386	399,942
Entertainment, Retail and Other [Member]
Revenues
Revenues	189,011	48,569	324,233	318,514
Expenses
Expenses	102,170	56,223	180,551	255,286
Reimbursed Costs [Member]
Revenues
Revenues	75,133	16,197	133,194	114,383
Expenses
Expenses	$ 75,133	$ 16,197	$ 133,194	$ 114,383

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 90,304	$ (936,487)	$ (245,634)	$ (261,968)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	5,811	289	(7,211)	28,625
Unrealized gain (loss) on cash flow hedges	2,090	(7,114)	17,388	(90,200)
Other comprehensive income (loss)	7,901	(6,825)	10,177	(61,575)
Comprehensive income (loss)	98,205	(943,312)	(235,457)	(323,543)
Less: Comprehensive loss attributable to noncontrolling interests	10,213	82,074	11,792	239,426
Comprehensive income (loss) attributable to MGM Resorts International	$ 108,418	$ (861,238)	$ (223,665)	$ (84,117)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net loss	$ (245,634)	$ (261,968)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	574,176	617,496
Amortization of debt discounts, premiums and issuance costs	19,938	15,903
Loss on early retirement of debt	37	126,664
Provision for credit losses	3,724	61,859
Stock-based compensation	27,407	55,733
Property transactions, net	(2,835)	81,324
Gain on REIT transaction, net	0	(1,491,945)
Noncash lease expense	88,029	96,664
Other investment gains	(86,183)	0
Loss (income) from unconsolidated affiliates	(13,707)	28,987
Distributions from unconsolidated affiliates	49,625	38,238
Deferred income taxes	(68,821)	129,301
Change in operating assets and liabilities:
Accounts receivable	(138,153)	248,109
Inventories	9,267	(3,784)
Income taxes receivable and payable, net	17,222	(139,343)
Prepaid expenses and other	(11,835)	(23,492)
Accounts payable and accrued liabilities	187,500	(641,370)
Other	(41,341)	(23,878)
Net cash provided by (used in) operating activities	368,416	(1,085,502)
Cash flows from investing activities
Capital expenditures, net of construction payable	(183,392)	(140,208)
Dispositions of property and equipment	9,370	192
Proceeds from Mandalay Bay and MGM Grand Las Vegas transaction	0	2,455,839
Investments in unconsolidated affiliates	(101,845)	(38,344)
Distributions from unconsolidated affiliates	803	63,251
Other	1,342	385
Net cash provided by (used in) investing activities	(273,722)	2,341,115
Cash flows from financing activities
Net repayments under bank credit facilities – maturities of 90 days or less	(551,600)	(1,141,500)
Issuance of long-term debt	749,775	2,050,000
Retirement of senior notes	0	(846,797)
Debt issuance costs	(11,346)	(40,208)
Proceeds from issuance of bridge loan facility	0	1,304,625
Dividends paid to common shareholders	(2,457)	(75,137)
Distributions to noncontrolling interest owners	(155,576)	(154,648)
Purchases of common stock	(339,661)	(353,720)
Other	(51,718)	(19,496)
Net cash provided by financing activities	429,986	1,247,823
Effect of exchange rate on cash	(85)	2,465
Cash and cash equivalents
Net increase for the period	524,595	2,505,901
Balance, beginning of period	5,101,637	2,329,604
Balance, end of period	5,626,232	4,835,505
Supplemental cash flow disclosures
Interest paid, net of amounts capitalized	347,551	289,419
Federal, state and foreign income taxes paid, net	1,898	1,867
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	$ 792,569	$ 524,704

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)	(263,939)			$ 0			0			(50,388)			0			(50,388)			(213,551)
Currency translation adjustment	28,625			0			0			0			15,929			15,929			12,696
Cash flow hedges	(90,200)			0			0			0			(49,658)			(49,658)			(40,542)
Stock-based compensation	55,733			0			53,323			0			0			53,323			2,410
Issuance of common stock pursuant to stock-based compensation awards	(7,000)			$ 11			(7,011)			0			0			(7,000)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				994
Cash distributions and dividend payable to noncontrolling interest owners	(89,952)		$ (64,085)	$ 0		$ 0	0		$ 0	0		$ 0	0		$ 0	0		$ 0	(89,952)		$ (64,085)
Dividends declared and paid to common shareholders	(75,137)			0			0			(75,137)			0			(75,137)			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)
Adjustment of redeemable noncontrolling interest to redemption value	39,020			$ 0			39,020			0			0			39,020			0
Share issuances			507,551			0			64,188			0			646			64,834			442,717
Transaction		$ 1,725			$ 0			$ (6,503)			$ 0			$ (59)			$ (6,562)			$ 8,287
Redemption of Operating Partnership units	(3,205)			0			12,055			0			4,772			16,827			(20,032)
Other	(1,695)			0			(1,628)			0			(458)			(2,086)			391
Ending Balance at Jun. 30, 2020	12,348,782			$ 4,933			3,333,074			4,075,812			(39,030)			7,374,789			4,973,993
Ending Balance, Shares at Jun. 30, 2020				493,281
Beginning Balance at Mar. 31, 2020	13,332,001			$ 4,932			3,274,454			4,934,302			(39,774)			8,173,914			5,158,087
Beginning Balance, Shares at Mar. 31, 2020				493,155
Net income (loss)	(936,590)			$ 0			0			(857,257)			0			(857,257)			(79,333)
Currency translation adjustment	289			0			0			0			122			122			167
Cash flow hedges	(7,114)			0			0			0			(4,103)			(4,103)			(3,011)
Stock-based compensation	18,835			0			17,697			0			0			17,697			1,138
Issuance of common stock pursuant to stock-based compensation awards	(574)			$ 1			(575)			0			0			(574)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				126
Cash distributions and dividend payable to noncontrolling interest owners	(19,601)		(64,085)	$ 0		0	0		0	0		0	0		0	0		0	(19,601)		(64,085)
Dividends declared and paid to common shareholders	(1,233)			0			0			(1,233)			0			(1,233)			0
Adjustment of redeemable noncontrolling interest to redemption value	30,950			0			30,950			0			0			30,950			0
Redemption of Operating Partnership units	(3,205)			0			12,055			0			4,772			16,827			(20,032)
Other	(891)			0			(1,507)			0			(47)			(1,554)			663
Ending Balance at Jun. 30, 2020	12,348,782			$ 4,933			3,333,074			4,075,812			(39,030)			7,374,789			4,973,993
Ending Balance, Shares at Jun. 30, 2020				493,281
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)	(250,283)			$ 0			0			(227,076)			0			(227,076)			(23,207)
Currency translation adjustment	(7,211)			0			0			0			(4,120)			(4,120)			(3,091)
Cash flow hedges	17,388			0			0			0			7,531			7,531			9,857
Stock-based compensation	27,407			0			25,187			0			0			25,187			2,220
Issuance of common stock pursuant to stock-based compensation awards	(11,658)			$ 9			(11,667)			0			0			(11,658)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				944
Cash distributions and dividend payable to noncontrolling interest owners	(82,297)		(80,673)	$ 0		0	0		0	0		0	0		0	0		0	(82,297)		(80,673)
Dividends declared and paid to common shareholders	(2,457)			0			0			(2,457)			0			(2,457)			0
Repurchases of common stock	(339,661)			$ (87)			(339,574)			0			0			(339,661)			0
Repurchases of common stock, Shares				(8,732)
Adjustment of redeemable noncontrolling interest to redemption value	(46,439)			$ 0			(46,439)			0			0			(46,439)			0
Share issuances			759,264			0			99,894			0			3,239			103,133			656,131
Redemption of Operating Partnership units	(50,828)			0			171,332			0			5,327			176,659			(227,487)
Other	(8,338)			0			(3,171)			0			(2,473)			(5,644)			(2,694)
Ending Balance at Jun. 30, 2021	11,104,122			$ 4,865			3,335,015			2,861,474			(21,173)			6,180,181			4,923,941
Ending Balance, Shares at Jun. 30, 2021				486,530
Beginning Balance at Mar. 31, 2021	11,232,519			$ 4,919			3,569,186			2,757,941			(25,218)			6,306,828			4,925,691
Beginning Balance, Shares at Mar. 31, 2021				491,874
Net income (loss)	87,800			$ 0			0			104,753			0			104,753			(16,953)
Currency translation adjustment	5,811			0			0			0			3,233			3,233			2,578
Cash flow hedges	2,090			0			0			0			432			432			1,658
Stock-based compensation	10,858			0			9,684			0			0			9,684			1,174
Issuance of common stock pursuant to stock-based compensation awards	(2,314)			$ 2			(2,316)			0			0			(2,314)			0
Issuance of common stock pursuant to stock-based compensation awards, Shares				238
Cash distributions and dividend payable to noncontrolling interest owners	(3,290)		(80,673)	$ 0		0	0		0	0		0	0		0	0		0	(3,290)		(80,673)
Dividends declared and paid to common shareholders	(1,220)			0			0			(1,220)			0			(1,220)			0
Repurchases of common stock	(220,392)			$ (56)			(220,336)			0			0			(220,392)			0
Repurchases of common stock, Shares				(5,582)
Adjustment of redeemable noncontrolling interest to redemption value	(37,011)			$ 0			(37,011)			0			0			(37,011)			0
Share issuances			$ 111,510			$ 0			$ 16,752			$ 0			$ 371			$ 17,123			$ 94,387
Other	(1,566)			0			(944)			0			9			(935)			(631)
Ending Balance at Jun. 30, 2021	$ 11,104,122			$ 4,865			$ 3,335,015			$ 2,861,474			$ (21,173)			$ 6,180,181			$ 4,923,941
Ending Balance, Shares at Jun. 30, 2021				486,530

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Stockholders Equity [Abstract]
Dividends declared and paid to common shareholders	$ 0.0025	$ 0.0025	$ 0.005	$ 0.1525

Organization

Organization	6 Months Ended
	Jun. 30, 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 June 30, 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 June 30, 2021, the Company owned 41.6% of the Operating Partnership units, and MGP held the remaining 58.4% 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. On May 11, 2021, the Company entered into an agreement with MGP whereby MGP will acquire the real estate assets of MGM Springfield from the Company and MGM Springfield will be added to the MGP master lease between the Company and MGP through which MGP will lease the real property back to a subsidiary of the Company. Refer to Note 11 for additional information. On August 4, 2021, the Company entered into an agreement with VICI Properties, Inc. (“VICI”) and MGP whereby VICI will acquire MGP in a stock-for-stock transaction (such transaction, the “VICI Transaction”). Pursuant to the agreement, MGP Class A shareholders will receive 1.366 shares of newly issued VICI stock in exchange for each MGP Class A share outstanding and the Company will receive 1.366 units of the new VICI operating partnership (“VICI OP”) in exchange for each Operating Partnership unit held by the Company. The fixed exchange ratio represents an agreed upon price of $43 per share of MGP Class A share to the five-day volume weighted average price of VICI stock as of the close of business on July 30, 2021. Subsequent to the exchange, VICI OP will redeem the majority of the Company’s VICI OP units for cash consideration of $4.4 billion, with the Company retaining an approximate $370 million ownership interest in the VICI OP (based upon the close price of VICI stock as of August 3, 2021). MGP’s Class B share that is held by the Company will be cancelled. As part of the transaction, the Company will enter into an amended and restated master lease with VICI. The new master lease will have an initial term of 25 years, with three ten-year 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 (“Infinity World”), 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. Refer to Note 3 for additional information on this investment in unconsolidated affiliate. On June 30, 2021, the Company entered into an agreement pursuant to which the Company will purchase the 50% ownership interest in CityCenter held by Infinity World for cash consideration of $2.125 billion. The transaction is expected to close in the third quarter of 2021, subject to certain closing conditions. Upon close of the transaction, the Company will own 100% of CityCenter and, accordingly, will consolidate CityCenter in its financial statements. On June 30, 2021, the Company also entered into an agreement pursuant to which a fund managed by Blackstone Group Inc. will acquire the real estate assets of Aria and Vdara for cash consideration of $3.89 billion and lease the properties back to a subsidiary of the Company pursuant to a lease agreement. The Aria and Vdara lease will have an initial term of 30 years with three subsequent ten-year five-year one-year 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 the Company expects will continue to have, a significant impact on the Company’s 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 continued 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. Beginning in the latter part of the first quarter of 2021 and continuing into the second quarter of 2021, the Company’s domestic jurisdictions eased and removed prior operating restrictions, including capacity and occupancy limits as well as social distancing policies. However, certain operations and amenities are limited or constrained due to available staffing and/or mid-week visitation levels, and in July 2021, certain jurisdictions reinstated mask protection guidelines as a result of the emergence and spread of certain COVID-19 variants. Although all of the Company’s properties have re-opened, in light of the unpredictable nature of the pandemic, including the emergence and spread of COVID-19 variants, the properties may be subject to temporary, complete or partial shutdowns in the future. At this time, the Company cannot predict whether jurisdictions, states or the federal government will adopt similar or more restrictive measures in the future than in the past, including stay-at-home orders or the temporary closure of all or a portion of the Company’s properties, and are unable to predict the length of time it will take for the properties to fully return to normal operations. In Macau, following a temporary closure of the Company’s properties on February 5, 2020, operations resumed on February 20, 2020, subject to certain health safeguards, such as limiting 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. On August 3, 2021, four new COVID-19 cases were reported in Macau, the first of such cases since the onset of the pandemic in early 2020. As a result, the Macau government declared a state of immediate prevention and cancelled or suspended certain events and closed certain entertainment and leisure facilities throughout Macau, however gaming and hotel operations have remained open. On August 4, 2021, mass mandatory nucleic acid testing was imposed in Macau and the testing process is expected to take three days to complete. It is uncertain whether further closures, including the closure of the Company’s properties, or travel restrictions to Macau will be implemented based on the outcome of the test results.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 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 June 30, 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 $59 million as of June 30, 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 June 30, 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. For equity interests in entities in which the Company does not have significant influence, the Company records its equity investment under ASC 321 and reflects such investments within “Other long-term assets, net” on the consolidated balance sheets. During both the three and six months ended June 30, 2021, the Company recorded a gain of $86 million within “Other, net” on the Company’s consolidated statement of operations related primarily to the change in measurement of an equity instrument that previously qualified for the measurement alternative under ASC 321, which was discontinued upon the equity interest having a readily determinable fair value as a result of becoming exchange traded. 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 or in equity interests, 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 inputs when measuring its equity investments under ASC 321; • 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 June 30 144,975 338,390 136,659 131,641 513,971 306,752 Increase / (decrease) $ (67,696 ) $ 23,820 $ (3,097 ) $ 4,675 $ 131,684 $ (174,343 ) 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 and six months ended June 30, 2021, lease revenues from third-party tenants include $11 million and $16 million recorded within food and beverage revenue, respectively, and $20 million and $36 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. During the three and six months ended June 30, 2020, lease revenues from third-party tenants include $5 million and $15 million recorded within food and beverage revenue, respectively, and $14 million and $33 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	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2021 2020 (In thousands) CityCenter Holdings, LLC – CityCenter (50%) $ 515,472 $ 441,893 MGP BREIT Venture (50.1% owned by the Operating Partnership) 813,850 810,066 BetMGM (50%) 22,057 27,310 Other 133,338 167,774 $ 1,484,717 $ 1,447,043 The Company recorded its share of income (loss) from unconsolidated affiliates, including adjustments for basis differences, as follows: Three Months Ended Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Income (loss) from unconsolidated affiliates $ 83,338 $ (8,353 ) $ 57,759 $ 27,395 Non-operating items from unconsolidated affiliates (23,216 ) (23,761 ) (44,052 ) (56,382 ) $ 60,122 $ (32,114 ) $ 13,707 $ (28,987 ) The following table summarizes information related to the Company’s share of operating income (loss) from unconsolidated affiliates: Three Months Ended Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) CityCenter $ 90,212 $ (39,113 ) $ 87,380 $ (18,447 ) MGP BREIT Venture 38,954 38,861 77,917 58,811 BetMGM (45,979 ) (5,241 ) (105,215 ) (15,918 ) Other 151 (2,860 ) (2,323 ) 2,949 $ 83,338 $ (8,353 ) $ 57,759 $ 27,395 MGP BREIT Venture distributions. For the three and six months ended June 30, 2021, the Operating Partnership received $32 million and $47 million in distributions from MGP BREIT Venture, respectively. For the three and six months ended June 30, 2020, the Operating Partnership received $23 million and $35 million in distributions from MGP BREIT Venture, respectively. BetMGM contributions. For the three and six months ended June 30, 2021, the Company contributed $25 million and $100 million to BetMGM, respectively. For the three and six months ended June 30, 2020, the Company contributed $10 million and $30 million to BetMGM, respectively. CityCenter equity purchase. As further discussed in Note 1, in June 2021, the Company entered into an agreement pursuant to which the Company will purchase the 50% ownership interest in CityCenter held by Infinity World. The transaction is expected to close in the third quarter of 2021, subject to certain closing conditions. Upon close of the transaction, the Company will own 100% of CityCenter and, accordingly, will consolidate CityCenter in its financial statements. CityCenter distributions. In April 2020, CityCenter paid a $101 million distribution, of which the Company received its 50% share, or approximately $51 million. CityCenter sale of Harmon land. In June 2021, CityCenter closed the sale of its Harmon land for $80 million on which it recorded a $30 million gain. The Company recorded a $50 million gain, which included $15 million of its 50% share of the gain recorded by CityCenter and $35 million representing the reversal of certain basis differences.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 4 — LONG-TERM DEBT Long-term debt consisted of the following: June 30, December 31, 2021 2020 (In thousands) Operating Partnership senior credit facility $ — $ 10,000 MGM China first revolving credit facility 226,667 770,034 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 12,677,219 12,480,586 Less: Premiums, discounts, and unamortized debt issuance costs, net (102,280 ) (103,902 ) $ 12,574,939 $ 12,376,684 Debt due within one year of the June 30, 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 June 30, 2021 , the Company’s senior credit facility consisted of a $1.5 billion revolving facility . At June 30, 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 June 30, 2021. Operating Partnership senior credit facility and bridge facility. At June 30, 2021, the Operating Partnership senior credit facility consisted of a $1.35 billion revolving credit facility. At June 30, 2021, no amounts were drawn on the revolving credit facility. The Operating Partnership was in compliance with its revolving credit facility covenants at June 30, 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 June 30, 2021, the Operating Partnership has currently effective interest rate swap agreements on which it pays a weighted average fixed rate of 1.783% on total notional amount of $700 million. 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 $33 million, recorded as a long-term liability, 38 MGM China first revolving credit facility. At June 30, 2021, the MGM China first revolving credit facility consisted of a $1.25 billion unsecured revolving credit facility. At June 30, 2021, $227 million was drawn on the MGM China first revolving credit facility and the weighted average interest rate was 2.84%. 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 June 30, 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 June 30, 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 $13.4 billion and $13.2 billion at June 30, 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	6 Months Ended
	Jun. 30, 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 provision of 27.8% on income before income taxes and a benefit of 19.6% on loss before income taxes for the three and six months ended June 30, 2021, respectively, compared to benefits of 22.4% and 2.9% on loss before income taxes for the three and six months ended June 30, 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 $2 million and $5 million in the three and six months ended June 30, 2021, respectively, 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 accepted the terms of an extension of its annual fee arrangement on July 26, 2021. The extension covers the distributions of profits earned for the period of April 1, 2020 through June 26, 2022. The agreement with the Macau government allows MGM Grand Paradise to settle the 12% complementary tax that would otherwise be due by its shareholder, MGM China, on distributions of its gaming profits by paying a flat annual fee regardless of the amount of distributable dividends. The agreement requires payments of approximately $1.4 million for the period April 1, 2020 through December 31, 2020, $1.9 million for January 1, 2021 through December 31, 2021, and $0.9 million for the period January 1, 2022 through June 26, 2022. No amounts have been accrued for the 12% complementary tax on distributions of gaming profits earned after March 31, 2020 through the period ending June 30, 2021 since MGM Grand Paradise generated losses and the extension of the annual fee arrangement is not effective during this period of time. The Company will accrue income tax expense for amounts due under the extension beginning in the period the extension is executed. During the three months ended June 30, 2021, the Company reached a settlement with the IRS Appeals Office on the examination of its 2014 U.S. consolidated federal income tax return. No cash tax payments were due as a result of the settlement. During the six months ended June 30, 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 federal and New Jersey audit closures, the Company reversed $20 million and $30 million of unrecognized tax benefits during the three and six months ended June 30, 2021, respectively.

Leases

Leases	6 Months Ended
	Jun. 30, 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 June 30, 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 June 30, 2021. Other information. Components of lease costs and other information related to the Company’s leases was as follows: Three Months Ended Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 198,963 $ 200,105 $ 397,954 $ 352,641 Finance lease costs Interest expense (2) $ (396 ) $ (12,854 ) $ (1,052 ) $ (13,806 ) Amortization expense 17,672 17,238 35,486 34,644 Total finance lease costs $ 17,276 $ 4,384 $ 34,434 $ 20,838 (1) Operating lease cost includes $83 million for each of the three months ended June 30, 2021 and 2020 and, $166 million for each of the six months ended June 30, 2021 and 2020 related to the Bellagio lease. Operating lease cost includes $99 million for each of the three months ended June 30, 2021 and 2020 and $197 million and $150 million for the six months ended June 30, 2021 and 2020, respectively, related to the Mandalay Bay and MGM Grand Las Vegas lease. (2) For the three and six months ended June 30, 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. June 30, December 31, 2021 2020 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (1) $ 8,208,972 $ 8,286,694 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 31,402 $ 31,843 Operating lease liabilities - long-term (2) 8,403,862 8,390,117 Total operating lease liabilities $ 8,435,264 $ 8,421,960 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 165,487 $ 200,980 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 76,681 $ 80,193 Finance lease liabilities - long-term, classified within "Other long-term obligations" 98,970 134,287 Total finance lease liabilities $ 175,651 $ 214,480 Weighted-average remaining lease term (years) Operating leases 29 30 Finance leases 2 3 Weighted-average discount rate (%) Operating leases 8 8 Finance leases 3 3 (1) As of June 30, 2021 and December 31, 2020, operating lease right-of-use assets, net included $3.6 billion and $3.7 billion related to the Bellagio lease, respectively, and $4.0 billion related to the Mandalay Bay and MGM Grand Las Vegas lease for each of the respective periods. (2) As of June 30, 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 Las Vegas lease for each of the respective periods. Six Months Ended June 30, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 309,321 $ 273,162 Operating cash outflows from finance leases 2,576 865 Financing cash outflows from finance leases (1) 35,194 9,459 ROU assets obtained in exchange for new lease liabilities Operating leases $ 1,651 $ 4,121,810 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, (In thousands) 2021 (excluding the six months ended June 30, 2021) $ 305,183 $ 43,448 2022 619,521 72,523 2023 628,027 63,716 2024 638,031 1,032 2025 647,148 516 Thereafter 19,802,317 — Total future minimum lease payments 22,640,227 181,235 Less: Amount of lease payments representing interest (14,204,963 ) (5,584 ) Present value of future minimum lease payments 8,435,264 175,651 Less: Current portion (31,402 ) (76,681 ) Long-term portion of lease liabilities $ 8,403,862 $ 98,970

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 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 June 30, 2021, $31 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 June 30, 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 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. The amount of the bank guarantee was approximately $103 million as of June 30, 2021 when giving effect to foreign currency exchange rate fluctuation. 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	6 Months Ended
	Jun. 30, 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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ 104,753 $ (857,257 ) $ (227,076 ) $ (50,388 ) Adjustment related to redeemable noncontrolling interests (37,011 ) 32,182 (46,439 ) 40,251 Net income (loss) available to common stockholders – basic 67,742 (825,075 ) (273,515 ) (10,137 ) Other — (20 ) — — Net income (loss) attributable to common stockholders - diluted $ 67,742 $ (825,095 ) $ (273,515 ) $ (10,137 ) Denominator: Weighted-average common shares outstanding – basic 489,459 493,456 491,785 494,434 Potential dilution from share-based awards 5,843 — — — Weighted-average common and common equivalent shares – diluted 495,302 493,456 491,785 494,434 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 1 5,370 8,040 4,623

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 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 the 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 MGP Class A share issuances – At-the-Market (“ATM”) program. During the three months ended June 30, 2021, MGP issued approximately 3 million Class A shares under its ATM program. In connection with the issuances, the Operating Partnership issued approximately 3 million Operating Partnership units to MGP. 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 income. Subsequent to the collective issuances, the Company indirectly owned 41.6% of the partnership units in the Operating Partnership. Other equity activity MGM Resorts International dividends. On August 4, 2021 the Company’s Board of Directors approved a quarterly dividend of $0.0025 per share that will be payable on September 15, 2021 to holders of record on September 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 June 30, 2021, the Company repurchased approximately 6 million shares of its common stock at an average price of $39.48 per share for an aggregate amount of $220 million. During the six months ended June 30, 2021, the Company repurchased approximately 9 million shares of its common stock at an average price of $38.90 per share for an aggregate amount of $340 million. Repurchased shares were retired. During the six months ended June 30, 2021, 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 $2.7 billion as of June 30, 2021. Subsequent to the quarter ended June 30, 2021, the Company repurchased 7 million shares of its common stock at an average price of $38.72 per share for an aggregate amount of $275 million. Repurchased shares will be retired. There were no repurchases made during the three months ended June 30, 2020. During the six months ended June 30, 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, April 1, 2021 $ 5,611 $ (48,258 ) $ 17,429 $ (25,218 ) Other comprehensive income (loss) before reclassifications 5,811 (4,674 ) — 1,137 Amounts reclassified from accumulated other comprehensive loss to interest expense — 6,764 — 6,764 Other comprehensive income, net of tax 5,811 2,090 — 7,901 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 371 371 Other — — 9 9 Changes in accumulated other comprehensive income: 5,811 2,090 380 8,281 Other comprehensive income attributable to noncontrolling interest (2,578 ) (1,658 ) — (4,236 ) Balances, June 30, 2021 $ 8,844 $ (47,826 ) $ 17,809 $ (21,173 ) Balances, January 1, 2021 $ 12,964 $ (55,357 ) $ 11,716 $ (30,677 ) Other comprehensive income (loss) before reclassifications (7,211 ) 6,006 — (1,205 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 11,382 — 11,382 Other comprehensive income (loss), net of tax (7,211 ) 17,388 — 10,177 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 3,239 3,239 Redemption of Operating Partnership units — — 5,327 5,327 Other — — (2,473 ) (2,473 ) Changes in accumulated other comprehensive income (loss): (7,211 ) 17,388 6,093 16,270 Other comprehensive loss (income) attributable to noncontrolling interest 3,091 (9,857 ) — (6,766 ) Balances, June 30, 2021 $ 8,844 $ (47,826 ) $ 17,809 $ (21,173 )

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 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, restructuring costs (which represents costs related to severance, accelerated stock compensation expense, and consulting fees directly related to the operating model component of the MGM 2020 Plan), 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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 353,473 $ 63,028 $ 585,567 $ 337,701 Rooms 298,714 26,105 443,043 388,969 Food and beverage 215,631 21,026 306,050 309,789 Entertainment, retail and other 136,750 40,652 214,872 248,158 1,004,568 150,811 1,549,532 1,284,617 Regional Operations Casino 707,864 77,177 1,304,519 613,807 Rooms 48,924 4,181 89,503 60,060 Food and beverage 69,149 4,314 119,513 99,406 Entertainment, retail and other 30,345 3,592 54,098 41,651 856,282 89,264 1,567,633 814,924 MGM China Casino 270,935 23,284 532,539 263,698 Rooms 17,389 1,335 30,902 16,544 Food and beverage 17,886 4,431 34,515 17,211 Entertainment, retail and other 4,421 4,148 9,029 7,632 310,631 33,198 606,985 305,085 Reportable segment net revenues 2,171,481 273,273 3,724,150 2,404,626 Corporate and other 96,481 16,536 191,559 138,000 $ 2,267,962 $ 289,809 $ 3,915,709 $ 2,542,626 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 396,805 $ (104,447 ) $ 504,924 $ 163,152 Regional Operations 318,348 (112,085 ) 560,330 39,635 MGM China 8,581 (116,288 ) 13,356 (138,278 ) Reportable segment Adjusted Property EBITDAR 723,734 (332,820 ) 1,078,610 64,509 Other operating income (expense) Corporate and other, net (106,977 ) (159,342 ) (243,968 ) (261,579 ) Preopening and start-up expenses (90 ) 82 (95 ) (40 ) Property transactions, net 28,906 (26,349 ) 2,835 (81,324 ) Gain on REIT transactions, net — — — 1,491,945 Depreciation and amortization (283,625 ) (299,206 ) (574,176 ) (617,496 ) CEO transition expense — — — (44,401 ) October 1 litigation settlement — (49,000 ) — (49,000 ) Restructuring — (19,882 ) — (19,882 ) Triple-net operating lease and ground lease rent expense (189,609 ) (189,567 ) (379,229 ) (331,485 ) Gain related to sale of Harmon land - unconsolidated affiliate 49,755 — 49,755 — Income from unconsolidated affiliates related to real estate ventures 41,666 41,555 83,338 65,069 Operating income (loss) 263,760 (1,034,529 ) 17,070 216,316 Non-operating income (expense) Interest expense, net of amounts capitalized (202,772 ) (156,756 ) (398,067 ) (313,893 ) Non-operating items from unconsolidated affiliates (23,216 ) (23,761 ) (44,052 ) (56,382 ) Other, net 87,358 8,321 119,543 (115,943 ) (138,630 ) (172,196 ) (322,576 ) (486,218 ) Income (loss) before income taxes 125,130 (1,206,725 ) (305,506 ) (269,902 ) Benefit (provision) for income taxes (34,826 ) 270,238 59,872 7,934 Net income (loss) 90,304 (936,487 ) (245,634 ) (261,968 ) Less: Net loss attributable to noncontrolling interests 14,449 79,230 18,558 211,580 Net income (loss) attributable to MGM Resorts International $ 104,753 $ (857,257 ) $ (227,076 ) $ (50,388 )

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 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. In May 2021, the Company entered into an agreement with MGP whereby MGP will acquire the real estate assets of MGM Springfield from the Company for $400 million of cash consideration. MGM Springfield will be added to the master lease between the Company and MGP. Following the closing of the transaction, the annual rent payment to MGP will increase by $30 million, $27 million of which will be fixed and contractually grow at 2% per year with escalators subject to the tenant meeting an adjusted net revenue to rent ratio. The transaction is expected to close in the fourth quarter of 2021, upon receipt of interim regulatory approvals from the Massachusetts Gaming Commission and the satisfaction of other customary closing conditions. Final regulatory approvals, which are not necessary for the transaction to close, are expected to be received within nine to twelve months following the interim regulatory approval. Until final regulatory approvals are obtained, the parties will be subject to a trust agreement, which will provide for the property to go into a trust (or, at the Company’s option, be returned to the Company) during the interim period in the event that the regulator finds reasonable cause to believe that MGP may not be found suitable. The property will then remain in trust until a final determination regarding MGP’s suitability is made. 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. As further described in Note 1, in August 2021, the Company entered into an agreement with VICI and MGP whereby VICI will acquire MGP in a stock-for-stock transaction. Pursuant to the agreement, MGP Class A shareholders will receive shares of newly issued VICI stock in exchange for each Class A share of MGP and the Company will receive VICI OP units in exchange for each Operating Partnership unit that the Company holds. The fixed exchange ratio represents an agreed upon price of $43 per share of MGP Class A share to the five-day volume weighted average price of VICI stock as of the close of business on July 30, 2021. Subsequent to the exchange, VICI OP will redeem the majority of the Company’s VICI OP units for cash consideration of $4.4 billion, with the Company retaining an approximate $370 million ownership interest in VICI OP (based upon the close price of VICI stock as of August 3, 2021). MGP’s Class B share that is held by the Company will be cancelled. As part of the transaction, the Company will enter into an amended and restated master lease with VICI. The transaction is expected to close in the first half of 2022, subject to customary closing conditions, regulatory approvals, and approval by VICI stockholders. 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)	6 Months Ended
	Jun. 30, 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 June 30, 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 $59 million as of June 30, 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 June 30, 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. For equity interests in entities in which the Company does not have significant influence, the Company records its equity investment under ASC 321 and reflects such investments within “Other long-term assets, net” on the consolidated balance sheets. During both the three and six months ended June 30, 2021, the Company recorded a gain of $86 million within “Other, net” on the Company’s consolidated statement of operations related primarily to the change in measurement of an equity instrument that previously qualified for the measurement alternative under ASC 321, which was discontinued upon the equity interest having a readily determinable fair value as a result of becoming exchange traded.
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 or in equity interests, 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 inputs when measuring its equity investments under ASC 321; • 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 June 30 144,975 338,390 136,659 131,641 513,971 306,752 Increase / (decrease) $ (67,696 ) $ 23,820 $ (3,097 ) $ 4,675 $ 131,684 $ (174,343 ) 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	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 and six months ended June 30, 2021, lease revenues from third-party tenants include $11 million and $16 million recorded within food and beverage revenue, respectively, and $20 million and $36 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. During the three and six months ended June 30, 2020, lease revenues from third-party tenants include $5 million and $15 million recorded within food and beverage revenue, respectively, and $14 million and $33 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)	6 Months Ended
	Jun. 30, 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 June 30 144,975 338,390 136,659 131,641 513,971 306,752 Increase / (decrease) $ (67,696 ) $ 23,820 $ (3,097 ) $ 4,675 $ 131,684 $ (174,343 )

Investments in and Advances t_2

Investments in and Advances to Unconsolidated Affiliates (Tables)	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2021 2020 (In thousands) CityCenter Holdings, LLC – CityCenter (50%) $ 515,472 $ 441,893 MGP BREIT Venture (50.1% owned by the Operating Partnership) 813,850 810,066 BetMGM (50%) 22,057 27,310 Other 133,338 167,774 $ 1,484,717 $ 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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Income (loss) from unconsolidated affiliates $ 83,338 $ (8,353 ) $ 57,759 $ 27,395 Non-operating items from unconsolidated affiliates (23,216 ) (23,761 ) (44,052 ) (56,382 ) $ 60,122 $ (32,114 ) $ 13,707 $ (28,987 )
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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) CityCenter $ 90,212 $ (39,113 ) $ 87,380 $ (18,447 ) MGP BREIT Venture 38,954 38,861 77,917 58,811 BetMGM (45,979 ) (5,241 ) (105,215 ) (15,918 ) Other 151 (2,860 ) (2,323 ) 2,949 $ 83,338 $ (8,353 ) $ 57,759 $ 27,395

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: June 30, December 31, 2021 2020 (In thousands) Operating Partnership senior credit facility $ — $ 10,000 MGM China first revolving credit facility 226,667 770,034 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 12,677,219 12,480,586 Less: Premiums, discounts, and unamortized debt issuance costs, net (102,280 ) (103,902 ) $ 12,574,939 $ 12,376,684

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 198,963 $ 200,105 $ 397,954 $ 352,641 Finance lease costs Interest expense (2) $ (396 ) $ (12,854 ) $ (1,052 ) $ (13,806 ) Amortization expense 17,672 17,238 35,486 34,644 Total finance lease costs $ 17,276 $ 4,384 $ 34,434 $ 20,838 (1) Operating lease cost includes $83 million for each of the three months ended June 30, 2021 and 2020 and, $166 million for each of the six months ended June 30, 2021 and 2020 related to the Bellagio lease. Operating lease cost includes $99 million for each of the three months ended June 30, 2021 and 2020 and $197 million and $150 million for the six months ended June 30, 2021 and 2020, respectively, related to the Mandalay Bay and MGM Grand Las Vegas lease. (2) For the three and six months ended June 30, 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	June 30, December 31, 2021 2020 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (1) $ 8,208,972 $ 8,286,694 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 31,402 $ 31,843 Operating lease liabilities - long-term (2) 8,403,862 8,390,117 Total operating lease liabilities $ 8,435,264 $ 8,421,960 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 165,487 $ 200,980 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 76,681 $ 80,193 Finance lease liabilities - long-term, classified within "Other long-term obligations" 98,970 134,287 Total finance lease liabilities $ 175,651 $ 214,480 Weighted-average remaining lease term (years) Operating leases 29 30 Finance leases 2 3 Weighted-average discount rate (%) Operating leases 8 8 Finance leases 3 3 (1) As of June 30, 2021 and December 31, 2020, operating lease right-of-use assets, net included $3.6 billion and $3.7 billion related to the Bellagio lease, respectively, and $4.0 billion related to the Mandalay Bay and MGM Grand Las Vegas lease for each of the respective periods. (2) As of June 30, 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 Las Vegas 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	Six Months Ended June 30, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 309,321 $ 273,162 Operating cash outflows from finance leases 2,576 865 Financing cash outflows from finance leases (1) 35,194 9,459 ROU assets obtained in exchange for new lease liabilities Operating leases $ 1,651 $ 4,121,810 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, (In thousands) 2021 (excluding the six months ended June 30, 2021) $ 305,183 $ 43,448 2022 619,521 72,523 2023 628,027 63,716 2024 638,031 1,032 2025 647,148 516 Thereafter 19,802,317 — Total future minimum lease payments 22,640,227 181,235 Less: Amount of lease payments representing interest (14,204,963 ) (5,584 ) Present value of future minimum lease payments 8,435,264 175,651 Less: Current portion (31,402 ) (76,681 ) Long-term portion of lease liabilities $ 8,403,862 $ 98,970

Income Per Share of Common St_2

Income Per Share of Common Stock (Tables)	6 Months Ended
	Jun. 30, 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 Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ 104,753 $ (857,257 ) $ (227,076 ) $ (50,388 ) Adjustment related to redeemable noncontrolling interests (37,011 ) 32,182 (46,439 ) 40,251 Net income (loss) available to common stockholders – basic 67,742 (825,075 ) (273,515 ) (10,137 ) Other — (20 ) — — Net income (loss) attributable to common stockholders - diluted $ 67,742 $ (825,095 ) $ (273,515 ) $ (10,137 ) Denominator: Weighted-average common shares outstanding – basic 489,459 493,456 491,785 494,434 Potential dilution from share-based awards 5,843 — — — Weighted-average common and common equivalent shares – diluted 495,302 493,456 491,785 494,434 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 1 5,370 8,040 4,623

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 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, April 1, 2021 $ 5,611 $ (48,258 ) $ 17,429 $ (25,218 ) Other comprehensive income (loss) before reclassifications 5,811 (4,674 ) — 1,137 Amounts reclassified from accumulated other comprehensive loss to interest expense — 6,764 — 6,764 Other comprehensive income, net of tax 5,811 2,090 — 7,901 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 371 371 Other — — 9 9 Changes in accumulated other comprehensive income: 5,811 2,090 380 8,281 Other comprehensive income attributable to noncontrolling interest (2,578 ) (1,658 ) — (4,236 ) Balances, June 30, 2021 $ 8,844 $ (47,826 ) $ 17,809 $ (21,173 ) Balances, January 1, 2021 $ 12,964 $ (55,357 ) $ 11,716 $ (30,677 ) Other comprehensive income (loss) before reclassifications (7,211 ) 6,006 — (1,205 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 11,382 — 11,382 Other comprehensive income (loss), net of tax (7,211 ) 17,388 — 10,177 Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 3,239 3,239 Redemption of Operating Partnership units — — 5,327 5,327 Other — — (2,473 ) (2,473 ) Changes in accumulated other comprehensive income (loss): (7,211 ) 17,388 6,093 16,270 Other comprehensive loss (income) attributable to noncontrolling interest 3,091 (9,857 ) — (6,766 ) Balances, June 30, 2021 $ 8,844 $ (47,826 ) $ 17,809 $ (21,173 )

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Information	The following tables present the Company’s segment information: Three Months Ended Six Months Ended June 30, June 30, 2021 2020 2021 2020 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 353,473 $ 63,028 $ 585,567 $ 337,701 Rooms 298,714 26,105 443,043 388,969 Food and beverage 215,631 21,026 306,050 309,789 Entertainment, retail and other 136,750 40,652 214,872 248,158 1,004,568 150,811 1,549,532 1,284,617 Regional Operations Casino 707,864 77,177 1,304,519 613,807 Rooms 48,924 4,181 89,503 60,060 Food and beverage 69,149 4,314 119,513 99,406 Entertainment, retail and other 30,345 3,592 54,098 41,651 856,282 89,264 1,567,633 814,924 MGM China Casino 270,935 23,284 532,539 263,698 Rooms 17,389 1,335 30,902 16,544 Food and beverage 17,886 4,431 34,515 17,211 Entertainment, retail and other 4,421 4,148 9,029 7,632 310,631 33,198 606,985 305,085 Reportable segment net revenues 2,171,481 273,273 3,724,150 2,404,626 Corporate and other 96,481 16,536 191,559 138,000 $ 2,267,962 $ 289,809 $ 3,915,709 $ 2,542,626 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 396,805 $ (104,447 ) $ 504,924 $ 163,152 Regional Operations 318,348 (112,085 ) 560,330 39,635 MGM China 8,581 (116,288 ) 13,356 (138,278 ) Reportable segment Adjusted Property EBITDAR 723,734 (332,820 ) 1,078,610 64,509 Other operating income (expense) Corporate and other, net (106,977 ) (159,342 ) (243,968 ) (261,579 ) Preopening and start-up expenses (90 ) 82 (95 ) (40 ) Property transactions, net 28,906 (26,349 ) 2,835 (81,324 ) Gain on REIT transactions, net — — — 1,491,945 Depreciation and amortization (283,625 ) (299,206 ) (574,176 ) (617,496 ) CEO transition expense — — — (44,401 ) October 1 litigation settlement — (49,000 ) — (49,000 ) Restructuring — (19,882 ) — (19,882 ) Triple-net operating lease and ground lease rent expense (189,609 ) (189,567 ) (379,229 ) (331,485 ) Gain related to sale of Harmon land - unconsolidated affiliate 49,755 — 49,755 — Income from unconsolidated affiliates related to real estate ventures 41,666 41,555 83,338 65,069 Operating income (loss) 263,760 (1,034,529 ) 17,070 216,316 Non-operating income (expense) Interest expense, net of amounts capitalized (202,772 ) (156,756 ) (398,067 ) (313,893 ) Non-operating items from unconsolidated affiliates (23,216 ) (23,761 ) (44,052 ) (56,382 ) Other, net 87,358 8,321 119,543 (115,943 ) (138,630 ) (172,196 ) (322,576 ) (486,218 ) Income (loss) before income taxes 125,130 (1,206,725 ) (305,506 ) (269,902 ) Benefit (provision) for income taxes (34,826 ) 270,238 59,872 7,934 Net income (loss) 90,304 (936,487 ) (245,634 ) (261,968 ) Less: Net loss attributable to noncontrolling interests 14,449 79,230 18,558 211,580 Net income (loss) attributable to MGM Resorts International $ 104,753 $ (857,257 ) $ (227,076 ) $ (50,388 )

Organization - Additional Infor

Organization - Additional Information (Detail) $ / shares in Units, $ in Millions	Aug. 04, 2021USD ($)Renewal_period$ / sharesshares	Jun. 30, 2021USD ($)Renewal_period	Jun. 30, 2021PropertySegment	Sep. 30, 2021	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%		50.00%
CityCenter Holdings LLC As Investee [Member] | Scenario Forecast [Member]
Organization Disclosure [Line Items]
Percentage ownership interest				100.00%
BetMGM LLC [Member]
Organization Disclosure [Line Items]
Percentage ownership interest		50.00%	50.00%		50.00%
Infinity World Development Corp [Member] | CityCenter Holdings LLC As Investee [Member]
Organization Disclosure [Line Items]
Cash consideration		$ 2,125
Percentage ownership interest		50.00%	50.00%
Entain plc [Member] | BetMGM LLC [Member]
Organization Disclosure [Line Items]
Percentage ownership interest		50.00%	50.00%
Bellagio BREIT Venture [Member]
Organization Disclosure [Line Items]
Percentage of minority interest		5.00%	5.00%
MGP BREIT Venture [Member]
Organization Disclosure [Line Items]
Partnership interest			50.10%
Percentage of minority interest		49.90%	49.90%
VICI Properties, Inc [Member] | Subsequent Event [Member]
Organization Disclosure [Line Items]
Shares newly issued | shares	1.366
Operating partnership units received | shares	1.366
Fixed exchange ratio, share price | $ / shares	$ 43
Cash consideration	$ 4,400
Ownership interest	$ 370
Lease agreement initial lease term	25 years
Number of renewal periods, exercisable at option | Renewal_period	3
Lease agreement renewal period	10 years
Annual rent	$ 860
Annual rent escalating from year one through year ten	2.00%
Annual rent escalator after year ten	2.00%
Annual rent escalator cap after year ten	3.00%
Blackstone Real Estate Income Trust [Member] | Aria and Vdara [Member]
Organization Disclosure [Line Items]
Cash consideration		$ 3,890
Lease agreement initial lease term		30 years	30 years
Number of renewal periods, exercisable at option | Renewal_period		3
Lease agreement renewal period		10 years	10 years
Annual rent		$ 215
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%
Lease rolling period		5 years
Lease succeeding period		1 year
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
Non-Guarantor MGP Subsidiaries [Member] | 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			41.60%
Percentage of minority interest		58.40%	58.40%

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total assets	$ 36,776,378		$ 36,776,378		$ 36,494,934
Investments in and advances to unconsolidated affiliates	1,484,717		$ 1,484,717		$ 1,447,043
Percentage of ownership interest			100.00%
Fair value of equity investment	124,000		$ 124,000
Other, Net [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Gain on change in measurement of equity instrument	86,000		86,000
Food and Beverage Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	11,000	$ 5,000	16,000	$ 15,000
Entertainment Retail and Other Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	20,000	$ 14,000	$ 36,000	$ 33,000
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	59,000		$ 59,000
MGM Growth Properties LLC [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total assets	10,100,000		10,100,000
Total liabilities	$ 5,000,000		$ 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	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Outstanding Chip Liability [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	$ 212,671	$ 314,570
Balance at June 30	144,975	338,390
Increase / (decrease)	(67,696)	23,820
Loyalty Program [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	139,756	126,966
Balance at June 30	136,659	131,641
Increase / (decrease)	(3,097)	4,675
Customer Advances and Other [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	382,287	481,095
Balance at June 30	513,971	306,752
Increase / (decrease)	$ 131,684	$ (174,343)

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	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 1,484,717	$ 1,447,043
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	515,472	441,893
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	813,850	810,066
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	22,057	27,310
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 133,338	$ 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)	Jun. 30, 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Equity Method Investments And Joint Ventures [Abstract]
Income (loss) from unconsolidated affiliates	$ 83,338	$ (8,353)	$ 57,759	$ 27,395
Non-operating items from unconsolidated affiliates	(23,216)	(23,761)	(44,052)	(56,382)
Net income from unconsolidated affiliates	$ 60,122	$ (32,114)	$ 13,707	$ (28,987)

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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	$ 83,338	$ (8,353)	$ 57,759	$ 27,395
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	90,212	(39,113)	87,380	(18,447)
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	38,954	38,861	77,917	58,811
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	(45,979)	(5,241)	(105,215)	(15,918)
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	$ 151	$ (2,860)	$ (2,323)	$ 2,949

Investments in and Advances t_7

Investments in and Advances to Unconsolidated Affiliates - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2021	Apr. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates					$ 803	$ 63,251
City Center Holdings L L C [Member]
Schedule Of Equity Method Investments [Line Items]
Distribution paid/declared		$ 101,000
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates			$ 32,000	$ 23,000	$ 47,000	35,000
Percentage ownership interest	50.10%		50.10%		50.10%			50.10%
BetMGM [Member]
Schedule Of Equity Method Investments [Line Items]
Contributions to unconsolidated affiliates			$ 25,000	$ 10,000	$ 100,000	$ 30,000
Percentage ownership interest	50.00%		50.00%		50.00%			50.00%
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates		$ 51,000
Percentage ownership interest	50.00%		50.00%		50.00%			50.00%
Distributions from unconsolidated affiliates, percentage		50.00%
CityCenter Holdings LLC As Investee [Member] | Scenario Forecast [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest							100.00%
CityCenter Holdings LLC As Investee [Member] | Infinity World Development Corp [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage ownership interest	50.00%		50.00%		50.00%
Harmon Land [Member] | City Center Holdings L L C [Member]
Schedule Of Equity Method Investments [Line Items]
Consideration received from sale of discontinued operations	$ 80,000		$ 80,000		$ 80,000
Recognized gain on sale, unconsolidated affiliates and reversal of basis differences	30,000
Harmon Land [Member] | CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates	$ 15,000
Distributions from unconsolidated affiliates, percentage	50.00%
Consideration received from sale of discontinued operations	$ 50,000		$ 50,000		$ 50,000
Recognized gain on sale, unconsolidated affiliates and reversal of basis differences	$ 35,000

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, Gross	$ 12,677,219	$ 12,480,586
Less: Premiums, discounts, and unamortized debt issuance costs, net	(102,280)	(103,902)
Long-term debt	12,574,939	12,376,684
Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	0	10,000
MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	226,667	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	6 Months Ended	12 Months Ended
	Mar. 31, 2021	Jun. 30, 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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
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%
Long-term debt, maturity year		2036	2036

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) - USD ($)	1 Months Ended	6 Months Ended
	Mar. 31, 2021	Jun. 30, 2021	Feb. 28, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Credit facility amount		$ 12,677,219,000		$ 12,480,586,000
Fair value of interest rate swaps designated as cash flow hedges recorded as liability				41,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as current liability				1,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as long-term liability		33,000,000		40,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as liability		38,000,000		78,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as current liability		11,000,000		31,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as long-term liability		27,000,000		47,000,000
Long-term debt, fair value		$ 13,400,000,000		$ 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
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
Operating Partnership Senior Credit Facility [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]
Debt Instrument [Line Items]
Notional amount		$ 700,000,000
Weighted Average fixed interest rate		1.783%
Revolving Credit Facility [Member] | Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn		$ 0
Credit facility amount		1,350,000,000
Unsecured Revolving Credit Facility [Member | MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility		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
Line of credit facility drawn		0
Line of credit facility, current borrowing capacity		400,000,000
Term Loan [Member] | MGM China First Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn		$ 227,000,000
Debt instrument, weighted average interest rate		2.84%
Senior Credit Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility		$ 1,500,000,000
Line of credit facility drawn		$ 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		6 Months Ended			9 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 26, 2022	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Effective income tax rate	27.80%	(22.40%)		(19.60%)	(2.90%)
Cash tax payments				$ 0
Marina District Development Company, LLC [Member]
Income Tax Disclosure [Line Items]
Unrecognized tax benefits reversed	$ 20,000,000			$ 30,000,000
MGM Grand Paradise SA [Member]
Income Tax Disclosure [Line Items]
Complementary tax rate on distributions of gaming profits (as a percent)				12.00%
Annual fee payments						$ 1,400,000
Accrued amount	0			$ 0
MGM Grand Paradise SA [Member] | Scenario Forecast [Member]
Income Tax Disclosure [Line Items]
Annual fee payments			$ 900,000				$ 1,900,000
Macau [Member]
Income Tax Disclosure [Line Items]
Decrease in foreign tax credit carry forward valuation allowance	$ 2,000,000			$ 5,000,000
Special gaming tax rate				35.00%

Leases - Additional Information

Leases - Additional Information (Detail) $ in Millions	Mar. 01, 2021USD ($)	Dec. 01, 2020USD ($)	Jun. 30, 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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost, primarily classified within "General and administrative"	$ 198,963	$ 200,105	$ 397,954	$ 352,641
Interest expense	(396)	(12,854)	(1,052)	(13,806)
Amortization expense	17,672	17,238	35,486	34,644
Total finance lease costs	$ 17,276	$ 4,384	$ 34,434	$ 20,838

Leases - Schedule of Componen_2

Leases - Schedule of Components of Lease Costs (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Line Items]
Operating lease cost	$ 198,963	$ 200,105	$ 397,954	$ 352,641
Bellagio BREIT Venture [Member]
Leases [Line Items]
Operating lease cost	83,000	83,000	166,000	166,000
Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Operating lease cost	$ 99,000	$ 99,000	$ 197,000	$ 150,000

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Operating leases
Operating lease right-of-use assets, net	$ 8,208,972	$ 8,286,694
Operating lease liabilities - current, classified within "Other accrued liabilities"	$ 31,402	$ 31,843
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Operating lease liabilities - long-term	$ 8,403,862	$ 8,390,117
Total operating lease liabilities	8,435,264	8,421,960
Finance leases
Finance lease right-of-use assets, net classified within "Property and equipment, net"	$ 165,487	$ 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"	$ 76,681	$ 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"	$ 98,970	$ 134,287
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term obligations	Other long-term obligations
Total finance lease liabilities	$ 175,651	$ 214,480
Weighted-average remaining lease term (years)
Operating leases	29 years	30 years
Finance leases	2 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	Jun. 30, 2021	Dec. 31, 2020
Leases [Line Items]
Operating lease right-of-use assets, net	$ 8,208,972	$ 8,286,694
Operating lease liabilities - long-term	8,403,862	8,390,117
Bellagio BREIT Venture [Member]
Leases [Line Items]
Operating lease right-of-use assets, net	3,600,000	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	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating cash outflows from operating leases	$ 309,321	$ 273,162
Operating cash outflows from finance leases	2,576	865
Financing cash outflows from finance leases	35,194	9,459
ROU assets obtained in exchange for new lease liabilities
Operating leases	1,651	4,121,810
Finance leases	$ 0	$ 167,089

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021 (excluding the six months ended June 30, 2021)	$ 305,183
Operating Leases, 2022	619,521
Operating Leases, 2023	628,027
Operating Leases, 2024	638,031
Operating Leases, 2025	647,148
Operating Leases, Thereafter	19,802,317
Operating Leases, Total future minimum lease payments	22,640,227
Operating Leases, Less: Amount of lease payments representing interest	(14,204,963)
Total operating lease liabilities	8,435,264	$ 8,421,960
Less: Current portion	(31,402)	(31,843)
Operating lease liabilities	8,403,862	8,390,117
2021 (excluding the six months ended June 30, 2021)	43,448
Finance Leases, 2022	72,523
Finance Leases, 2023	63,716
Finance Leases, 2024	1,032
Finance Leases, 2025	516
Finance Leases, Thereafter	0
Finance Leases, Total future minimum lease payments	181,235
Finance Leases, Less: Amount of lease payments representing interest	(5,584)
Total finance lease liabilities	175,651	214,480
Less: Current portion	(76,681)	(80,193)
Long-term portion of lease liabilities	$ 98,970	$ 134,287

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021USD ($)
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	31,000,000
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	$ 103,000,000
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 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. The amount of the bank guarantee was approximately $103 million as of June 30, 2021 when giving effect to foreign currency exchange rate fluctuation.

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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss) attributable to MGM Resorts International	$ 104,753	$ (857,257)	$ (227,076)	$ (50,388)
Adjustment related to redeemable noncontrolling interests	(37,011)	32,182	(46,439)	40,251
Net income (loss) available to common stockholders – basic	67,742	(825,075)	(273,515)	(10,137)
Other	0	(20)	0	0
Net income (loss) attributable to common stockholders - diluted	$ 67,742	$ (825,095)	$ (273,515)	$ (10,137)
Denominator:
Weighted-average common shares outstanding – basic	489,459	493,456	491,785	494,434
Potential dilution from share-based awards	5,843	0	0	0
Weighted-average common and common equivalent shares – diluted	495,302	493,456	491,785	494,434
Antidilutive share-based awards excluded from the calculation of diluted earnings per share	1	5,370	8,040	4,623

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	Aug. 04, 2021	Aug. 03, 2021	Mar. 15, 2021	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Feb. 29, 2020	May 31, 2018
Stockholders Equity Note [Line Items]
Cash proceeds for redemption						$ 3,205,000	$ 50,828,000	$ 3,205,000
Common stock repurchases, value					$ 220,392,000		339,661,000	353,720,000
Common Stock [Member]
Stockholders Equity Note [Line Items]
Cash proceeds for redemption						$ 0	$ 0	$ 0
Common stock repurchases, Shares					5,582		8,732	10,861
Common stock repurchases, value					$ 56,000		$ 87,000	$ 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					$ 2,700,000,000		$ 2,700,000,000
Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchases, Shares					6,000	0	9,000	11,000
Stock repurchased, average price per share					$ 39.48		$ 38.90	$ 32.57
Common stock repurchases, value					$ 220,000,000		$ 340,000,000	$ 354,000,000
Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Dividend declared date	Aug. 4, 2021
Dividends declared per share	$ 0.0025
Dividend paid date	Sep. 15, 2021
Dividend record date	Sep. 10, 2021
Subsequent Event [Member] | Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchases, Shares		7,000
Stock repurchased, average price per share		$ 38.72
Common stock repurchases, value		$ 275,000,000
MGM Growth Properties LLC [Member] | Operating Partnership [Member]
Stockholders Equity Note [Line Items]
Partnership interest			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		3,000
Issuance of operating partnership units					3,000
MGM Growth Properties LLC [Member] | Class A shares [Member] | Operating Partnership [Member] | Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Partnership interest		41.60%

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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 11,232,519	$ 13,332,001	$ 11,179,908	$ 12,662,919
Other comprehensive income (loss)	7,901	(6,825)	10,177	(61,575)
Other changes in accumulated other comprehensive income (loss):
Ending Balance	11,104,122	$ 12,348,782	11,104,122	12,348,782
MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuances	111,510		759,264	$ 507,551
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	5,611		12,964
Other comprehensive income (loss) before reclassifications	5,811		(7,211)
Amounts reclassified from accumulated other comprehensive loss to interest expense	0		0
Other comprehensive income (loss)	5,811		(7,211)
Other changes in accumulated other comprehensive income (loss):
Other	0		0
Redemption of Operating Partnership units			0
Changes in accumulated other comprehensive income (loss):	5,811		(7,211)
Other comprehensive loss (income) attributable to noncontrolling interest	(2,578)		3,091
Ending Balance	8,844		8,844
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 issuances	0		0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(48,258)		(55,357)
Other comprehensive income (loss) before reclassifications	(4,674)		6,006
Amounts reclassified from accumulated other comprehensive loss to interest expense	6,764		11,382
Other comprehensive income (loss)	2,090		17,388
Other changes in accumulated other comprehensive income (loss):
Other	0		0
Redemption of Operating Partnership units			0
Changes in accumulated other comprehensive income (loss):	2,090		17,388
Other comprehensive loss (income) attributable to noncontrolling interest	(1,658)		(9,857)
Ending Balance	(47,826)		(47,826)
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 issuances	0		0
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	17,429		11,716
Other comprehensive income (loss) before reclassifications	0		0
Amounts reclassified from accumulated other comprehensive loss to interest expense	0		0
Other comprehensive income (loss)	0		0
Other changes in accumulated other comprehensive income (loss):
Other	9		(2,473)
Redemption of Operating Partnership units			5,327
Changes in accumulated other comprehensive income (loss):	380		6,093
Other comprehensive loss (income) attributable to noncontrolling interest	0		0
Ending Balance	17,809		17,809
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 issuances	371		3,239
AOCI Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(25,218)		(30,677)
Other comprehensive income (loss) before reclassifications	1,137		(1,205)
Amounts reclassified from accumulated other comprehensive loss to interest expense	6,764		11,382
Other comprehensive income (loss)	7,901		10,177
Other changes in accumulated other comprehensive income (loss):
Other	9		(2,473)
Redemption of Operating Partnership units			5,327
Changes in accumulated other comprehensive income (loss):	8,281		16,270
Other comprehensive loss (income) attributable to noncontrolling interest	(4,236)		(6,766)
Ending Balance	(21,173)		(21,173)
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 issuances	$ 371		$ 3,239

Segment Information - Schedule

Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenues	$ 2,267,962	$ 289,809	$ 3,915,709	$ 2,542,626
Other operating income (expense)
Preopening and start-up expenses	(90)	82	(95)	(40)
Property transactions, net	28,906	(26,349)	2,835	(81,324)
Gain on REIT transactions, net	0	0	0	1,491,945
Depreciation and amortization	(283,625)	(299,206)	(574,176)	(617,496)
October 1 litigation settlement	0	(49,000)	0	(49,000)
Restructuring	0	(19,882)	0	(19,882)
Triple-net operating lease and ground lease rent expense	(189,609)	(189,567)	(379,229)	(331,485)
Gain related to sale of Harmon land - unconsolidated affiliate	49,755	0	49,755	0
Income from unconsolidated affiliates related to real estate ventures	41,666	41,555	83,338	65,069
Operating income (loss)	263,760	(1,034,529)	17,070	216,316
Non-operating income (expense)
Interest expense, net of amounts capitalized	(202,772)	(156,756)	(398,067)	(313,893)
Non-operating items from unconsolidated affiliates	(23,216)	(23,761)	(44,052)	(56,382)
Other, net	87,358	8,321	119,543	(115,943)
Total non-operating income (expense)	(138,630)	(172,196)	(322,576)	(486,218)
Income (loss) before income taxes	125,130	(1,206,725)	(305,506)	(269,902)
Benefit (provision) for income taxes	(34,826)	270,238	59,872	7,934
Net income (loss)	90,304	(936,487)	(245,634)	(261,968)
Less: Net loss attributable to noncontrolling interests	14,449	79,230	18,558	211,580
Net income (loss) attributable to MGM Resorts International	104,753	(857,257)	(227,076)	(50,388)
Chief Executive Officer [Member]
Other operating income (expense)
CEO transition expense	0	0	0	(44,401)
Reportable segments [Member]
Revenues
Revenues	2,171,481	273,273	3,724,150	2,404,626
Adjusted Property EBITDAR	723,734	(332,820)	1,078,610	64,509
Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	1,004,568	150,811	1,549,532	1,284,617
Adjusted Property EBITDAR	396,805	(104,447)	504,924	163,152
Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	856,282	89,264	1,567,633	814,924
Adjusted Property EBITDAR	318,348	(112,085)	560,330	39,635
Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	310,631	33,198	606,985	305,085
Adjusted Property EBITDAR	8,581	(116,288)	13,356	(138,278)
Corporate and other [Member]
Revenues
Revenues	96,481	16,536	191,559	138,000
Other operating income (expense)
Corporate and other, net	(106,977)	(159,342)	(243,968)	(261,579)
Casino [Member]
Revenues
Revenues	1,336,124	163,649	2,434,757	1,217,675
Casino [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	353,473	63,028	585,567	337,701
Casino [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	707,864	77,177	1,304,519	613,807
Casino [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	270,935	23,284	532,539	263,698
Rooms [Member]
Revenues
Revenues	365,028	31,623	563,447	465,574
Rooms [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	298,714	26,105	443,043	388,969
Rooms [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	48,924	4,181	89,503	60,060
Rooms [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	17,389	1,335	30,902	16,544
Food and Beverage [Member]
Revenues
Revenues	302,666	29,771	460,078	426,480
Food and Beverage [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	215,631	21,026	306,050	309,789
Food and Beverage [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	69,149	4,314	119,513	99,406
Food and Beverage [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	17,886	4,431	34,515	17,211
Entertainment, Retail and Other [Member]
Revenues
Revenues	189,011	48,569	324,233	318,514
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	136,750	40,652	214,872	248,158
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	30,345	3,592	54,098	41,651
Entertainment, Retail and Other [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	$ 4,421	$ 4,148	$ 9,029	$ 7,632

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	Aug. 04, 2021	Apr. 01, 2021	May 31, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Mar. 15, 2021
Related Party Transaction [Line Items]
Cash proceeds for redemption					$ 3,205	$ 50,828	$ 3,205
VICI Properties, Inc [Member] | Subsequent Event [Member]
Related Party Transaction [Line Items]
Annual rent payments under master lease of properties	$ 860,000
Fixed exchange ratio, share price	$ 43
Cash consideration	$ 4,400,000
Ownership interest	$ 370,000
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%
MGP [Member] | Blackstone Real Estate Income Trust [Member] | Lease Agreements [Member]
Related Party Transaction [Line Items]
Ownership interest						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%
Master Lease [Member]
Related Party Transaction [Line Items]
Annual rent payments under master lease of properties		$ 843,000	$ 30,000					$ 828,000
Fixed annual rent escalator percentage		2.00%
Cash consideration			400,000
Fixed annual rent			$ 27,000
Increase in annual rent per year, percentage			2.00%