MGM Resorts International (MGM) 10-Q 3 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Oct. 30, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
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		493,939,099
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	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 4,593,872	$ 2,329,604
Accounts receivable, net	328,413	612,717
Inventories	97,316	102,888
Income tax receivable	170,377	27,167
October 1 litigation insurance receivable	751,000	735,000
Prepaid expenses and other	245,303	200,317
Total current assets	6,186,281	4,007,693
Property and equipment, net	14,792,378	18,285,955
Other assets
Investments in and advances to unconsolidated affiliates	1,473,955	822,366
Goodwill	2,091,769	2,084,564
Other intangible assets, net	3,697,549	3,826,504
Operating lease right-of-use assets, net	8,330,530	4,392,481
Other long-term assets, net	432,313	456,793
Total other assets	16,026,116	11,582,708
Total assets	37,004,775	33,876,356
Current liabilities
Accounts payable	150,445	235,437
Construction payable	28,827	74,734
Accrued interest on long-term debt	150,729	122,250
October 1 litigation liability	800,000	735,000
Other accrued liabilities	1,636,783	2,024,002
Total current liabilities	2,766,784	3,191,423
Deferred income taxes, net	2,164,231	2,106,506
Long-term debt, net	11,414,730	11,168,904
Operating lease liabilities	8,380,341	4,277,970
Other long-term obligations	518,057	363,588
Commitments and contingencies (Note 7)
Redeemable noncontrolling interests	57,970	105,046
Stockholders' equity
Common stock, $.01 par value: authorized 1,000,000,000 shares, issued and outstanding 493,306,751 and 503,147,632 shares	4,933	5,031
Capital in excess of par value	3,355,693	3,531,099
Retained earnings	3,539,848	4,201,337
Accumulated other comprehensive loss	(39,370)	(10,202)
Total MGM Resorts International stockholders' equity	6,861,104	7,727,265
Noncontrolling interests	4,841,558	4,935,654
Total stockholders' equity	11,702,662	12,662,919
Total liabilities and stockholders' equity	$ 37,004,775	$ 33,876,356

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
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	493,306,751	503,147,632
Common stock, outstanding shares	493,306,751	503,147,632

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Revenues	$ 1,125,920	$ 3,314,382	$ 3,668,546	$ 9,714,536
Expenses
General and administrative	543,293	494,228	1,591,163	1,543,764
Corporate expense	70,437	108,545	356,823	346,042
Preopening and start-up expenses	11	925	51	5,091
Property transactions, net	4,116	249,858	85,440	264,424
Gain on REIT transactions, net	0	0	(1,491,945)	0
Depreciation and amortization	294,363	322,009	911,859	973,211
Total expenses	1,641,737	3,112,215	3,995,442	8,836,377
Income from unconsolidated affiliates	20,635	36,214	48,030	101,967
Operating income (loss)	(495,182)	238,381	(278,866)	980,126
Non-operating income (expense)
Interest expense, net of amounts capitalized	(173,808)	(215,503)	(487,701)	(647,452)
Non-operating items from unconsolidated affiliates	(23,604)	(14,669)	(79,986)	(54,311)
Other, net	13,889	(9,381)	(102,054)	(53,964)
Total non-operating income (expense)	(183,523)	(239,553)	(669,741)	(755,727)
Income (loss) before income taxes	(678,705)	(1,172)	(948,607)	224,399
Benefit (provision) for income taxes	76,734	7,276	84,668	(75,969)
Net income (loss)	(601,971)	6,104	(863,939)	148,430
Less: Net (income) loss attributable to noncontrolling interests	67,240	(43,237)	278,820	(110,861)
Net income (loss) attributable to MGM Resorts International	$ (534,731)	$ (37,133)	$ (585,119)	$ 37,569
Net income (loss) per share of common stock attributable to MGM Resorts International
Basic	$ (1.08)	$ (0.08)	$ (1.10)	$ 0.06
Diluted	$ (1.08)	$ (0.08)	$ (1.10)	$ 0.06
Weighted average common shares outstanding
Basic	493,517	518,983	494,126	528,429
Diluted	493,517	518,983	494,126	531,873
Casino [Member]
Revenues
Revenues	$ 690,218	$ 1,663,049	$ 1,907,893	$ 4,887,707
Expenses
Expenses	368,310	915,207	1,197,373	2,706,356
Rooms [Member]
Revenues
Revenues	175,450	595,636	641,024	1,756,354
Expenses
Expenses	107,361	211,292	321,221	623,929
Food and Beverage [Member]
Revenues
Revenues	126,317	560,200	552,797	1,624,973
Expenses
Expenses	133,937	427,400	533,879	1,254,303
Entertainment, Retail and Other [Member]
Revenues
Revenues	101,618	387,596	420,132	1,114,708
Expenses
Expenses	87,592	274,850	342,878	788,463
Reimbursed Costs [Member]
Revenues
Revenues	32,317	107,901	146,700	330,794
Expenses
Expenses	$ 32,317	$ 107,901	$ 146,700	$ 330,794

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (601,971)	$ 6,104	$ (863,939)	$ 148,430
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	538	(18,602)	29,163	(4,627)
Unrealized loss on cash flow hedges	(448)	(16,504)	(90,648)	(56,125)
Other comprehensive income (loss)	90	(35,106)	(61,485)	(60,752)
Comprehensive income (loss)	(601,881)	(29,002)	(925,424)	87,678
Less: Comprehensive (income) loss attributable to noncontrolling interests	66,810	(28,911)	306,236	(88,298)
Comprehensive loss attributable to MGM Resorts International	$ (535,071)	$ (57,913)	$ (619,188)	$ (620)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income (loss)	$ (863,939)	$ 148,430
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	911,859	973,211
Amortization of debt discounts, premiums and issuance costs	24,918	29,539
Loss on early retirement of debt	126,462	55,932
Provision for doubtful accounts	76,228	30,456
Stock-based compensation	77,681	64,518
Property transactions, net	85,440	264,424
Gain on REIT transactions, net	(1,491,945)	0
Noncash lease expense	139,914	47,753
Loss (income) from unconsolidated affiliates	31,956	(47,656)
Distributions from unconsolidated affiliates	62,399	0
Deferred income taxes	49,633	52,785
Change in operating assets and liabilities:
Accounts receivable	192,393	(655,786)
Inventories	5,692	7,734
Income taxes receivable and payable, net	(143,213)	4,555
Prepaid expenses and other	(44,895)	(23,105)
Accounts payable and accrued liabilities	(450,378)	436,494
Other	(39,810)	(33,176)
Net cash provided by (used in) operating activities	(1,249,605)	1,356,108
Cash flows from investing activities
Capital expenditures, net of construction payable	(177,571)	(482,786)
Dispositions of property and equipment	433	1,936
Proceeds from Mandalay Bay and MGM Grand Las Vegas transaction	2,455,839	0
Investments in unconsolidated affiliates	(71,110)	(81,271)
Distributions from unconsolidated affiliates	63,578	99,661
Other	385	(31,112)
Net cash provided by (used in) investing activities	2,271,554	(1,029,253)
Cash flows from financing activities
Net repayments under bank credit facilities – maturities of 90 days or less	(1,071,180)	(1,711,007)
Issuance of long-term debt	2,050,000	3,250,000
Retirement of senior notes	(846,815)	(1,759,978)
Debt issuance costs	(42,030)	(63,391)
Proceeds from issuance of bridge loan facility	1,304,625	0
Issuance of MGM Growth Properties Class A shares, net	524,704	699,362
Dividends paid to common shareholders	(76,370)	(205,163)
Distributions to noncontrolling interest owners	(219,775)	(172,239)
Purchases of common stock	(353,720)	(638,815)
Other	(29,601)	(18,655)
Net cash provided by (used in) financing activities	1,239,838	(619,886)
Effect of exchange rate on cash	2,481	(162)
Cash and cash equivalents
Net increase (decrease) for the period	2,264,268	(293,193)
Balance, beginning of period	2,329,604	1,526,762
Balance, end of period	4,593,872	1,233,569
Supplemental cash flow disclosures
Interest paid, net of amounts capitalized	428,520	597,785
Federal, state and foreign income taxes paid, net of refunds	8,595	18,222
Non-cash investing and financing activities
Investment in MGP BREIT Venture	802,000	0
MGP BREIT Venture assumption of bridge loan facility	1,304,625	0
Empire City [Member]
Cash flows from investing activities
Acquisition, net of cash acquired	$ 0	$ (535,681)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	MGP BREIT Venture [Member]	Empire City [Member]	MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Empire City Transaction [Member]	Northfield [Member]	Park MGM [Member]	Common Stock [Member]	Common Stock [Member]MGP BREIT Venture [Member]	Common Stock [Member]Empire City [Member]	Common Stock [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Common Stock [Member]Empire City Transaction [Member]	Common Stock [Member]Northfield [Member]	Common Stock [Member]Park MGM [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]Empire City [Member]	Capital in Excess of Par Value [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Capital in Excess of Par Value [Member]Empire City Transaction [Member]	Capital in Excess of Par Value [Member]Northfield [Member]	Capital in Excess of Par Value [Member]Park MGM [Member]	Retained Earnings [Member]	Retained Earnings [Member]MGP BREIT Venture [Member]	Retained Earnings [Member]Empire City [Member]	Retained Earnings [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Retained Earnings [Member]Empire City Transaction [Member]	Retained Earnings [Member]Northfield [Member]	Retained Earnings [Member]Park MGM [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member]MGP BREIT Venture [Member]	Accumulated Other Comprehensive Loss [Member]Empire City [Member]	Accumulated Other Comprehensive Loss [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Accumulated Other Comprehensive Loss [Member]Empire City Transaction [Member]	Accumulated Other Comprehensive Loss [Member]Northfield [Member]	Accumulated Other Comprehensive Loss [Member]Park MGM [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]Empire City [Member]	Total MGM Resorts International Stockholder's Equity [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Total MGM Resorts International Stockholder's Equity [Member]Empire City Transaction [Member]	Total MGM Resorts International Stockholder's Equity [Member]Northfield [Member]	Total MGM Resorts International Stockholder's Equity [Member]Park MGM [Member]	Non-Controlling Interests [Member]	Non-Controlling Interests [Member]MGP BREIT Venture [Member]	Non-Controlling Interests [Member]Empire City [Member]	Non-Controlling Interests [Member]MGM Growth Properties LLC [Member]Class A Shareholders [Member]	Non-Controlling Interests [Member]Empire City Transaction [Member]	Non-Controlling Interests [Member]Northfield [Member]	Non-Controlling Interests [Member]Park MGM [Member]
Beginning Balance at Dec. 31, 2018	$ 10,469,791							$ 5,275							$ 4,092,085							$ 2,423,479							$ (8,556)							$ 6,512,283							$ 3,957,508
Beginning Balance, Shares at Dec. 31, 2018								527,480
Net income (loss)	141,600							$ 0							0							37,569							0							37,569							104,031
Currency translation adjustment	(4,627)							0							0							0							(2,661)							(2,661)							(1,966)
Cash flow hedges	(56,125)							0							0							0							(35,528)							(35,528)							(20,597)
Stock-based compensation	64,520							0							60,832							0							0							60,832							3,688
Issuance of common stock pursuant to stock-based compensation awards	(7,395)							$ 6							(7,401)							0							0							(7,395)							0
Issuance of common stock pursuant to stock-based compensation awards, Shares								667
Cash distributions and dividend payable to noncontrolling interest owners	(130,752)			$ (44,870)				$ 0			$ 0				0			$ 0				0			$ 0				0			$ 0				0			$ 0				(130,752)			$ (44,870)
Dividends declared or paid to common shareholders	(205,163)							0							0							(205,163)							0							(205,163)							0
Issuance of restricted stock units	1,546							0							1,546							0							0							1,546							0
Repurchases of common stock	(638,815)							$ (236)							(638,579)							0							0							(638,815)							0
Repurchases of common stock, Shares								(23,604)
Adjustment of redeemable noncontrolling interest to redemption value	(5,907)							$ 0							(5,907)							0							0							(5,907)							0
Acquisition			$ 265,765							$ 94							$ 265,671							$ 0							$ 0							$ 265,765							$ 0
Acquisition, shares										9,371
Transaction					$ 5,027	$ (5,760)	$ 528					$ 0	$ 0	$ 0					$ (18,913)	$ 21,681	$ (1,984)					$ 0	$ 0	$ 0					$ 195	$ (2)	$ 16					$ (18,718)	$ 21,679	$ (1,968)					$ 23,745	$ (27,439)	$ 2,496
Share issuances				673,779							0							79,500							0							(469)							79,031							594,748
Other	(2,524)							0							(2,162)							0							164							(1,998)							(526)
Ending Balance at Sep. 30, 2019	10,520,618							$ 5,139							3,846,369							2,255,885							(46,841)							6,060,552							4,460,066
Ending Balance, Shares at Sep. 30, 2019								513,914
Beginning Balance at Jun. 30, 2019	10,954,721							$ 5,263							4,181,585							2,359,966							(26,330)							6,520,484							4,434,237
Beginning Balance, Shares at Jun. 30, 2019								526,333
Net income (loss)	3,787							$ 0							0							(37,133)							0							(37,133)							40,920
Currency translation adjustment	(18,602)							0							0							0							(10,509)							(10,509)							(8,093)
Cash flow hedges	(16,504)							0							0							0							(10,271)							(10,271)							(6,233)
Stock-based compensation	15,320							0							13,891							0							0							13,891							1,429
Issuance of common stock pursuant to stock-based compensation awards	(1,980)							$ 2							(1,982)							0							0							(1,980)							0
Issuance of common stock pursuant to stock-based compensation awards, Shares								180
Cash distributions and dividend payable to noncontrolling interest owners	(26,529)			(44,870)				$ 0			0				0			0				0			0				0			0				0			0				(26,529)			(44,870)
Dividends declared or paid to common shareholders	(66,948)							0							0							(66,948)							0							(66,948)							0
Repurchases of common stock	(356,982)							$ (126)							(356,856)							0							0							(356,982)							0
Repurchases of common stock, Shares								(12,599)
Adjustment of redeemable noncontrolling interest to redemption value	(3,074)							$ 0							(3,074)							0							0							(3,074)							0
Share issuances				82,737							0							12,399							0							200							12,599							70,138
Other	(458)							0							406							0							69							475							(933)
Ending Balance at Sep. 30, 2019	10,520,618							$ 5,139							3,846,369							2,255,885							(46,841)							6,060,552							4,460,066
Ending Balance, Shares at Sep. 30, 2019								513,914
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)	(868,093)							$ 0							0							(585,119)							0							(585,119)							(282,974)
Currency translation adjustment	29,163							0							0							0							16,353							16,353							12,810
Cash flow hedges	(90,648)							0							0							0							(50,422)							(50,422)							(40,226)
Stock-based compensation	77,681							0							73,062							0							0							73,062							4,619
Issuance of common stock pursuant to stock-based compensation awards	(7,129)							$ 11							(7,140)							0							0							(7,129)							0
Issuance of common stock pursuant to stock-based compensation awards, Shares								1,020
Cash distributions and dividend payable to noncontrolling interest owners	(155,081)			(64,085)				$ 0			0				0			0				0			0				0			0				0			0				(155,081)			(64,085)
Dividends declared or paid to common shareholders	(76,370)							0							0							(76,370)							0							(76,370)							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	42,029							$ 0							42,029							0							0							42,029							0
Transaction		$ 1,725							$ 0							$ (6,503)							$ 0							$ (59)							$ (6,562)							$ 8,287
Share issuances				507,551							0							64,188							0							646							64,834							442,717
Redemption of Operating Partnership units	(3,205)							0							12,055							0							4,772							16,827							(20,032)
Other	(2,217)							0							(1,628)							0							(458)							(2,086)							(131)
Ending Balance at Sep. 30, 2020	11,702,662							$ 4,933							3,355,693							3,539,848							(39,370)							6,861,104							4,841,558
Ending Balance, Shares at Sep. 30, 2020								493,307
Beginning Balance at Jun. 30, 2020	12,348,782							$ 4,933							3,333,074							4,075,812							(39,030)							7,374,789							4,973,993
Beginning Balance, Shares at Jun. 30, 2020								493,281
Net income (loss)	(604,154)							$ 0							0							(534,731)							0							(534,731)							(69,423)
Currency translation adjustment	538							0							0							0							424							424							114
Cash flow hedges	(448)							0							0							0							(764)							(764)							316
Stock-based compensation	21,948							0							19,739							0							0							19,739							2,209
Issuance of common stock pursuant to stock-based compensation awards	(129)							$ 0							(129)							0							0							(129)							0
Issuance of common stock pursuant to stock-based compensation awards, Shares								26
Cash distributions and dividend payable to noncontrolling interest owners	(1,044)			$ (64,085)				$ 0			$ 0				0			$ 0				0			$ 0				0			$ 0				0			$ 0				(1,044)			$ (64,085)
Dividends declared or paid to common shareholders	(1,233)							0							0							(1,233)							0							(1,233)							0
Adjustment of redeemable noncontrolling interest to redemption value	3,009							0							3,009							0							0							3,009							0
Other	(522)							0							0							0							0							0							(522)
Ending Balance at Sep. 30, 2020	$ 11,702,662							$ 4,933							$ 3,355,693							$ 3,539,848							$ (39,370)							$ 6,861,104							$ 4,841,558
Ending Balance, Shares at Sep. 30, 2020								493,307

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Stockholders Equity [Abstract]
Dividends declared or paid to common shareholders	$ 0.0025	$ 0.13	$ 0.155	$ 0.39

Organization

Organization	9 Months Ended
	Sep. 30, 2020
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 September 30, 2020, 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, Primm Valley Golf Club at the California/Nevada state line 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 value of a Class A share, except as otherwise agreed to in connection with the waiver agreement discussed below. As of September 30, 2020, the Company owned 56.7% of the Operating Partnership units, and MGP held the remaining 43.3% 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”), the Company leases the real estate assets of Bellagio from such venture (the “Bellagio BREIT Venture”) . Additionally, pursuant to a lease agreement between a subsidiary of the Company and a venture that is 50.1% owned by the Operating Partnership and 49.9% by a subsidiary of BREIT, the Company leases the real estate assets of Mandalay Bay and MGM Grand Las Vegas from such venture (the “MGP BREIT Venture”). Refer to Note 6 for further discussion of the leases. On February 14, 2020, the Company completed a series of transactions (collectively the “MGP BREIT Venture Transaction”) pursuant to which the real estate assets of MGM Grand Las Vegas and Mandalay Bay (including Mandalay Place) were contributed to the newly formed MGP BREIT Venture. In exchange for the contribution of the real estate assets, the Company received total consideration of $4.6 billion, which was comprised of $2.5 billion of cash, $1.3 billion of the Operating Partnership’s secured indebtedness assumed by MGP BREIT Venture, and the Operating Partnership’s 50.1% equity interest in the MGP BREIT Venture. In addition, the Operating Partnership issued approximately 3 million Operating Partnership units to the Company representing 5% of the equity value of MGP BREIT Venture. The Company recorded the difference between consideration received of $2.5 billion and the carrying value of the MGM Grand Las Vegas real estate assets of $733 million and selling costs of $27 million as a net gain on sale of assets of $1.7 billion, which is reflected within Gain on REIT transactions, net in the consolidated statements of operations . In connection with the MGP BREIT Venture Transaction, MGP BREIT Venture entered into a lease with a subsidiary of the Company for the real estate assets of Mandalay Bay and MGM Grand Las Vegas as further discussed in Note 6. Additionally, the existing master lease with MGP was modified to remove the Mandalay Bay property and the annual rent under the MGP master lease was reduced by $133 million, as further discussed in Note 11 Also, on January 14, 2020, the Company, the Operating Partnership, and MGP entered into an agreement for the Operating Partnership to waive its right following the closing of the MGP BREIT Venture Transaction to issue MGP Class A shares, in lieu of cash, to the Company in connection with the Company exercising its right to require the Operating Partnership to redeem Operating Partnership units that the Company holds, at a price per unit equal to a 3% discount to the ten day average closing price prior to the date of the notice of redemption. The waiver was effective upon closing of the transaction on February 14, 2020 and terminates on the earlier of February 14, 2022 or the Company receiving cash proceeds of $1.4 billion as consideration for the redemption of the Company’s Operating Partnership units. On May 18, 2020 the Operating Partnership redeemed approximately 30 million of the Operating Partnership units held by the Company for $700 million pursuant to the waiver agreement. The Company has an approximate 56% controlling interest in MGM China Holdings Limited (together with its subsidiaries, “MGM China”), which owns MGM Grand Paradise, S.A. (“MGM Grand Paradise”). MGM Grand Paradise owns and operates the MGM Macau and MGM Cotai, two integrated casino, hotel and entertainment resorts in Macau, as well as the related gaming subconcession and land concessions. The Company owns 50% of and manages CityCenter Holdings, LLC (“CityCenter”), located between Bellagio and Park MGM. The other 50% of CityCenter is owned by Infinity World Development Corp, a wholly owned subsidiary of Dubai World, a Dubai, United Arab Emirates government decree entity. CityCenter consists of Aria, an integrated casino, hotel and entertainment resort; and Vdara, a luxury condominium-hotel. See Note 3 for additional information related to CityCenter. The Company 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 coronavirus disease 2019 (“COVID-19”) and developments surrounding the global pandemic have had, and we expect will continue to have, a significant impact on the Company’s business, financial condition and results of operations. In March 2020, all of the Company’s domestic properties temporarily closed pursuant to state and local government requirements as a result of COVID-19. Throughout the second and third quarter of 2020, all of the Company’s properties re-opened to the public but are operating without certain amenities and subject to certain occupancy limitations. Accordingly, although the Company’s properties have re-opened, they are generating revenues that are significantly lower than historical results. In addition, the Company’s properties may be subject to temporary, complete, or partial shutdowns in the future due to COVID-19 related concerns. The Company has also implemented certain measures to mitigate the spread of COVID-19, including limits 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. The Company’s properties in Macau resumed operations on February 20, 2020 after a 15-day closure period and, effective July 15, 2020, travelers from Macau to Guangdong province are exempted from a 14-day medical observation if they test negative for COVID-19 within seven days prior to the departure and obtain appropriate health declarations from the Macau and Guangdong government health agencies; however, the properties are still subject to social distancing measures, including limitations on the number of tables allowed to operate, the number of seats available at each table and slot machine spacing, and effective July 15, 2020 guests entering casinos are required to provide negative COVID-19 test results and the appropriate health declaration from the Macau government health agency. The individual visit scheme that permits mainland Chinese residents to travel from Guangdong to Macau resumed on August 26, 2020 and approval for travel from other provinces resumed on September 23, 2020. However, 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 and bans on entry or quarantine requirements for visitors that have been to certain countries as well as Hong Kong or Taiwan in the 14 days prior to arriving in Macau), which may significantly impact visitation to the Company’s Macau properties. While the Company has engaged in aggressive cost reduction efforts to minimize cash outflows while the Company’s properties were closed, and has continued to engage in such efforts as the properties have re-opened, the Company still has significant fixed and variable expenses, which will adversely affect its profitability. In addition, the Company has seen, and expects to continue to see, weakened demand at its properties as a result of continued domestic and international travel restrictions or warnings, restrictions on amenity use, such as gaming, restaurant and pool capacity limitations, consumer fears and reduced consumer discretionary spending, general economic uncertainty, and increased rates of unemployment. In light of the foregoing, the Company is unable to determine when its properties will return to pre-pandemic demand and pricing, or if the Company’s properties will remain re-opened, but the impact of COVID-19 will have a material impact on its consolidated results of operations during 2020 and potentially thereafter.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
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 2019 annual consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. 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. For entities not determined to be a variable interest entity (“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 if it has the direct or indirect ability to control the entities’ activities 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. All intercompany balances and transactions are eliminated in consolidation. The Company’s investments in unconsolidated affiliates are accounted for under the equity method when the Company can exercise significant influence over, or has joint control of, the unconsolidated affiliate, such as CityCenter and MGP BREIT Venture. 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 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 September 30, 2020, on a consolidated basis MGP had total assets of $10.7 billion, primarily related to its real estate investments, and total liabilities of $4.4 billion, primarily related to its indebtedness. Management has determined that Bellagio BREIT Venture is a VIE because the equity holders as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is not the primary beneficiary of Bellagio BREIT Venture and, accordingly, does not consolidate the venture, because the Company does not have power to direct the activities that could potentially be significant to the venture; BREIT, as the managing member, has such power. The Company has recorded its 5% ownership interest in Bellagio BREIT Venture as an investment in unconsolidated affiliates in the Company’s consolidated financial statements, for which such amount was $60 million as of September 30, 2020. 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, as further discussed in Note 7. Reclassifications. Certain reclassifications have been made to conform the prior period presentation. 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. During the three and nine months ended September 30, 2020, commissions and incentives provided to gaming customers were $276 million and $801 million, respectively. During the three and nine months ended September 30, 2019, commissions and incentives provided to gaming customers were $687 million and $1.9 billion, respectively. 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 2020 2019 2020 2019 2020 2019 (in thousands) Balance at January 1 $ 314,570 $ 323,811 $ 126,966 $ 113,293 $ 481,095 $ 667,285 Balance at September 30 350,848 328,061 138,785 125,518 359,877 444,573 Increase / (decrease) $ 36,278 $ 4,250 $ 11,819 $ 12,225 $ (121,218 ) $ (222,712 ) 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 nine months ended September 30, 2020, lease revenues from third-party tenants include $7 million and $21 million recorded within food and beverage revenue, respectively, and $14 million and $47 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. During the three and nine months ended September 30, 2019, lease revenues from third-party tenants include $14 million and $39 million recorded within food and beverage revenue, respectively, and $22 million and $67 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. Recently issued accounting standards. In June 2016, the FASB issued ASC 326 “Financial Instruments - Credit Losses (Topic 326): Measurements of Credit Losses on Financial Instruments” (“ASC 326”), which replaces the existing incurred loss model with a current expected credit loss (CECL) model that requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company adopted ASC 326 on January 1, 2020, which did not have a material impact on its financial statements or accounting policies. The Company now utilizes a forward-looking current expected credit loss model for accounts receivables, guarantees, and other financial instruments. In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,” (“ASU 2019-12”), which simplifies the accounting for income taxes and includes removal of certain exceptions to the general principles of ASC 740, Income Taxes, and simplification in several other areas such as accounting for a franchise tax (or similar tax) that is partially based on income. The Company will adopt ASU 2019-12 on January 1, 2021 and, although the Company is currently evaluating the impact of the adoption of ASU 2019-12, the Company does not expect it to have a material impact on the consolidated financial statements.

Investments in and Advances to

Investments in and Advances to Unconsolidated Affiliates	9 Months Ended
	Sep. 30, 2020
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: September 30, December 31, 2020 2019 (In thousands) CityCenter Holdings, LLC – CityCenter ( 50% $ 454,767 $ 568,879 MGP BREIT Venture (50.1% owned by the Operating Partnership) 807,936 — Other 211,252 253,487 $ 1,473,955 $ 822,366 The Company recorded its share of income (loss) from unconsolidated affiliates, including adjustments for basis differences, as follows: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Income from unconsolidated affiliates $ 20,635 $ 36,214 $ 48,030 $ 101,967 Non-operating items from unconsolidated affiliates (23,604 ) (14,669 ) (79,986 ) (54,311 ) $ (2,969 ) $ 21,545 $ (31,956 ) $ 47,656 The following table summarizes information related to the Company’s share of income (loss) from unconsolidated affiliates: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) CityCenter $ (6,041 ) $ 39,317 $ (24,489 ) $ 105,672 MGP BREIT Venture 38,976 — 97,787 — Other (12,300 ) (3,103 ) (25,268 ) (3,705 ) $ 20,635 $ 36,214 $ 48,030 $ 101,967 MGP BREIT Venture distributions. For the three and nine months ended September 30, 2020, the Operating Partnership received $23 million and $58 million in distributions from MGP BREIT Venture, respectively. Other. During the nine months ended September 30, 2020, the Company recognized other-than-temporary impairment charges of $64 million within “Property transactions, net” in the consolidated statements of operations related to an investment in an unconsolidated affiliate classified within “Other” in the “Investments in and advances to unconsolidated affiliates” table above. CityCenter Summarized income statement information for CityCenter is as follows: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Net revenues $ 126,673 $ 320,352 $ 394,989 $ 993,215 Operating income (loss) (29,254 ) 61,464 (100,491 ) 159,831 Net income (loss) (45,267 ) 33,082 (178,588 ) 56,079 CityCenter distributions. In April 2020, CityCenter paid a $101 million distribution, of which the Company received its 50% share, or approximately $51 million. In April 2019, CityCenter paid a $116 million distribution, of which the Company received its 50% share, or approximately $58 million. In March 2019, CityCenter paid a $64 million distribution, of which the Company received its 50% share, or approximately $32 million.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 4 — LONG-TERM DEBT Long-term debt consisted of the following: September 30, December 31, 2020 2019 (In thousands) Senior credit facility $ 550,000 $ — Operating Partnership senior credit facility 100,000 1,703,750 MGM China credit facility 654,185 667,404 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 — 5.75% senior notes, due 2025 675,000 1,000,000 4.625% Operating Partnership senior notes, due 2025 800,000 — 5.25% MGM China senior notes, due 2025 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 400,000 500,000 5.75% Operating Partnership senior notes, due 2027 750,000 750,000 5.5% senior notes, due 2027 675,000 1,000,000 4.5% Operating Partnership senior notes, due 2028 350,000 350,000 7% debentures, due 2036 552 552 11,504,737 11,271,706 Less: Premiums, discounts, and unamortized debt issuance costs, net (90,007 ) (102,802 ) $ 11,414,730 $ 11,168,904 Debt due within one year of the December 31, 2019 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 September 30, 2020 , the Company’s senior credit facility consisted of a $1.5 billion revolving facility . At September 30, 2020, $550 million was drawn on the revolving credit facility and the interest rate on the revolving credit facility was 2.75%. On February 14, 2020, in connection with the MGP BREIT Venture Transaction, the Company used proceeds from the transaction to repay and terminate the $1.5 billion outstanding on its existing revolving facility in full and entered into a new unsecured credit agreement, comprised of a $1.5 billion unsecured revolving facility that matures in February 2025. As a result, the Company incurred a $4 million loss on early retirement of debt recorded in “Other, net” in the consolidated statements of operations. In April 2020, the Company amended its credit facility to provide it with certain relief from the effects of the COVID-19 pandemic. The amendment provides the Company a waiver of the financial maintenance covenants for the period beginning with the quarter ending June 30, 2020 through the earlier of (x) the date the Company delivers to the administrative agent a compliance certificate with respect to the quarter ending June 30, 2021 and (y) the date the Company delivers to the administrative agent an irrevocable notice terminating the covenant relief period (such period, the “covenant relief period”). In connection with the amendment, the Company pledged the Operating Partnership units held by loan parties to the lenders as collateral. The Company also agreed to certain limitations including, among other things, further restricting its ability to incur debt and liens, make restricted payments, make investments and prepay subordinated debt. In addition, in connection with the amendment, the Company agreed to a liquidity test that requires the Company’s borrower group (as defined in the credit agreement) to maintain a minimum liquidity level of not less than $600 million (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 September 30, 2020. Operating Partnership senior credit facility and bridge facility. At September 30, 2020, the Operating Partnership senior credit facility consisted of a $1.35 billion revolving credit facility. At September 30, 2020, $100 million was drawn on the revolving credit facility and the interest rate on the revolving credit facility was 1.85%. In February 2020, in connection with the MGP BREIT Venture Transaction, the Operating Partnership amended its senior secured credit facility to, among other things, allow for the transaction to occur, permit the incurrence by the Operating Partnership of a nonrecourse guarantee relating to the debt of the MGP BREIT Venture (refer to Note 7 for description of such guarantee), and permit the incurrence of the bridge loan facility. As a result of the transaction and the amendment, the Operating Partnership repaid its $1.3 billion outstanding term loan B facility in full with the proceeds of a bridge facility, which was then assumed by the MGP BREIT Venture as partial consideration for the Operating Partnership’s contribution. Additionally, the Operating Partnership used 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 September 30, 2020, the Operating Partnership has currently effective interest rate swap agreements on which it pays a weighted average fixed rate of 1.821% on total notional amount of $1.9 billion. The Operating Partnership has an additional $900 million total notional amount of forward starting interest rate swaps that are not currently effective. The fair value of interest rate swaps designated as cash flow hedges was $111 million, with $10 million recorded as a current liability and $101 million recorded as a long-term liability 24 MGM China credit facility. At September 30, 2020, the MGM China credit facility consisted of a $1.25 billion unsecured revolving credit facility. At September 30, 2020, $654 million was drawn on the MGM China credit facility and the weighted average interest rate was 3.20%. The MGM China 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. Due to the impact of COVID-19, in April 2020, MGM China entered into an amendment of its credit agreement which provided for a waiver of its maximum leverage ratio extending through the second quarter of 2021, and a waiver of its minimum interest coverage ratio from the second quarter of 2020 through the second quarter of 2021. In October 2020, MGM China further 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 2021. MGM China was in compliance with its applicable MGM China credit facility covenants at September 30, 2020. MGM China second credit facility. In May 2020, MGM China entered into a second credit facility, which consisted of a $300 million unsecured revolving credit facility with an option to increase the amount of the facility up to $500 million, subject to certain conditions. In June 2020, MGM China increased the amount of the second revolving credit facility by $100 million to $400 million. The MGM China second credit facility bears interest at a fluctuating rate per annum based on HIBOR plus 1.625% to 2.75%, as determined by MGM China’s leverage ratio. Draws will be subject to satisfaction of certain conditions precedent, including evidence that the MGM China credit facility has been fully drawn. At September 30, 2020, no amounts were drawn on the MGM China second credit facility The MGM China second 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. Due to the impact of COVID-19, MGM China entered into an amendment of its second credit facility in October 2020 which provided for a waiver of its maximum leverage ratio and its minimum interest coverage ratio through the fourth quarter of 2021. MGM China was in compliance with its applicable MGM China second credit facility covenants at September 30, 2020. Senior Notes. In October 2020, the Company issued $750 million in aggregate principal amount of 4.75% senior notes due 2028. In May 2020, the Company issued $750 million in aggregate principal amount of 6.75% senior notes due 2025. In March 2020, the Company completed cash tender offers for an aggregate amount of $750 million of its senior notes, comprised of $325 million principal amount of its outstanding 5.75% senior notes due 2025, $100 million principal amount of its outstanding 4.625% senior notes due 2026, and $325 million principal amount of its outstanding 5.5% senior notes due 2027. As a result, Operating Partnership senior notes. In June 2020, the Operating Partnership issued $800 million in aggregate principal amount of 4.625% senior notes due 2025. MGM China senior notes. In June 2020, MGM China issued $500 million in aggregate principal amount of 5.25% senior notes due 2025. Fair value of long-term debt. The estimated fair value of the Company’s long-term debt was $11.9 billion and $12.1 billion at September 30, 2020 and December 31, 2019, respectively. Fair value was estimated using quoted market prices for the Company’s senior notes and credit facilities.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 5 — INCOME TAXES For interim income tax reporting the Company estimates its annual effective tax rate and applies it to its year-to-date ordinary income. The tax effects of unusual or infrequently occurring items, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, are reported in the interim period in which they occur. The Company’s effective income tax rate was a benefit of 11.3% and 8.9% for the three and nine months ended September 30, 2020, respectively, compared to a benefit of 620.8% and a provision of 33.9% for the three and nine months ended September 30, 2019, 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. Due to the impact of COVID-19 on its business operations, the Company increased its valuation allowance for its foreign tax credits (“FTCs”) by $1 million and $28 million in the three and nine months ended September 30, 2020, respectively, and increased its valuation allowance for Macau deferred tax assets by $25 million in the nine months ended September 30, 2020, with corresponding increases to provision for income taxes in each period. In addition, during the nine months ended September 30, 2020, the Company recorded an income tax benefit of $6 million resulting from recently issued guidance related to deductions for employee dining facilities and income tax expense of $349 million related to the MGP BREIT Venture Transaction that closed on February 14, 2020. 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. On March 30, 2020, MGM Grand Paradise was granted an extension of its exemption from the Macau 12% complementary tax on gaming profits through June 26, 2022, concurrent with the end of the term of its gaming subconcession. The prior exemption was set to expire on March 31, 2020. The Company previously re-measured its net deferred tax liability for MGM Grand Paradise during 2019 assuming it would receive the complementary tax exemption extension through June 26, 2022 as a result of required non-discriminatory treatment among gaming concessionaires and sub-concessionaires under Macanese law. As a result, no additional remeasurement is required for the three and nine months ended September 30, 2020. The Company continues to assume that MGM Grand Paradise will pay the Macau 12% complementary tax on gaming profits for all periods beyond June 26, 2022 and has factored that assumption into the measurement of Macau deferred tax assets and liabilities. MGM Grand Paradise’s exemption from the 12% complementary tax on gaming profits does not apply to dividend distributions of such profits to MGM China. MGM Grand Paradise has an agreement with the Macau government 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 payment (“annual fee arrangement”) regardless of the amount of distributable dividends. Such annual fee arrangement covers the distributions of gaming profits earned for the period of January 1, 2017 through March 31, 2020. MGM Grand Paradise has applied for an extension of the annual fee arrangement to cover distributions of gaming profits to be earned through June 26, 2022. Until the extension is granted, the 12% complementary tax will accrue on distributions of gaming profits earned after March 31, 2020; however, no amounts are accrued for the three and nine months ended September 30, 2020 since MGM Grand Paradise is generating losses due to the impact of COVID-19.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
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 lease provides for an initial annual rent for the lease year beginning November 15, 2019 and ending November 30, 2020 of $245 million with a fixed 2% escalator for the first ten years and, thereafter, an escalator equal to the greater of 2% and the CPI increase during the prior year, subject to a cap of 3% during the 11th through 20th years and 4% thereafter. T he lease requires the Company to spend a specified percentage of net revenues at the property on capital expenditures and for the Company to comply with certain financial covenants, which, if not met, would require the Company to maintain cash security or a letter of credit in favor of the landlord in an amount equal to rent for the succeeding two-year period. The Company was in compliance with its applicable covenants as of September 30, 2020. Mandalay Bay and MGM Grand Las Vegas real estate assets. Pursuant to a lease agreement between a subsidiary of the Company and MGP BREIT Venture, the Company leases the real estate assets of Mandalay Bay and MGM Grand Las Vegas from the MGP BREIT Venture. The Mandalay Bay and MGM Grand Las Vegas lease has an initial term of 30 years with two subsequent ten-year In addition, the lease requires the Company to spend a specified percentage of net revenues at the properties on capital expenditures and for the Company to comply with certain financial covenants, which, if not met, will require the Company to maintain cash security or provide one or more letters of credit in favor of the landlord in an amount equal to the rent for the succeeding one-year period. The Company was in compliance with its applicable covenants as of September 30, 2020. Other information. Components of lease costs and other information related to the Company’s leases was as follows: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 199,166 $ 25,520 $ 551,807 $ 75,777 Finance lease costs Interest expense (2) $ (5,990 ) $ 208 $ (19,796 ) $ 621 Amortization expense 17,851 2,277 52,495 7,247 Total finance lease costs $ 11,861 $ 2,485 $ 32,699 $ 7,868 (1) For the three and nine months ended September 30, 2020, operating lease cost includes $83 million and $248 million related to the Bellagio lease, respectively, and $99 million and $248 million related to the Mandalay Bay and MGM Grand Las Vegas lease, respectively. (2) For the three and nine months ended September 30, 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. September 30, December 31, 2020 2019 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (3) $ 8,330,530 $ 4,392,481 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 35,651 $ 67,473 Operating lease liabilities - long-term (4) 8,380,341 4,277,970 Total operating lease liabilities $ 8,415,992 $ 4,345,443 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 217,321 $ 93,437 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 79,087 $ 27,975 Finance lease liabilities - long-term, classified within "Other long-term obligations" 151,472 67,182 Total finance lease liabilities $ 230,559 $ 95,157 Weighted-average remaining lease term (years) Operating leases 30 31 Finance leases 3 4 Weighted-average discount rate (%) Operating leases 8 7 Finance leases 3 3 (3) As of September 30, 2020 and December 31, 2019, operating lease right-of-use assets, net included $3.7 billion and $3.7 billion related to the Bellagio lease, respectively and $4.1 billion and $0 related to the Mandalay Bay and MGM Grand lease, respectively. (4) As of September 30, 2020 and December 31, 2019, operating lease liabilities – long-term included $3.8 billion and $3.7 billion related to the Bellagio lease, respectively and $4.1 billion and $0 related to the Mandalay Bay and MGM Grand lease, respectively. Nine Months Ended September 30, 2020 2019 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 421,932 $ 66,562 Operating cash outflows from finance leases 1,741 621 Financing cash outflows from finance leases 19,514 5,533 ROU assets obtained in exchange for new lease liabilities Operating leases $ 4,120,312 $ 45,387 Finance leases 175,446 4,215 Maturities of lease liabilities were as follows: Operating Leases Finance Leases Year ending December 31, 2020 (In thousands) 2020 (excluding the nine months ended September 30, 2020) $ 152,226 $ 28,720 2021 610,886 73,951 2022 615,855 72,240 2023 625,365 63,718 2024 635,755 1,034 Thereafter 20,445,881 517 Total future minimum lease payments 23,085,968 240,180 Less: Amount of lease payments representing interest (14,669,976 ) (9,621 ) Present value of future minimum lease payments 8,415,992 230,559 Less: Current portion (35,651 ) (79,087 ) Long-term portion of lease liabilities $ 8,380,341 $ 151,472

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 7 — COMMITMENTS AND CONTINGENCIES October 1 litigation. The Company and/or certain of its subsidiaries were named as defendants in a number of lawsuits related to the October 1, 2017 shooting in Las Vegas. The matters involve in large degree the same legal and factual issues, each case being filed on behalf of individuals who are seeking damages for emotional distress, physical injury, medical expenses, economic damages and/or wrongful death. Lawsuits were first filed in October 2017 and include actions originally filed in the District Court of Clark County, Nevada and in the Superior Court of Los Angeles County, California. In June 2018, the Company removed to federal court all actions that remained pending in California and Nevada state courts. The Company also initiated declaratory relief actions in federal courts in various districts against individuals who had sued or stated an intent to sue. In connection with the mediation of these matters, the Company and law firms representing plaintiffs in the majority of pending matters and purporting to represent substantially all claimants known to the Company (collectively, the “Claimants”) have entered into a settlement agreement (the “Settlement Agreement”) whereby, subject to the satisfaction of certain monetary and non-monetary conditions, the Company’s insurance carriers will deposit funds into a settlement fund covering participating claimants. Claimants had to elect whether to participate in the settlement. Substantially all claimants did elect to participate in the settlement, and that election is final. The Nevada court issued an order of good faith settlement determination with respect to the Settlement Agreement on September 30, 2020. The deadline for appeals to that decision was October 30, 2020. No such appeals have been filed. That determination was the last step, prior to funding, in the settlement process. As a result, the Company and its insurance carriers expect to deposit $800 million by November 13, 2020 into a settlement fund covering the participating claimants, which the Company has accrued, and of which $751 million will be funded by the Company’s insurers, recorded as an insurance receivable, and $49 million will be funded by the Company, reflected within “Corporate expense” on the accompanying consolidated statements of operations for the nine months ended September 30, 2020. While the Company intends for substantially all claimants to be covered by the Settlement Agreement, it remains possible that certain lawsuits may not be resolved by the settlement. Following the mediation, a few additional lawsuits related to non-physical injury claims were filed against the Company and/or certain of its subsidiaries which are not included in the Settlement Agreement. The Company will continue to investigate the factual and legal defenses to any remaining claims, and evaluate these matters based on subsequent events, new information and future circumstances but the Company does not believe any remaining claims would be considered material. The Company intends to defend against any such lawsuits and believes it ultimately should prevail, but litigation of this type is inherently unpredictable. The foregoing determination was made in accordance with generally accepted accounting principles, as codified in ASC 450-20, and is not an admission of any liability on the part of the Company or any of its affiliates. The Company’s general liability insurance coverage provides, as part of the contractual “duty to defend,” payment of legal fees and associated costs incurred to defend covered lawsuits that are filed arising from the October 1, 2017 shooting in Las Vegas. Payment of such fees and costs is in addition to (and not limited by) the limits of the insurance policies and does not erode the total liability coverage available. Other litigation. The Company is a party to various legal proceedings, most of which relate to routine matters incidental to its business. Management does not believe that the outcome of such proceedings will have a material adverse effect on the Company’s financial position, results of operations or cash flows . Other guarantees. The Company and its subsidiaries are party to various guarantee contracts in the normal course of business, which are generally supported by letters of credit issued by financial institutions . The Company’s senior credit facility limits the amount of letters of credit that can be issued to $850 million. At September 30, 2020, $28 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 September 30, 2020. The amount of available borrowings under each of the credit facilities is reduced by any outstanding letters of credit. MGM China guarantee. In connection with the extension of the expiration of the gaming subconcession to June 2022, MGM Grand Paradise provided a bank guarantee in an amount of approximately $103 million (when giving effect to foreign currency exchange rate fluctuations) to the government of Macau in May 2019 to warrant the fulfillment of an existing commitment of labor liabilities upon the expiration of the gaming subconcession in June 2022. Bellagio BREIT Venture 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 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. 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	9 Months Ended
	Sep. 30, 2020
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 net income attributable to common stockholders includes adjustments for redeemable noncontrolling interests and the potentially dilutive effect on the Company’s equity interests in MGP and MGM China due to shares outstanding under their respective stock compensation plans. 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 Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ (534,731 ) $ (37,133 ) $ (585,119 ) $ 37,569 Adjustment related to redeemable noncontrolling interests 1,777 (3,074 ) 42,028 (5,906 ) Net income (loss) available to common stockholders - basic (532,954 ) (40,207 ) (543,091 ) 31,663 Potentially dilutive effect due to MGP and MGM China stock compensation plans (25 ) (30 ) (21 ) (111 ) Net income (loss) attributable to common stockholders - diluted $ (532,979 ) $ (40,237 ) $ (543,112 ) $ 31,552 Denominator: Weighted-average common shares outstanding - basic 493,517 518,983 494,126 528,429 Potential dilution from share-based awards — — — 3,444 Weighted-average common and common equivalent shares - diluted 493,517 518,983 494,126 531,873 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 6,183 1,108 5,143 1,816

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Stockholders' Equity	NOTE 9 — STOCKHOLDERS’ EQUITY Noncontrolling interest ownership transactions Empire City transaction. On January 29, 2019, MGP acquired the developed real property associated with Empire City from the Company for consideration that included the issuance of approximately 13 million Operating Partnership units to a subsidiary of the Company. 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 Empire City transaction, the Company indirectly owned 74.6% of the partnership units in the Operating Partnership. MGP Class A share issuance – January 2019. On January 31, 2019, MGP completed an offering of approximately 20 million of its Class A shares. In connection with the offering, the Operating Partnership issued approximately 20 million Operating Partnership units to MGP. The Company adjusted the carrying value of the noncontrolling interests as a result of MGP’s Class A share issuance to adjust 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 issuance, the Company indirectly owned 69.7% of the partnership units in the Operating Partnership. Park MGM transaction. On March 7, 2019, the Company entered into an amendment to the MGP master lease with respect to investments made by the Company related to Park MGM and NoMad Las Vegas property for which consideration included the issuance of approximately 1 million Operating Partnership units to a subsidiary of the Company. 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 issuance, the Company indirectly owned 69.8% of the partnership units in the Operating Partnership. Northfield OpCo transaction. In April 2019, the Company acquired the membership interests of Northfield Park Associates, LLC (“Northfield OpCo”) from MGP for consideration of approximately 9 million Operating Partnership units that were ultimately redeemed by the Operating Partnership and MGP retained the real estate assets. 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 transaction, the Company indirectly owned 68.8% of the partnership units in the Operating Partnership. MGP Class A share issuances – At-the-Market (“ATM”) program. During the three and nine months ended September 30, 2019, MGP issued approximately 3 and 5 million Class A shares under its ATM program, respectively. In connection with the issuances, the Operating Partnership issued 3 and 5 million Operating Partnership units to MGP during the three and nine months ended September 30, 2019, respectively. 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 issuances, the Company indirectly owned 67.7% of the partnership units in the Operating Partnership. MGP Class A share issuance – Forward settlements. On February 11, 2020 through February 13, 2020, MGP settled approximately 13 million Class A shares issued under forward sales agreements. In connection with the settlements, the Operating Partnership issued approximately 13 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 settlements, the Company indirectly owned 61.2% of the partnership units in the Operating Partnership. MGP Class A share issuance – BREIT. On February 14, 2020, in connection with MGP’s registered sale of approximately 5 million Class A shares to BREIT, the Operating Partnership issued approximately 5 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 issuance, the Company indirectly owned 60.3% of the partnership units in the Operating Partnership. MGP Class A share issuance – MGP BREIT Venture Transaction. In February 2020, in connection with the MGP BREIT Venture Transaction, the Operating Partnership issued approximately 3 million Operating Partnership units to the Company as discussed in Note 1. 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 issuance, the Company indirectly owned 60.6% of the partnership units in the Operating Partnership. Redemption of Operating Partnership units. On May 18, 2020, the Operating Partnership redeemed approximately 30 million Operating Partnership units from the Company for $700 million pursuant to the waiver agreement discussed in Note 1. 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 redemption, and as of September 30, 2020, the Company indirectly owned 56.7% of the partnership units in the Operating Partnership. Other equity activity MGM Resorts International dividends. On October 29, 2020 the Company’s Board of Directors approved a quarterly dividend of $0.0025 per share that will be payable on December 15, 2020 to holders of record on December 10, 2020 MGM Resorts International stock repurchase program. In February 2020, upon substantial completion of the $2.0 billion stock repurchase program, the Company’s Board of Directors authorized a $3.0 billion stock repurchase program. Under the 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 There were no repurchases made during the three months ended September 30, 2020. During the nine months ended September 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. The remaining availability under the $2.0 billion stock repurchase program was approximately $4 million as of September 30, 2020 and the remaining availability under the $3.0 billion stock repurchase program was $3.0 billion as of September 30, 2020. During the three months ended September 30, 2019, the Company repurchased approximately 13 million shares of its common stock at an average price of $28.33 per share for an aggregate amount of $357 million. During the nine months ended September 30, 2019, the Company repurchased approximately 24 million shares of its common stock at an average price of $27.06 per share for an aggregate amount of $639 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, June 30, 2020 $ 13,182 $ (60,487 ) $ 8,275 $ (39,030 ) Other comprehensive income (loss) before reclassifications 538 (6,852 ) — (6,314 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 6,404 — 6,404 Other comprehensive income (loss), net of tax 538 (448 ) — 90 Changes in accumulated other comprehensive income (loss): 538 (448 ) — 90 Other comprehensive income attributable to noncontrolling interest (114 ) (316 ) — (430 ) Balances, September 30, 2020 $ 13,606 $ (61,251 ) $ 8,275 $ (39,370 ) Balances, January 1, 2020 $ (2,747 ) $ (10,829 ) $ 3,374 $ (10,202 ) Other comprehensive income (loss) before reclassifications 29,163 (104,355 ) — (75,192 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 13,707 — 13,707 Other comprehensive income (loss), net of tax 29,163 (90,648 ) — (61,485 ) Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 646 646 MGP BREIT Venture Transaction — — (59 ) (59 ) Redemption of Operating Partnership units — — 4,772 4,772 Other — — (458 ) (458 ) Changes in accumulated other comprehensive income (loss): 29,163 (90,648 ) 4,901 (56,584 ) Other comprehensive loss (income) attributable to noncontrolling interest (12,810 ) 40,226 — 27,416 Balances, September 30, 2020 $ 13,606 $ (61,251 ) $ 8,275 $ (39,370 )

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2020
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, Park MGM (including NoMad Las Vegas) and Circus Circus Las Vegas (until the sale of such property in December 2019). 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 (upon acquisition in January 2019); and MGM Northfield Park in Northfield Park, Ohio (upon MGM’s acquisition of the operations from MGP in April 2019). MGM China. MGM China consists of MGM Macau and MGM Cotai. The Company’s operations related to investments in unconsolidated affiliates, MGM Northfield Park (prior to April 1, 2019 as the operations were owned by MGP until that date), 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. A s a result of the Bellagio transaction in the fourth quarter of 2019, the Company records rent expense associated with the triple-net operating lease with Bellagio BREIT Venture. In order to present profit and loss of each reportable segment on a similar economic basis, the rent expense associated with the triple - net operating leases and ground leases is added back within the financial information reviewed by the chief operating decision maker as presented below, including recasting of prior year periods. 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 Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 189,358 $ 336,262 $ 527,059 $ 969,149 Rooms 137,869 469,145 526,838 1,407,733 Food and beverage 81,429 401,362 391,218 1,156,657 Entertainment, retail and other 72,762 300,679 320,920 868,441 481,418 1,507,448 1,766,035 4,401,980 Regional Operations Casino 464,789 660,748 1,078,596 1,888,852 Rooms 34,782 90,197 94,842 243,449 Food and beverage 38,646 126,625 138,052 368,374 Entertainment, retail and other 18,609 57,448 60,260 149,241 556,826 935,018 1,371,750 2,649,916 MGM China Casino 35,297 662,838 298,995 1,959,582 Rooms 2,800 36,294 19,344 105,171 Food and beverage 6,240 32,214 23,451 93,836 Entertainment, retail and other 2,530 6,409 10,162 19,459 46,867 737,755 351,952 2,178,048 Reportable segment net revenues 1,085,111 3,180,221 3,489,737 9,229,944 Corporate and other 40,809 134,161 178,809 484,592 $ 1,125,920 $ 3,314,382 $ 3,668,546 $ 9,714,536 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 15,125 $ 441,281 $ 178,277 $ 1,263,271 Regional Operations 145,734 269,125 185,369 741,710 MGM China (96,446 ) 183,989 (234,724 ) 549,603 Reportable segment Adjusted Property EBITDAR 64,413 894,395 128,922 2,554,584 Other operating income (expense) Corporate and other (113,190 ) (72,707 ) (374,769 ) (220,844 ) Preopening and start-up expenses (11 ) (925 ) (51 ) (5,091 ) Property transactions, net (4,116 ) (249,858 ) (85,440 ) (264,424 ) Gain on REIT transactions, net — — 1,491,945 — Depreciation and amortization (294,363 ) (322,009 ) (911,859 ) (973,211 ) CEO transition expense — — (44,401 ) — October 1 litigation settlement — — (49,000 ) — Restructuring — (2,491 ) (19,882 ) (86,579 ) Triple-net operating lease and ground lease rent expense (189,602 ) (8,024 ) (521,087 ) (24,309 ) Income from unconsolidated affiliates related to real estate ventures 41,687 — 106,756 — Operating income (loss) (495,182 ) 238,381 (278,866 ) 980,126 Non-operating income (expense) Interest expense, net of amounts capitalized (173,808 ) (215,503 ) (487,701 ) (647,452 ) Non-operating items from unconsolidated affiliates (23,604 ) (14,669 ) (79,986 ) (54,311 ) Other, net 13,889 (9,381 ) (102,054 ) (53,964 ) (183,523 ) (239,553 ) (669,741 ) (755,727 ) Income (loss) before income taxes (678,705 ) (1,172 ) (948,607 ) 224,399 Benefit (provision) for income taxes 76,734 7,276 84,668 (75,969 ) Net income (loss) (601,971 ) 6,104 (863,939 ) 148,430 Less: Net (income) loss attributable to noncontrolling interests 67,240 (43,237 ) 278,820 (110,861 ) Net income (loss) attributable to MGM Resorts International $ (534,731 ) $ (37,133 ) $ (585,119 ) $ 37,569

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2020
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 . On February 14, 2020, the Company amended the MGP master lease to remove Mandalay Bay from such master lease and the annual rent under the MGP master lease was reduced by $133 million to $813 million. The annual rent payments under the MGP master lease for the fifth lease year, which commenced on April 1, 2020, increased to $828 million from $813 million, as a result of the fourth 2.0% fixed annual rent escalator that went into effect on April 1, 2020. Additionally, refer to Note 1 for discussion relating to the waiver agreement with MGP and the Operating Partnership units redeemed thereunder. All intercompany transactions, including transactions under the MGP master lease, have been eliminated in the Company’s consolidation of MGP. The public ownership of MGP’s Class A shares is recognized as noncontrolling interests in the Company’s consolidated financial statements. Bellagio BREIT Venture The Company has a 5% ownership interest in the Bellagio BREIT Venture, which owns the real estate assets of Bellagio and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 6 for further information related to the Bellagio lease. MGP BREIT Venture MGP has a 50.1% ownership interest in the MGP BREIT Venture, which owns the real estate assets of Mandalay Bay and MGM Grand Las Vegas and leases such assets to a subsidiary of the Company pursuant to a lease agreement. Refer to Note 6 for further information related to the Mandalay Bay and MGM Grand Las Vegas lease.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
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 2019 annual consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. 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. For entities not determined to be a variable interest entity (“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 if it has the direct or indirect ability to control the entities’ activities 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. All intercompany balances and transactions are eliminated in consolidation. The Company’s investments in unconsolidated affiliates are accounted for under the equity method when the Company can exercise significant influence over, or has joint control of, the unconsolidated affiliate, such as CityCenter and MGP BREIT Venture. 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 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 September 30, 2020, on a consolidated basis MGP had total assets of $10.7 billion, primarily related to its real estate investments, and total liabilities of $4.4 billion, primarily related to its indebtedness. Management has determined that Bellagio BREIT Venture is a VIE because the equity holders as a group lack the power through voting or similar rights to direct the activities of such entity that most significantly impact such entity’s economic performance. The Company has determined that it is not the primary beneficiary of Bellagio BREIT Venture and, accordingly, does not consolidate the venture, because the Company does not have power to direct the activities that could potentially be significant to the venture; BREIT, as the managing member, has such power. The Company has recorded its 5% ownership interest in Bellagio BREIT Venture as an investment in unconsolidated affiliates in the Company’s consolidated financial statements, for which such amount was $60 million as of September 30, 2020. 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, as further discussed in Note 7.
Reclassifications	Reclassifications. Certain reclassifications have been made to conform the prior period presentation.
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. During the three and nine months ended September 30, 2020, commissions and incentives provided to gaming customers were $276 million and $801 million, respectively. During the three and nine months ended September 30, 2019, commissions and incentives provided to gaming customers were $687 million and $1.9 billion, respectively. 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 2020 2019 2020 2019 2020 2019 (in thousands) Balance at January 1 $ 314,570 $ 323,811 $ 126,966 $ 113,293 $ 481,095 $ 667,285 Balance at September 30 350,848 328,061 138,785 125,518 359,877 444,573 Increase / (decrease) $ 36,278 $ 4,250 $ 11,819 $ 12,225 $ (121,218 ) $ (222,712 ) 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 nine months ended September 30, 2020, lease revenues from third-party tenants include $7 million and $21 million recorded within food and beverage revenue, respectively, and $14 million and $47 million recorded within entertainment, retail, and other revenue for the same such periods, respectively. During the three and nine months ended September 30, 2019, lease revenues from third-party tenants include $14 million and $39 million recorded within food and beverage revenue, respectively, and $22 million and $67 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.
Recently issued accounting standards	Recently issued accounting standards. In June 2016, the FASB issued ASC 326 “Financial Instruments - Credit Losses (Topic 326): Measurements of Credit Losses on Financial Instruments” (“ASC 326”), which replaces the existing incurred loss model with a current expected credit loss (CECL) model that requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The Company adopted ASC 326 on January 1, 2020, which did not have a material impact on its financial statements or accounting policies. The Company now utilizes a forward-looking current expected credit loss model for accounts receivables, guarantees, and other financial instruments. In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,” (“ASU 2019-12”), which simplifies the accounting for income taxes and includes removal of certain exceptions to the general principles of ASC 740, Income Taxes, and simplification in several other areas such as accounting for a franchise tax (or similar tax) that is partially based on income. The Company will adopt ASU 2019-12 on January 1, 2021 and, although the Company is currently evaluating the impact of the adoption of ASU 2019-12, the Company does not expect it to have a material impact on the consolidated financial statements.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2020
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 2020 2019 2020 2019 2020 2019 (in thousands) Balance at January 1 $ 314,570 $ 323,811 $ 126,966 $ 113,293 $ 481,095 $ 667,285 Balance at September 30 350,848 328,061 138,785 125,518 359,877 444,573 Increase / (decrease) $ 36,278 $ 4,250 $ 11,819 $ 12,225 $ (121,218 ) $ (222,712 )

Investments in and Advances t_2

Investments in and Advances to Unconsolidated Affiliates (Tables)	9 Months Ended
	Sep. 30, 2020
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: September 30, December 31, 2020 2019 (In thousands) CityCenter Holdings, LLC – CityCenter ( 50% $ 454,767 $ 568,879 MGP BREIT Venture (50.1% owned by the Operating Partnership) 807,936 — Other 211,252 253,487 $ 1,473,955 $ 822,366
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 Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Income from unconsolidated affiliates $ 20,635 $ 36,214 $ 48,030 $ 101,967 Non-operating items from unconsolidated affiliates (23,604 ) (14,669 ) (79,986 ) (54,311 ) $ (2,969 ) $ 21,545 $ (31,956 ) $ 47,656
Schedule of Share of Income (Loss) From Unconsolidated Affiliates	The following table summarizes information related to the Company’s share of income (loss) from unconsolidated affiliates: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) CityCenter $ (6,041 ) $ 39,317 $ (24,489 ) $ 105,672 MGP BREIT Venture 38,976 — 97,787 — Other (12,300 ) (3,103 ) (25,268 ) (3,705 ) $ 20,635 $ 36,214 $ 48,030 $ 101,967
Summarized Income Statement Information	Summarized income statement information for CityCenter is as follows: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Net revenues $ 126,673 $ 320,352 $ 394,989 $ 993,215 Operating income (loss) (29,254 ) 61,464 (100,491 ) 159,831 Net income (loss) (45,267 ) 33,082 (178,588 ) 56,079

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: September 30, December 31, 2020 2019 (In thousands) Senior credit facility $ 550,000 $ — Operating Partnership senior credit facility 100,000 1,703,750 MGM China credit facility 654,185 667,404 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 — 5.75% senior notes, due 2025 675,000 1,000,000 4.625% Operating Partnership senior notes, due 2025 800,000 — 5.25% MGM China senior notes, due 2025 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 400,000 500,000 5.75% Operating Partnership senior notes, due 2027 750,000 750,000 5.5% senior notes, due 2027 675,000 1,000,000 4.5% Operating Partnership senior notes, due 2028 350,000 350,000 7% debentures, due 2036 552 552 11,504,737 11,271,706 Less: Premiums, discounts, and unamortized debt issuance costs, net (90,007 ) (102,802 ) $ 11,414,730 $ 11,168,904

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
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 Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Operating lease cost, primarily classified within "General and administrative" (1) $ 199,166 $ 25,520 $ 551,807 $ 75,777 Finance lease costs Interest expense (2) $ (5,990 ) $ 208 $ (19,796 ) $ 621 Amortization expense 17,851 2,277 52,495 7,247 Total finance lease costs $ 11,861 $ 2,485 $ 32,699 $ 7,868 (1) For the three and nine months ended September 30, 2020, operating lease cost includes $83 million and $248 million related to the Bellagio lease, respectively, and $99 million and $248 million related to the Mandalay Bay and MGM Grand Las Vegas lease, respectively. (2) For the three and nine months ended September 30, 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	September 30, December 31, 2020 2019 Supplemental balance sheet information (In thousands) Operating leases Operating lease right-of-use assets, net (3) $ 8,330,530 $ 4,392,481 Operating lease liabilities - current, classified within "Other accrued liabilities" $ 35,651 $ 67,473 Operating lease liabilities - long-term (4) 8,380,341 4,277,970 Total operating lease liabilities $ 8,415,992 $ 4,345,443 Finance leases Finance lease right-of-use assets, net classified within "Property and equipment, net" $ 217,321 $ 93,437 Finance lease liabilities - current, classified within "Other accrued liabilities" $ 79,087 $ 27,975 Finance lease liabilities - long-term, classified within "Other long-term obligations" 151,472 67,182 Total finance lease liabilities $ 230,559 $ 95,157 Weighted-average remaining lease term (years) Operating leases 30 31 Finance leases 3 4 Weighted-average discount rate (%) Operating leases 8 7 Finance leases 3 3 (3) As of September 30, 2020 and December 31, 2019, operating lease right-of-use assets, net included $3.7 billion and $3.7 billion related to the Bellagio lease, respectively and $4.1 billion and $0 related to the Mandalay Bay and MGM Grand lease, respectively. (4) As of September 30, 2020 and December 31, 2019, operating lease liabilities – long-term included $3.8 billion and $3.7 billion related to the Bellagio lease, respectively and $4.1 billion and $0 related to the Mandalay Bay and MGM Grand lease, respectively.
Schedule of Cash Paid for Amounts Included in Measurement of Lease Liabilities and ROU Assets Obtained in Exchange for New Lease Liabilities	Nine Months Ended September 30, 2020 2019 Cash paid for amounts included in the measurement of lease liabilities (In thousands) Operating cash outflows from operating leases $ 421,932 $ 66,562 Operating cash outflows from finance leases 1,741 621 Financing cash outflows from finance leases 19,514 5,533 ROU assets obtained in exchange for new lease liabilities Operating leases $ 4,120,312 $ 45,387 Finance leases 175,446 4,215
Schedule of Maturities of Lease Liabilities	Maturities of lease liabilities were as follows: Operating Leases Finance Leases Year ending December 31, 2020 (In thousands) 2020 (excluding the nine months ended September 30, 2020) $ 152,226 $ 28,720 2021 610,886 73,951 2022 615,855 72,240 2023 625,365 63,718 2024 635,755 1,034 Thereafter 20,445,881 517 Total future minimum lease payments 23,085,968 240,180 Less: Amount of lease payments representing interest (14,669,976 ) (9,621 ) Present value of future minimum lease payments 8,415,992 230,559 Less: Current portion (35,651 ) (79,087 ) Long-term portion of lease liabilities $ 8,380,341 $ 151,472

Income Per Share of Common St_2

Income Per Share of Common Stock (Tables)	9 Months Ended
	Sep. 30, 2020
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	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 Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Numerator: Net income (loss) attributable to MGM Resorts International $ (534,731 ) $ (37,133 ) $ (585,119 ) $ 37,569 Adjustment related to redeemable noncontrolling interests 1,777 (3,074 ) 42,028 (5,906 ) Net income (loss) available to common stockholders - basic (532,954 ) (40,207 ) (543,091 ) 31,663 Potentially dilutive effect due to MGP and MGM China stock compensation plans (25 ) (30 ) (21 ) (111 ) Net income (loss) attributable to common stockholders - diluted $ (532,979 ) $ (40,237 ) $ (543,112 ) $ 31,552 Denominator: Weighted-average common shares outstanding - basic 493,517 518,983 494,126 528,429 Potential dilution from share-based awards — — — 3,444 Weighted-average common and common equivalent shares - diluted 493,517 518,983 494,126 531,873 Antidilutive share-based awards excluded from the calculation of diluted earnings per share 6,183 1,108 5,143 1,816

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2020
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, June 30, 2020 $ 13,182 $ (60,487 ) $ 8,275 $ (39,030 ) Other comprehensive income (loss) before reclassifications 538 (6,852 ) — (6,314 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 6,404 — 6,404 Other comprehensive income (loss), net of tax 538 (448 ) — 90 Changes in accumulated other comprehensive income (loss): 538 (448 ) — 90 Other comprehensive income attributable to noncontrolling interest (114 ) (316 ) — (430 ) Balances, September 30, 2020 $ 13,606 $ (61,251 ) $ 8,275 $ (39,370 ) Balances, January 1, 2020 $ (2,747 ) $ (10,829 ) $ 3,374 $ (10,202 ) Other comprehensive income (loss) before reclassifications 29,163 (104,355 ) — (75,192 ) Amounts reclassified from accumulated other comprehensive loss to interest expense — 13,707 — 13,707 Other comprehensive income (loss), net of tax 29,163 (90,648 ) — (61,485 ) Other changes in accumulated other comprehensive income (loss): MGP Class A share issuances — — 646 646 MGP BREIT Venture Transaction — — (59 ) (59 ) Redemption of Operating Partnership units — — 4,772 4,772 Other — — (458 ) (458 ) Changes in accumulated other comprehensive income (loss): 29,163 (90,648 ) 4,901 (56,584 ) Other comprehensive loss (income) attributable to noncontrolling interest (12,810 ) 40,226 — 27,416 Balances, September 30, 2020 $ 13,606 $ (61,251 ) $ 8,275 $ (39,370 )

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Schedule of Segment Information	The following tables present the Company’s segment information: Three Months Ended Nine Months Ended September 30, September 30, 2020 2019 2020 2019 (In thousands) Net revenue Las Vegas Strip Resorts Casino $ 189,358 $ 336,262 $ 527,059 $ 969,149 Rooms 137,869 469,145 526,838 1,407,733 Food and beverage 81,429 401,362 391,218 1,156,657 Entertainment, retail and other 72,762 300,679 320,920 868,441 481,418 1,507,448 1,766,035 4,401,980 Regional Operations Casino 464,789 660,748 1,078,596 1,888,852 Rooms 34,782 90,197 94,842 243,449 Food and beverage 38,646 126,625 138,052 368,374 Entertainment, retail and other 18,609 57,448 60,260 149,241 556,826 935,018 1,371,750 2,649,916 MGM China Casino 35,297 662,838 298,995 1,959,582 Rooms 2,800 36,294 19,344 105,171 Food and beverage 6,240 32,214 23,451 93,836 Entertainment, retail and other 2,530 6,409 10,162 19,459 46,867 737,755 351,952 2,178,048 Reportable segment net revenues 1,085,111 3,180,221 3,489,737 9,229,944 Corporate and other 40,809 134,161 178,809 484,592 $ 1,125,920 $ 3,314,382 $ 3,668,546 $ 9,714,536 Adjusted Property EBITDAR Las Vegas Strip Resorts $ 15,125 $ 441,281 $ 178,277 $ 1,263,271 Regional Operations 145,734 269,125 185,369 741,710 MGM China (96,446 ) 183,989 (234,724 ) 549,603 Reportable segment Adjusted Property EBITDAR 64,413 894,395 128,922 2,554,584 Other operating income (expense) Corporate and other (113,190 ) (72,707 ) (374,769 ) (220,844 ) Preopening and start-up expenses (11 ) (925 ) (51 ) (5,091 ) Property transactions, net (4,116 ) (249,858 ) (85,440 ) (264,424 ) Gain on REIT transactions, net — — 1,491,945 — Depreciation and amortization (294,363 ) (322,009 ) (911,859 ) (973,211 ) CEO transition expense — — (44,401 ) — October 1 litigation settlement — — (49,000 ) — Restructuring — (2,491 ) (19,882 ) (86,579 ) Triple-net operating lease and ground lease rent expense (189,602 ) (8,024 ) (521,087 ) (24,309 ) Income from unconsolidated affiliates related to real estate ventures 41,687 — 106,756 — Operating income (loss) (495,182 ) 238,381 (278,866 ) 980,126 Non-operating income (expense) Interest expense, net of amounts capitalized (173,808 ) (215,503 ) (487,701 ) (647,452 ) Non-operating items from unconsolidated affiliates (23,604 ) (14,669 ) (79,986 ) (54,311 ) Other, net 13,889 (9,381 ) (102,054 ) (53,964 ) (183,523 ) (239,553 ) (669,741 ) (755,727 ) Income (loss) before income taxes (678,705 ) (1,172 ) (948,607 ) 224,399 Benefit (provision) for income taxes 76,734 7,276 84,668 (75,969 ) Net income (loss) (601,971 ) 6,104 (863,939 ) 148,430 Less: Net (income) loss attributable to noncontrolling interests 67,240 (43,237 ) 278,820 (110,861 ) Net income (loss) attributable to MGM Resorts International $ (534,731 ) $ (37,133 ) $ (585,119 ) $ 37,569

Organization - Additional Infor

Organization - Additional Information (Detail) $ in Thousands, shares in Millions	May 18, 2020USD ($)shares	Feb. 14, 2020USD ($)shares	Feb. 13, 2020shares	Feb. 29, 2020shares	Jan. 31, 2019shares	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)shares	Sep. 30, 2020USD ($)PropertySegment	Sep. 30, 2019USD ($)shares	Dec. 31, 2019USD ($)
Organization Disclosure [Line Items]
Percentage of minority interest						43.30%		43.30%
Debt carrying amount						$ 11,504,737		$ 11,504,737		$ 11,271,706
Payment for purchase of common shares								353,720	$ 638,815
Revenues						1,125,920	$ 3,314,382	3,668,546	9,714,536
Gain (loss) on sales of real estate assets						$ 0	$ 0	1,491,945	$ 0
Cash proceeds for redemption								$ 3,205
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%
Infinity World Development Corp [Member] | CityCenter Holdings LLC As Investee [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%
Total consideration received from sale of real estate assets		$ 4,600,000
Cash received from sale of real estate assets		$ 2,500,000
Operating partnership equity interest		50.10%
Issuance of operating partnership units | shares		3		3
Percentage of issuance of operating partnership units to equity value of consolidated subsidiary		5.00%
Reduction in lease annual rent due to modification		$ 133,000
MGP BREIT Venture [Member] | Term Loan B [Member]
Organization Disclosure [Line Items]
Debt carrying amount		$ 1,300,000
Blackstone Real Estate Income Trust [Member] | Class A Shareholders [Member]
Organization Disclosure [Line Items]
Ordinary shares acquired | shares		5
Payment for purchase of common shares		$ 150,000
MGM Grand Las Vegas [Member]
Organization Disclosure [Line Items]
Revenues		2,500,000
Carrying value of real estate assets		733,000
Selling cost of real estate assets		27,000
Gain (loss) on sales of real estate assets		1,700,000
Mandalay Bay [Member]
Organization Disclosure [Line Items]
Revenues		2,100,000
Carrying value of real estate assets		2,300,000
Selling cost of real estate assets		10,000
Gain (loss) on sales of real estate assets		$ (252,000)
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%		56.00%
Number of integrated casino | Property								2
Class A shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights								one vote per share
Non-Guarantor MGP Subsidiaries [Member] | Class B shares [Member]
Organization Disclosure [Line Items]
Common stock voting rights								Class B share, is entitled to an amount of votes representing a majority of the total voting power of MGP’s shares so long as the Company and its controlled affiliates’ (excluding MGP) aggregate beneficial ownership of the combined economic interests in MGP and the Operating Partnership does not fall below 30%.
MGM Growth Properties LLC [Member]
Organization Disclosure [Line Items]
Minimum ownership percentage required for majority voting interest								30.00%
Partnership interest								56.70%
Redemptions discount percentage		3.00%
Operating partnership units, redeemed | shares	30
Cash proceeds for redemption	$ 700,000
MGM Growth Properties LLC [Member] | Maximum [Member]
Organization Disclosure [Line Items]
Cash proceeds available for redemption		$ 1,400,000
MGM Growth Properties LLC [Member] | Class A shares [Member]
Organization Disclosure [Line Items]
Issuance of operating partnership units | shares		5	13		20		3		5

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest			100.00%
Total assets	$ 37,004,775		$ 37,004,775		$ 33,876,356
Investments in and advances to unconsolidated affiliates	1,473,955		1,473,955		$ 822,366
Commissions, complimentaries and other incentives	$ 276,000	$ 687,000	$ 801,000	$ 1,900,000
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true		true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 1, 2020		Jan. 1, 2020
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true		true
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate201613Member
Food and Beverage Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	$ 7,000	14,000	$ 21,000	39,000
Entertainment Retail and Other Revenue [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Lease revenue	14,000	$ 22,000	$ 47,000	$ 67,000
Bellagio Blackstone Real Estate Income Trust [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Percentage of ownership interest			5.00%
Investments in and advances to unconsolidated affiliates	60,000		$ 60,000
MGM Growth Properties LLC [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Total assets	10,700,000		10,700,000
Total liabilities	$ 4,400,000		$ 4,400,000

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Schedule of Contract and Contract - related Liabilities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Outstanding Chip Liability [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	$ 314,570	$ 323,811
Balance at September 30	350,848	328,061
Increase / (decrease)	36,278	4,250
Loyalty Program [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	126,966	113,293
Balance at September 30	138,785	125,518
Increase / (decrease)	11,819	12,225
Customer Advances and Other [Member]
Contract And Contract Related Liabilities [Line Items]
Balance at January 1	481,095	667,285
Balance at September 30	359,877	444,573
Increase / (decrease)	$ (121,218)	$ (222,712)

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	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 1,473,955	$ 822,366
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	454,767	568,879
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	807,936	0
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Investments in and advances to unconsolidated affiliates	$ 211,252	$ 253,487

Investments in and Advances t_4

Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments in and Advances to Unconsolidated Affiliates (Parenthetical) (Detail)	Sep. 30, 2020	Dec. 31, 2019
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%

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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity Method Investments And Joint Ventures [Abstract]
Income from unconsolidated affiliates	$ 20,635	$ 36,214	$ 48,030	$ 101,967
Non-operating items from unconsolidated affiliates	(23,604)	(14,669)	(79,986)	(54,311)
Net income from unconsolidated affiliates	$ (2,969)	$ 21,545	$ (31,956)	$ 47,656

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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Income from unconsolidated affiliates	$ 20,635	$ 36,214	$ 48,030	$ 101,967
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Income from unconsolidated affiliates	(6,041)	39,317	(24,489)	105,672
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Income from unconsolidated affiliates	38,976	0	97,787	0
Other [Member]
Schedule Of Equity Method Investments [Line Items]
Income from unconsolidated affiliates	$ (12,300)	$ (3,103)	$ (25,268)	$ (3,705)

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	9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates					$ 63,578	$ 99,661
Other-than-temporary impairment charges					64,000
City Center Holdings L L C [Member]
Schedule Of Equity Method Investments [Line Items]
Distribution paid/declared	$ 101,000	$ 116,000	$ 64,000
MGP BREIT Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates				$ 23,000	$ 58,000
CityCenter Holdings LLC As Investee [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions from unconsolidated affiliates	$ 51,000	$ 58,000	$ 32,000
Distributions from unconsolidated affiliates, percentage	50.00%	50.00%	50.00%

Investments in and Advances t_8

Investments in and Advances to Unconsolidated Affiliates - Summary of Income Statement Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Net income (loss)	$ (601,971)	$ 6,104	$ (863,939)	$ 148,430
CityCenter
Schedule Of Equity Method Investments [Line Items]
Net revenues	126,673	320,352	394,989	993,215
Operating income (loss)	(29,254)	61,464	(100,491)	159,831
Net income (loss)	$ (45,267)	$ 33,082	$ (178,588)	$ 56,079

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt, Gross	$ 11,504,737	$ 11,271,706
Less: Premiums, discounts, and unamortized debt issuance costs, net	(90,007)	(102,802)
Long-term debt	11,414,730	11,168,904
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	550,000	0
Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	100,000	1,703,750
MGM China Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, Gross	654,185	667,404
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	0
5.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	675,000	1,000,000
4.625% Operating Partnership senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	800,000	0
5.25% MGM China senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Senior notes	500,000	0
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	500,000
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	1,000,000
4.5% Operating Partnership senior notes, due 2028 [Member]
Debt Instrument [Line Items]
Senior notes	350,000	350,000
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			9 Months Ended	12 Months Ended
	Jun. 30, 2020	May 31, 2020	Mar. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
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%	4.625%
Long-term debt, maturity year			2026	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
4.5% 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
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 ($)	Feb. 14, 2020	Oct. 31, 2020	Jun. 30, 2020	May 31, 2020	Mar. 31, 2020	Feb. 29, 2020	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Apr. 30, 2020
Debt Instrument [Line Items]
Repayment and termination of existing revolving facility							$ 846,815,000	$ 1,759,978,000
Loss on early retirement of debt							(126,462,000)	$ (55,932,000)
Credit facility amount							11,504,737,000		$ 11,271,706,000
Fair value of interest rate swaps designated as cash flow hedges recorded as liability							111,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as current liability							10,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as long-term liability							101,000,000		28,000,000
Fair value of interest rate swaps designated as cash flow hedges recorded as asset									7,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as liability							24,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as current liability							20,000,000
Fair value of interest rate swaps not designated as cash flow hedges recorded as long-term liability							4,000,000		3,000,000
Long-term debt, fair value							11,900,000,000		$ 12,100,000,000
Term Loan B [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notional amount							900,000
Term Loan B [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]
Debt Instrument [Line Items]
Notional amount							$ 1,900,000,000
Weighted Average fixed interest rate							1.821%
4.75% Senior Notes, Due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, principal amount		$ 750,000,000
Long-term debt, interest rate (as a percent)		4.75%
Long-term debt, maturity year		2028
6.75% senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, principal amount				$ 750,000,000
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%
Long-term debt, maturity year					2025
4.625% Operating Partnership senior notes, due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, principal amount			$ 800,000,000
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, principal amount			$ 500,000,000
Long-term debt, interest rate (as a percent)			5.25%				5.25%
Long-term debt, maturity year			2025				2025
4.625% senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)					4.625%		4.625%		4.625%
Long-term debt, maturity year					2026		2026		2026
5.5% Senior Notes, Due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, interest rate (as a percent)					5.50%
Long-term debt, maturity year					2027
Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Loss on early retirement of debt						$ (18,000,000)
Operating Partnership Senior Credit Facility [Member] | Term Loan B [Member]
Debt Instrument [Line Items]
Repayment of outstanding term loan facility						1,300,000,000
Operating Partnership Senior Credit Facility [Member] | Term Loan A [Member]
Debt Instrument [Line Items]
Repayment of outstanding term loan facility						$ 399,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Loss on early retirement of debt							$ (105,000,000)
Maximum [Member]
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount of debt purchased					$ 750,000,000
Maximum [Member] | 5.75% Senior Notes, Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount of debt purchased					325,000,000
Maximum [Member] | 4.625% senior notes, due 2026 [Member]
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount of debt purchased					100,000,000
Maximum [Member] | 5.5% Senior Notes, Due 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, aggregate principal amount of debt purchased					$ 325,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility amount							1,350,000,000
Revolving Credit Facility [Member] | Operating Partnership Senior Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn							$ 100,000,000
Debt instrument, interest rate							1.85%
Unsecured Revolving Credit Facility [Member] | MGM China Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility							$ 1,250,000,000
Unsecured Revolving Credit Facility [Member] | MGM China Second 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	$ 300,000,000
Line of credit facility, increased amount of borrowing capacity			$ 100,000,000
Unsecured Revolving Credit Facility [Member] | Maximum [Member] | MGM China Second Credit Facility [Member] | HIBOR [Member]
Debt Instrument [Line Items]
Interest rate margin (as a percent)							2.75%
Unsecured Revolving Credit Facility [Member] | Minimum [Member] | MGM China Second Credit Facility [Member] | HIBOR [Member]
Debt Instrument [Line Items]
Interest rate margin (as a percent)							1.625%
Term Loan [Member] | MGM China Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility drawn							$ 654,000,000
Debt instrument, weighted average interest rate							3.20%
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							$ 550,000,000
Debt instrument, interest rate							2.75%
Senior Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Liquidity level including unrestricted cash, cash equivalents										$ 600,000,000
Senior Credit Facility [Member] | Revolving Credit Facility [Member] | MGP BREIT Venture [Member]
Debt Instrument [Line Items]
Repayment and termination of existing revolving facility	$ 1,500,000,000
Loss on early retirement of debt	(4,000,000)
Senior Credit Facility [Member] | Unsecured Revolving Credit Facility [Member] | MGP BREIT Venture [Member]
Debt Instrument [Line Items]
Line of credit facility	$ 1,500,000,000
Credit facility, maturity date	2025-02

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Line Items]
Effective income tax rate	(11.30%)	(620.80%)	(8.90%)	33.90%
Income tax expense (benefit)	$ (76,734,000)	$ (7,276,000)	$ (84,668,000)	$ 75,969,000
MGM Grand Paradise SA [Member]
Income Tax Disclosure [Line Items]
Complementary tax rate on distributions of gaming profits (as a percent)			12.00%
Accrued amount	0		$ 0
Macau [Member]
Income Tax Disclosure [Line Items]
Increase in tax credit carry forward valuation allowance			25,000,000
Increase in foreign tax credit carry forward valuation allowance	$ 1,000,000		28,000,000
Income tax expense (benefit)			$ (6,000,000)
Special gaming tax rate			35.00%
Macau [Member] | MGM Grand Paradise SA [Member]
Income Tax Disclosure [Line Items]
Complementary tax rate on distributions of gaming profits (as a percent)			12.00%
Macau [Member] | MGP BREIT Venture [Member]
Income Tax Disclosure [Line Items]
Income tax expense (benefit)			$ 349,000,000

Leases - Additional Information

Leases - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)Renewal_period
Blackstone Real Estate Income Trust [Member] | Bellagio [Member]
Leases [Line Items]
Initial annual rent	$ 245
Lease, initial annual rent, beginning period	Nov. 15, 2019
Lease, initial annual rent, ending period	Nov. 30, 2020
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%
MGP BREIT Venture [Member] | Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Initial annual rent	$ 292
Lease, initial annual rent, beginning period	Feb. 14, 2020
Lease, initial annual rent, ending period	Feb. 28, 2021
Lease agreement Initial lease term	30 years
Number of renewal periods, exercisable at option | Renewal_period	2
Lease agreement renewal period	10 years
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%
Percentage of expected lease term of economic useful life	75.00%
Percentage Of present value of future minimum lease payments	90.00%

Leases - Schedule of Components

Leases - Schedule of Components of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost, primarily classified within "General and administrative"	$ 199,166	$ 25,520	$ 551,807	$ 75,777
Interest expense	(5,990)	208	(19,796)	621
Amortization expense	17,851	2,277	52,495	7,247
Total finance lease costs	$ 11,861	$ 2,485	$ 32,699	$ 7,868

Leases - Schedule of Componen_2

Leases - Schedule of Components of Lease Costs (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Line Items]
Operating lease cost	$ 199,166	$ 25,520	$ 551,807	$ 75,777
Bellagio [Member]
Leases [Line Items]
Operating lease cost	83,000		248,000
Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Operating lease cost	$ 99,000		$ 248,000

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating leases
Operating lease right-of-use assets, net	$ 8,330,530	$ 4,392,481
Operating lease liabilities - current, classified within "Other accrued liabilities"	$ 35,651	$ 67,473
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Operating lease liabilities - long-term	$ 8,380,341	$ 4,277,970
Total operating lease liabilities	8,415,992	4,345,443
Finance leases
Finance lease right-of-use assets, net classified within "Property and equipment, net"	$ 217,321	$ 93,437
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet	us-gaap:PropertyPlantAndEquipmentNet
Finance lease liabilities - current, classified within "Other accrued liabilities"	$ 79,087	$ 27,975
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesCurrent	us-gaap:OtherLiabilitiesCurrent
Finance lease liabilities - long-term, classified within "Other long-term obligations"	$ 151,472	$ 67,182
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLongTermDebt	us-gaap:OtherLongTermDebt
Total finance lease liabilities	$ 230,559	$ 95,157
Weighted-average remaining lease term (years)
Operating leases	30 years	31 years
Finance leases	3 years	4 years
Weighted-average discount rate (%)
Operating leases	8.00%	7.00%
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	Sep. 30, 2020	Dec. 31, 2019
Leases [Line Items]
Operating lease right-of-use assets, net	$ 8,330,530	$ 4,392,481
Operating lease liabilities - long-term	8,380,341	4,277,970
Bellagio [Member]
Leases [Line Items]
Operating lease right-of-use assets, net	3,700,000	3,700,000
Operating lease liabilities - long-term	3,800,000	3,700,000
Mandalay Bay and MGM Grand Las Vegas [Member]
Leases [Line Items]
Operating lease right-of-use assets, net	4,100,000	0
Operating lease liabilities - long-term	$ 4,100,000	$ 0

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	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating cash outflows from operating leases	$ 421,932	$ 66,562
Operating cash outflows from finance leases	1,741	621
Financing cash outflows from finance leases	19,514	5,533
ROU assets obtained in exchange for new lease liabilities
Operating leases	4,120,312	45,387
Finance leases	$ 175,446	$ 4,215

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Leases, 2020(excluding the nine months ended September 30, 2020)	$ 152,226
Operating Leases, 2021	610,886
Operating Leases, 2022	615,855
Operating Leases, 2023	625,365
Operating Leases, 2024	635,755
Operating Leases, Thereafter	20,445,881
Operating Leases, Total future minimum lease payments	23,085,968
Operating Leases, Less: Amount of lease payments representing interest	(14,669,976)
Total operating lease liabilities	8,415,992	$ 4,345,443
Less: Current portion	(35,651)	(67,473)
Operating lease liabilities	8,380,341	4,277,970
Finance Leases, 2020(excluding the nine months ended September 30, 2020)	28,720
Finance Leases, 2021	73,951
Finance Leases, 2022	72,240
Finance Leases, 2023	63,718
Finance Leases, 2024	1,034
Finance Leases, Thereafter	517
Finance Leases, Total future minimum lease payments	240,180
Finance Leases, Less: Amount of lease payments representing interest	(9,621)
Total finance lease liabilities	230,559	95,157
Less: Current portion	(79,087)	(27,975)
Long-term portion of lease liabilities	$ 151,472	$ 67,182

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	May 31, 2019
Loss Contingencies [Line Items]
Settlement amount			$ 800,000,000
Insurance receivable	$ 751,000,000		751,000,000
Expense	0	$ 0	49,000,000	$ 0
Blackstone Real Estate Income Trust [Member]
Loss Contingencies [Line Items]
Guarantee obligation amount	3,010,000,000		$ 3,010,000,000
Guarantee term			Bellagio BREIT Venture 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		$ 3,000,000,000
Guarantee term			MGP BREIT Venture 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.   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		$ 0
Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Credit facility outstanding	28,000,000		28,000,000
Letters of credit [Member] | MGP Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Line of credit facility	75,000,000		75,000,000
Letters of credit [Member] | Senior Credit Facility [Member]
Loss Contingencies [Line Items]
Line of credit facility	$ 850,000,000		$ 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 guarantee. In connection with the extension of the expiration of the gaming subconcession to June 2022, MGM Grand Paradise provided a bank guarantee in an amount of approximately $103 million (when giving effect to foreign currency exchange rate fluctuations) to the government of Macau in May 2019 to warrant the fulfillment of an existing commitment of labor liabilities upon the expiration of the gaming subconcession in June 2022.
Corporate Expense [Member]
Loss Contingencies [Line Items]
Expense			$ 49,000,000

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		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator:
Net income (loss) attributable to MGM Resorts International	$ (534,731)	$ (37,133)	$ (585,119)	$ 37,569
Adjustment related to redeemable noncontrolling interests	1,777	(3,074)	42,028	(5,906)
Net income (loss) available to common stockholders - basic	(532,954)	(40,207)	(543,091)	31,663
Potentially dilutive effect due to MGP and MGM China stock compensation plans	(25)	(30)	(21)	(111)
Net income (loss) attributable to common stockholders - diluted	$ (532,979)	$ (40,237)	$ (543,112)	$ 31,552
Denominator:
Weighted-average common shares outstanding - basic	493,517	518,983	494,126	528,429
Potential dilution from share-based awards	0	0	0	3,444
Weighted-average common and common equivalent shares - diluted	493,517	518,983	494,126	531,873
Antidilutive share-based awards excluded from the calculation of diluted earnings per share	6,183	1,108	5,143	1,816

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	Oct. 29, 2020	May 18, 2020	Feb. 14, 2020	Feb. 13, 2020	Mar. 07, 2019	Feb. 29, 2020	Apr. 30, 2019	Jan. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	May 31, 2018
Stockholders Equity Note [Line Items]
Cash proceeds for redemption											$ 3,205,000
Common stock repurchases, value										$ 356,982,000	353,720,000	$ 638,815,000
Common Stock [Member]
Stockholders Equity Note [Line Items]
Cash proceeds for redemption											$ 0
Common stock repurchases, Shares										12,599	10,861	23,604
Common stock repurchases, value										$ 126,000	$ 109,000	$ 236,000
Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Authorized amount of stock repurchase									$ 2,000,000,000		2,000,000,000		$ 2,000,000,000
Repurchase of common stock, remaining amount									4,000,000		4,000,000
Share Repurchase Program Two [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Authorized amount of stock repurchase						$ 3,000,000,000			3,000,000,000		3,000,000,000
Repurchase of common stock, remaining amount									$ 3,000,000,000		$ 3,000,000,000
Share Repurchase Program [Member] | Common Stock [Member]
Stockholders Equity Note [Line Items]
Common stock repurchases, Shares									0	13,000	11,000	24,000
Stock repurchased, average price per share										$ 28.33	$ 32.57	$ 27.06
Common stock repurchases, value										$ 357,000,000	$ 354,000,000	$ 639,000,000
Subsequent Event [Member]
Stockholders Equity Note [Line Items]
Dividend declared date	Oct. 29, 2020
Dividends declared per share	$ 0.0025
Dividend paid date	Dec. 15, 2020
Dividend record date	Dec. 10, 2020
MGP BREIT Venture [Member]
Stockholders Equity Note [Line Items]
Issuance of operating partnership units			3,000			3,000
Northfield Operating Company
Stockholders Equity Note [Line Items]
Issuance of operating partnership units							9,000
MGM Growth Properties LLC [Member]
Stockholders Equity Note [Line Items]
Operating partnership units, redeemed		30,000
Cash proceeds for redemption		$ 700,000,000
MGM Growth Properties LLC [Member] | Class A shares [Member]
Stockholders Equity Note [Line Items]
Issuance of operating partnership units			5,000	13,000				20,000		3,000		5,000
New issuance of shares			5,000					20,000		3,000		5,000
Number of forward shares settled				13,000
MGM Growth Properties LLC [Member] | Operating Partnership
Stockholders Equity Note [Line Items]
Partnership interest			60.30%	61.20%	69.80%	60.60%	68.80%	74.60%	56.70%	67.70%	56.70%	67.70%
Operating partnership units, redeemed		30,000
Cash proceeds for redemption		$ 700,000,000
MGM Growth Properties LLC [Member] | MGP [Member] | Class A shares [Member]
Stockholders Equity Note [Line Items]
Partnership interest								69.70%
MGM Growth Properties LLC [Member] | Empire City [Member]
Stockholders Equity Note [Line Items]
Issuance of operating partnership units								13,000
MGM Growth Properties LLC [Member] | Park MGM [Member]
Stockholders Equity Note [Line Items]
Issuance of operating partnership units					1,000

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Loss Attributable to MGM Resorts International by Component (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 12,348,782	$ 10,954,721	$ 12,662,919	$ 10,469,791
Other comprehensive income (loss)	90	(35,106)	(61,485)	(60,752)
Other changes in accumulated other comprehensive income (loss):
Ending Balance	11,702,662	10,520,618	11,702,662	10,520,618
MGM Growth Properties LLC [Member] | Class A Shareholders [Member]
Other changes in accumulated other comprehensive income (loss):
Share issuances		$ 82,737	507,551	$ 673,779
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	13,182		(2,747)
Other comprehensive income (loss) before reclassifications	538		29,163
Amounts reclassified from accumulated other comprehensive loss to interest expense	0		0
Other comprehensive income (loss)	538		29,163
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units			0
Other			0
Changes in accumulated other comprehensive income (loss):	538		29,163
Other comprehensive income attributable to noncontrolling interest	(114)		(12,810)
Ending Balance	13,606		13,606
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
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest | MGP BREIT Venture [Member]
Other changes in accumulated other comprehensive income (loss):
Acquisition transaction			0
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(60,487)		(10,829)
Other comprehensive income (loss) before reclassifications	(6,852)		(104,355)
Amounts reclassified from accumulated other comprehensive loss to interest expense	6,404		13,707
Other comprehensive income (loss)	(448)		(90,648)
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units			0
Other			0
Changes in accumulated other comprehensive income (loss):	(448)		(90,648)
Other comprehensive income attributable to noncontrolling interest	(316)		40,226
Ending Balance	(61,251)		(61,251)
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
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest | MGP BREIT Venture [Member]
Other changes in accumulated other comprehensive income (loss):
Acquisition transaction			0
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	8,275		3,374
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):
Redemption of Operating Partnership units			4,772
Other			(458)
Changes in accumulated other comprehensive income (loss):	0		4,901
Other comprehensive income attributable to noncontrolling interest	0		0
Ending Balance	8,275		8,275
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			646
Accumulated Other Adjustment Including Portion Attributable To Noncontrolling Interest | MGP BREIT Venture [Member]
Other changes in accumulated other comprehensive income (loss):
Acquisition transaction			(59)
AOCI Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(39,030)		(10,202)
Other comprehensive income (loss) before reclassifications	(6,314)		(75,192)
Amounts reclassified from accumulated other comprehensive loss to interest expense	6,404		13,707
Other comprehensive income (loss)	90		(61,485)
Other changes in accumulated other comprehensive income (loss):
Redemption of Operating Partnership units			4,772
Other			(458)
Changes in accumulated other comprehensive income (loss):	90		(56,584)
Other comprehensive income attributable to noncontrolling interest	(430)		27,416
Ending Balance	$ (39,370)		(39,370)
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			646
AOCI Including Portion Attributable to Noncontrolling Interest | MGP BREIT Venture [Member]
Other changes in accumulated other comprehensive income (loss):
Acquisition transaction			$ (59)

Segment Information - Schedule

Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues
Revenues	$ 1,125,920	$ 3,314,382	$ 3,668,546	$ 9,714,536
Adjusted Property EBITDAR	64,413	894,395	128,922	2,554,584
Other operating income (expense)
Preopening and start-up expenses	(11)	(925)	(51)	(5,091)
Property transactions, net	(4,116)	(249,858)	(85,440)	(264,424)
Gain on REIT transactions, net	0	0	1,491,945	0
Depreciation and amortization	(294,363)	(322,009)	(911,859)	(973,211)
October 1 litigation settlement	0	0	(49,000)	0
Restructuring	0	(2,491)	(19,882)	(86,579)
Triple-net operating lease and ground lease rent expense	(189,602)	(8,024)	(521,087)	(24,309)
Income from unconsolidated affiliates related to real estate ventures	41,687	0	106,756	0
Operating income (loss)	(495,182)	238,381	(278,866)	980,126
Non-operating income (expense)
Interest expense, net of amounts capitalized	(173,808)	(215,503)	(487,701)	(647,452)
Non-operating items from unconsolidated affiliates	(23,604)	(14,669)	(79,986)	(54,311)
Other, net	13,889	(9,381)	(102,054)	(53,964)
Total non-operating income (expense)	(183,523)	(239,553)	(669,741)	(755,727)
Income (loss) before income taxes	(678,705)	(1,172)	(948,607)	224,399
Benefit (provision) for income taxes	76,734	7,276	84,668	(75,969)
Net income (loss)	(601,971)	6,104	(863,939)	148,430
Less: Net (income) loss attributable to noncontrolling interests	67,240	(43,237)	278,820	(110,861)
Net income (loss) attributable to MGM Resorts International	(534,731)	(37,133)	(585,119)	37,569
Chief Executive Officer [Member]
Other operating income (expense)
CEO transition expense	0	0	(44,401)	0
Reportable segments [Member]
Revenues
Revenues	1,085,111	3,180,221	3,489,737	9,229,944
Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	481,418	1,507,448	1,766,035	4,401,980
Adjusted Property EBITDAR	15,125	441,281	178,277	1,263,271
Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	556,826	935,018	1,371,750	2,649,916
Adjusted Property EBITDAR	145,734	269,125	185,369	741,710
Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	46,867	737,755	351,952	2,178,048
Adjusted Property EBITDAR	(96,446)	183,989	(234,724)	549,603
Corporate and other [Member]
Revenues
Revenues	40,809	134,161	178,809	484,592
Other operating income (expense)
Corporate and other	(113,190)	(72,707)	(374,769)	(220,844)
Casino [Member]
Revenues
Revenues	690,218	1,663,049	1,907,893	4,887,707
Casino [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	189,358	336,262	527,059	969,149
Casino [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	464,789	660,748	1,078,596	1,888,852
Casino [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	35,297	662,838	298,995	1,959,582
Rooms [Member]
Revenues
Revenues	175,450	595,636	641,024	1,756,354
Rooms [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	137,869	469,145	526,838	1,407,733
Rooms [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	34,782	90,197	94,842	243,449
Rooms [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	2,800	36,294	19,344	105,171
Food and Beverage [Member]
Revenues
Revenues	126,317	560,200	552,797	1,624,973
Food and Beverage [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	81,429	401,362	391,218	1,156,657
Food and Beverage [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	38,646	126,625	138,052	368,374
Food and Beverage [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	6,240	32,214	23,451	93,836
Entertainment, Retail and Other [Member]
Revenues
Revenues	101,618	387,596	420,132	1,114,708
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Las Vegas Strip Resorts [Member]
Revenues
Revenues	72,762	300,679	320,920	868,441
Entertainment, Retail and Other [Member] | Reportable segments [Member] | Regional Operations [Member]
Revenues
Revenues	18,609	57,448	60,260	149,241
Entertainment, Retail and Other [Member] | Reportable segments [Member] | MGM China [Member]
Revenues
Revenues	$ 2,530	$ 6,409	$ 10,162	$ 19,459

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	Apr. 01, 2020	Feb. 14, 2020	Mar. 31, 2020	Sep. 30, 2020
Master Lease
Related Party Transaction [Line Items]
Decrease in annual rent payment		$ 133
Annual rent payments under master lease of properties	$ 828	$ 813	$ 813
Percentage of fixed annual rent	2.00%
Real Estate Assets and Leases [Member] | Blackstone Real Estate Income Trust [Member] | Bellagio [Member]
Related Party Transaction [Line Items]
Percentage ownership interest				5.00%
MGP [Member] | Blackstone Real Estate Income Trust [Member] | Lease Agreements [Member]
Related Party Transaction [Line Items]
Percentage ownership interest				50.10%