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

Corporate income expense.

No definition available.

Name:	mgm_CorporateIncomeExpense
Namespace Prefix:	mgm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the entity's proportionate share for the period of the operating income (loss) of its investees (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied, excluding pre-opening expenses. Such amount typically reflects adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment.

+ References

No definition available.