Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Revenues	$ 5,162,082	$ 12,899,672	$ 11,763,096
Expenses
General and administrative	2,122,333	2,101,217	1,764,638
Corporate expense	460,148	464,642	419,204
Preopening and start-up expenses	84	7,175	151,392
Property transactions, net	93,567	275,802	9,147
Gain on REIT transactions, net	(1,491,945)	(2,677,996)	0
Depreciation and amortization	1,210,556	1,304,649	1,178,044
Total expenses	5,847,454	9,078,978	10,441,300
Income from unconsolidated affiliates	42,938	119,521	147,690
Operating income (loss)	(642,434)	3,940,215	1,469,486
Non-operating income (expense)
Interest expense, net of amounts capitalized	(676,380)	(847,932)	(769,513)
Non-operating items from unconsolidated affiliates	(103,304)	(62,296)	(47,827)
Other, net	(89,361)	(183,262)	(18,140)
Total non-operating income (expense)	(869,045)	(1,093,490)	(835,480)
Income (loss) before income taxes	(1,511,479)	2,846,725	634,006
Benefit (provision) for income taxes	191,572	(632,345)	(50,112)
Net income (loss)	(1,319,907)	2,214,380	583,894
Less: Net (income) loss attributable to noncontrolling interests	287,183	(165,234)	(117,122)
Net income (loss) attributable to MGM Resorts International	$ (1,032,724)	$ 2,049,146	$ 466,772
Earnings (loss) per share
Basic	$ (2.02)	$ 3.90	$ 0.82
Diluted	$ (2.02)	$ 3.88	$ 0.81
Weighted average common shares outstanding
Basic	494,152	524,173	544,253
Diluted	494,152	527,645	549,536
Casino [Member]
Revenues
Revenues	$ 2,871,720	$ 6,517,759	$ 5,753,150
Expenses
Expenses	1,701,783	3,623,899	3,199,775
Rooms [Member]
Revenues
Revenues	830,382	2,322,579	2,212,573
Expenses
Expenses	419,156	829,677	791,761
Food and Beverage [Member]
Revenues
Revenues	696,040	2,145,247	1,959,021
Expenses
Expenses	674,118	1,661,626	1,501,868
Entertainment, Retail and Other [Member]
Revenues
Revenues	518,991	1,477,200	1,412,860
Expenses
Expenses	412,705	1,051,400	999,979
Reimbursed Costs [Member]
Revenues
Revenues	244,949	436,887	425,492
Expenses
Expenses	$ 244,949	$ 436,887	$ 425,492

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.