Earnings before interest and other non-operating income (expense), taxes, depreciation and amortization, preopening and start-up expenses, and property transactions, net. Also excludes corporate expense and stock compensation expense, which are not allocated to each property.

No definition available.

Segment Information - Schedule of Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Revenues	$ 3,185,136	$ 3,314,382	$ 3,223,243	$ 3,176,911	$ 3,052,862	$ 3,029,302	$ 2,858,695	$ 2,822,237	$ 12,899,672	$ 11,763,096	$ 10,797,479
Other operating income (expense)
NV Energy exit expense									0	0	40,629
Preopening and start-up expenses									(7,175)	(151,392)	(118,475)
Property transactions, net									(275,802)	(9,147)	(50,279)
Gain on Bellagio transaction									2,677,996	0	0
Depreciation and amortization									(1,304,649)	(1,178,044)	(993,480)
Restructuring									(92,139)	0	0
Triple net operating lease and ground lease rent expense									(74,656)	(29,633)	(23,471)
Income from unconsolidated affiliates related to investments in REITs									544	0	0
Operating income	2,960,089	238,381	371,485	370,260	335,751	410,903	363,075	359,757	3,940,215	1,469,486	1,712,527
Non-operating income (expense)
Interest expense, net of amounts capitalized									(847,932)	(769,513)	(668,745)
Non-operating items from unconsolidated affiliates									(62,296)	(47,827)	(34,751)
Other, net									(183,262)	(18,140)	(48,241)
Total non-operating income (expense)									(1,093,490)	(835,480)	(751,737)
Income before income taxes									2,846,725	634,006	960,790
Benefit (provision) for income taxes					(92,000)			72,000	(632,345)	(50,112)	1,127,394
Net income	2,065,950	6,104	76,169	66,157	5,760	171,410	140,423	266,301	2,214,380	583,894	2,088,184
Less: Net income attributable to noncontrolling interests									(165,234)	(117,122)	(136,132)
Net income attributable to MGM Resorts International	$ 2,011,577	$ (37,133)	$ 43,405	$ 31,297	$ (23,327)	$ 142,878	$ 123,777	$ 223,444	2,049,146	466,772	1,952,052
Capital expenditures									739,006	1,486,843	1,864,082
Reportable segments [Member]
Revenues
Revenues									12,286,257	11,101,150	10,314,003
Adjusted Property EBITDAR									3,347,717	3,062,502	3,071,511
Non-operating income (expense)
Capital expenditures									618,986	964,121	1,409,957
Reportable segments [Member] \| Las Vegas Strip Resorts [Member]
Revenues
Revenues									5,831,051	5,716,672	5,746,123
Adjusted Property EBITDAR									1,643,122	1,706,315	1,781,390
Non-operating income (expense)
Capital expenditures									285,863	501,044	419,983
Reportable segments [Member] \| MGM China [Member]
Revenues
Revenues									2,905,422	2,449,957	1,858,160
Adjusted Property EBITDAR									734,729	574,333	535,524
Non-operating income (expense)
Capital expenditures									145,634	390,212	923,346
Reportable segments [Member] \| Regional Operations [Member]
Revenues
Revenues									3,549,784	2,934,521	2,709,720
Adjusted Property EBITDAR									969,866	781,854	754,597
Non-operating income (expense)
Capital expenditures									187,489	72,865	66,628
Corporate and other [Member]
Revenues
Revenues									613,415	661,946	483,476
Other operating income (expense)
Corporate and other									(331,621)	(224,800)	(213,908)
Non-operating income (expense)
Capital expenditures									120,020	537,347	469,053
Consolidation, Eliminations [Member]
Non-operating income (expense)
Capital expenditures										(14,625)	(14,928)
Casino [Member]
Revenues
Revenues									6,517,759	5,753,150	5,016,426
Casino [Member] \| Reportable segments [Member] \| Las Vegas Strip Resorts [Member]
Revenues
Revenues									1,296,170	1,407,733	1,436,830
Casino [Member] \| Reportable segments [Member] \| MGM China [Member]
Revenues
Revenues									2,609,806	2,195,144	1,741,635
Casino [Member] \| Reportable segments [Member] \| Regional Operations [Member]
Revenues
Revenues									2,537,780	2,026,925	1,834,803
Rooms [Member]
Revenues
Revenues									2,322,579	2,212,573	2,152,741
Rooms [Member] \| Reportable segments [Member] \| Las Vegas Strip Resorts [Member]
Revenues
Revenues									1,863,521	1,776,029	1,778,869
Rooms [Member] \| Reportable segments [Member] \| MGM China [Member]
Revenues
Revenues									142,306	118,527	54,824
Rooms [Member] \| Reportable segments [Member] \| Regional Operations [Member]
Revenues
Revenues									316,753	318,017	319,049
Food and Beverage [Member]
Revenues
Revenues									2,145,247	1,959,021	1,871,969
Food and Beverage [Member] \| Reportable segments [Member] \| Las Vegas Strip Resorts [Member]
Revenues
Revenues									1,517,745	1,402,378	1,410,496
Food and Beverage [Member] \| Reportable segments [Member] \| MGM China [Member]
Revenues
Revenues									127,152	114,862	51,330
Food and Beverage [Member] \| Reportable segments [Member] \| Regional Operations [Member]
Revenues
Revenues									494,243	428,934	410,143
Entertainment, Retail and Other [Member]
Revenues
Revenues									1,477,200	1,412,860	1,354,301
Entertainment, Retail and Other [Member] \| Reportable segments [Member] \| Las Vegas Strip Resorts [Member]
Revenues
Revenues									1,153,615	1,130,532	1,119,928
Entertainment, Retail and Other [Member] \| Reportable segments [Member] \| MGM China [Member]
Revenues
Revenues									26,158	21,424	10,371
Entertainment, Retail and Other [Member] \| Reportable segments [Member] \| Regional Operations [Member]
Revenues
Revenues									$ 201,008	$ 160,645	$ 145,725