Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Income Statements Captions [Line Items]
Net revenues	$ 2,708,179	$ 2,209,686
Equity in subsidiaries' earnings	0	0
Expenses
Casino and hotel operations	1,522,162	1,301,713
General and administrative	388,835	308,543
Corporate expense	73,173	71,248
Preopening and start-up expenses	15,066	21,960
Property transactions, net	1,696	5,131
Depreciation and amortization	249,769	199,839
Total expenses	2,250,701	1,908,434
Income (loss) from unconsolidated affiliates	39,703	14,702
Operating income	497,181	315,954
Interest expense, net of amounts capitalized	(174,059)	(184,669)
Other, net	(7,738)	(18,777)
Income before income taxes	315,384	112,508
Provision for income taxes	(62,375)	(21,310)
Net income	253,009	91,198
Less: Net income attributable to noncontrolling interests	(46,162)	(24,399)
Net income attributable to MGM Resorts International	206,847	66,799
Net income (loss)	253,009	91,198
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(12,933)	(4,765)
Unrealized gain (loss) on cash flow hedges	(634)
Other comprehensive loss	(13,567)	(4,765)
Comprehensive income	239,442	86,433
Less: Comprehensive income attributable to noncontrolling interests	(40,431)	(22,034)
Comprehensive income attributable to MGM Resorts International	199,011	64,399
Reportable Legal Entities [Member] | Parent [Member]
Condensed Income Statements Captions [Line Items]
Net revenues	0	0
Equity in subsidiaries' earnings	402,740	286,193
Expenses
Casino and hotel operations	2,509	2,122
General and administrative	1,982	1,613
Corporate expense	23,393	34,556
Preopening and start-up expenses	0	0
Property transactions, net	0	0
Depreciation and amortization	0	0
Total expenses	27,884	38,291
Income (loss) from unconsolidated affiliates	0	0
Operating income	374,856	247,902
Interest expense, net of amounts capitalized	(123,356)	(175,694)
Other, net	14,086	13,874
Income before income taxes	265,586	86,082
Provision for income taxes	(58,739)	(19,283)
Net income	206,847	66,799
Less: Net income attributable to noncontrolling interests	0	0
Net income attributable to MGM Resorts International	206,847	66,799
Net income (loss)	206,847	66,799
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(7,352)	(2,400)
Unrealized gain (loss) on cash flow hedges	(484)
Other comprehensive loss	(7,836)	(2,400)
Comprehensive income	199,011	64,399
Less: Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to MGM Resorts International	199,011	64,399
Reportable Legal Entities [Member] | Guarantor Subsidiaries [Member]
Condensed Income Statements Captions [Line Items]
Net revenues	1,889,279	1,600,525
Equity in subsidiaries' earnings	52,942	41,311
Expenses
Casino and hotel operations	1,015,519	904,060
General and administrative	298,248	241,843
Corporate expense	47,292	36,543
Preopening and start-up expenses	644	3,446
Property transactions, net	1,547	4,267
Depreciation and amortization	162,699	85,405
Total expenses	1,525,949	1,275,564
Income (loss) from unconsolidated affiliates	39,784	14,790
Operating income	456,056	381,062
Interest expense, net of amounts capitalized	(458)	(195)
Other, net	(108,494)	(19,536)
Income before income taxes	347,104	361,331
Provision for income taxes	0	(3,719)
Net income	347,104	357,612
Less: Net income attributable to noncontrolling interests	0	0
Net income attributable to MGM Resorts International	347,104	357,612
Net income (loss)	347,104	357,612
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(7,352)	(2,400)
Unrealized gain (loss) on cash flow hedges	0
Other comprehensive loss	(7,352)	(2,400)
Comprehensive income	339,752	355,212
Less: Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to MGM Resorts International	339,752	355,212
Reportable Legal Entities [Member] | Non-Guarantor MGP Subsidiaries [Member]
Condensed Income Statements Captions [Line Items]
Net revenues	183,899	0
Equity in subsidiaries' earnings	0	0
Expenses
Casino and hotel operations	0	0
General and administrative	20,487	15,620
Corporate expense	2,851	0
Preopening and start-up expenses	0	0
Property transactions, net	6,855	874
Depreciation and amortization	61,684	51,476
Total expenses	91,877	67,970
Income (loss) from unconsolidated affiliates	0	0
Operating income	92,022	(67,970)
Interest expense, net of amounts capitalized	(44,636)	0
Other, net	544	0
Income before income taxes	47,930	(67,970)
Provision for income taxes	(1,238)	0
Net income	46,692	(67,970)
Less: Net income attributable to noncontrolling interests	(11,348)	0
Net income attributable to MGM Resorts International	35,344	(67,970)
Net income (loss)	46,692	(67,970)
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	0	0
Unrealized gain (loss) on cash flow hedges	(634)
Other comprehensive loss	(634)	0
Comprehensive income	46,058	(67,970)
Less: Comprehensive income attributable to noncontrolling interests	(11,198)	0
Comprehensive income attributable to MGM Resorts International	34,860	(67,970)
Reportable Legal Entities [Member] | Non-Guarantor Other Subsidiaries [Member]
Condensed Income Statements Captions [Line Items]
Net revenues	819,815	610,009
Equity in subsidiaries' earnings	0	0
Expenses
Casino and hotel operations	505,048	396,379
General and administrative	88,605	49,467
Corporate expense	(192)	149
Preopening and start-up expenses	14,422	18,514
Property transactions, net	149	(10)
Depreciation and amortization	87,070	62,958
Total expenses	695,102	527,457
Income (loss) from unconsolidated affiliates	(81)	(88)
Operating income	124,632	82,464
Interest expense, net of amounts capitalized	(5,609)	(8,780)
Other, net	(29,597)	(13,115)
Income before income taxes	89,426	60,569
Provision for income taxes	(2,398)	1,692
Net income	87,028	62,261
Less: Net income attributable to noncontrolling interests	(34,814)	(24,399)
Net income attributable to MGM Resorts International	52,214	37,862
Net income (loss)	87,028	62,261
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(12,933)	(4,765)
Unrealized gain (loss) on cash flow hedges	0
Other comprehensive loss	(12,933)	(4,765)
Comprehensive income	74,095	57,496
Less: Comprehensive income attributable to noncontrolling interests	(29,233)	(22,034)
Comprehensive income attributable to MGM Resorts International	44,862	35,462
Elimination [Member]
Condensed Income Statements Captions [Line Items]
Net revenues	(184,814)	(848)
Equity in subsidiaries' earnings	(455,682)	(327,504)
Expenses
Casino and hotel operations	(914)	(848)
General and administrative	(20,487)	0
Corporate expense	(171)	0
Preopening and start-up expenses	0	0
Property transactions, net	(6,855)	0
Depreciation and amortization	(61,684)	0
Total expenses	(90,111)	(848)
Income (loss) from unconsolidated affiliates	0	0
Operating income	(550,385)	(327,504)
Interest expense, net of amounts capitalized	0	0
Other, net	115,723	0
Income before income taxes	(434,662)	(327,504)
Provision for income taxes	0	0
Net income	(434,662)	(327,504)
Less: Net income attributable to noncontrolling interests	0	0
Net income attributable to MGM Resorts International	(434,662)	(327,504)
Net income (loss)	(434,662)	(327,504)
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	14,704	4,800
Unrealized gain (loss) on cash flow hedges	484
Other comprehensive loss	15,188	4,800
Comprehensive income	(419,474)	(322,704)
Less: Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to MGM Resorts International	$ (419,474)	$ (322,704)