Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Other Intangible Assets

Goodwill and other intangible assets consisted of the following:  

	December 31,
	2015			2014
Goodwill:	(In thousands)
Wholly owned domestic resorts	$	70,975		$	70,975
MGM China		1,359,792			2,826,135
	$	1,430,767		$	2,897,110
Indefinite-lived intangible assets:
Detroit development rights	$	98,098		$	98,098
Trademarks, license rights and other		229,022			232,123
Total indefinite-lived intangible assets		327,120			330,221
Finite-lived intangible assets:
MGM Grand Paradise gaming subconcession		4,515,867			4,513,101
Less: Accumulated amortization		(858,531	)		(692,047	)
		3,657,336			3,821,054
MGM Macau land concession		84,769			84,717
Less: Accumulated amortization		(19,554	)		(15,272	)
		65,215			69,445
MGM China customer lists		129,025			128,946
Less: Accumulated amortization		(126,003	)		(116,664	)
		3,022			12,282
MGM China gaming promoter relationships		180,635			180,524
Less: Accumulated amortization		(180,635	)		(161,467	)
		—			19,057
Maryland license, Massachusetts license and other intangible assets		136,127			136,827
Less: Accumulated amortization		(24,039	)		(24,030	)
		112,088			112,797
Total finite-lived intangible assets, net		3,837,661			4,034,635
Total other intangible assets, net	$	4,164,781		$	4,364,856

Schedule of Gross Carrying Value of Goodwill and Related Cumulative Impairment Losses

The following table summarizes our gross carrying value of goodwill and related cumulative impairment losses as of December 31, 2015:

	Gross Carrying Value		Cumulative Impairment Losses			Goodwill, net
Goodwill, net by Reportable Segment:	(In thousands)
Wholly Owned Domestic Resorts	$	1,239,063	$	(1,168,088	)	$	70,975
MGM China		2,827,783		(1,467,991	)		1,359,792
Balance, December 31, 2015	$	4,066,846	$	(2,636,079	)	$	1,430,767

Schedule of Estimated Future Amortization

  Estimated future amortization is as follows:

Years ending December 31,	(In thousands)
2016	$	174,424
2017		172,482
2018		173,426
2019		178,149
2020		178,149
Thereafter		2,961,031
	$	3,837,661