Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue, Net	$ 347,951	$ 323,597	$ 337,818	$ 342,769	$ 333,736	$ 309,656	$ 321,747	$ 326,477	$ 1,352,135	$ 1,291,616	$ 1,256,137
Adjusted EBITDAM									472,231	420,689	385,449
Preopening									(1,165)	(640)	(222)
Depreciation and amortization									(137,474)	(127,766)	(128,754)
Management fee expense									(52,745)	(48,872)	(46,145)
Share-based Compensation									(2,613)	(2,790)	(3,416)
Donation to UNLV									(2,500)	0	0
Asset impairment									(6,301)	(11,739)	(1,183)
Write-Downs and Other Charges, Net.									(7,662)	(20,951)	(11,881)
Adjusted EBITDAM attributable to MPM noncontrolling interest									14,192	13,424	13,274
Other									537	476	236
Operating (loss) income and earnings (losses) from subsidiaries and joint ventures									275,426	220,879	206,886
Interest expense, net									(142,921)	(150,995)	(164,622)
Loss on extinguishment of debt									0	(4,132)	(146,787)
Gain on Native American development									0	49,074	16,974
Change in fair value of derivative instruments									(1)	(90)	(291)
Income (loss) from continuing operations	41,712	$ 19,207	$ 32,172	$ 39,413	33,891	$ (3,799)	$ 60,729	$ 23,915	132,504	114,736	(87,840)
Assets	2,881,660				2,952,353				2,881,660	2,952,353
Payments to Acquire Productive Assets									99,995	102,649	86,288
Las Vegas Operations [Member]
Segment Reporting Information [Line Items]
Revenue, Net									1,258,207	1,217,935	1,191,685
Adjusted EBITDAM									410,301	379,748	357,456
Assets	2,506,411				2,535,615				2,506,411	2,535,615
Native American Management [Member]
Segment Reporting Information [Line Items]
Revenue, Net									88,277	68,149	59,149
Adjusted EBITDAM									66,622	46,937	33,194
Assets	74,000				85,308				74,000	85,308
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, Net									1,346,484	1,286,084	1,250,834
Adjusted EBITDAM									476,923	426,685	390,650
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue, Net									5,651	5,532	5,303
Adjusted EBITDAM									(4,692)	(5,996)	$ (5,201)
Assets	$ 301,249				$ 331,430				$ 301,249	$ 331,430