Segments (Details) - USD ($) $ in Thousands	3 Months Ended								4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Apr. 30, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue, Net	$ 394,554	$ 347,140	$ 351,486	$ 359,247	$ 347,951	$ 323,597	$ 337,818	$ 342,769			$ 1,452,427	$ 1,352,135	$ 1,291,616
Adjusted EBITDA											488,666	451,414	399,049
Preopening											(731)	(1,165)	(640)
Depreciation and amortization											(156,668)	(137,865)	(127,961)
Share-based Compensation									$ (3,500)	$ (3,100)	(6,590)	(19,726)	(12,757)
Donation to UNLV											0	(2,500)	0
Asset impairment											0	(6,301)	(11,739)
Write-Downs and Other Charges, Net.											(23,214)	(9,514)	(20,956)
Adjusted EBITDA attributable to MPM noncontrolling interest											14,675	14,192	13,424
Other											1,133	(537)	(435)
Operating (loss) income and earnings (losses) from subsidiaries and joint ventures											317,271	287,998	237,985
Interest expense, net											(140,189)	(144,489)	(151,702)
Loss on extinguishment/modification of debt											(7,270)	(90)	(4,132)
Gain on Native American development											0	0	49,074
Change in fair value of derivative instruments											87	(1)	(90)
Income from continuing operations					48,558	21,016	28,146	45,698			169,899	143,418	131,135
Discontinued operations					5	(6)	(33)	(132)			0	(166)	(42,548)
Net income	39,895	$ 39,933	$ 30,568	$ 59,503	48,563	$ 21,010	$ 28,113	$ 45,566			169,899	143,252	88,587
Assets	3,269,967				2,932,111					3,269,967	3,269,967	2,932,111
Payments to Acquire Productive Assets											162,377	129,925	102,748
Las Vegas Operations [Member]
Segment Reporting Information [Line Items]
Revenue, Net											1,336,177	1,258,207	1,217,935
Adjusted EBITDA											423,692	410,301	379,748
Assets	2,883,733				2,506,411					2,883,733	2,883,733	2,506,411
Payments to Acquire Productive Assets											162,377	129,925	102,748
Native American Management [Member]
Segment Reporting Information [Line Items]
Revenue, Net											110,962	88,277	68,149
Adjusted EBITDA											87,259	66,622	46,937
Assets	61,379				74,000					61,379	61,379	74,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue, Net											1,447,139	1,346,484	1,286,084
Adjusted EBITDA											510,951	476,923	426,685
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue, Net											5,288	5,651	5,532
Adjusted EBITDA											(22,285)	(25,509)	$ (27,636)
Assets	$ 324,855				$ 351,700					$ 324,855	$ 324,855	$ 351,700