Consolidating Condensed Financial Information (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Condensed Financial Statements, Captions
Subsidiary reporting information, assets	$ 62,900,000				$ 62,900,000
Revenues:
Gaming	503,620,000		371,624,000		1,477,041,000		847,650,000
Food and beverage	31,259,000		22,692,000		89,228,000		50,228,000
Lodging	14,485,000		9,677,000		39,077,000		20,509,000
Retail, entertainment and other	18,935,000		14,934,000		50,912,000		34,414,000
Revenues	568,299,000		418,927,000		1,656,258,000		952,801,000
Expenses and other costs:
Gaming	271,306,000		203,599,000		785,903,000		474,432,000
Food and beverage	29,648,000		19,858,000		82,559,000		43,807,000
Lodging	6,715,000		3,981,000		18,309,000		10,130,000
Retail, entertainment and other	9,184,000		7,416,000		20,448,000		16,744,000
Pre-opening, development and other costs	1,598,000		63,086,000		11,917,000		87,851,000
Depreciation and amortization	60,152,000		39,528,000		177,236,000		85,183,000
Write-downs, reserves and recoveries, net	1,135,000		12,130,000		4,359,000		14,259,000
Total expenses and other costs	491,107,000		434,117,000		1,424,515,000		918,164,000
Operating income	77,192,000		(15,190,000)		231,743,000		34,637,000
Equity earnings of subsidiaries	0		0		0		0
Interest expense, net	(62,498,000)		(48,500,000)		(191,290,000)		(105,420,000)
Loss on early extinguishment of debt	0		30,830,000		8,234,000		30,830,000
Loss from equity method investments	0		0		0		(92,181,000)
Management fee and inter-company interest	0		0		0		0
Income tax (expense) benefit	6,975,000		(47,378,000)		8,072,000		(51,766,000)
Income (loss) from continuing operations	7,719,000		(47,142,000)		24,147,000		(142,028,000)
Income (loss) from discontinued operations, net of income taxes	4,771,000		(133,275,000)		5,096,000		(128,887,000)
Net income (loss)	12,490,000		(180,417,000)		29,243,000		(270,915,000)
Balance Sheets
Current assets	239,800,000				239,800,000				279,600,000
Land, buildings, vessels and equipment, net	3,044,296,000				3,044,296,000				3,036,515,000
Goodwill	919,282,000				919,282,000				919,282,000
Intangible assets, net	534,515,000				534,515,000				500,084,000
Other non-current assets	89,500,000				89,500,000				101,300,000
Investment in subsidiaries	0				0				0
Assets of discontinued operations held for sale	20,687,000				20,687,000				322,548,000
Inter-company	0				0				0
Total assets	4,848,114,000				4,848,114,000				5,159,426,000
Current liabilities	381,400,000				381,400,000				346,300,000
Long-term debt less current portion	3,982,253,000				3,982,253,000				4,364,045,000
Other non-current liabilities	213,100,000				213,100,000				197,800,000
Liabilities of dicontinued operations held for sale	277,000				277,000				26,103,000
Inter-company	0				0
Additional paid-in capital	1,092,418,000				1,092,418,000				1,075,896,000
Accumulated deficit	(768,754,000)				(768,754,000)				(798,049,000)
Stockholders' Equity Attributable to Parent	259,599,000				259,599,000				213,704,000
Stockholders' Equity Attributable to Noncontrolling Interest	11,414,000				11,414,000				11,466,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	271,013,000				271,013,000				225,170,000
Total liabilities and stockholders' equity	4,848,114,000				4,848,114,000				5,159,426,000
Statements of Cash Flows
Cash provided by (used in) operating activities					270,527,000		129,835,000
Capital expenditures					188,722,000		188,457,000
Payments to Acquire Businesses, Net of Cash Acquired					0		1,749,736,000
Payments to Acquire Intangible Assets					25,000,000		0
Net proceeds from sale of discontinued operations held for sale					258,507,000		29,246,000
Escrow refund					25,000,000		0
Purchase of held-to-maturity debt securities					0		5,853,000
Proceeds from Sale, Maturity and Collection of Investments					0		4,428,000
Increase (Decrease) in Restricted Cash					(5,925,000)		0
Cash used in investing activities					75,471,000		(1,919,132,000)
Proceeds from credit facility					217,600,000		1,651,702,000
Proceeds from Issuance of Long-term Debt					0		850,000,000
Repayments of Long-term Debt					0		567,462,000
Proceeds from Stock Options Exercised	6,400,000		8,500,000		6,352,000		8,488,000
Cash provided by financing activities					(389,584,000)		1,895,622,000
Increase (decrease) in cash and cash equivalents					(43,586,000)		106,325,000
Cash and cash equivalents at the beginning of the period					198,575,000		101,792,000
Cash and cash equivalents at the end of the period	154,989,000		208,117,000		154,989,000		208,117,000
Total Attributable to Parent Company
Revenues:
Gaming	0		0		0		0
Food and beverage	0		0		0		0
Lodging	0		0		0		0
Retail, entertainment and other	100,000		0		100,000		100,000
Revenues	100,000		0		100,000		100,000
Expenses and other costs:
Gaming	0		0		0		0
Food and beverage	0		0		0		0
Lodging	0		0		0		0
Retail, entertainment and other	0		0		0		0
General and administrative and other	24,100,000		22,300,000		75,400,000		37,600,000
Pre-opening, development and other costs	700,000		62,300,000		3,300,000		86,100,000
Depreciation and amortization	1,300,000		1,200,000		4,900,000		3,800,000
Write-downs, reserves and recoveries, net	0		0		3,000,000		1,100,000
Total expenses and other costs	26,100,000		85,800,000		86,600,000		128,600,000
Operating income	(26,000,000)		(85,800,000)		(86,500,000)		(128,500,000)
Equity earnings of subsidiaries	69,700,000		(86,800,000)		210,800,000		(86,000,000)
Interest expense, net	(62,700,000)		(51,200,000)		193,900,000		109,400,000
Loss on early extinguishment of debt			(30,800,000)		8,200,000		30,800,000
Loss from equity method investments							0
Income (loss) from continuing operations before inter-company activity and income taxes	(19,000,000)		(254,600,000)		(77,800,000)		(354,700,000)
Management fee and inter-company interest	38,500,000		26,800,000		(115,100,000)		(32,000,000)
Income tax (expense) benefit	7,000,000		(47,400,000)		(8,100,000)		51,800,000
Income (loss) from continuing operations	12,500,000		(180,400,000)		29,200,000		(270,900,000)
Income (loss) from discontinued operations, net of income taxes	0		0		0		0
Net income (loss)	12,500,000		(180,400,000)		29,200,000		(270,900,000)
Balance Sheets
Current assets	37,500,000				37,500,000				66,800,000
Land, buildings, vessels and equipment, net	38,400,000				38,400,000				47,700,000
Goodwill	0				0				0
Intangible assets, net	0				0				0
Other non-current assets	60,900,000				60,900,000				72,600,000
Investment in subsidiaries	4,389,800,000				4,389,800,000				4,508,300,000
Assets of discontinued operations held for sale	3,500,000				3,500,000				3,400,000
Inter-company	0				0				0
Total assets	4,530,100,000				4,530,100,000				4,698,800,000
Current liabilities	83,100,000				83,100,000				114,800,000
Long-term debt less current portion	3,982,200,000				3,982,200,000				4,363,900,000
Other non-current liabilities	(75,300,000)				(75,300,000)				(48,100,000)
Liabilities of dicontinued operations held for sale	0				0				0
Inter-company	280,500,000				280,500,000				54,500,000
Stockholders' Equity Attributable to Parent	259,600,000				259,600,000				213,700,000
Stockholders' Equity Attributable to Noncontrolling Interest	0				0				0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	259,600,000				259,600,000
Total liabilities and stockholders' equity	4,530,100,000				4,530,100,000				4,698,800,000
Statements of Cash Flows
Cash provided by (used in) operating activities					111,300,000		(1,873,500,000)
Capital expenditures					(9,800,000)		(3,700,000)
Payments to Acquire Businesses, Net of Cash Acquired							0
Payments to Acquire Intangible Assets					0
Net proceeds from sale of discontinued operations held for sale					0		0
Escrow refund					0
Purchase of held-to-maturity debt securities							4,400,000
Loans receivable, net							0
Increase (Decrease) in Restricted Cash					5,900,000
Other Investing Activities					258,200,000		0
Cash used in investing activities					254,300,000		700,000
Proceeds from credit facility					217,600,000		1,651,700,000
Proceeds from Issuance of Long-term Debt							850,000,000
Repayments under Credit Facility					(146,300,000)		(5,100,000)
Repayments of Long-term Debt					(466,500,000)		(567,500,000)
Other Financing Activities					5,600,000		(33,500,000)
Cash provided by financing activities					(389,600,000)		1,895,600,000
Increase (decrease) in cash and cash equivalents			22,800,000		(24,000,000)
Cash and cash equivalents at the beginning of the period			28,300,000		28,600,000		5,500,000
Cash and cash equivalents at the end of the period	4,600,000				4,600,000
Guarantor Subsidiaries [Member]
Revenues:
Gaming	503,600,000	[1]	371,600,000	[1]	1,477,000,000		847,700,000
Food and beverage	31,300,000	[1]	22,700,000	[1]	89,200,000		50,200,000
Lodging	14,500,000	[1]	9,700,000	[1]	39,100,000		20,500,000
Retail, entertainment and other	18,800,000	[1]	14,900,000	[1]	50,800,000		34,300,000
Revenues	568,200,000	[1]	418,900,000	[1]	1,656,100,000		952,700,000
Expenses and other costs:
Gaming	271,300,000	[1]	203,600,000	[1]	785,900,000		474,400,000
Food and beverage	29,600,000	[1]	19,900,000	[1]	82,600,000		43,800,000
Lodging	6,700,000	[1]	4,000,000	[1]	18,300,000		10,100,000
Retail, entertainment and other	9,200,000	[1]	7,400,000	[1]	20,400,000		16,700,000
General and administrative and other	87,200,000	[1]	62,100,000	[1]	248,200,000		147,800,000
Pre-opening, development and other costs	800,000	[1]	600,000	[1]	8,300,000		1,400,000
Depreciation and amortization	58,900,000	[1]	38,300,000	[1]	172,400,000		81,400,000
Write-downs, reserves and recoveries, net	1,100,000	[1]	10,300,000	[1]	1,300,000		11,600,000
Total expenses and other costs	464,800,000	[1]	346,200,000	[1]	1,337,400,000		787,200,000
Operating income	103,400,000	[1]	72,700,000	[1]	318,700,000		165,500,000
Equity earnings of subsidiaries	0	[1]	0	[1]	0		0
Interest expense, net	200,000	[1]	2,700,000	[1]	(2,600,000)		(4,000,000)
Loss on early extinguishment of debt			0	[1]	0		0
Loss from equity method investments							0
Income (loss) from continuing operations before inter-company activity and income taxes	103,600,000	[1]	75,400,000	[1]	321,300,000		169,500,000
Management fee and inter-company interest	(38,500,000)	[1]	(26,800,000)	[1]	115,100,000		32,000,000
Income tax (expense) benefit	0	[1]	0	[1]	0		0
Income (loss) from continuing operations	65,100,000	[1]	48,600,000	[1]	206,200,000		137,500,000
Income (loss) from discontinued operations, net of income taxes	4,800,000	[1]	(133,300,000)	[1]	5,200,000		(128,900,000)
Net income (loss)	69,900,000	[1]	(84,700,000)	[1]	211,400,000		8,600,000
Balance Sheets
Current assets	178,200,000	[1]			178,200,000	[1]			185,100,000	[1]
Land, buildings, vessels and equipment, net	3,000,300,000	[1]			3,000,300,000	[1]			2,983,100,000	[1]
Goodwill	916,000,000				916,000,000				916,000,000
Intangible assets, net	529,500,000				529,500,000				495,100,000
Other non-current assets	4,400,000	[1]			4,400,000	[1]			6,600,000	[1]
Investment in subsidiaries	0	[1]			0	[1]			0	[1]
Assets of discontinued operations held for sale	17,200,000	[1]			17,200,000	[1]			318,800,000	[1]
Inter-company	281,700,000	[1]			281,700,000	[1]			55,700,000	[1]
Total assets	4,927,300,000	[1]			4,927,300,000	[1]			4,960,400,000	[1]
Current liabilities	298,000,000	[1]			298,000,000	[1]			231,400,000	[1]
Long-term debt less current portion	100,000	[1]			100,000	[1]			100,000	[1]
Other non-current liabilities	288,400,000	[1]			288,400,000	[1]			245,900,000	[1]
Liabilities of dicontinued operations held for sale	300,000				300,000				26,100,000	[1]
Inter-company	0	[1]			0	[1]			0	[1]
Stockholders' Equity Attributable to Parent	4,340,500,000	[1]			4,340,500,000	[1]			4,456,900,000	[1]
Stockholders' Equity Attributable to Noncontrolling Interest	0	[1]			0	[1]			0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,340,500,000	[1]			4,340,500,000	[1]
Total liabilities and stockholders' equity	4,927,300,000	[1]			4,927,300,000	[1]			4,960,400,000	[1]
Statements of Cash Flows
Cash provided by (used in) operating activities					163,100,000	[1]	1,981,500,000	[1]
Capital expenditures					(178,900,000)		(184,800,000)
Payments to Acquire Businesses, Net of Cash Acquired							(1,749,700,000)
Payments to Acquire Intangible Assets					(25,000,000)
Net proceeds from sale of discontinued operations held for sale					258,500,000		29,200,000
Escrow refund					25,000,000
Purchase of held-to-maturity debt securities							0
Loans receivable, net							0
Increase (Decrease) in Restricted Cash					0
Other Investing Activities					(258,800,000)		0
Cash used in investing activities					(179,200,000)	[1]	(1,905,300,000)	[1]
Proceeds from credit facility					0	[1]	0	[1]
Proceeds from Issuance of Long-term Debt							0	[1]
Repayments under Credit Facility					0	[1]	0	[1]
Repayments of Long-term Debt					0	[1]	0	[1]
Other Financing Activities					0		0
Cash provided by financing activities					0	[1]	0	[1]
Increase (decrease) in cash and cash equivalents			76,200,000	[1]	(16,100,000)	[1]
Cash and cash equivalents at the beginning of the period			149,700,000	[1]	142,300,000	[1]	73,500,000	[1]
Cash and cash equivalents at the end of the period	126,200,000	[1]			126,200,000	[1]
Non-Guarantor Subsidiaries [Member]
Revenues:
Gaming	0	[2]	0	[2]	0		0
Food and beverage	0	[2]	0	[2]	0		0
Lodging	0	[2]	0	[2]	0		0
Retail, entertainment and other	0	[2]	0	[2]	0		0
Revenues	0	[2]	0	[2]	0		0
Expenses and other costs:
Gaming	0	[2]	0	[2]	0		0
Food and beverage	0	[2]	0	[2]	0		0
Lodging	0	[2]	0	[2]	0		0
Retail, entertainment and other	0	[2]	0	[2]	0		0
General and administrative and other	100,000	[2]	100,000	[2]	200,000		400,000
Pre-opening, development and other costs	100,000	[2]	200,000	[2]	300,000		400,000
Depreciation and amortization	0	[2]	0	[2]	0		0
Write-downs, reserves and recoveries, net	0	[2]	1,800,000	[2]	0		1,600,000
Total expenses and other costs	200,000	[2]	2,100,000	[2]	500,000		2,400,000
Operating income	(200,000)	[2]	(2,100,000)	[2]	(500,000)		(2,400,000)
Equity earnings of subsidiaries	0	[2]	0	[2]	0		0
Interest expense, net	0	[2]	0	[2]	0		0
Loss on early extinguishment of debt			0	[2]	0		0
Loss from equity method investments							(92,200,000)
Income (loss) from continuing operations before inter-company activity and income taxes	(200,000)	[2]	(2,100,000)	[2]	(500,000)		(94,600,000)
Management fee and inter-company interest	0	[2]	0	[2]	0		0
Income tax (expense) benefit	0	[2]	0	[2]	0		0
Income (loss) from continuing operations	(200,000)	[2]	(2,100,000)	[2]	(500,000)		(94,600,000)
Income (loss) from discontinued operations, net of income taxes	0	[2]	0	[2]	(100,000)		0
Net income (loss)	(200,000)	[2]	(2,100,000)	[2]	(600,000)		(94,600,000)
Balance Sheets
Current assets	24,100,000	[2]			24,100,000	[2]			27,700,000	[2]
Land, buildings, vessels and equipment, net	5,600,000	[2]			5,600,000	[2]			5,700,000	[2]
Goodwill	3,300,000				3,300,000				3,300,000
Intangible assets, net	5,000,000				5,000,000				5,000,000
Other non-current assets	24,200,000	[2]			24,200,000	[2]			22,100,000	[2]
Investment in subsidiaries	0	[2]			0	[2]			0	[2]
Assets of discontinued operations held for sale	700,000	[2]			700,000	[2]			1,200,000	[2]
Inter-company	0	[2]			0	[2]			0	[2]
Total assets	62,900,000	[2]			62,900,000	[2]			65,000,000	[2]
Current liabilities	300,000	[2]			300,000	[2]			100,000	[2]
Long-term debt less current portion	0	[2]			0	[2]			0	[2]
Other non-current liabilities	0	[2]			0	[2]			0	[2]
Liabilities of dicontinued operations held for sale	0				0				0	[2]
Inter-company	1,200,000	[2]			1,200,000	[2]			1,200,000	[2]
Stockholders' Equity Attributable to Parent	50,000,000	[2]			50,000,000	[2]			52,200,000	[2]
Stockholders' Equity Attributable to Noncontrolling Interest	11,400,000				11,400,000				11,500,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	61,400,000				61,400,000
Total liabilities and stockholders' equity	62,900,000	[2]			62,900,000	[2]			65,000,000	[2]
Statements of Cash Flows
Cash provided by (used in) operating activities					(3,900,000)	[2]	21,800,000	[2]
Capital expenditures					0		0
Payments to Acquire Businesses, Net of Cash Acquired							0
Payments to Acquire Intangible Assets					0
Net proceeds from sale of discontinued operations held for sale					0		0
Escrow refund					0
Purchase of held-to-maturity debt securities							(5,800,000)
Loans receivable, net							(6,300,000)
Increase (Decrease) in Restricted Cash					0
Other Investing Activities					400,000		(2,400,000)
Cash used in investing activities					400,000	[2]	(14,500,000)	[2]
Proceeds from credit facility					0	[2]	0	[2]
Proceeds from Issuance of Long-term Debt							0	[2]
Repayments under Credit Facility					0	[2]	0	[2]
Repayments of Long-term Debt					0	[2]	0	[2]
Other Financing Activities					0		0
Cash provided by financing activities					0	[2]	0	[2]
Increase (decrease) in cash and cash equivalents			7,300,000	[2]	(3,500,000)	[2]
Cash and cash equivalents at the beginning of the period			30,100,000	[2]	27,700,000	[2]	22,800,000	[2]
Cash and cash equivalents at the end of the period	24,200,000	[2]			24,200,000	[2]
Consolidating and Eliminating Entries
Revenues:
Gaming	0		0				0
Food and beverage	0		0				0
Lodging	0		0				0
Retail, entertainment and other	0		0				0
Revenues	0		0				0
Expenses and other costs:
Gaming	0		0				0
Food and beverage	0		0				0
Lodging	0		0				0
Retail, entertainment and other	0		0				0
General and administrative and other	0		0				0
Pre-opening, development and other costs	0		0				0
Depreciation and amortization	0		0				0
Write-downs, reserves and recoveries, net	0		0				0
Total expenses and other costs	0		0				0
Operating income	0		0				0
Equity earnings of subsidiaries	(69,700,000)		86,800,000		(210,800,000)		86,000,000
Interest expense, net	0		0				0
Loss on early extinguishment of debt			0				0
Loss from equity method investments							0
Income (loss) from continuing operations before inter-company activity and income taxes	(69,700,000)		86,800,000		(210,800,000)		86,000,000
Management fee and inter-company interest	0		0				0
Income tax (expense) benefit	0		0				0
Income (loss) from continuing operations	(69,700,000)		86,800,000		(210,800,000)		86,000,000
Income (loss) from discontinued operations, net of income taxes	0		0				0
Net income (loss)	(69,700,000)		86,800,000		(210,800,000)		86,000,000
Balance Sheets
Current assets	0				0				0
Land, buildings, vessels and equipment, net	0				0				0
Goodwill	0				0				0
Intangible assets, net	0				0				0
Other non-current assets	0				0				0
Investment in subsidiaries	(4,389,800,000)				(4,389,800,000)				(4,508,300,000)
Assets of discontinued operations held for sale	(700,000)				(700,000)				(800,000)
Inter-company	(281,700,000)				(281,700,000)				(55,700,000)
Total assets	(4,672,200,000)				(4,672,200,000)				(4,564,800,000)
Current liabilities	0				0				0
Long-term debt less current portion	0				0				0
Other non-current liabilities	0				0				0
Liabilities of dicontinued operations held for sale	0				0				0
Inter-company	(281,700,000)				(281,700,000)				(55,700,000)
Stockholders' Equity Attributable to Parent	(4,390,500,000)				(4,390,500,000)				(4,509,100,000)
Stockholders' Equity Attributable to Noncontrolling Interest	0				0				0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(4,390,500,000)				(4,390,500,000)
Total liabilities and stockholders' equity	(4,672,200,000)				(4,672,200,000)				(4,564,800,000)
Statements of Cash Flows
Cash provided by (used in) operating activities					0		0
Capital expenditures					0		0
Payments to Acquire Businesses, Net of Cash Acquired							0
Payments to Acquire Intangible Assets					0
Net proceeds from sale of discontinued operations held for sale					0		0
Escrow refund					0
Purchase of held-to-maturity debt securities							0
Loans receivable, net							0
Increase (Decrease) in Restricted Cash					0
Other Investing Activities					0		0
Cash used in investing activities					0		0
Proceeds from credit facility					0		0
Proceeds from Issuance of Long-term Debt							0
Repayments under Credit Facility					0		0
Repayments of Long-term Debt					0		0
Other Financing Activities					0		0
Cash provided by financing activities					0		0
Increase (decrease) in cash and cash equivalents			0		0
Cash and cash equivalents at the beginning of the period			0		0		0
Cash and cash equivalents at the end of the period	$ 0				$ 0

[1] (a)As of September 30, 2014, the following material subsidiaries are identified as guarantors of our senior and senior subordinated notes: Belterra Resort Indiana, LLC; Boomtown, LLC; Casino Magic, LLC; Louisiana-I Gaming; PNK (Baton Rouge) Partnership; PNK (BOSSIER CITY), Inc.; PNK Development 7, LLC; PNK Development 8, LLC; PNK Development 9, LLC; PNK (LAKE CHARLES), L.L.C.; PNK (Ohio), LLC; PNK (Ohio) II, LLC; PNK (Ohio) III, LLC; PNK (River City), LLC; PNK (SAM), LLC; PNK (SAZ), LLC; Ameristar Casino Black Hawk, Inc.; Ameristar Casino Council Bluffs, Inc.; Ameristar Casino St. Charles, Inc.; Ameristar Casino Kansas City, Inc.; Ameristar Casino Vicksburg, Inc.; Cactus Pete’s, Inc.; Ameristar East Chicago Holdings, LLC; Ameristar Casino East Chicago, LLC; and Ameristar Casino Springfield, LLC. In addition, certain other immaterial subsidiaries are also guarantors of our senior and senior subordinated notes.

[2] (b)Guarantor subsidiaries of our senior and senior subordinated notes exclude subsidiaries with approximately $62.9 million in cash and other assets as of September 30, 2014 that include a subsidiary that owns a majority interest in the licensee of Retama Park Racetrack and certain other subsidiaries.