SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL STATEMENT INFORMATION - STATEMENTS OF INCOME (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2010
Revenues:
Gaming	$ 1,133,563		$ 1,190,202		$ 1,254,558
Food and beverage	91,655		86,251		92,149
Hotel	47,310		40,873		39,609
Retail, entertainment and other	119,134		118,559		112,194
Gross revenues	1,391,662		1,435,885		1,498,510
Less-Promotional allowances	(98,944)		(95,857)		(99,197)
Net revenues	1,292,718		1,340,028		1,399,313
Operating costs and expenses:
Gaming	687,021		708,929		771,909
Food and beverage	41,482		41,575		44,949
Hotel	15,807		14,339		14,293
Retail, entertainment and other	50,945		43,859		40,723
Gaming and other operations					871,874
Advertising, general and administrative	190,639		192,673		198,171
Corporate	41,036		28,122		17,379
Advertising, general and administrative					215,550
Depreciation and amortization	80,126		80,317		85,030
(Gain) loss on disposition of assets	(9)		241		353
Severance	0		29		12,521
Pre-opening	1,187		687		0
Impairment of Project Horizon	4,981		0		0		58,100
Relinquishment liability reassessment	(1,905)		(249)		(11,439)
Total operating costs and expenses	1,111,310		1,110,522		1,173,889
Income (loss) from operations	181,408		229,506		225,424
Other income (expense):
Accretion of discount to the relinquishment liability	(2,205)		(4,974)		(8,248)
Interest income	7,066		6,271		4,492
Interest expense, net of capitalized interest	(147,933)		(170,150)		(146,057)
Loss on early extinguishment of debt	(62,041)		(11,516)		(14,326)
Loss on interests in subsidiaries	0		0		0
Other income (expense), net	(853)		(1,595)		(44)
Other income, net					4,448
Total other expense	(205,966)		(181,964)		(164,183)
Net income (loss)	(24,558)		47,542		61,241
Loss attributable to non-controlling interests	380		2,784		2,019
Net income (loss) attributable to Mohegan Tribal Gaming Authority	(24,178)		50,326		63,260
Authority
Revenues:
Gaming	858,780		911,180
Food and beverage	62,273		59,334
Hotel	42,921		40,873
Retail, entertainment and other	101,506		100,545
Gross revenues	1,065,480		1,111,932
Less-Promotional allowances	(76,618)		(76,407)
Net revenues	988,862		1,035,525		1,079,411
Operating costs and expenses:
Gaming	488,293		507,069
Food and beverage	32,348		33,297
Hotel	15,287		14,339
Retail, entertainment and other	45,876		40,371
Gaming and other operations					643,557
Advertising, general and administrative	155,668		159,869
Corporate	13,276		14,841
Advertising, general and administrative					177,486
Depreciation and amortization	65,406		67,097		68,666
(Gain) loss on disposition of assets	(12)		222		68
Severance			(146)		12,521
Pre-opening	0		0
Impairment of Project Horizon	4,981
Relinquishment liability reassessment	(1,905)		(249)		(11,439)
Total operating costs and expenses	819,218		836,710		890,859
Income (loss) from operations	169,644		198,815		188,552
Other income (expense):
Accretion of discount to the relinquishment liability	(2,205)		(4,974)		(8,248)
Interest income	88		146
Interest expense, net of capitalized interest	(97,380)		(118,303)		(72,520)
Loss on early extinguishment of debt	(62,041)		(11,516)		(14,326)
Loss on interests in subsidiaries	(32,449)		(13,834)		(30,498)
Other income (expense), net	165		(8)
Other income, net					300
Total other expense	(193,822)		(148,489)
Net income (loss)	(24,178)		50,326		63,260
Loss attributable to non-controlling interests	0		0		0
Net income (loss) attributable to Mohegan Tribal Gaming Authority	(24,178)		50,326		63,260
Total Guarantor Subsidiaries
Revenues:
Gaming	274,783	[1]	279,022	[1]
Food and beverage	29,382	[1]	26,917	[1]
Hotel	4,389	[1]	0	[1]
Retail, entertainment and other	16,515	[1]	16,679	[1]
Gross revenues	325,069	[1]	322,618	[1]
Less-Promotional allowances	(20,567)	[1]	(17,300)	[1]
Net revenues	304,502	[1]	305,318	[1]	321,563	[1]
Operating costs and expenses:
Gaming	198,728	[1]	201,860	[1]
Food and beverage	9,134	[1]	8,280	[1]
Hotel	4,631	[1]	0	[1]
Retail, entertainment and other	6,780	[1]	5,589	[1]
Gaming and other operations					230,263	[1]
Advertising, general and administrative	35,075	[1]	32,997	[1]
Corporate	0	[1]	0	[1]
Advertising, general and administrative					33,272	[1]
Depreciation and amortization	13,814	[1]	13,220	[1]	16,364	[1]
(Gain) loss on disposition of assets	3	[1]	19	[1]	285	[1]
Severance			175	[1]	0	[1]
Pre-opening	1,187	[1]	687	[1]
Impairment of Project Horizon	0	[1]
Relinquishment liability reassessment	0	[1]	0	[1]	0	[1]
Total operating costs and expenses	269,352	[1]	262,827	[1]	280,184	[1]
Income (loss) from operations	35,150	[1]	42,491	[1]	41,379	[1]
Other income (expense):
Accretion of discount to the relinquishment liability	0	[1]	0	[1]	0	[1]
Interest income	4,704	[1]	2,320	[1]
Interest expense, net of capitalized interest	(42,583)	[1]	(44,126)	[1]	(69,533)	[1]
Loss on early extinguishment of debt	0	[1]	0	[1]	0	[1]
Loss on interests in subsidiaries	(24,848)	[1]	(7,389)	[1]	(1,944)	[1]
Other income (expense), net	0	[1]	0	[1]
Other income, net					1,051	[1]
Total other expense	(62,727)	[1]	(49,195)	[1]
Net income (loss)	(27,577)	[1]	(6,704)	[1]	(29,047)	[1]
Loss attributable to non-controlling interests	0	[1]	0	[1]	0	[1]
Net income (loss) attributable to Mohegan Tribal Gaming Authority	(27,577)	[1]	(6,704)	[1]	(29,047)	[1]
Total Non Guarantor Entities
Revenues:
Gaming	0	[2]	0	[2]
Food and beverage	0	[2]	0	[2]
Hotel	0	[2]	0	[2]
Retail, entertainment and other	5,464	[2]	1,575	[2]
Gross revenues	5,464	[2]	1,575	[2]
Less-Promotional allowances	(17)	[2]	(4)	[2]
Net revenues	5,447	[2]	1,571	[2]	285	[2]
Operating costs and expenses:
Gaming	0	[2]	0	[2]
Food and beverage	0	[2]	(2)	[2]
Hotel	0	[2]	0	[2]
Retail, entertainment and other	0	[2]	0	[2]
Gaming and other operations					0	[2]
Advertising, general and administrative	27,927	[2]	13,373	[2]
Corporate	0	[2]	0	[2]
Advertising, general and administrative					4,582	[2]
Depreciation and amortization	906	[2]	0	[2]	0	[2]
(Gain) loss on disposition of assets	0	[2]	0	[2]	0	[2]
Severance			0	[2]	0	[2]
Pre-opening	0	[2]	0	[2]
Impairment of Project Horizon	0	[2]
Relinquishment liability reassessment	0	[2]	0	[2]	0	[2]
Total operating costs and expenses	28,833	[2]	13,371	[2]	4,582	[2]
Income (loss) from operations	(23,386)	[2]	(11,800)	[2]	(4,297)	[2]
Other income (expense):
Accretion of discount to the relinquishment liability	0	[2]	0	[2]	0	[2]
Interest income	7,306	[2]	6,064	[2]
Interest expense, net of capitalized interest	(13,002)	[2]	(9,980)	[2]	(4,979)	[2]
Loss on early extinguishment of debt	0	[2]	0	[2]	0	[2]
Loss on interests in subsidiaries	0	[2]	0	[2]	0	[2]
Other income (expense), net	(1,018)	[2]	(1,587)	[2]
Other income, net					4,072	[2]
Total other expense	(6,714)	[2]	(5,503)	[2]
Net income (loss)	(30,100)	[2]	(17,303)	[2]	(5,204)	[2]
Loss attributable to non-controlling interests	0	[2]	0	[2]	0	[2]
Net income (loss) attributable to Mohegan Tribal Gaming Authority	(30,100)	[2]	(17,303)	[2]	(5,204)	[2]
Consolidating/Eliminating Adjustments
Revenues:
Gaming	0		0
Food and beverage	0		0
Hotel	0		0
Retail, entertainment and other	(4,351)		(240)
Gross revenues	(4,351)		(240)
Less-Promotional allowances	(1,742)		(2,146)
Net revenues	(6,093)		(2,386)		(1,946)
Operating costs and expenses:
Gaming	0		0
Food and beverage	0		0
Hotel	(4,111)		0
Retail, entertainment and other	(1,711)		(2,101)
Gaming and other operations					(1,946)
Advertising, general and administrative	(28,031)		(13,566)
Corporate	27,760		13,281
Advertising, general and administrative					210
Depreciation and amortization	0		0		0
(Gain) loss on disposition of assets	0		0		0
Severance			0		0
Pre-opening	0		0
Impairment of Project Horizon	0
Relinquishment liability reassessment	0		0		0
Total operating costs and expenses	(6,093)		(2,386)		(1,736)
Income (loss) from operations	0		0		(210)
Other income (expense):
Accretion of discount to the relinquishment liability	0		0		0
Interest income	(5,032)		(2,259)
Interest expense, net of capitalized interest	5,032		2,259		975
Loss on early extinguishment of debt	0		0		0
Loss on interests in subsidiaries	57,297		21,223		32,442
Other income (expense), net	0		0
Other income, net					(975)
Total other expense	57,297		21,223
Net income (loss)	57,297		21,223		32,232
Loss attributable to non-controlling interests	380		2,784		2,019
Net income (loss) attributable to Mohegan Tribal Gaming Authority	$ 57,677		$ 24,007		$ 34,251

[1] Includes the Pocono Downs Subsidiaries, MBC, Mohegan Golf, Mohegan Ventures-NW, MVW, WTG and MTGA Gaming.

[2] Includes MGA and subsidiaries, Downs Lodging, Salishan-Mohegan, MG&H and Mohegan Resorts and subsidiaries.