SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL STATEMENT INFORMATION - BALANCE SHEETS (Details) - USD ($) $ in Thousands		Jun. 30, 2015		Mar. 31, 2015	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014	Sep. 30, 2013
Current assets:
Cash and cash equivalents		$ 70,160			$ 49,108		$ 71,658			$ 63,624
Restricted cash		4,786			675
Receivables, net		30,273			30,640
Inventories		15,516			14,544
Other current assets		17,977			16,997
Total current assets		138,712			111,964
Non-current assets:
Property and equipment, net		1,349,997			1,424,068
Goodwill		39,459			39,459
Other intangible assets, net		406,856			405,109
Other assets, net		96,322			75,360
Inter-company receivables		0			0
Investment in subsidiaries		0			0
Total assets		2,031,346			2,055,960
Current liabilities:
Current portion of long-term debt		19,366			29,308
Current portion of relinquishment liability		0			25,194
Due to Mohegan Tribe		5,875			2,250
Current portion of capital leases		816			793
Trade payables		14,146			24,086
Construction payables		2,530			5,832
Accrued interest payable		28,718			8,659
Other current liabilities		146,735			127,175
Total current liabilities		218,186			223,297
Non-current liabilities:
Long-term debt, net of current portion		1,635,288			1,675,958
Due to Mohegan Tribe, net of current portion		18,920			23,420
Capital leases, net of current portion		1,730			2,345
Other long-term liabilities		7,166			6,113
Inter-company payables		0			0
Accumulated losses in excess of investment in subsidiaries		0			0
Total liabilities		1,881,290			1,931,133
Capital:
Retained earnings		150,490			125,058
Mohegan Tribal Gaming Authority capital		150,490			125,058
Non-controlling interests		(434)			(231)
Total capital		150,056		$ 134,861	124,827		122,728		$ 121,466	199,385
Total liabilities and capital		2,031,346			2,055,960
Authority
Current assets:
Cash and cash equivalents		48,949			33,939		56,213			44,060
Restricted cash		63			47
Receivables, net		25,337			27,537
Inventories		14,147			13,339
Other current assets		16,580			15,559
Total current assets		105,076			90,421
Non-current assets:
Property and equipment, net		1,096,661			1,142,363
Goodwill		0			0
Other intangible assets, net		120,309			120,395
Other assets, net		24,869			28,625
Inter-company receivables		247,979			228,122
Investment in subsidiaries		316,094			325,651
Total assets		1,910,988			1,935,577
Current liabilities:
Current portion of long-term debt		18,757			28,893
Current portion of relinquishment liability					25,194
Due to Mohegan Tribe		0			0
Current portion of capital leases		816			793
Trade payables		12,311			18,893
Construction payables		2,170			4,411
Accrued interest payable		25,347			5,725
Other current liabilities		107,025			90,684
Total current liabilities		166,426			174,593
Non-current liabilities:
Long-term debt, net of current portion		1,589,963			1,630,958
Due to Mohegan Tribe, net of current portion		0			0
Capital leases, net of current portion		1,730			2,345
Other long-term liabilities		2,063			2,307
Inter-company payables		0			0
Accumulated losses in excess of investment in subsidiaries		0			0
Total liabilities		1,760,182			1,810,203
Capital:
Retained earnings		150,806			125,374
Mohegan Tribal Gaming Authority capital		150,806			125,374
Non-controlling interests		0			0
Total capital		150,806			125,374
Total liabilities and capital		1,910,988			1,935,577
Total Guarantor Subsidiaries
Current assets:
Cash and cash equivalents		20,123	[1],[2]		14,767	[2],[3]	11,897	[4]		18,655	[4]
Restricted cash		4,316	[1]		628	[3]
Receivables, net		4,347	[1]		2,637	[3]
Inventories		1,369	[1]		1,205	[3]
Other current assets		1,339	[1]		1,182	[3]
Total current assets		31,494	[1]		20,419	[3]
Non-current assets:
Property and equipment, net		214,402	[1]		222,425	[3]
Goodwill		39,459	[1]		39,459	[3]
Other intangible assets, net		284,492	[1]		284,714	[3]
Other assets, net		4,040	[1]		3,970	[3]
Inter-company receivables		85,486	[1]		65,981	[3]
Investment in subsidiaries		0	[1]		0	[3]
Total assets		659,373	[1]		636,968	[3]
Current liabilities:
Current portion of long-term debt		0	[1]		0	[3]
Current portion of relinquishment liability	[3]				0
Due to Mohegan Tribe		0	[1]		0	[3]
Current portion of capital leases		47	[1]		58	[3]
Trade payables		1,787	[1]		5,181	[3]
Construction payables		260	[1]		794	[3]
Accrued interest payable		0	[1]		0	[3]
Other current liabilities		37,875	[1]		29,504	[3]
Total current liabilities		39,969	[1]		35,537	[3]
Non-current liabilities:
Long-term debt, net of current portion		0	[1]		0	[3]
Due to Mohegan Tribe, net of current portion		0	[1]		0	[3]
Capital leases, net of current portion		5,781	[1]		6,111	[3]
Other long-term liabilities		0	[1]		0	[3]
Inter-company payables		241,094	[1]		225,269	[3]
Accumulated losses in excess of investment in subsidiaries		38,440	[1]		31,680	[3]
Total liabilities		325,284	[1]		298,597	[3]
Capital:
Retained earnings		334,089	[1]		338,371	[3]
Mohegan Tribal Gaming Authority capital		334,089	[1]		338,371	[3]
Non-controlling interests		0	[1]		0	[3]
Total capital		334,089	[1]		338,371	[3]
Total liabilities and capital		659,373	[1]		636,968	[3]
Total Non-Guarantor Subsidiaries and Entities
Current assets:
Cash and cash equivalents		1,088	[5],[6]		402	[6],[7]	3,548	[8]		909	[8]
Restricted cash		407	[5]		0	[7]
Receivables, net		2,025	[5]		1,287	[7]
Inventories		0	[5]		0	[7]
Other current assets		58	[5]		256	[7]
Total current assets		3,578	[5]		1,945	[7]
Non-current assets:
Property and equipment, net		38,934	[5]		59,280	[7]
Goodwill		0	[5]		0	[7]
Other intangible assets, net		2,055	[5]		0	[7]
Other assets, net		73,387	[5]		49,077	[7]
Inter-company receivables		44	[5]		0	[7]
Investment in subsidiaries		0	[5]		0	[7]
Total assets		117,998	[5]		110,302	[7]
Current liabilities:
Current portion of long-term debt		609	[5]		415	[7]
Current portion of relinquishment liability	[7]				0
Due to Mohegan Tribe		5,875	[5]		2,250	[7]
Current portion of capital leases		0	[5]		0	[7]
Trade payables		48	[5]		12	[7]
Construction payables		100	[5]		627	[7]
Accrued interest payable		3,371	[5]		2,934	[7]
Other current liabilities		3,224	[5]		7,750	[7]
Total current liabilities		13,227	[5]		13,988	[7]
Non-current liabilities:
Long-term debt, net of current portion		45,325	[5]		45,000	[7]
Due to Mohegan Tribe, net of current portion		18,920	[5]		23,420	[7]
Capital leases, net of current portion		0	[5]		0	[7]
Other long-term liabilities		5,103	[5]		3,806	[7]
Inter-company payables		92,415	[5]		68,834	[7]
Accumulated losses in excess of investment in subsidiaries		0	[5]		0	[7]
Total liabilities		174,990	[5]		155,048	[7]
Capital:
Retained earnings		(57,390)	[5]		(44,746)	[7]
Mohegan Tribal Gaming Authority capital		(57,390)	[5]		(44,746)	[7]
Non-controlling interests		398	[5]		0	[7]
Total capital		(56,992)	[5]		(44,746)	[7]
Total liabilities and capital		117,998	[5]		110,302	[7]
Consolidating/Eliminating Adjustments
Current assets:
Cash and cash equivalents		0			0		$ 0			$ 0
Restricted cash		0			0
Receivables, net		(1,436)			(821)
Inventories		0			0
Other current assets		0			0
Total current assets		(1,436)			(821)
Non-current assets:
Property and equipment, net		0			0
Goodwill		0			0
Other intangible assets, net		0			0
Other assets, net		(5,974)			(6,312)
Inter-company receivables		(333,509)			(294,103)
Investment in subsidiaries		(316,094)			(325,651)
Total assets		(657,013)			(626,887)
Current liabilities:
Current portion of long-term debt		0			0
Current portion of relinquishment liability					0
Due to Mohegan Tribe		0			0
Current portion of capital leases		(47)			(58)
Trade payables		0			0
Construction payables		0			0
Accrued interest payable		0			0
Other current liabilities		(1,389)			(763)
Total current liabilities		(1,436)			(821)
Non-current liabilities:
Long-term debt, net of current portion		0			0
Due to Mohegan Tribe, net of current portion		0			0
Capital leases, net of current portion		(5,781)			(6,111)
Other long-term liabilities		0			0
Inter-company payables		(333,509)			(294,103)
Accumulated losses in excess of investment in subsidiaries		(38,440)			(31,680)
Total liabilities		(379,166)			(332,715)
Capital:
Retained earnings		(277,015)			(293,941)
Mohegan Tribal Gaming Authority capital		(277,015)			(293,941)
Non-controlling interests		(832)			(231)
Total capital		(277,847)			(294,172)
Total liabilities and capital		$ (657,013)			$ (626,887)

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

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

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

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

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

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

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

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