SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL STATEMENT INFORMATION - BALANCE SHEETS (Details) - USD ($) $ in Thousands	Jun. 30, 2016		Mar. 31, 2016	Sep. 30, 2015		Jun. 30, 2015		Mar. 31, 2015	Sep. 30, 2014
Current assets:
Cash and cash equivalents	$ 188,669			$ 65,754		$ 70,160			$ 49,108
Restricted cash	53,052			1,762
Receivables, net	39,091			53,944
Inventories	16,723			15,546
Prepaid expenses	16,194			9,033
Other current assets	6,048			9,497
Total current assets	319,777			155,536
Non-current assets:
Property and equipment, net	1,323,074			1,352,055
Goodwill	39,459			39,459
Other intangible assets, net	406,303			406,718
Other assets, net	80,772			66,365
Inter-company receivables	0			0
Investment in subsidiaries	0			0
Total assets	2,169,385			2,020,133
Current liabilities:
Current portion of long-term debt	24,300			49,194
Due to Mohegan Tribe	7,000			6,000
Current portion of capital leases	848			824
Trade payables	13,282			15,016
Construction payables	3,106			13,137
Accrued interest payable	22,521			12,055
Other current liabilities	147,684			141,280
Total current liabilities	218,741			237,506
Non-current liabilities:
Long-term debt, net of current portion	1,658,420			1,593,730
Due to Mohegan Tribe, net of current portion	7,420			17,420
Capital leases, net of current portion	882			1,521
Other long-term liabilities	2,353			1,915
Inter-company payables	0			0
Accumulated losses in excess of investment in subsidiaries	0			0
Total liabilities	1,887,816			1,852,092
Capital:
Retained earnings	223,444			169,452
Accumulated other comprehensive income	1,803			0
Mohegan Tribal Gaming Authority total capital	225,247			169,452
Non-controlling interests	56,322			(1,411)
Total capital	281,569		$ 269,865	168,041		150,056		$ 134,861	124,827
Total liabilities and capital	2,169,385			2,020,133
Consolidating/Eliminating Adjustments
Current assets:
Cash and cash equivalents	0			0		0			0
Restricted cash	0			0
Receivables, net	(2,276)			(1,646)
Inventories	0			0
Prepaid expenses	0			0
Other current assets	0			0
Total current assets	(2,276)			(1,646)
Non-current assets:
Property and equipment, net	0			0
Goodwill	0			0
Other intangible assets, net	0			0
Other assets, net	(30,198)			(5,960)
Inter-company receivables	(371,111)			(348,381)
Investment in subsidiaries	(381,864)			(328,462)
Total assets	(785,449)			(684,449)
Current liabilities:
Current portion of long-term debt	0			0
Due to Mohegan Tribe	0			0
Current portion of capital leases	(52)			(48)
Trade payables	0			0
Construction payables	0			0
Accrued interest payable	0			0
Other current liabilities	(2,224)			(1,598)
Total current liabilities	(2,276)			(1,646)
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	(5,731)			(5,770)
Other long-term liabilities	(24,285)			0
Inter-company payables	(371,111)			(348,381)
Accumulated losses in excess of investment in subsidiaries	(41,571)			(40,873)
Total liabilities	(444,974)			(396,670)
Capital:
Retained earnings	(340,211)			(286,128)
Accumulated other comprehensive income	(1,803)
Mohegan Tribal Gaming Authority total capital	(342,014)			(286,128)
Non-controlling interests	1,539			(1,651)
Total capital	(340,475)			(287,779)
Total liabilities and capital	(785,449)			(684,449)
Authority
Current assets:
Cash and cash equivalents	116,162			42,093		48,949			33,939
Restricted cash	15			62
Receivables, net	28,218			29,134
Inventories	15,502			14,401
Prepaid expenses	14,965			6,123
Other current assets	5,925			9,446
Total current assets	180,787			101,259
Non-current assets:
Property and equipment, net	1,076,762			1,098,588
Goodwill	0			0
Other intangible assets, net	120,196			120,281
Other assets, net	10,292			10,711
Inter-company receivables	269,105			254,348
Investment in subsidiaries	381,864			328,462
Total assets	2,039,006			1,913,649
Current liabilities:
Current portion of long-term debt	21,075			46,248
Due to Mohegan Tribe	0			0
Current portion of capital leases	848			824
Trade payables	11,720			12,365
Construction payables	2,901			11,149
Accrued interest payable	22,440			5,461
Other current liabilities	112,554			108,911
Total current liabilities	171,538			184,958
Non-current liabilities:
Long-term debt, net of current portion	1,639,258			1,555,487
Due to Mohegan Tribe, net of current portion	0			0
Capital leases, net of current portion	882			1,521
Other long-term liabilities	1,765			1,915
Inter-company payables	0			0
Accumulated losses in excess of investment in subsidiaries	0			0
Total liabilities	1,813,443			1,743,881
Capital:
Retained earnings	223,760			169,768
Accumulated other comprehensive income	1,803
Mohegan Tribal Gaming Authority total capital	225,563			169,768
Non-controlling interests	0			0
Total capital	225,563			169,768
Total liabilities and capital	2,039,006			1,913,649
Total Guarantor Subsidiaries
Current assets:
Cash and cash equivalents	19,921	[1],[2]		22,167	[2],[3]	20,123	[4]		14,767	[4]
Restricted cash	2,321	[1]		1,661	[3]
Receivables, net	3,987	[1]		3,585	[3]
Inventories	1,221	[1]		1,145	[3]
Prepaid expenses	1,187	[1]		2,877	[3]
Other current assets	123	[1]		51	[3]
Total current assets	28,760	[1]		31,486	[3]
Non-current assets:
Property and equipment, net	209,055	[1]		214,778	[3]
Goodwill	39,459	[1]		39,459	[3]
Other intangible assets, net	284,196	[1]		284,418	[3]
Other assets, net	30,260	[1]		4,017	[3]
Inter-company receivables	102,006	[1]		94,033	[3]
Investment in subsidiaries	0	[1]		0	[3]
Total assets	693,736	[1]		668,191	[3]
Current liabilities:
Current portion of long-term debt	0	[1]		0	[3]
Due to Mohegan Tribe	0	[1]		0	[3]
Current portion of capital leases	52	[1]		48	[3]
Trade payables	1,520	[1]		2,564	[3]
Construction payables	205	[1]		1,888	[3]
Accrued interest payable	0	[1]		0	[3]
Other current liabilities	34,857	[1]		29,699	[3]
Total current liabilities	36,634	[1]		34,199	[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	5,731	[1]		5,770	[3]
Other long-term liabilities	588	[1]		0	[3]
Inter-company payables	255,554	[1]		246,380	[3]
Accumulated losses in excess of investment in subsidiaries	41,571	[1]		40,873	[3]
Total liabilities	340,078	[1]		327,222	[3]
Capital:
Retained earnings	353,658	[1]		340,969	[3]
Accumulated other comprehensive income	0
Mohegan Tribal Gaming Authority total capital	353,658	[1]		340,969	[3]
Non-controlling interests	0	[1]		0	[3]
Total capital	353,658	[1]		340,969	[3]
Total liabilities and capital	693,736	[1]		668,191	[3]
Total Non-Guarantor Subsidiaries and Entities
Current assets:
Cash and cash equivalents	52,586	[5],[6]		1,494	[6],[7]	$ 1,088	[8]		$ 402	[8]
Restricted cash	50,716	[5]		39	[7]
Receivables, net	9,162	[5]		22,871	[7]
Inventories	0	[5]		0	[7]
Prepaid expenses	42	[5]		33	[7]
Other current assets	0	[5]		0	[7]
Total current assets	112,506	[5]		24,437	[7]
Non-current assets:
Property and equipment, net	37,257	[5]		38,689	[7]
Goodwill	0	[5]		0	[7]
Other intangible assets, net	1,911	[5]		2,019	[7]
Other assets, net	70,418	[5]		57,597	[7]
Inter-company receivables	0	[5]		0	[7]
Investment in subsidiaries	0	[5]		0	[7]
Total assets	222,092	[5]		122,742	[7]
Current liabilities:
Current portion of long-term debt	3,225	[5]		2,946	[7]
Due to Mohegan Tribe	7,000	[5]		6,000	[7]
Current portion of capital leases	0	[5]		0	[7]
Trade payables	42	[5]		87	[7]
Construction payables	0	[5]		100	[7]
Accrued interest payable	81	[5]		6,594	[7]
Other current liabilities	2,497	[5]		4,268	[7]
Total current liabilities	12,845	[5]		19,995	[7]
Non-current liabilities:
Long-term debt, net of current portion	19,162	[5]		38,243	[7]
Due to Mohegan Tribe, net of current portion	7,420	[5]		17,420	[7]
Capital leases, net of current portion	0	[5]		0	[7]
Other long-term liabilities	24,285	[5]		0	[7]
Inter-company payables	115,557	[5]		102,001	[7]
Accumulated losses in excess of investment in subsidiaries	0	[5]		0	[7]
Total liabilities	179,269	[5]		177,659	[7]
Capital:
Retained earnings	(13,763)	[5]		(55,157)	[7]
Accumulated other comprehensive income	1,803
Mohegan Tribal Gaming Authority total capital	(11,960)	[5]		(55,157)	[7]
Non-controlling interests	54,783	[5]		240	[7]
Total capital	42,823	[5]		(54,917)	[7]
Total liabilities and capital	$ 222,092	[5]		$ 122,742	[7]

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

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