SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL STATEMENT INFORMATION - STATEMENTS OF CASH FLOWS (Details) - USD ($)			3 Months Ended
		Aug. 11, 2015	Dec. 31, 2015		Dec. 31, 2014
Cash flows provided by (used in) operating activities:
Net income			$ 37,450,000		$ 14,397,000
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization			19,128,000		20,053,000
Loss on early extinguishment of debt			207,000		0
Payments of discounts			(41,000)
Relinquishment liability reassessment			0		56,000
Accretion of discount to the relinquishment liability			0		227,000
Cash paid for accretion of discount to the relinquishment liability			0		(276,000)
Amortization of debt issuance costs, premiums and discounts			2,244,000		1,911,000
Provision (recovery) for losses on receivables			(6,280,000)		794,000
(Gain) loss on disposition of assets			(28,000)		739,000
Loss from unconsolidated affiliates			393,000		778,000
Inter-company transactions			0		0
Changes in operating assets and liabilities:
Increase in receivables			(8,745,000)		(1,047,000)
Increase in inventories			(608,000)		(1,267,000)
Increase in prepaid and other assets			(17,929,000)		(4,529,000)
Decrease in trade payables			(49,000)		(10,780,000)
Increase in accrued interest			10,732,000		20,726,000
Increase in other liabilities			5,509,000		4,851,000
Net cash flows provided by operating activities			41,983,000		46,633,000
Cash flows provided by (used in) investing activities:
Purchases of property and equipment, including change in construction payables			(17,843,000)		(5,760,000)
Issuance of third-party loans and advances			(2,556,000)		(336,000)
Payments received on third-party loans and advances			13,441,000		38,000
Increase in restricted cash, net			(777,000)		(1,784,000)
Proceeds from asset sales			82,000		27,000
Investments in unconsolidated affiliates			(500,000)		0
Investments in the New England Black Wolves			(250,000)		(500,000)
Inter-company transactions			0		0
Net cash flows used in investing activities			(8,403,000)		(8,315,000)
Cash flows provided by (used in) financing activities:
Borrowings from Mohegan Tribe			22,500,000		0
Repayments of other long-term debt			(129,000)		(103,000)
Principal portion of relinquishment liability payments			0		(6,336,000)
Distributions to Mohegan Tribe			(10,600,000)		(10,000,000)
Payments of financing fees			(4,621,000)		0
Payments on capital lease obligations			(203,000)		(329,000)
Non-controlling interest contributions			150,000		0
Inter-company transactions			0		0
Net cash flows provided by (used in) financing activities			124,225,000		(13,239,000)
Net increase in cash and cash equivalents			157,805,000		25,079,000
Cash and cash equivalents at beginning of period			65,754,000		49,108,000
Cash and cash equivalents at end of period			222,946,000		74,187,000
Effect of exchange rate on cash and cash equivalents			(613,000)		0
Credit Facility | Senior Secured Credit Facility - Revolving, due June 2018
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			231,000,000		107,000,000
Credit facility/line of credit repayments			(194,000,000)		(103,000,000)
Credit Facility | Senior Secured Credit Facility - Term Loan A
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			(2,331,000)		(1,563,000)
Credit Facility | Senior Secured Credit Facility - Term Loan B
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings		$ 90,000,000
Credit facility/line of credit repayments			(2,025,000)		(1,825,000)
Credit Facility | Line of Credit
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			123,694,000		113,051,000
Credit facility/line of credit repayments			(123,694,000)		(110,134,000)
Credit Facility | Downs Lodging Credit Facility
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			25,000,000		0
Credit Facility | Downs Lodging Credit Facility, due July 2016, net of debt issuance costs of $254 as of September 30, 2015
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			(40,516,000)		0
Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes			100,000,000		0
Senior Unsecured Notes | 2015 Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes			100,000,000
Consolidating/Eliminating Adjustments
Cash flows provided by (used in) operating activities:
Net income			(4,020,000)		9,635,000
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization			0		0
Loss on early extinguishment of debt			0
Payments of discounts			0
Relinquishment liability reassessment					0
Accretion of discount to the relinquishment liability					0
Cash paid for accretion of discount to the relinquishment liability					0
Amortization of debt issuance costs, premiums and discounts			0		0
Provision (recovery) for losses on receivables			0		0
(Gain) loss on disposition of assets			0		0
Loss from unconsolidated affiliates			0		0
Inter-company transactions			4,023,000		(9,632,000)
Changes in operating assets and liabilities:
Increase in receivables			209,000		234,000
Increase in inventories			0		0
Increase in prepaid and other assets			23,337,000		(28,000)
Decrease in trade payables			0		0
Increase in accrued interest			0		0
Increase in other liabilities			(23,549,000)		(209,000)
Net cash flows provided by operating activities			0		0
Cash flows provided by (used in) investing activities:
Purchases of property and equipment, including change in construction payables			0		0
Issuance of third-party loans and advances			0		0
Payments received on third-party loans and advances			0		0
Increase in restricted cash, net			0		0
Proceeds from asset sales			0		0
Investments in unconsolidated affiliates			0
Investments in the New England Black Wolves			0		0
Inter-company transactions			23,996,000		12,504,000
Net cash flows used in investing activities			23,996,000		12,504,000
Cash flows provided by (used in) financing activities:
Borrowings from Mohegan Tribe			0
Repayments of other long-term debt			0		0
Principal portion of relinquishment liability payments					0
Distributions to Mohegan Tribe			0		0
Payments of financing fees			0
Payments on capital lease obligations			12,000		19,000
Non-controlling interest contributions			0
Inter-company transactions			(24,008,000)		(12,523,000)
Net cash flows provided by (used in) financing activities			(23,996,000)		(12,504,000)
Net increase in cash and cash equivalents			0		0
Cash and cash equivalents at beginning of period			0		0
Cash and cash equivalents at end of period			0		0
Effect of exchange rate on cash and cash equivalents			0
Consolidating/Eliminating Adjustments | Credit Facility | Senior Secured Credit Facility - Revolving, due June 2018
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0		0
Credit facility/line of credit repayments			0		0
Consolidating/Eliminating Adjustments | Credit Facility | Senior Secured Credit Facility - Term Loan A
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0		0
Consolidating/Eliminating Adjustments | Credit Facility | Senior Secured Credit Facility - Term Loan B
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0		0
Consolidating/Eliminating Adjustments | Credit Facility | Line of Credit
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0		0
Credit facility/line of credit repayments			0		0
Consolidating/Eliminating Adjustments | Credit Facility | Downs Lodging Credit Facility
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0
Consolidating/Eliminating Adjustments | Credit Facility | Downs Lodging Credit Facility, due July 2016, net of debt issuance costs of $254 as of September 30, 2015
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0
Consolidating/Eliminating Adjustments | Senior Unsecured Notes | 2015 Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes			0
Authority
Cash flows provided by (used in) operating activities:
Net income			31,306,000		14,766,000
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization			15,467,000		16,281,000
Loss on early extinguishment of debt			0
Payments of discounts			(41,000)
Relinquishment liability reassessment					56,000
Accretion of discount to the relinquishment liability					227,000
Cash paid for accretion of discount to the relinquishment liability					(276,000)
Amortization of debt issuance costs, premiums and discounts			2,144,000		1,831,000
Provision (recovery) for losses on receivables			331,000		48,000
(Gain) loss on disposition of assets			(39,000)		737,000
Loss from unconsolidated affiliates			(6,000)		86,000
Inter-company transactions			(9,895,000)		(3,586,000)
Changes in operating assets and liabilities:
Increase in receivables			(7,216,000)		(1,337,000)
Increase in inventories			(610,000)		(1,095,000)
Increase in prepaid and other assets			(13,227,000)		(2,942,000)
Decrease in trade payables			(62,000)		(6,888,000)
Increase in accrued interest			16,989,000		19,893,000
Increase in other liabilities			759,000		4,659,000
Net cash flows provided by operating activities			35,900,000		42,460,000
Cash flows provided by (used in) investing activities:
Purchases of property and equipment, including change in construction payables			(14,939,000)		(4,179,000)
Issuance of third-party loans and advances			0		0
Payments received on third-party loans and advances			41,000		38,000
Increase in restricted cash, net			(21,000)		(36,000)
Proceeds from asset sales			82,000		27,000
Investments in unconsolidated affiliates			0
Investments in the New England Black Wolves			0		0
Inter-company transactions			(32,481,000)		(5,287,000)
Net cash flows used in investing activities			(47,318,000)		(9,437,000)
Cash flows provided by (used in) financing activities:
Borrowings from Mohegan Tribe			0
Repayments of other long-term debt			(122,000)		(63,000)
Principal portion of relinquishment liability payments					(6,336,000)
Distributions to Mohegan Tribe			(10,600,000)		(10,000,000)
Payments of financing fees			(2,948,000)
Payments on capital lease obligations			(203,000)		(329,000)
Non-controlling interest contributions			0
Inter-company transactions			0		0
Net cash flows provided by (used in) financing activities			118,771,000		(13,199,000)
Net increase in cash and cash equivalents			107,353,000		19,824,000
Cash and cash equivalents at beginning of period			42,093,000		33,939,000
Cash and cash equivalents at end of period			149,446,000		53,763,000
Effect of exchange rate on cash and cash equivalents			0
Authority | Credit Facility | Senior Secured Credit Facility - Revolving, due June 2018
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			231,000,000		107,000,000
Credit facility/line of credit repayments			(194,000,000)		(103,000,000)
Authority | Credit Facility | Senior Secured Credit Facility - Term Loan A
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			(2,331,000)		(1,563,000)
Authority | Credit Facility | Senior Secured Credit Facility - Term Loan B
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			(2,025,000)		(1,825,000)
Authority | Credit Facility | Line of Credit
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			123,694,000		113,051,000
Credit facility/line of credit repayments			(123,694,000)		(110,134,000)
Authority | Credit Facility | Downs Lodging Credit Facility
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0
Authority | Credit Facility | Downs Lodging Credit Facility, due July 2016, net of debt issuance costs of $254 as of September 30, 2015
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0
Authority | Senior Unsecured Notes | 2015 Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes			100,000,000
Total Guarantor Subsidiaries
Cash flows provided by (used in) operating activities:
Net income			4,077,000	[1],[2]	(4,493,000)	[3],[4]
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization			3,375,000	[1],[2]	3,527,000	[3],[4]
Loss on early extinguishment of debt	[1]		0
Payments of discounts	[1]		0
Relinquishment liability reassessment	[4]				0
Accretion of discount to the relinquishment liability	[3],[4]				0
Cash paid for accretion of discount to the relinquishment liability	[3]				0
Amortization of debt issuance costs, premiums and discounts			0	[1]	0	[3]
Provision (recovery) for losses on receivables			(5,000)	[1]	2,000	[3]
(Gain) loss on disposition of assets			11,000	[1]	2,000	[3]
Loss from unconsolidated affiliates			0	[1]	0	[3]
Inter-company transactions			3,553,000	[1]	11,719,000	[3]
Changes in operating assets and liabilities:
Increase in receivables			724,000	[1]	543,000	[3]
Increase in inventories			2,000	[1]	(172,000)	[3]
Increase in prepaid and other assets			(23,748,000)	[1]	(28,000)	[3]
Decrease in trade payables			12,000	[1]	(4,026,000)	[3]
Increase in accrued interest			0	[1]	0	[3]
Increase in other liabilities			4,388,000	[1]	4,078,000	[3]
Net cash flows provided by operating activities			(7,611,000)	[1]	11,152,000	[3]
Cash flows provided by (used in) investing activities:
Purchases of property and equipment, including change in construction payables			(2,804,000)	[1]	(1,334,000)	[3]
Issuance of third-party loans and advances			(500,000)	[1]	0	[3]
Payments received on third-party loans and advances			0	[1]	0	[3]
Increase in restricted cash, net			(504,000)	[1]	(1,748,000)	[3]
Proceeds from asset sales			0	[1]	0	[3]
Investments in unconsolidated affiliates	[1]		0
Investments in the New England Black Wolves			0	[1]	0
Inter-company transactions			8,473,000	[1]	(7,236,000)	[3]
Net cash flows used in investing activities			4,665,000	[1]	(10,318,000)	[3]
Cash flows provided by (used in) financing activities:
Borrowings from Mohegan Tribe	[1]		0
Repayments of other long-term debt			0	[1]	0	[3]
Principal portion of relinquishment liability payments	[3]				0
Distributions to Mohegan Tribe			0	[1]	0	[3]
Payments of financing fees	[1]		0
Payments on capital lease obligations			(12,000)	[1]	(19,000)	[3]
Non-controlling interest contributions	[1]		0
Inter-company transactions			2,357,000	[1]	3,838,000	[3]
Net cash flows provided by (used in) financing activities			2,345,000	[1]	3,819,000	[3]
Net increase in cash and cash equivalents			(601,000)	[1]	4,653,000	[3]
Cash and cash equivalents at beginning of period			22,167,000	[1],[5]	14,767,000	[3]
Cash and cash equivalents at end of period			21,566,000	[1],[6]	19,420,000	[3]
Effect of exchange rate on cash and cash equivalents	[1]		0
Total Guarantor Subsidiaries | Credit Facility | Senior Secured Credit Facility - Revolving, due June 2018
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0	[1]	0	[3]
Credit facility/line of credit repayments			0	[1]	0	[3]
Total Guarantor Subsidiaries | Credit Facility | Senior Secured Credit Facility - Term Loan A
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0	[1]	0	[3]
Total Guarantor Subsidiaries | Credit Facility | Senior Secured Credit Facility - Term Loan B
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0	[1]	0	[3]
Total Guarantor Subsidiaries | Credit Facility | Line of Credit
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0	[1]	0	[3]
Credit facility/line of credit repayments			0	[1]	0	[3]
Total Guarantor Subsidiaries | Credit Facility | Downs Lodging Credit Facility
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings	[1]		0
Total Guarantor Subsidiaries | Credit Facility | Downs Lodging Credit Facility, due July 2016, net of debt issuance costs of $254 as of September 30, 2015
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments	[1]		0
Total Guarantor Subsidiaries | Senior Unsecured Notes | 2015 Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes	[1]		0
Total Non-Guarantor Subsidiaries and Entities
Cash flows provided by (used in) operating activities:
Net income			6,087,000	[7],[8]	(5,511,000)	[9],[10]
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization			286,000	[7],[8]	245,000	[9],[10]
Loss on early extinguishment of debt	[7]		207,000
Payments of discounts			0
Relinquishment liability reassessment	[10]				0
Accretion of discount to the relinquishment liability	[9],[10]				0
Cash paid for accretion of discount to the relinquishment liability	[9]				0
Amortization of debt issuance costs, premiums and discounts			100,000	[7]	80,000	[9]
Provision (recovery) for losses on receivables			(6,606,000)	[7]	744,000	[9]
(Gain) loss on disposition of assets			0	[7]	0	[9]
Loss from unconsolidated affiliates			399,000	[7]	692,000	[9]
Inter-company transactions			2,319,000	[7]	1,499,000	[9]
Changes in operating assets and liabilities:
Increase in receivables			(2,462,000)	[7]	(487,000)	[9]
Increase in inventories			0	[7]	0	[9]
Increase in prepaid and other assets			(4,291,000)	[7]	(1,531,000)	[9]
Decrease in trade payables			1,000	[7]	134,000	[9]
Increase in accrued interest			(6,257,000)	[7]	833,000	[9]
Increase in other liabilities			23,911,000	[7]	(3,677,000)	[9]
Net cash flows provided by operating activities			13,694,000	[7]	(6,979,000)	[9]
Cash flows provided by (used in) investing activities:
Purchases of property and equipment, including change in construction payables			(100,000)	[7]	(247,000)	[9]
Issuance of third-party loans and advances			(2,056,000)	[7]	(336,000)	[9]
Payments received on third-party loans and advances			13,400,000	[7]	0	[9]
Increase in restricted cash, net			(252,000)	[7]	0	[9]
Proceeds from asset sales			0	[7]	0	[9]
Investments in unconsolidated affiliates	[7]		(500,000)
Investments in the New England Black Wolves			(250,000)	[7]	(500,000)
Inter-company transactions			12,000	[7]	19,000	[9]
Net cash flows used in investing activities			10,254,000	[7]	(1,064,000)	[9]
Cash flows provided by (used in) financing activities:
Borrowings from Mohegan Tribe	[7]		22,500,000
Repayments of other long-term debt			(7,000)	[7]	(40,000)	[9]
Principal portion of relinquishment liability payments	[9]				0
Distributions to Mohegan Tribe			0	[7]	0	[9]
Payments of financing fees	[7]		(1,673,000)
Payments on capital lease obligations			0	[7]	0	[9]
Non-controlling interest contributions	[7]		150,000
Inter-company transactions			21,651,000	[7]	8,685,000	[9]
Net cash flows provided by (used in) financing activities			27,105,000	[7]	8,645,000	[9]
Net increase in cash and cash equivalents			51,053,000	[7]	602,000	[9]
Cash and cash equivalents at beginning of period			1,494,000	[7],[11]	402,000	[9]
Cash and cash equivalents at end of period			51,934,000	[7],[12]	1,004,000	[9]
Effect of exchange rate on cash and cash equivalents	[7]		(613,000)
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Senior Secured Credit Facility - Revolving, due June 2018
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0	[7]	0	[9]
Credit facility/line of credit repayments			0	[7]	0	[9]
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Senior Secured Credit Facility - Term Loan A
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0	[7]	0	[9]
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Senior Secured Credit Facility - Term Loan B
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments			0	[7]	0	[9]
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Line of Credit
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings			0	[7]	0	[9]
Credit facility/line of credit repayments			0	[7]	$ 0	[9]
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Downs Lodging Credit Facility
Cash flows provided by (used in) financing activities:
Credit facility/line of credit borrowings	[7]		25,000,000
Total Non-Guarantor Subsidiaries and Entities | Credit Facility | Downs Lodging Credit Facility, due July 2016, net of debt issuance costs of $254 as of September 30, 2015
Cash flows provided by (used in) financing activities:
Credit facility/line of credit repayments	[7]		(40,516,000)
Total Non-Guarantor Subsidiaries and Entities | Senior Unsecured Notes | 2015 Senior Unsecured Notes
Cash flows provided by (used in) financing activities:
Proceeds from issuance of Senior Unsecured Notes	[7]		$ 0

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

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

[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.

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

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

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

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