SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL STATEMENT INFORMATION - STATEMENTS OF CASH FLOWS (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities	$ 144,291		$ 139,091
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	(40,638)		(39,701)
Other cash flows provided by (used in) investing activities	1,938		35
Net cash flows used in investing activities	(38,700)		(39,666)
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan	154,000		270,000
Bank Credit Facility repayments-revolving loan	(289,000)		(318,000)
Bank Credit Facility repayments-term loan	(2,000)		0
Term Loan Facility borrowings, net of discount	220,500		0
Salishan-Mohegan Bank Credit Facility repayments-revolving loan	(15,250)		0
Line of Credit borrowings	225,215		412,909
Line of Credit repayments	(225,215)		(411,442)
Borrowings from Mohegan Tribe	20,600		600
Payments on long-term debt	(66,454)		(1,000)
Principal portion of relinquishment liability payments	(28,756)		(26,354)
Distributions to Mohegan Tribe	(40,450)		(23,669)
Payments of financing fees	(50,178)		(2,161)
Other cash flows provided by (used in) financing activities	(247)		(1,041)
Net cash flows provided by (used in) financing activities	(97,235)		(97,597)
Net increase (decrease) in cash and cash equivalents	8,356		1,828
Cash and cash equivalents at beginning of period	112,174		63,897
Cash and cash equivalents at end of period	120,530		65,725
Authority [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities	103,561		106,396
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	(34,536)		(27,586)
Other cash flows provided by (used in) investing activities	34,702		22,306
Net cash flows used in investing activities	166		(5,280)
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan	154,000		270,000
Bank Credit Facility repayments-revolving loan	(289,000)		(318,000)
Bank Credit Facility repayments-term loan	(2,000)
Term Loan Facility borrowings, net of discount	220,500
Salishan-Mohegan Bank Credit Facility repayments-revolving loan	0
Line of Credit borrowings	225,215		412,909
Line of Credit repayments	(225,215)		(411,442)
Borrowings from Mohegan Tribe	0
Payments on long-term debt	(66,454)
Principal portion of relinquishment liability payments	(28,756)		(26,354)
Distributions to Mohegan Tribe	(40,450)		(23,669)
Payments of financing fees	(50,178)
Other cash flows provided by (used in) financing activities	5,495		(4,419)
Net cash flows provided by (used in) financing activities	(96,843)		(100,975)
Net increase (decrease) in cash and cash equivalents	6,884		141
Cash and cash equivalents at beginning of period	89,018		39,146
Cash and cash equivalents at end of period	95,902		39,287
MBC 100% Owned Guarantor Subsidiary [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities			(15)
Cash flows provided by (used in) investing activities:
Purchases of property and equipment			(19)
Other cash flows provided by (used in) investing activities			0
Net cash flows used in investing activities			(19)
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan			0
Bank Credit Facility repayments-revolving loan			0
Line of Credit borrowings			0
Line of Credit repayments			0
Principal portion of relinquishment liability payments			0
Distributions to Mohegan Tribe			0
Other cash flows provided by (used in) financing activities			41
Net cash flows provided by (used in) financing activities			41
Net increase (decrease) in cash and cash equivalents			7
Cash and cash equivalents at beginning of period			(49)
Cash and cash equivalents at end of period			(42)
Other 100% Owned Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities			36,562	[1]
Cash flows provided by (used in) investing activities:
Purchases of property and equipment			(12,096)	[1]
Other cash flows provided by (used in) investing activities			70	[1]
Net cash flows used in investing activities			(12,026)	[1]
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan			0	[1]
Bank Credit Facility repayments-revolving loan			0	[1]
Line of Credit borrowings			0	[1]
Line of Credit repayments			0	[1]
Principal portion of relinquishment liability payments			0	[1]
Distributions to Mohegan Tribe			0	[1]
Other cash flows provided by (used in) financing activities			(22,845)	[1]
Net cash flows provided by (used in) financing activities			(22,845)	[1]
Net increase (decrease) in cash and cash equivalents			1,691	[1]
Cash and cash equivalents at beginning of period			24,366	[1]
Cash and cash equivalents at end of period			26,057	[1]
Total Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities	43,100	[2]	36,547
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	(6,102)	[2]	(12,115)
Other cash flows provided by (used in) investing activities	5,182	[2]	70
Net cash flows used in investing activities	(920)	[2]	(12,045)
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan	0	[2]	0
Bank Credit Facility repayments-revolving loan	0	[2]	0
Bank Credit Facility repayments-term loan	0	[2]
Term Loan Facility borrowings, net of discount	0	[2]
Salishan-Mohegan Bank Credit Facility repayments-revolving loan	0	[2]
Line of Credit borrowings	0	[2]	0
Line of Credit repayments	0	[2]	0
Borrowings from Mohegan Tribe	0	[2]
Payments on long-term debt	0	[2]
Principal portion of relinquishment liability payments	0	[2]	0
Distributions to Mohegan Tribe	0	[2]	0
Payments of financing fees	0	[2]
Other cash flows provided by (used in) financing activities	(40,754)	[2]	(22,804)
Net cash flows provided by (used in) financing activities	(40,754)	[2]	(22,804)
Net increase (decrease) in cash and cash equivalents	1,426	[2]	1,698
Cash and cash equivalents at beginning of period	22,931	[2]	24,317
Cash and cash equivalents at end of period	24,357	[2]	26,015
Total Non Guarantor Entities [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities	(2,370)	[3]	(3,852)	[3]
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	0	[3]	0	[3]
Other cash flows provided by (used in) investing activities	(562)	[3]	(519)	[3]
Net cash flows used in investing activities	(562)	[3]	(519)	[3]
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan	0	[3]	0	[3]
Bank Credit Facility repayments-revolving loan	0	[3]	0	[3]
Bank Credit Facility repayments-term loan	0	[3]
Term Loan Facility borrowings, net of discount	0	[3]
Salishan-Mohegan Bank Credit Facility repayments-revolving loan	(15,250)	[3]
Line of Credit borrowings	0	[3]	0	[3]
Line of Credit repayments	0	[3]	0	[3]
Borrowings from Mohegan Tribe	20,600	[3]
Payments on long-term debt	0	[3]
Principal portion of relinquishment liability payments	0	[3]	0	[3]
Distributions to Mohegan Tribe	0	[3]	0	[3]
Payments of financing fees	0	[3]
Other cash flows provided by (used in) financing activities	(2,372)	[3]	4,360	[3]
Net cash flows provided by (used in) financing activities	2,978	[3]	4,360	[3]
Net increase (decrease) in cash and cash equivalents	46	[3]	(11)	[3]
Cash and cash equivalents at beginning of period	225	[3]	434	[3]
Cash and cash equivalents at end of period	271	[3]	423	[3]
Consolidating/Eliminating Adjustments [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows provided by operating activities	0		0
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	0		0
Other cash flows provided by (used in) investing activities	(37,384)		(21,822)
Net cash flows used in investing activities	(37,384)		(21,822)
Cash flows provided by (used in) financing activities:
Bank Credit Facility borrowings-revolving loan	0		0
Bank Credit Facility repayments-revolving loan	0		0
Bank Credit Facility repayments-term loan	0
Term Loan Facility borrowings, net of discount	0
Salishan-Mohegan Bank Credit Facility repayments-revolving loan	0
Line of Credit borrowings	0		0
Line of Credit repayments	0		0
Borrowings from Mohegan Tribe	0
Payments on long-term debt	0
Principal portion of relinquishment liability payments	0		0
Distributions to Mohegan Tribe	0		0
Payments of financing fees	0
Other cash flows provided by (used in) financing activities	37,384		21,822
Net cash flows provided by (used in) financing activities	37,384		21,822
Net increase (decrease) 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

[1] Includes the Pennsylvania Entities, Mohegan Golf, MCV-PA, Mohegan Ventures-NW, MVW, WTG and MTGA Gaming.

[2] Includes the Pennsylvania Entities, MBC, Mohegan Golf, MCV-PA, Mohegan Ventures-NW, MVW, WTG and MTGA Gaming.

[3] Includes Salishan-Mohegan, MG&H and Mohegan Resorts and subsidiaries.