RELATED PARTY TRANSACTIONS (Details) (USD $)	3 Months Ended		9 Months Ended					1 Months Ended	5 Months Ended	1 Months Ended		5 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Promissory Notes 2013 Mohegan Tribe Promissory Note	Mar. 29, 2013 Promissory Notes 2013 Mohegan Tribe Promissory Note	Sep. 30, 2009 Promissory Notes Mohegan Tribe Promissory Note, 2009	Feb. 28, 2013 Mohegan Gaming & Hospitality, LLC Mohegan Tribe of Indians of Connecticut	Feb. 28, 2013 Mohegan Gaming & Hospitality, LLC Mohegan Tribe of Indians of Connecticut	Mar. 31, 2013 Mohegan Gaming & Hospitality, LLC MTGA Gaming, LLC	Feb. 28, 2013 Mohegan Gaming & Hospitality, LLC MTGA Gaming, LLC	Feb. 28, 2013 Mohegan Gaming & Hospitality, LLC MTGA Gaming, LLC	Jun. 30, 2013 Mohegan Tribe of Indians of Connecticut	Jun. 30, 2012 Mohegan Tribe of Indians of Connecticut	Jun. 30, 2013 Mohegan Tribe of Indians of Connecticut	Jun. 30, 2012 Mohegan Tribe of Indians of Connecticut	Jun. 30, 2013 Mohegan Tribal Utility Authority	Jun. 30, 2012 Mohegan Tribal Utility Authority	Jun. 30, 2013 Mohegan Tribal Utility Authority	Jun. 30, 2012 Mohegan Tribal Utility Authority
Related Party Transaction [Line Items]
Distributions to Mohegan Tribe	$ 15,000,000	$ 12,500,000	$ 35,000,000	$ 40,450,000									$ 15,000,000	$ 12,500,000	$ 35,000,000	$ 40,500,000
Expenses for services provided to related party													7,000,000	6,800,000	21,000,000	20,300,000
Utilities purchased from related party																	3,900,000	4,200,000	12,900,000	14,200,000
Membership or limited partnership interest percentage								51.00%	51.00%	100.00%	49.00%	49.00%
Loan face amount					7,400,000	7,400,000	10,000,000
Incurred interest expense associated with a related party debt													$ 741,000	$ 832,000	$ 2,300,000	$ 1,700,000