ORGANIZATION (Details)	9 Months Ended
	Jun. 30, 2012
Mohegan Basketball Club, LLC [Member] | WNBA, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	4.20%
Mohegan Commercial Ventures-PA, LLC [Member] | Downs Racing, L.P., Backside, L.P., Mill Creek Land, L.P. and Northeast Concessions, L.P. [Member]
Entity Information [Line Items]
General partnership interest percentage	0.01%
Mohegan Tribal Gaming Authority [Member]
Entity Information [Line Items]
Size of gaming and entertainment complex	185
Mohegan Tribal Gaming Authority [Member] | Downs Racing, L.P., Backside, L.P., Mill Creek Land, L.P. and Northeast Concessions, L.P. [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	99.99%
Downs Racing, L.P. [Member]
Entity Information [Line Items]
Size of gaming and entertainment complex	400
Mohegan Ventures-Northwest, LLC [Member] | Salishan-Mohegan, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	49.15%
Mohegan Tribe of Indians of Connecticut [Member]
Entity Information [Line Items]
Size of tribe reservation	544
Mohegan Tribe of Indians of Connecticut [Member] | Salishan-Mohegan, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	7.85%
Mohegan Tribe of Indians of Connecticut [Member] | Mohegan Gaming & Hospitality, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	51.00%
Mohegan Ventures Wisconsin, LLC [Member] | Wisconsin Tribal Gaming, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	100.00%
MTGA Gaming, LLC [Member] | Mohegan Gaming & Hospitality, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	49.00%
Mohegan Gaming & Hospitality, LLC [Member] | Mohegan Resorts, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	100.00%
Mohegan Resorts, LLC [Member] | Mohegan Resorts Mass, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	100.00%
Mohegan Resorts, LLC [Member] | Mohegan Resorts New York, LLC and Mohegan Gaming New York, LLC [Member]
Entity Information [Line Items]
Membership or limited partnership interest percentage	100.00%