SUBSEQUENT EVENTS (Details) - USD ($)		12 Months Ended
	Oct. 14, 2016	Sep. 30, 2016	Nov. 30, 2013
Mohegan Tribe
Subsequent Event [Line Items]
Term of lease		25 years
Renewable period of additional term		25 years
Credit Facility | Senior Secured Credit Facilities
Subsequent Event [Line Items]
Principal amount			$ 955,000,000.0
Subsequent Event
Subsequent Event [Line Items]
Transaction costs	$ 88,300,000
Subsequent Event | Existing Debt That Was Refinanced
Subsequent Event [Line Items]
Deferred debt issuance costs, premiums and discounts	$ 23,800,000
Subsequent Event | Credit Facility | Mohegan Tribe | Amended and Restated Land Lease Agreement
Subsequent Event [Line Items]
Term of lease	25 years
Renewable period of additional term	25 years
Subsequent Event | Credit Facility | Bank of America, N.A. Line of Credit
Subsequent Event [Line Items]
Borrowing capacity	$ 25,000,000
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility
Subsequent Event [Line Items]
Borrowing capacity	$ 170,000,000
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Federal Funds Rate
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	0.50%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | LIBOR
Subsequent Event [Line Items]
Variable rate, minimum (as a percent)	0.00%
Basis spread on variable rate (as a percent)	1.00%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Maximum
Subsequent Event [Line Items]
Fee assessed on unused revolving credit (as a percent)	0.50%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Maximum | LIBOR
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	3.25%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Maximum | Eurodollar
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	4.25%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Minimum
Subsequent Event [Line Items]
Fee assessed on unused revolving credit (as a percent)	0.375%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Minimum | LIBOR
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	1.50%
Subsequent Event | Credit Facility | Revolving Credit Facility | New Revolving Facility | Minimum | Eurodollar
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	2.50%
Subsequent Event | Credit Facility | Credit Facility | Senior Secured Credit Facilities
Subsequent Event [Line Items]
Borrowing capacity	$ 1,400,000,000
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility
Subsequent Event [Line Items]
Borrowing capacity	$ 445,000,000
Interest rate, year one (as a percent)	15.00%
Interest rate, year two (as a percent)	15.00%
Interest rate, year three (as a percent)	10.00%
Amortization of principal, percentage, annual (as a percent)	7.50%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | Federal Funds Rate
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	0.50%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | LIBOR
Subsequent Event [Line Items]
Variable rate, minimum (as a percent)	0.00%
Basis spread on variable rate (as a percent)	1.00%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | Maximum | LIBOR
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	3.25%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | Maximum | Eurodollar
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	4.25%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | Minimum | LIBOR
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	1.50%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan A Facility | Minimum | Eurodollar
Subsequent Event [Line Items]
Variable rate, leverage based margin (as a percent)	2.50%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan B Facility
Subsequent Event [Line Items]
Borrowing capacity	$ 785,000,000
Amortization of principal, percentage, annual (as a percent)	1.00%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan B Facility | LIBOR
Subsequent Event [Line Items]
Variable rate, minimum (as a percent)	1.00%
Basis spread on variable rate (as a percent)	4.50%
Subsequent Event | Credit Facility | Credit Facility | New Term Loan B Facility | Base Rate
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	3.50%
Subsequent Event | Senior Unsecured Notes | 2016 Senior Unsecured Notes
Subsequent Event [Line Items]
Principal amount	$ 500,000,000
Interest rate (as a percent)	7.875%
Redemption price (as a percent)	100.00%
Subsequent Event | Senior Unsecured Notes | 2016 Senior Unsecured Notes | Redeemable Rate Prior to October 15, 2019
Subsequent Event [Line Items]
Redemption price (as a percent)	100.00%
Subsequent Event | Senior Unsecured Notes | 2016 Senior Unsecured Notes | Redeemable Rate Upon Change of Control
Subsequent Event [Line Items]
Redemption price (as a percent)	101.00%
Subsequent Event | Senior Unsecured Notes | 2016 Senior Unsecured Notes | Redeemable Rate Upon Certain Asset Sales
Subsequent Event [Line Items]
Redemption price (as a percent)	100.00%