Debt Instrument, Convertible, Percent of Capital Shares

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- Definition

Debt Instrument, Interest Rate, Effective Percentage, After Sixth Anniversary

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- Definition

Debt Instrument, Interest Rate, Floor

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- Definition

Debt Instrument, Quarterly Installment

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No definition available.

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- Definition

Line of Credit Facility, Increase To Maximum Borrowing Capacity

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- Definition

Loan Guarantee By Third Party

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- Definition

Long-term Debt, Including Due to Related Parties

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Amount after tax of income (loss) from continuing operations attributable to the noncontrolling interest.

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- Definition

Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of the required periodic payments of both interest and principal.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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LONG-TERM DEBT - Credit Facility (Details)				3 Months Ended	5 Months Ended	12 Months Ended
LONG-TERM DEBT - Credit Facility (Details)	Sep. 30, 2019 USD ($)	Jun. 11, 2019 CAD ($)	Jun. 10, 2019 CAD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2019 CAD ($)	Jul. 17, 2019 CAD ($)	Oct. 30, 2018 USD ($)	Sep. 28, 2018 USD ($)	Apr. 30, 2017 USD ($)	Oct. 31, 2016 USD ($)
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,966,906,000			$ 1,966,906,000		$ 1,966,906,000
Revenues				1,388,810,000		1,388,810,000	$ 1,456,980,000	$ 1,485,350,000
MGE Niagara Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	219,000,000		$ 290,000,000	219,000,000		219,000,000			$ 7,600,000.0	$ 10,000,000
Credit Facility \| Bank of America, N.A. Line of Credit
Debt Instrument [Line Items]
Borrowing capacity														$ 25,000,000
Credit facility outstanding	0			0		0
Credit Facility \| Mohegan Expo Credit Facility
Debt Instrument [Line Items]
Borrowing capacity													$ 25,000,000
Credit facility outstanding	$ 102,000,000			$ 102,000,000		$ 102,000,000
Increase to maximum borrowing capacity													8,300,000
Credit Facility \| Term Loan A
Debt Instrument [Line Items]
Borrowing capacity														$ 445,000,000
Interest rate, credit facility	5.80%			5.80%		5.80%			5.80%
Credit facility payment					$ 1,100,000		2,500,000
Credit Facility \| BIA Loan Guaranty Program (Guaranteed Credit Facility)
Debt Instrument [Line Items]
Interest rate, credit facility	4.85%			4.85%		4.85%			4.85%
Credit facility payment						$ 2,600,000
Long-term debt												$ 23,700,000
Credit Facility \| BIA Loan Guaranty Program (Second Guaranteed Credit Facility)
Debt Instrument [Line Items]
Long-term debt											$ 11,300,000
Credit Facility \| MGE Niagara Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 75,500,000	$ 100,000,000		$ 75,500,000		75,500,000
Credit Facility \| MGE Niagara Term Loan Facility
Debt Instrument [Line Items]
Borrowing capacity	75,500,000.0		100,000,000	75,500,000.0		75,500,000.0
Debt instrument, quarterly installment	$ 3,800,000.0		5,000,000	$ 3,800,000.0		$ 3,800,000.0
Debt, weighted average interest rate	4.70%			4.70%		4.70%			4.70%
Commitment fee percentage	0.55%
Credit Facility \| BIA Loan Guaranty Program (Guaranteed Credit Facility And Second Guaranteed Credit Facility)
Debt Instrument [Line Items]
Long-term debt											$ 35,000,000
Debentures Subject to Mandatory Redemption \| MGE Niagara Convertible Debentures
Debt Instrument [Line Items]
Borrowing capacity	$ 30,200,000.0	$ 40,000,000		$ 30,200,000.0		$ 30,200,000.0
Debt instrument, convertible, percent of capital shares		40.00%
Interest rate, credit facility		3.50%
Debt instrument, interest rate, effective percentage, after sixth anniversary		8.00%
Swingline Loan \| MGE Niagara Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	15,100,000.0		20,000,000	15,100,000.0		15,100,000.0
Letter of Credit \| MGE Niagara Credit Facility
Debt Instrument [Line Items]
Borrowing capacity	75,500,000.0		100,000,000	75,500,000.0		75,500,000.0
Revolving Credit Facility \| MGE Niagara Credit Facility
Debt Instrument [Line Items]
Letters of credit issued	26,400,000			26,400,000		26,400,000			$ 35,000,000
Remaining borrowing capacity	124,600,000			124,600,000		124,600,000			$ 165,000,000
Revolving Credit Facility \| MGE Niagara Revolving Facility
Debt Instrument [Line Items]
Borrowing capacity	$ 143,500,000.0		$ 190,000,000	$ 143,500,000.0		143,500,000.0
Mohegan Exposition and Convention Center \| Credit Facility
Debt Instrument [Line Items]
Revenues						6,000,000	647,000
Loss from operations						$ 81,000	$ 1,600,000
Mohegan Exposition and Convention Center \| Credit Facility
Debt Instrument [Line Items]
Investment building and building improvements													$ 80,000,000
Financial guarantee \| Department Of The Interior, Assistant Secretary-Indian Affairs, Division Of Capital Investment \| Credit Facility
Debt Instrument [Line Items]
Loan guarantee by third party												90.00%
Minimum \| Credit Facility \| MGE Niagara Revolving Facility
Debt Instrument [Line Items]
Commitment fee percentage			0.50%
Minimum \| Credit Facility \| MGE Niagara Credit Facility, Prime Rate Loans
Debt Instrument [Line Items]
Debt instrument, interest rate, floor			0.00%
Minimum \| Credit Facility \| MGE Niagara Credit Facility, LIBOR Loans
Debt Instrument [Line Items]
Debt instrument, interest rate, floor			0.00%
Minimum \| Credit Facility \| MGE Niagara Credit Facility, Bankers' Acceptances
Debt Instrument [Line Items]
Debt instrument, interest rate, floor			0.00%
Maximum \| Credit Facility \| MGE Niagara Revolving Facility
Debt Instrument [Line Items]
Commitment fee percentage			0.70%
Leverage-based Margin \| Minimum \| Credit Facility \| MGE Niagara Credit Facility, Prime Rate Loans
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Leverage-based Margin \| Minimum \| Credit Facility \| MGE Niagara Credit Facility, USBR Loans
Debt Instrument [Line Items]
Basis spread on variable rate			1.00%
Leverage-based Margin \| Minimum \| Credit Facility \| MGE Niagara Credit Facility, LIBOR Loans
Debt Instrument [Line Items]
Basis spread on variable rate			2.50%
Leverage-based Margin \| Minimum \| Credit Facility \| MGE Niagara Credit Facility, Bankers' Acceptances
Debt Instrument [Line Items]
Basis spread on variable rate			2.50%
Leverage-based Margin \| Maximum \| Credit Facility \| MGE Niagara Credit Facility, Prime Rate Loans
Debt Instrument [Line Items]
Basis spread on variable rate			2.00%
Leverage-based Margin \| Maximum \| Credit Facility \| MGE Niagara Credit Facility, USBR Loans
Debt Instrument [Line Items]
Basis spread on variable rate			2.00%
Leverage-based Margin \| Maximum \| Credit Facility \| MGE Niagara Credit Facility, LIBOR Loans
Debt Instrument [Line Items]
Basis spread on variable rate			3.50%
Leverage-based Margin \| Maximum \| Credit Facility \| MGE Niagara Credit Facility, Bankers' Acceptances
Debt Instrument [Line Items]
Basis spread on variable rate			3.50%