Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
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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

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Liabilities
-URI http://asc.fasb.org/extlink&oid=6509677

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB
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-Section 45
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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-Publisher FASB
-Name Accounting Standards Codification
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-Topic 210
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-Section S99
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- Definition

The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k)(1))
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LONG-TERM DEBT - Promissory Notes (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016	Nov. 30, 2015	Mar. 31, 2013	Mar. 31, 2012
Debt Instrument [Line Items]
Amount outstanding	$ 1,690,763,000
Accrued interest	19,027,000	$ 5,512,000
Current portion of long-term debt - Mohegan Tribe	0	5,500,000
Affiliates \| 2015 Mohegan Tribe Promissory Note \| Mohegan Gaming Advisors
Debt Instrument [Line Items]
Current portion of long-term debt - Mohegan Tribe			$ 22,500,000
Promissory Notes \| 2012 Mohegan Tribe Minor's Trust Promissory Note
Debt Instrument [Line Items]
Loan face amount					$ 20,000,000.0
Accrued interest		2,000
Promissory Notes \| 2013 Mohegan Tribe Promissory Note
Debt Instrument [Line Items]
Loan face amount				$ 7,400,000.0
Accrued interest	$ 1,000	$ 1,000