Mohegan Tribal Gaming Authority 10-K 20 Dec 22 2022 FY Annual report Financial data

Cover

Cover	12 Months Ended
	Sep. 30, 2022 USD ($) shares
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2022
Current Fiscal Year End Date	--09-30
Document Transition Report	false
Entity File Number	033-80655
Entity Registrant Name	MOHEGAN TRIBAL GAMING AUTHORITY
Entity Tax Identification Number	06-1436334
Entity Address, Address Line One	One Mohegan Sun Boulevard
Entity Address, City or Town	Uncasville
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06382
City Area Code	860
Local Phone Number	862-8000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Central Index Key	0001005276
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
No Trading Symbol Flag	true
Amendment Flag	false
Entity Common Stock, Shares Outstanding | shares	0
Entity Public Float | $	$ 0

Audit Information

Audit Information	12 Months Ended
	Sep. 30, 2022
Audit Information [Abstract]
Auditor Firm ID	34
Auditor Name	Deloitte & Touche LLP
Auditor Location	Hartford, Connecticut

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 164,671	$ 149,822
Restricted cash and cash equivalents	8,838	5,259
Accounts receivable, net	45,995	40,772
Inventories	19,662	18,455
Due from Ontario Lottery and Gaming Corporation	8,906	16,711
Contract asset	35,478	32,665
Other current assets	35,551	56,466
Total current assets	319,101	320,150
Restricted cash and cash equivalents	347,005	9,616
Property and equipment, net	1,643,790	1,531,619
Right-of-use assets	305,480	362,008
Intangible assets, net	311,526	327,255
Contract asset, net of current portion	51,979	87,262
Notes receivable	2,514	2,514
Other assets, net	67,522	89,453
Total assets	3,048,917	2,729,877
Current liabilities:
Current portion of long-term debt	47,402	80,276
Current portion of finance lease obligations	4,491	5,836
Current portion of operating lease obligations	5,473	9,616
Trade payables	16,465	23,675
Accrued payroll	64,332	53,352
Construction payables	61,166	53,120
Accrued interest payable	38,947	37,546
Due to Ontario Lottery and Gaming Corporation	3,582	22,253
Other current liabilities	165,048	159,802
Total current liabilities	406,906	445,476
Long-term debt, net of current portion	2,304,551	1,858,478
Finance lease obligations, net of current portion	107,977	109,189
Operating lease obligations, net of current portion	357,139	410,090
Warrants and put option liabilities	47,300	0
Accrued payroll	0	3,529
Other long-term liabilities	38,943	36,357
Total liabilities	3,262,816	2,863,119
Commitments and Contingencies
Capital:
Retained deficit	(130,551)	(133,087)
Accumulated other comprehensive loss	(88,146)	(2,065)
Total capital attributable to Mohegan Tribal Gaming Authority	(218,697)	(135,152)
Non-controlling interests	4,798	1,910
Total capital	(213,899)	(133,242)
Total liabilities and capital	$ 3,048,917	$ 2,729,877

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Net revenues	$ 1,590,511	$ 1,228,833	$ 1,114,962
Operating costs and expenses:
Advertising, general and administrative, including related party transactions of $48,723, $35,155 and $28,873, respectively	309,160	231,084	226,588
Corporate, including related party transactions of $7,551, $6,761 and $7,221, respectively	65,034	61,301	44,177
Depreciation and amortization	102,625	105,335	109,067
Impairment of tangible assets	23,565	0	0
Impairment of intangible assets	12,869	0	126,596
Other, net	19,106	38,032	15,616
Total operating costs and expenses	1,344,277	1,044,376	1,148,179
Income (loss) from operations	246,234	184,457	(33,217)
Other income (expense):
Interest income	168	123	1,754
Interest expense, net	(206,314)	(171,844)	(134,925)
Gain (loss) on modification and early extinguishment of debt	630	(21,793)	(2,888)
Gain on fair value adjustment	43,020	0	0
Other, net	268	10,057	566
Total other expense	(162,228)	(183,457)	(135,493)
Income (loss) before income tax	84,006	1,000	(168,710)
Income tax benefit (provision)	(8,810)	6,353	6,694
Net income (loss)	75,196	7,353	(162,016)
Income attributable to non-controlling interests	(545)	(622)	(139)
Net income (loss) attributable to Mohegan Tribal Gaming Authority	74,651	6,731	(162,155)
Comprehensive income (loss):
Foreign currency translation adjustment	(86,081)	(929)	7,303
Other	0	17	(48)
Other comprehensive income (loss)	(86,081)	(912)	7,255
Other comprehensive income attributable to non-controlling interests	0	(1,376)	(399)
Other comprehensive income (loss) attributable to Mohegan Tribal Gaming Authority	(86,081)	(2,288)	6,856
Comprehensive income (loss) attributable to Mohegan Tribal Gaming Authority	(11,430)	4,443	(155,299)
Gaming
Revenues:
Revenues	1,122,864	910,378	799,647
Operating costs and expenses:
Operating costs and expenses	573,561	470,723	444,875
Food and beverage
Revenues:
Revenues	134,724	73,631	103,678
Operating costs and expenses:
Operating costs and expenses	111,379	63,414	91,662
Hotel
Revenues:
Revenues	115,828	84,307	69,113
Operating costs and expenses:
Operating costs and expenses	47,689	36,097	35,578
Retail, entertainment and other
Revenues:
Revenues	217,095	160,517	142,524
Operating costs and expenses:
Operating costs and expenses	$ 79,289	$ 38,390	$ 54,020

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Advertising, general and administrative	$ 309,160	$ 231,084	$ 226,588
Corporate	65,034	61,301	44,177
Gaming
Operating costs and expenses	573,561	470,723	444,875
Hotel
Operating costs and expenses	47,689	36,097	35,578
Affiliated entity
Advertising, general and administrative	48,723	35,155	28,873
Corporate	7,551	6,761	7,221
Affiliated entity | Gaming
Operating costs and expenses	3,235	1,513	2,265
Affiliated entity | Hotel
Operating costs and expenses	$ 8,644	$ 8,644	$ 8,644

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	$ (133,242)	$ (67,989)	$ 137,433
Net income (loss)	75,196	7,353	(162,016)
Foreign currency translation adjustment	(86,081)	(929)	7,303
Other	2,343	(7,551)	(48)
Total capital at end of period	(213,899)	(133,242)	(67,989)
Retained Earnings (Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	(133,087)	(75,692)	137,124
Net income (loss)	74,651	6,731	(162,155)
Total capital at end of period	(130,551)	(133,087)	(75,692)
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	0	0	0
Total capital at end of period	0	0	0
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	(2,065)	223	(6,633)
Foreign currency translation adjustment	(86,081)	(2,305)	6,904
Other		17	(48)
Total capital at end of period	(88,146)	(2,065)	223
Total Capital Attributable to Mohegan Tribal Gaming Authority
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	(135,152)	(75,469)	130,491
Net income (loss)	74,651	6,731	(162,155)
Foreign currency translation adjustment	(86,081)	(2,305)	6,904
Other		17	(48)
Total capital at end of period	(218,697)	(135,152)	(75,469)
Non-controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total capital at beginning of period	1,910	7,480	6,942
Net income (loss)	545	622	139
Foreign currency translation adjustment		1,376	399
Other	2,343	(7,568)
Total capital at end of period	4,798	1,910	7,480
Mohegan Tribe
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from Mohegan Tribe	325	2,814	10,000
Distributions to Mohegan Tribe	(71,400)	(66,000)	(60,000)
Mohegan Tribe | Retained Earnings (Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from Mohegan Tribe			10,000
Distributions to Mohegan Tribe	(71,075)	(63,186)	(60,000)
Mohegan Tribe | Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from Mohegan Tribe	325	2,814
Distributions to Mohegan Tribe	(325)	(2,814)
Mohegan Tribe | Total Capital Attributable to Mohegan Tribal Gaming Authority
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from Mohegan Tribe	325	2,814	10,000
Distributions to Mohegan Tribe	(71,400)	(66,000)	(60,000)
Salishan Company, LLC
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to Salishan Company, LLC	(1,040)	(940)	(661)
Salishan Company, LLC | Retained Earnings (Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to Salishan Company, LLC	(1,040)	(940)	(661)
Salishan Company, LLC | Total Capital Attributable to Mohegan Tribal Gaming Authority
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions to Salishan Company, LLC	$ (1,040)	$ (940)	$ (661)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Cash flows provided by operating activities:
Net income (loss)	$ 75,196	$ 7,353	$ (162,016)
Adjustments to reconcile net income (loss) to net cash flows provided by operating activities:
Depreciation and amortization	102,625	105,335	109,067
Non-cash operating lease expense	8,335	10,911	12,465
Accretion of discounts	1,984	1,670	1,109
Amortization of discounts and debt issuance costs	15,739	19,415	19,205
Paid-in-kind interest	35,059	0	0
Gain on fair value adjustment	(43,020)	0	0
(Gain) loss on modification and early extinguishment of debt	(704)	21,418	0
Provision for losses on receivables	6,095	4,709	4,592
Deferred income taxes	9,102	(6,716)	(7,049)
Impairment charges	36,434	0	126,596
Other, net	4,746	(6,676)	1,585
Changes in operating assets and liabilities, net of effect of the Niagara Resorts acquisition:
Accounts receivable, net	(12,618)	(1,617)	4,423
Inventories	(1,419)	(1,518)	1,435
Due from Ontario Lottery and Gaming Corporation	7,463	(13,768)	7,571
Contract asset	24,817	16,244	(77,026)
Other assets	21,789	(772)	7,797
Trade payables	(7,115)	126	5,125
Accrued interest payable	1,899	11,176	6,550
Due to Ontario Lottery and Gaming Corporation	(18,397)	5,835	(1,983)
Operating lease obligations	(4,345)	13,800	3,105
Other liabilities	24,650	40,842	(14,339)
Net cash flows provided by operating activities	288,315	227,767	48,212
Cash flows used in investing activities:
Purchases of property and equipment	(287,211)	(48,263)	(149,031)
Acquisition of the Niagara Resorts, net of cash acquired	0	0	(1,666)
Other, net	(2,077)	(1,078)	(3,929)
Net cash flows used in investing activities	(294,899)	(49,341)	(173,356)
Cash flows provided by (used in) financing activities:
Proceeds from revolving credit facilities	1,064,176	1,056,296	730,772
Repayments on revolving credit facilities	(1,125,253)	(1,201,511)	(609,345)
Proceeds from issuance of long-term debt	698,358	1,223,802	7,845
Repayments of long-term debt	(55,884)	(1,143,507)	(76,458)
Payments on finance lease obligations	(5,553)	(1,145)	(1,298)
Contributions from affiliates	325	2,814	10,000
Distributions to affiliates	(72,440)	(66,940)	(60,661)
Payments of financing fees	(66,301)	(24,586)	(13,752)
Other, net	736	(1,607)	(1,527)
Net cash flows provided by (used in) financing activities	438,164	(156,384)	(14,424)
Net increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	431,580	22,042	(139,568)
Effect of exchange rate on cash, cash equivalents, restricted cash and restricted cash equivalents	(75,763)	586	908
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	164,697	142,069	280,729
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of year	520,514	164,697	142,069
Reconciliation of cash, cash equivalents, restricted cash and restricted cash equivalents to the consolidated balance sheets:
Cash and cash equivalents	164,671	149,822	112,665
Restricted cash and cash equivalents, current	8,838	5,259	934
Restricted cash and cash equivalents, non-current	347,005	9,616	28,470
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total	520,514	164,697	142,069
Supplemental disclosures:
Cash paid for interest	165,192	139,267	114,873
Non-cash transactions:
Right-of-use assets additions (reductions)	(26,009)	(53,392)	426,403
Operating lease obligations additions (reductions)	(26,009)	(43,146)	426,548
Paid-in-kind interest capitalized	7,390	0	0
Paid-in-kind interest converted to debt	36,998	0	0
Increase in construction payables	8,046	22,052	38,172
Finance lease assets and obligations	0	79,187	2,879
Prior senior secured credit facility reduction	0	0	10,514
Derecognition of build-to-suit asset and liability	0	0	90,675
Inspire Korea Project
Cash flows used in investing activities:
Investments	(5,611)	0	(7,980)
Mohegan Hotel Holding, LLC
Cash flows used in investing activities:
Investments	$ 0	$ 0	$ (10,750)

Organization

Organization	12 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Organization We were established by the Mohegan Tribe of Indians of Connecticut (the “Mohegan Tribe”) in July 1995. We have the exclusive authority to conduct and regulate gaming activities for the Mohegan Tribe on tribal lands and the non-exclusive authority to conduct such activities elsewhere. We are primarily engaged in the ownership, operation and development of integrated entertainment facilities. We currently own two facilities in the United States and operate or manage five other facilities in the United States and Canada. We are also currently developing a facility in South Korea, the Inspire Entertainment Resort located adjacent to the Incheon International Airport (“Inspire Korea”). Our Properties Mohegan Sun We own Mohegan Sun which is located on an approximately 196-acre site on the Mohegan Tribe's reservation overlooking the Thames River. The facility is one of two authorized gaming and entertainment facilities in the state of Connecticut and competes primarily with gaming operations in Massachusetts, Rhode Island and New York. Mohegan Pennsylvania We own Mohegan Pennsylvania which is located on an approximately 400-acre site in Wilkes-Barre, Pennsylvania, and features live harness racing. The facility is one of 16 gaming and entertainment facilities in the state of Pennsylvania and competes primarily with facilities in Bethlehem and Mount Pocono. Inspire Korea In February 2016, Inspire Integrated Resort Co., Ltd. (“Inspire Integrated Resort”), a wholly-owned subsidiary, was awarded pre-approval for a gaming license to be issued upon completion of the construction of Inspire Korea in South Korea. This license would permit gaming only by holders of non-Korean passports. In August 2016, we entered into an agreement with the Incheon International Airport Authority for the long-term lease and development of approximately 4.4 million square meters of land located directly adjacent to Terminal 2 of the Incheon International Airport. The integrated entertainment resort phase of Inspire Korea is planned to open in late 2023, with the casino anticipated to open in January 2024. Inspire Korea will compete primarily with another casino resort located in Incheon and several other smaller casino-only operations located in downtown Seoul. Niagara Resorts We operate the Niagara Resorts under a Casino Operating and Services Agreement. The Niagara Resorts include Fallsview Casino Resort, Casino Niagara and the OLG Stage at Fallsview Casino, all in Niagara Falls, Canada. Fallsview Casino Resort, which overlooks the iconic Horseshoe Falls, and Casino Niagara are the only two gaming and entertainment facilities in Niagara Falls, Canada. The Niagara Resorts compete primarily with facilities in Toronto, Ontario and Niagara Falls, New York. Mohegan Casino Las Vegas We operate Mohegan Casino Las Vegas, a more than 60,000-square-foot gaming facility at Virgin Hotels Las Vegas, in Las Vegas, Nevada. The integrated resort, including Mohegan Casino Las Vegas, competes primarily with resorts and casinos in Las Vegas. ilani Casino Resort We developed and currently operate ilani Casino Resort in Clark County, Washington, a gaming and entertainment facility owned by the federally-recognized Cowlitz Indian Tribe and the Cowlitz Tribal Gaming Authority. ilani Casino Resort is located approximately 16 miles north of Portland with direct access to Interstate 5. Resorts Casino Hotel We manage Resorts Casino Hotel and own 10% of the casino's holding company and its subsidiaries, including those conducting or licensing iGaming and retail sports wagering in the state of New Jersey. Resorts Casino Hotel, the first casino hotel in Atlantic City, New Jersey, opened in 1978, becoming the first legal casino outside of the state of Nevada. Resorts Casino Hotel is one of nine casinos operating in Atlantic City and competes primarily with resorts and casinos in Atlantic City, New Jersey, Pennsylvania and New York. Impact of the COVID-19 Pandemic In March 2020, the World Health Organization declared the outbreak of COVID-19 a global pandemic and the United States federal government declared it a national emergency. The spread of COVID-19 has affected most segments of the global economy, including our operations. In March 2020, we temporarily suspended operations at our properties in the United States and Canada to ensure the health and safety of our employees, customers and the surrounding communities in which we operate, consistent with directives from various governmental bodies. All of our properties in the United States were reopened by July 2020. Our properties in Canada reopened in July 2021, but were temporarily closed again from January 5, 2022 through January 30, 2022, due to a resurgence of COVID-19 at that time. While we are operating at full capacity as of the filing of this Annual Report on Form 10-K, COVID-19 has had a significant impact on our operations, the full extent of which depends on future developments which are highly uncertain and cannot be predicted with confidence. Such developments include the following: • the duration of COVID-19 or the extent of any resurgence or variants of COVID-19 in areas where we operate or where our customers are located; • the manner in which our customers, suppliers and other third parties respond to COVID-19, including the perception of safety and health measures we implemented; • new information that may emerge concerning the severity of COVID-19 and the actions to contain or treat it; • general, local or national economic conditions; and • consumer confidence. Accordingly, we cannot reasonably estimate the extent to which COVID-19 will further impact our future financial condition, results of operations and cash flows.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Principles of Consolidation The accompanying Financial Statements include the accounts of the Company and its majority and wholly-owned subsidiaries and entities. The accounts of MGE Niagara Entertainment Inc. (“MGE Niagara”) are consolidated into the accounts of the Company as MGE Niagara is a variable interest entity and the Company is deemed to be the primary beneficiary of MGE Niagara. In consolidation, all intercompany balances and transactions are eliminated. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“US GAAP”) requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. Actual amounts could differ from those estimates. Cash and Cash Equivalents Cash and cash equivalents consist of deposits that can be redeemed on demand and highly liquid investments with original maturities of three months or less from the date of purchase. Cash and cash equivalents include all operating cash and in-house funds. Restricted Cash and Cash Equivalents Restricted cash and cash equivalents consist of deposits that are restricted as to their withdrawal or use. Restricted cash and cash equivalents primarily include cash intended to be used for Inspire Korea. Accounts Receivable Accounts receivable consists of casino receivables, which represent credit extended to approved casino customers, and hotel and other non-gaming receivables. We maintain a reserve for doubtful collection of these receivables, which primarily relates to casino receivables. Inventories Inventories are stated at the lower of cost or net realizable value and consist primarily of food and beverage, retail, hotel and operating supplies. Cost is determined using the average cost method. Due from/to Ontario Lottery and Gaming Corporation On a bi-weekly basis, the Ontario Lottery and Gaming Corporation remits estimated amounts due to us pursuant to the terms of the Casino Operating and Services Agreement. Any such remittance that is due, but not yet received, is recorded within due from Ontario Lottery and Gaming Corporation. Differences between actual and estimated amounts due are separately settled with the Ontario Lottery and Gaming Corporation on an annual basis, however, a quarterly interim reconciliation process is available. Any settlement amount owed to the Ontario Lottery and Gaming Corporation is recorded within due to Ontario Lottery and Gaming Corporation. Property and Equipment Property and equipment are stated at cost. Depreciation is recognized over the estimated useful lives of the assets, other than land, on a straight-line basis. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives of the improvements. Estimated useful lives by asset categories are as follows: Buildings and land improvements 40 years Furniture and equipment 3 - 7 years The costs of significant improvements are capitalized. Costs of normal repairs and maintenance are expensed as incurred. Property and equipment are assessed for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. If it is determined that the carrying amounts may not be recoverable based on current and future levels of income and cash flows, as well as other factors, an impairment charge will be recognized at such time. Intangible Assets Intangible assets consist primarily of Mohegan Sun's trademark and Mohegan Pennsylvania's various gaming licenses. These intangible assets all have indefinite lives. Intangible assets with indefinite lives are assessed at least annually for impairment by comparing their fair value to their carrying value. However, these intangible assets may be assessed more frequently for impairment if events or changes in circumstances, such as declines in revenues, earnings and cash flows or material adverse changes in business climate, indicate that their carrying value may be impaired. Intangible assets with finite lives are assessed for impairment whenever events or circumstances indicate that their carrying value may not be recoverable. If necessary, an impairment charge is recognized when the carrying value of the asset (asset group) exceeds the estimated undiscounted cash flows expected from the use and eventual disposition of the asset (asset group). The amount of the impairment charge, if any, is calculated as the excess of the asset’s (asset group’s) carrying value over its fair value. The evaluation of intangible assets for impairment requires the use of estimates about future cash flows. Such estimates are, by their nature, subjective. Actual results may differ materially from our estimates and could result in impairment charges in the future. Debt Issuance Costs Debt issuance costs are amortized to interest expense based on the effective interest method. Self-insurance Reserves We are self-insured up to certain limits for costs associated with workers’ compensation, general liability and employee medical coverage. Insurance claims and reserves include estimated settlements of known claims, as well as estimates of incurred but not reported claims. These reserves are recorded within other current liabilities. In estimating self-insurance reserves, we consider historical loss experiences and expected levels of costs per claim. Claims are accounted for based on estimates of undiscounted claims, including claims incurred but not reported. Leases We account for leases in accordance with guidance provided by Accounting Standards Updates (“ASU”) No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires, among other things, lessees to recognize a right-of-use asset and liability for leases with terms in excess of 12 months. We determine if a contract is, or contains, a lease at its inception or at the time of any modification. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Control over the use of the identified asset requires that the lessee has both: (i) the right to obtain substantially all of the economic benefits from the use of the asset and (ii) the right to direct the use of the asset. Right-of-use operating and finance lease assets and liabilities are recognized on the respective lease commencement date based on the present value of future lease payments over the expected lease term. An expected lease term includes any option to extend or terminate the lease if it is reasonably certain that we will exercise such option. We utilize the incremental borrowing rate (“IBR”) applicable to the lease as determined at the lease commencement date to calculate the present value of future lease payments. The applicable IBR is determined based on the treasury group to which the leasing entity belongs and that group’s estimated interest rate for collateralized borrowings over a similar term as the future lease payments. Operating lease expense for fixed lease payments is recognized on a straight-line basis over the expected lease term. Finance lease assets are recorded within property and equipment, net and are amortized on a straight-line basis over the related lease term. Warrants and Put Option We account for our warrants and put option liabilities in accordance with guidance provided by Accounting Standards Codification (“ASC”) Topic 815, “Derivatives and Hedging” (“ASC 815”). Under ASC 815 the warrants and put option do not meet the criteria for equity treatment. Accordingly, these instruments are classified as long-term liabilities and are re-measured at their estimated fair values at each reporting date. The estimated fair value of the warrants and put option was determined by utilizing the income approach (discounted cash flow method) and a binomial lattice model. Revenue Recognition Our revenues from contracts with customers consist of gaming, including racing and online casino gaming and sports wagering, food and beverage, hotel, retail, entertainment and convention related transactions, as well as management and development services related to management and development contracts with third-party facilities. The transaction price in a gaming contract is the difference between gaming wins and losses, not the total amount wagered. The transaction price in a racing contract, inclusive of live racing at our facilities, as well as import and export arrangements, is the commission received from the pari-mutuel pool less contractual fees and obligations, which primarily consist of purse funding requirements, simulcasting fees, tote fees and certain pari-mutuel taxes that are directly related to racing operations. The transaction price in online casino gaming and sports wagering is the share of the revenues that we expect to collect as the agent. The transaction prices in food and beverage, hotel, retail, entertainment and convention contracts are the net amounts collected for such goods and services. Sales and other taxes collected on behalf of governmental authorities are accounted for on a net basis and are not recorded within revenues or expenses. The transaction prices in management and development service contracts are the amounts collected for services rendered in accordance with contractual terms, inclusive of reimbursable costs and expenses. We recognize gaming revenues as amounts wagered less prizes paid out. Gaming transactions involve two performance obligations for customers participating in our loyalty reward programs and a single performance obligation for customers that do not participate. We apply a practical expedient by accounting for gaming contracts on a portfolio basis, as such contracts share similar characteristics. The effects on our Financial Statements under this approach do not differ materially versus under an individual contract basis. We utilize a deferred revenue model to reduce gaming revenues by the estimated fair value of loyalty points earned by customers. Revenues allocated to gaming performance obligations are recognized when gaming occurs as such activities are settled immediately. Revenues allocated to the loyalty points deferred revenue liability are recognized when loyalty points are redeemed. The deferred revenue liability is based on the estimated stand-alone selling price of loyalty points earned after factoring in the likelihood of redemption. Food and beverage, hotel, retail, entertainment and convention transactions have been determined to be separate, stand-alone performance obligations and revenues for such contracts are recognized when the related goods and services are transferred to customers. Revenues from contracts which include a combination of these transactions are allocated on a pro rata basis based on the stand-alone selling price of the goods and services. Revenues from food and beverage, hotel, retail, entertainment and other services, including revenues associated with loyalty point redemptions, are recognized at the time such service is performed. Minimum rental revenues are recognized on a straight-line basis over the terms of the related leases. Percentage rental revenues are recognized in the periods in which the tenants exceed their respective percentage rent thresholds. Management and development services have been determined to be separate, stand-alone performance obligations, and revenues for such contracts are recognized when the related services are performed. We recognize management fees pursuant to the respective management agreement, usually as a percentage of the managed entity’s earnings during the period. Development fees are recognized pursuant to the respective development agreement, typically as a percentage of construction costs incurred during the period. Management and development fees are recorded within retail, entertainment and other revenues. We operate the Niagara Resorts under the terms of a 21-year Casino Operating and Services Agreement with the Ontario Lottery and Gaming Corporation. Pursuant to the laws of Canada and the Province of Ontario, the Ontario Lottery and Gaming Corporation retains legal authority to conduct and manage lottery schemes on behalf of the Province of Ontario. We are acting as a service provider to the Ontario Lottery and Gaming Corporation under the Casino Operating and Services Agreement and, therefore, recognize gaming revenues net of amounts due to the Ontario Lottery and Gaming Corporation. We retain all non-gaming revenues and recognize these amounts on a gross basis. The Casino Operating and Services Agreement represents a series of distinct goods and services and, therefore, is deemed to be a single performance obligation. The transaction price under the Casino Operating and Services Agreement includes both fixed and variable consideration. The fixed consideration is comprised of an annual service provider fee and additional consideration for permitted capital expenditures up to an annual cap. The fixed consideration is recognized as revenue on a straight-line basis over the term of the Casino Operating and Services Agreement. The variable consideration consists of 70% of Gaming Revenues (as defined under the Casino Operating and Services Agreement), in excess of a guaranteed annual minimum amount payable to the Ontario Lottery and Gaming Corporation (the “Threshold”). Annual Threshold amounts are contractually established and vary from year to year. If gaming revenues are less than the Threshold for any given year, we are obligated to make a payment to cover the related shortfall. The variable consideration is recognized as revenue as services are rendered under the terms of the Casino Operating and Services Agreement. We measure our progress in satisfying this performance obligation based on the output method, which aligns with the benefits provided to the Ontario Lottery and Gaming Corporation. Projected revenues are estimated based on the most likely amount within a range of possible outcomes to the extent that a significant reversal in the amount of cumulative revenues recognized is not probable of occurring. The difference between revenues recognized and cash received is recorded as an asset or a liability and classified as short-term or long-term based upon the anticipated timing of reversal. In the event an asset is recorded, such asset is assessed at least annually for impairment. In June 2021, the Casino Operating and Services Agreement was amended to provide for, among other things, a three-year replacement of the annual Threshold, subject to certain conditions, with a fixed revenue share percentage. The annual Threshold may be reinstated at any time during this three-year period under certain conditions specified in the amended Casino Operating and Services Agreement. Gaming Costs and Expenses Gaming costs and expenses primarily represent portions of gaming revenues that must be paid to the State of Connecticut and the Pennsylvania Gaming Control Board (the “PGCB”). Gaming costs and expenses also include, among other things, payroll costs, expenses associated with the operation of slot machines, table games, poker, online casino gaming, live harness racing, racebook and sportsbook, certain marketing expenditures and promotional expenses related to loyalty point and coupon redemptions. Advertising Costs and Expenses Production costs are expensed the first time the advertisement takes place. Prepaid rental fees associated with billboard advertisements are capitalized and amortized over the terms of the related agreements. Advertising costs and expenses totaled $36.1 million, $19.3 million and $22.5 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. Pre-opening Costs and Expenses Costs of start-up activities are expensed as incurred. Pre-opening costs and expenses totaled $15.8 million, $37.1 million and $15.6 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively, and were recorded within other, net. Income Taxes Similar to other sovereign governments, the Mohegan Tribe and its entities, including the Company, are not subject to United States federal income taxes. However, certain of our non-tribal entities are subject to income taxes in various domestic and foreign jurisdictions. We account for income taxes in accordance with guidance provided by ASC Topic 740, “Income Taxes” (“ASC 740”). Under ASC 740, deferred tax assets and liabilities are determined based on the differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities, and are measured at the prevailing enacted tax rates that will be in effect when these differences are settled or realized. ASC 740 requires that deferred tax assets be reduced by a valuation allowance if it is more-likely-than-not that some portion, or all, of the deferred tax assets will not be realized. ASC 740 also creates a single model to address uncertainty in tax positions and clarifies the accounting for uncertainty in income taxes recognized in an entity’s financial statements by prescribing the minimum recognition threshold a tax position is required to meet before being recognized in the entity's financial statements. In addition, ASC 740 provides guidance with respect to de-recognition, measurement, classification, interest and penalties, accounting in interim periods and disclosure requirements. Our uncertain tax positions are insignificant. Foreign Currency The financial position and operating results of foreign operations are consolidated using the local currency as the functional currency. Local currency assets and liabilities are translated at the end-of-period rates, while local currency revenues and expenses are translated at the average rates in effect during the period. Local currency equity is translated at historical rates and the resulting cumulative translation adjustments are recorded as a component of accumulated other comprehensive income or loss. Fair Value of Financial Instruments We apply the following fair value hierarchy, which prioritizes the inputs utilized to measure fair value into three levels: • Level 1 - Quoted prices for identical assets or liabilities in active markets; • Level 2 - Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets or valuations based on models where the significant inputs are observable or can be corroborated by observable market data; and • Level 3 - Valuations based on models where the significant inputs are unobservable. The unobservable inputs reflect our estimates or assumptions that market participants would utilize in pricing such assets or liabilities. Our assessment of the significance of a particular input requires judgment and may affect the valuation of financial assets and liabilities and their placement within the fair value hierarchy. The carrying amount of cash and cash equivalents, restricted cash and cash equivalents, receivables and trade payables approximates fair value. The estimated fair value of our long-term debt is primarily based on Level 2 inputs (refer to Note 6). Recently Issued Accounting Pronouncements ASU 2019-12 In December 2019, the Financial Accounting Standards Board (the “FASB”) issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes” (“ASU 2019-12”), which simplifies various aspects related to the accounting for income taxes. This new standard removes certain exceptions to the general principles in ASU 2019-12 and clarifies and amends existing guidance to improve consistent application. ASU 2019-12 was effective for annual reporting periods beginning after December 15, 2020. There was no effect on our financial statements from adopting this new standard. ASU 2021-10 In November 2021, the FASB issued ASU 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” (“ASU 2021-10”), which requires business entities to provide certain disclosures about government transactions that are accounted for by applying a grant or contribution accounting model by analogy to other accounting guidance. ASU 2021-10 is effective for annual reporting periods beginning after December 15, 2021. We are currently evaluating the effect ASU 2021-10 will have on our disclosures, but do not expect its adoption to have a material impact.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition Revenue Disaggregation We are primarily engaged in the ownership, operation, management and development of integrated entertainment facilities both domestically and internationally. Our current wholly-owned operations are primarily focused within Connecticut and Pennsylvania. We also currently operate and manage other gaming facilities elsewhere within the United States and Canada. We generate revenues by providing the following types of goods and services: gaming, food and beverage, hotel and retail, entertainment and other, which includes management and development fees earned. Revenue Disaggregation by Geographic Location For the Fiscal Year Ended September 30, 2022 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 631,456 $ 229,163 $ 213,165 $ 49,080 Food and beverage 90,722 16,005 23,782 4,215 Hotel 94,240 6,258 15,339 (9) Retail, entertainment and other 123,864 6,414 26,977 59,840 Net revenues $ 940,282 $ 257,840 $ 279,263 $ 113,126 For the Fiscal Year Ended September 30, 2021 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 604,482 $ 202,932 $ 87,406 $ 15,558 Food and beverage 59,611 8,718 2,837 2,465 Hotel 77,282 4,946 2,091 (12) Retail, entertainment and other 75,001 4,883 6,868 74,025 Net revenues $ 816,376 $ 221,479 $ 99,202 $ 92,036 For the Fiscal Year Ended September 30, 2020 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 518,599 $ 159,661 $ 121,387 $ — Food and beverage 64,012 12,208 27,544 (86) Hotel 58,219 4,578 6,319 (3) Retail, entertainment and other 74,844 4,713 24,775 38,019 Net revenues $ 715,674 $ 181,160 $ 180,025 $ 37,930 Contract and Contract-related Assets Accounts Receivable (in thousands) September 30, 2022 September 30, 2021 Gaming $ 40,385 $ 37,921 Food and beverage 18 13 Hotel 5,601 3,106 Retail, entertainment and other 24,009 19,099 Accounts receivable 70,013 60,139 Allowance for doubtful accounts (24,018) (19,367) Accounts receivable, net $ 45,995 $ 40,772 As of September 30, 2022 and 2021, contract assets related to the Niagara Resorts Casino Operating and Services Agreement with the Ontario Lottery and Gaming Corporation totaled $87.5 million and $119.9 million, respectively. Contract and Contract-related Liabilities A difference may exist between the timing of cash receipts from customers and the recognition of revenues, resulting in a contract or contract-related liability. In general, we have three types of such liabilities: (1) outstanding gaming chips and slot tickets liability, which represents amounts owed in exchange for outstanding gaming chips and slot tickets held by customers, (2) loyalty points deferred revenue liability and (3) customer advances and other liability, which primarily represents funds deposited in advance by customers for gaming and advance payments by customers for goods and services such as advance ticket sales, deposits on rooms and convention space and gift card purchases. These liabilities are generally expected to be recognized as revenues within one year and are recorded within other current liabilities. (in thousands) September 30, 2022 September 30, 2021 Outstanding gaming chips and slot tickets liability $ 9,743 $ 9,632 Loyalty points deferred revenue liability 40,873 42,663 Customer advances and other liability 30,528 30,166 Total $ 81,144 $ 82,461 As of September 30, 2022 and 2021, customer contract liabilities related to Mohegan Pennsylvania's revenue sharing agreement with Unibet Interactive Inc. totaled $14.4 million and $15.8 million, respectively, and were primarily recorded within other long-term liabilities.

Property and Equipment

Property and Equipment	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment Property and equipment (in thousands) September 30, 2022 September 30, 2021 Land $ 44,848 $ 44,848 Land improvements 103,134 102,820 Buildings and improvements 1,869,455 1,860,005 Furniture and equipment 764,356 752,087 Construction in process (1) 424,867 255,909 Property and equipment 3,206,660 3,015,669 Accumulated depreciation (1,562,870) (1,484,050) Property and equipment, net $ 1,643,790 $ 1,531,619 _________ (1) As of September 30, 2022 and 2021, Inspire Korea related construction in process totaled $385.7 million and $233.5 million, respectively. As of September 30, 2022 and 2021, finance lease assets totaled $97.8 million and $105.2 million, respectively. Depreciation expense totaled $101.1 million, $103.8 million and $107.6 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. Capitalized interest related to Inspire Korea totaled $22.3 million and $7.6 million for the fiscal years ended September 30, 2022 and 2020, respectively. We did not record any capitalized interest during the fiscal year ended September 30, 2021. Design and construction work related to Inspire Korea was temporarily paused in September 2020 while we were in the process of securing the necessary financing for the project, which was completed in November 2021 (refer to Note 6). During this temporary pause in construction, we obtained approval to modify our development plan and adjust the timing of a future sub-phase of the initial phase of the project and, in December 2021, we elected to terminate a licensing arrangement for a previously-planned sub-phase and discontinue related design work. As a result, during fiscal 2022, we recognized a tangible asset impairment of $23.6 million on the related construction in progress. As of September 30, 2022, we assessed our property and equipment for any further impairment and determined that no impairment existed.

Intangible Assets

Intangible Assets	12 Months Ended
	Sep. 30, 2022
Other Intangible Assets Net [Abstract]
Intangible Assets	Intangible Assets Intangible assets (in thousands) September 30, 2022 September 30, 2021 Mohegan Sun trademark (1) $ 119,692 $ 119,692 Mohegan Pennsylvania gaming licenses (1) 171,904 171,904 Niagara Resorts Casino Operating and Services Agreement rights (2) 16,291 17,612 Other 10,748 25,717 Intangible assets 318,635 334,925 Accumulated amortization (7,109) (7,670) Intangible assets, net $ 311,526 $ 327,255 _________ (1) Indefinite lives. (2) 21-year useful life. Amortization expense totaled $1.4 million, $1.5 million and $1.4 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. In connection with the termination of the licensing arrangement related to Inspire Korea (refer to Note 4), during fiscal 2022, we recognized an intangible asset impairment of $12.9 million. As of September 30, 2022, we assessed our intangible assets for any further impairment and determined that no impairment existed.

Long-Term Debt

Long-Term Debt	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Long-term debt September 30, 2022 September 30, 2021 (in thousands) Final Maturity Face Value Book Value Book Value Senior Secured Credit Facility 2024 $ — $ — $ 27,000 Line of Credit 2024 18,000 18,000 20,227 2021 8% Senior Secured Notes 2026 1,175,000 1,161,164 1,157,731 2016 7 7/8% Senior Unsecured Notes 2024 500,000 495,531 493,599 Niagara Credit Facility Revolving 2024 — — 27,534 Swingline 2024 — — 4,333 Term Loan 2024 60,945 60,453 68,965 Niagara Convertible Debenture 2040 29,108 29,108 31,468 Korea Credit Facility 2025 362,455 315,475 — Korea Term Loan 2027 311,998 211,425 — Expo Credit Facility (1) 2022 — — 25,697 Guaranteed Credit Facility 2023 25,156 24,875 27,208 Redemption Note Payable 2024 38,880 35,261 53,130 Other Varies 661 661 1,862 Long-term debt 2,522,203 2,351,953 1,938,754 Current portion of long-term debt (47,402) (47,402) (80,276) Long-term debt, net of current portion $ 2,474,801 $ 2,304,551 $ 1,858,478 Fair value $ 2,178,852 Unamortized discounts and debt issuance costs $ 170,250 $ 34,022 _________ (1) Repaid at maturity on April 1, 2022. Maturities of long-term debt, excluding unamortized debt issuance costs and discounts, are as follows: (in thousands) Fiscal years: 2023 $ 47,402 2024 95,807 2025 500,025 2026 1,537,480 2027 312,022 Thereafter 29,467 Total $ 2,522,203 Senior Secured Credit Facility In January 2021, we entered into a credit agreement (the “Credit Agreement”) providing for a $262.875 million senior secured revolving credit facility (the “Senior Secured Credit Facility”). On May 31, 2022, we entered into an amendment to the Senior Secured Credit Facility. Among other things, the amendment extended the maturity date of the Senior Secured Credit Facility from April 14, 2023 to April 12, 2024 and replaced the interest rate based on the London Interbank Offered Rate with an interest rate based on a secured overnight financing rate (“SOFR”). Borrowings under the Senior Secured Credit Facility accrue interest as follows: (i) for base rate loans, a base rate equal to the highest of (x) the prime rate, (y) the federal funds rate, plus 50 basis points, and (z) the daily SOFR rate, plus a 0.10% credit spread adjustment (subject to a 0.75% floor), plus 100 basis points and a leverage-based margin of 100 to 275 basis points and (ii) for SOFR loans, the applicable SOFR rate, plus a 0.10% credit spread adjustment (subject to a 0.75% floor), plus a leverage-based margin of 200 to 375 basis points. We are also required to pay a leverage-based undrawn commitment fee under the Senior Secured Credit Facility of between 37.5 and 50 basis points. The leverage-based undrawn commitment fee was 50 basis points as of September 30, 2022. As of September 30, 2022, letters of credit issued under the Senior Secured Credit Facility totaled $1.9 million. We had $243.0 million of borrowing capacity under the Senior Secured Credit Facility as of September 30, 2022, after factoring in outstanding letters of credit. The Senior Secured Credit Facility is fully and unconditionally guaranteed, jointly and severally, by certain of our restricted subsidiaries. The Senior Secured Credit Facility is secured on a first priority senior secured basis by collateral constituting substantially all of our and our restricted subsidiaries' assets. In the future, certain other subsidiaries may be required to become guarantors under the terms of the Credit Agreement. The Credit Agreement contains certain customary covenants applicable to us and our restricted subsidiaries, including covenants governing: incurrence of indebtedness, incurrence of liens, payment of dividends and other distributions, investments, asset sales, affiliate transactions and mergers or consolidations. Additionally, the Credit Agreement includes financial maintenance covenants pertaining to total leverage, secured leverage and fixed charge coverage, as well as a minimum liquidity covenant under certain conditions. The Credit Agreement also contains customary events of default relating to, among other things, failure to make payments, breach of covenants and breach of representations. Line of Credit In January 2021, in connection with the Senior Secured Credit Facility, we entered into a $25.0 million revolving credit facility (the “Line of Credit”). On May 31, 2022, in connection with the amendment to the Senior Secured Credit Facility, we entered into an amendment to the Line of Credit. This amendment extended the maturity date of the Line of Credit from April 14, 2023 to April 12, 2024 and replaced the interest rate based on the London Interbank Offered Rate with a rate based on SOFR. Under the terms of the Senior Secured Credit Facility, the Line of Credit may be converted into loans under the Senior Secured Credit Facility. Borrowings under the Line of Credit accrue interest at a base rate plus a spread. As of September 30, 2022, outstanding borrowings under the Line of Credit accrue interest at 6.27%. The Line of Credit contains negative covenants and financial maintenance covenants that are substantially the same as those contained in the Senior Secured Credit Facility. 2021 8% Senior Secured Notes In January 2021, we issued $1.175 billion second priority senior secured notes with interest at 8% per annum (the “2021 Senior Secured Notes”). The 2021 Senior Secured Notes mature on the earlier of February 1, 2026 and the Springing Maturity Date (as defined in the 2021 Senior Secured Notes indenture). Interest on the 2021 Senior Secured Notes is payable semi-annually in arrears on February 1 and August 1. Prior to February 1, 2023, we may redeem the 2021 Senior Secured Notes, in whole or in part, at a price equal to 100% of the principal amount of the 2021 Senior Secured Notes redeemed and a Make-whole Premium (as defined in the 2021 Senior Secured Notes indenture), plus accrued interest. In addition, we may, during the twelve-month period commencing on the issue date of the 2021 Senior Secured Notes and during the twelve-month period subsequent to such initial twelve-month period and prior to February 1, 2023, redeem in each such twelve-month period up to 10% of the initial aggregate principal amount of the 2021 Senior Secured Notes at a price equal to 103% of the principal amount of the 2021 Senior Secured Notes redeemed, plus accrued interest, provided that if we do not redeem 10% of the initial aggregate principal amount of the 2021 Senior Secured Notes during the initial twelve-month period commencing on the issue date of the 2021 Senior Secured Notes, we may, in the subsequent twelve-month period prior to February 1, 2023, redeem the 2021 Senior Secured Notes in an amount that does not exceed 10% of the initial aggregate principal amount of the 2021 Senior Secured Notes plus the difference between: (i) 10% of the initial aggregate principal amount of the 2021 Senior Secured Notes and (ii) the aggregate principal amount of any 2021 Senior Secured Notes redeemed during such initial twelve-month period. On or after February 1, 2023, we may redeem some or all of the 2021 Senior Secured Notes at prices set forth in the 2021 Senior Secured Notes indenture, plus accrued interest. The 2021 Senior Secured Notes are fully and unconditionally guaranteed, jointly and severally, by each of our restricted subsidiaries and will be guaranteed by any restricted subsidiary that becomes a guarantor under the terms of the 2021 Senior Secured Notes indenture. The 2021 Senior Secured Notes are secured on a second priority senior secured basis by collateral constituting substantially all of our and our restricted subsidiaries’ assets. The 2021 Senior Secured Notes indenture contains certain customary covenants, including our and our restricted subsidiaries’ ability to incur additional debt, pay dividends or distributions, make certain investments, create liens on assets, enter into transactions with affiliates, merge or consolidate with another company or sell assets. The 2021 Senior Secured Notes indenture includes customary events of default, including, but not limited to, failure to make required payments and failure to comply with certain covenants. 2016 7 7/8% Senior Unsecured Notes In 2016, we issued $500.0 million senior unsecured notes with interest at 7.875% per annum (the “2016 Senior Unsecured Notes”). The 2016 Senior Unsecured Notes mature on October 15, 2024. Interest on the 2016 Senior Unsecured Notes is payable semi-annually in arrears on April 15 and October 15. The 2016 Senior Unsecured Notes are redeemable at our option, in whole or in part, at specified redemption prices, plus accrued interest. If we experience specific kinds of change-of-control triggering events, we are required to make an offer to repurchase the 2016 Senior Unsecured Notes at a price equal to 101% of the principal amount, plus accrued interest. Additionally, if we undertake specific kinds of asset sales and do not use the related sale proceeds for specified purposes, we may be required to offer to repurchase the 2016 Senior Unsecured Notes at a price equal to 100% of the principal amount, plus accrued interest. In certain circumstances, if any gaming regulatory authority requires a holder or beneficial owner of the 2016 Senior Unsecured Notes to be licensed, qualified or found suitable under applicable gaming laws, and such holder or beneficial owner does not obtain such license, qualification or finding of suitability within a specified time, we can require such holder or beneficial owner to dispose our 2016 Senior Unsecured Notes or call for redemption of the 2016 Senior Unsecured Notes held by such holder or beneficial owner at a price equal to the lesser of 100% of the principal amount or the price paid by such holder or beneficial owner, plus accrued interest. The 2016 Senior Unsecured Notes are unsecured, unsubordinated obligations and are guaranteed by certain of our restricted subsidiaries. The 2016 Senior Unsecured Notes indenture contains certain covenants that, subject to certain significant exceptions, limit, among other things, us and certain of our restricted subsidiaries’ ability to incur additional debt, pay dividends or distributions, make certain investments, create liens on assets, enter into transactions with affiliates, merge or consolidate with another company or transfer and sell assets. The 2016 Senior Unsecured Notes indenture also includes events of default, including, but not limited to, failure to make required payments, failure to comply with certain agreements or covenants, failure to pay certain other indebtedness the occurrence of which is caused by a failure to pay principal, premium or interest or results in the acceleration of such indebtedness, certain events of bankruptcy and insolvency and certain judgment defaults. Refer to Note 13 for further details regarding an exchange agreement we entered into in connection with the 2016 Senior Unsecured Notes. Niagara Credit Facilities In July 2021, MGE Niagara entered into an amended and restated credit agreement (the “Niagara Credit Agreement”) providing for certain credit facilities (the “Niagara Credit Facilities”). The Niagara Credit Agreement, as amended from time to time, provides for a revolving credit facility in the amount of up to 180.0 million Canadian dollars (the “Niagara Revolving Facility”), a swingline facility in the amount of up to 25.0 million Canadian dollars (the “Niagara Swingline Facility”) and a term loan facility in the amount of 90.0 million Canadian dollars (the “Niagara Term Loan Facility”). Availability under the Niagara Revolving Facility and the Niagara Swingline Facility is determined based on Province of Ontario-approved gaming capacity levels. The Niagara Credit Facilities mature on June 10, 2024. The Niagara Term Loan Facility is repayable, in quarterly installments, at a rate of 5.0 million Canadian dollars per annum, commencing September 30, 2019. Borrowings under the Niagara Credit Facilities accrue interest at a base rate plus a spread. We are also required to pay a leverage-based undrawn fee under the Niagara Revolving Facility of between 75 and 125 basis points. As of September 30, 2022, outstanding borrowings under the Niagara Term Loan Facility accrue interest at 8.69%. As of September 30, 2022, the undrawn fee under the Niagara Revolving Facility was 125 basis points. As of September 30, 2022, letters of credit issued under the Niagara Revolving Facility totaled $25.5 million. We had $120.1 million of borrowing capacity under the Niagara Revolving Facility and Niagara Swingline Facility as of September 30, 2022, after factoring in outstanding letters of credit. MGE Niagara is an unrestricted subsidiary under our existing credit facilities and indentures and the Niagara Credit Facilities are non-recourse to us and our restricted subsidiaries. The Niagara Credit Facilities are secured by, among other things, substantially all of the properties and assets of MGE Niagara, subject to certain customary exceptions, as well as by a pledge of: (i) all of the issued and outstanding shares of MGE Niagara and (ii) a convertible debenture held by a third-party investor. The Niagara Credit Agreement contains customary covenants applicable to MGE Niagara, including covenants governing: incurrence of indebtedness, incurrence of liens, payment of dividends and other distributions, asset sales, acquisitions and investments, affiliate transactions and fundamental changes. The Niagara Credit Agreement also includes financial maintenance covenants pertaining to total leverage and fixed charge coverage. In addition, the Niagara Credit Agreement contains customary events of default relating to, among other things, failure to make payments, breach of covenants and breach of representations. Niagara Convertible Debenture In 2019, MGE Niagara issued a convertible debenture (the “Niagara Convertible Debenture”) to a third-party investor (the "Convertible Debenture Holder") in an aggregate principal amount of 40.0 million Canadian dollars. The Niagara Convertible Debenture is convertible, at the option of the Convertible Debenture Holder, between the fourth and sixth anniversaries of the acquisition of the Niagara Resorts (the “Closing Date”), into Class B Special shares representing 40% of the capital of MGE Niagara. The Class B Special shares will be similar in nature to the existing Common shares. The Niagara Convertible Debenture accrues interest at an annual rate of 3.50% prior to the sixth anniversary of the Closing Date and 8.00% thereafter, compounded annually. The first interest payment was payable on June 11, 2022, with annual payments due thereafter. Repayment of the outstanding principal, plus accrued interest, is due thirty days following the expiration or the termination of the Casino Operating and Services Agreement. If the Niagara Convertible Debenture is not converted as of the sixth anniversary of the Closing Date, either MGE Niagara or the Convertible Debenture Holder may elect early repayment of half of the principal outstanding as of such date. Korea Credit Facility In September 2021, Inspire Integrated Resort entered into a loan agreement providing for a loan commitment of up to 1.04 trillion Korean won (“KRW”) in two tranches (the “Korea Credit Facility”), comprised of a 740.0 billion KRW credit facility (the “Tranche A Facility”) and a 300.0 billion KRW credit facility (the “Tranche B Facility”). The Korea Credit Facility is being used to pay for the construction, operation, financial and other project costs in connection with Inspire Korea (refer to Note 1). The Korea Credit Facility matures 48 months after the date of the first draw, which was November 29, 2021. Mandatory prepayments are required under the Korea Credit Facility in connection with certain specified asset dispositions or receipt of insurance proceeds, without a prepayment fee. The Korea Credit Facility may not be voluntarily prepaid in whole or in part until one year after the date of the first draw. After such date, any voluntary prepayment requires a Prepayment Fee (as defined in the Korea Credit Facility agreement). Borrowings outstanding under the Tranche A Facility accrue interest at a fixed rate of 5.4% per annum or a floating rate equal to the sum of a base rate and an applicable margin (as defined in the Korea Credit Facility agreement). Loans outstanding under the Tranche B Facility accrue interest at a fixed rate of 7.0% per annum or a floating rate equal to the sum of a base rate and an applicable margin (as defined in the Korea Credit Facility agreement). The Korea Credit Facility includes an interest reserve whereby a portion of loan proceeds is reserved for payment of interest. Interest on Tranche A Facility loans is fully reserved and interest on Tranche B Facility loans is reserved for 36 months. If any portion of the Korea Credit Facility is undrawn, Inspire Integrated Resort is required to pay a 0.3% commitment fee on the undrawn amount. As of September 30, 2022, outstanding borrowings under the Korea Credit Facility accrue interest at between 5.40% and 8.10%. Inspire Integrated Resort is an unrestricted subsidiary under our existing credit facilities and indentures and the Korea Credit Facility is non-recourse to us and our restricted subsidiaries. The Korea Credit Facility is secured by liens on substantially all assets of, and equity interests in, Inspire Integrated Resort (subject to certain exceptions and limitations). The Korea Credit Facility contains certain customary covenants applicable to Inspire Integrated Resort, including covenants governing: incurrence of indebtedness, incurrence of liens, investments, mergers or consolidations, asset sales, acquisitions of assets, the payment of dividends and other distributions and affiliate transactions. In addition, the Korea Credit Facility includes other covenants, representations and warranties and events of default that are customary for financing transactions of this type. In connection with the Korea Credit Facility, we entered into a credit enhancement support agreement to provide up to $100.0 million credit enhancement support for Inspire Integrated Resort's payment of principal, interest and other sums due under the Korea Credit Facility. We incurred $59.1 million in costs in connection with this transaction during fiscal 2022. These debt issuance costs were reflected as a debt discount and are being amortized over the term of the Korea Credit Facility using the effective interest method. Korea Term Loan On November 4, 2021, MGE Korea Limited (“Korea Limited”), a wholly-owned subsidiary and parent company of Inspire Integrated Resort, entered into a $275.0 million secured term loan facility agreement (the “Korea Term Loan”). Korea Limited received funding from the Korea Term Loan on November 24, 2021 (the “Utilisation Date”). The Korea Term Loan was primarily used to make a capital contribution to Inspire Integrated Resort to partially fund construction-related costs for Inspire Korea. The Korea Term Loan matures 66 months after the Utilisation Date. If the Korea Term Loan is voluntarily prepaid, if certain mandatory prepayment events are triggered or if it is repaid following a notice of acceleration, we are required to pay a Prepayment Fee (as defined in the Korea Term Loan agreement). The Korea Term Loan accrues payment-in-kind interest at a rate of 17.0% per annum, to be compounded and capitalized at the end of each quarter, or paid in cash if so elected by Korea Limited. Korea Limited is an unrestricted subsidiary under our existing credit facilities and indentures and the Korea Term Loan is non-recourse to us and our restricted subsidiaries. The Korea Term Loan is secured by a fixed charge over 100% of Korea Limited’s share capital and a debenture over the assets of Korea Limited (subject to certain exceptions and limitations). The Korea Term Loan contains certain customary covenants, including covenants governing: incurrence of indebtedness, incurrence of liens, payment of dividends and other distributions, disposals, acquisitions and investments, arm’s length transactions, mergers and the development and management of Inspire Korea. In addition, the Korea Term Loan includes financial maintenance covenants pertaining to net leverage and debt service coverage of Korea Limited and Inspire Integrated Resort, and contains a requirement that Inspire Integrated Resort maintain a minimum cash balance in the amounts set forth in the Korea Term Loan agreement. The Korea Term Loan also contains customary events of default relating to, among other things, failure to make payments, breach of covenants and breach of representations. We incurred $9.3 million in costs in connection with the Korea Term Loan during fiscal 2022. These debt issuance costs were reflected as a debt discount and are being amortized over the term of the Korea Term Loan using the effective interest method. In addition, the allocation of proceeds to the issuance of warrants and associated put option (see below) resulted in an original issue discount on the Korea Term Loan of $90.3 million, which will also be amortized over the term of the Korea Term Loan using the effective interest method. Korea Warrant Agreement In connection with the Korea Term Loan, on November 4, 2021, MGE Korea Holding III Limited (“Korea Holding III”), the parent company of Korea Limited, entered into a warrant agreement (the “Warrant Agreement”) to issue detachable warrants (the “Warrants”). The Warrants can be converted into up to a total of 4,400 shares of capital in Korea Holding III at an initial exercise price of $0.01 per share. At the time of issuance, the Warrants represented 22.0% of the fully-diluted share capital of Korea Holding III. The Warrants are generally exercisable at any time after the third anniversary of the Utilisation Date (November 2024) until the tenth anniversary of the Utilisation Date (November 2031), but may be exercised earlier upon certain triggering events defined in the Warrant Agreement. Upon the earlier of: (i) the tenth anniversary of the Utilisation Date (November 2031) and (ii) the consummation of an Exit Event (as defined in the Warrant Agreement), all unexercised Warrants will expire. Warrant holders do not have any rights held by holders of shares in the capital of Korea Holding III to vote or to receive dividends and other distributions (other than as set forth in the Warrant Agreement). Warrant holders and shareholders of Korea Holding III have certain preemptive rights in relation to any proposed issuance of equity securities by Korea Holding III or certain affiliates (as defined in the Warrant Agreement), subject to customary exceptions. Holders of unexercised Warrants have the right to require the parent of Korea Holding III (the “Parent”) to purchase all of the unexercised Warrants that they hold at certain relevant times (the “Put Option”). In turn, the Parent has the right to require the holders of unexercised Warrants to sell all of the unexercised Warrants they hold at certain relevant times (the “Call Option”). Both the Put Option and the Call Option are exercisable at any time in the period from (and including) the date six years and six months after the Utilisation Date (May 2028) until the tenth anniversary of the Utilisation Date (November 2031). The aggregate cash purchase price for both the Put Option and the Call Option equals the higher of: (i) the fair market value of the relevant unexercised Warrants and (ii) $110.0 million, multiplied by a fraction, the numerator of which is the number of the relevant unexercised Warrants and the denominator of which is the total number of Warrants. The Warrants and the Put Option are classified as long-term liabilities and are re-measured at their estimated fair values at each reporting date. The estimated fair value of the Warrants and the Put Option was determined by utilizing the income approach (discounted cash flow method) and a binomial lattice model. This valuation approach utilized Level 3 inputs. The primary unobservable inputs utilized were the discount rate, which was 12.0%, and the expected volatility of the underlying stock price, which was 55.0%. In addition, projected cash flows are utilized in this valuation approach. Debt issuance costs incurred during fiscal 2022 and allocated to the Warrants and the Put Option totaling $4.2 million were expensed on the Utilisation Date and recorded within Corporate costs and expenses. Warrants and Put Option (in thousands) Balance, September 30, 2021 $ — Additions 90,320 Unrealized gain (43,020) Balance, September 30, 2022 $ 47,300 Guaranteed Credit Facility In 2018, we entered into loan agreements providing for $35.0 million in term loans under the Indian Loan Guaranty, Insurance and Interest Subsidy Program (the “Guaranteed Credit Facility”). The Guaranteed Credit Facility matures on October 1, 2023 and is repayable, in quarterly installments, at a rate of $2.6 million per annum, commencing January 1, 2019. As of September 30, 2022, outstanding borrowings under the Guaranteed Credit Facility accrue interest at 5.31%. The Guaranteed Credit Facility subjects us to certain covenant requirements. Redemption Note Payable In 2017, Salishan-Mohegan redeemed the membership interest in Salishan-Mohegan that was previously held by Salishan Company, LLC for a redemption price of $114.8 million, payable through a promissory note (the “Redemption Note Payable”). The Redemption Note Payable is payable in monthly installments of $1.9 million over a five-year period, commencing in May 2019. We recognize interest expense relating to the amortization of discount to the Redemption Price, utilizing the effective yield method.

Leases

Leases	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	Leases Lessee We lease real estate and equipment under various operating and finance lease agreements. The leases have remaining terms ranging from approximately one month to 49 years and do not contain any material residual value guarantees or restrictive covenants. Rental payments under these lease agreements are fixed and/or variable based on periodic adjustments for inflation, performance, usage or appraised land values. Variable components of lease payments are not included in the calculation of right-of-use assets and liabilities. Our lease arrangements contain both lease and non-lease components. For instances in which we are a lessee, we account for both lease and non-lease components as a single lease component for substantially all classes of underlying assets (primarily real estate and equipment). Leases with an expected or initial term of 12 months or less are not recorded on our Balance Sheets. Information related to weighted average lease terms and discount rates is as follows: September 30, 2022 Weighted average remaining lease terms (years): Operating leases 21 Finance leases 18 Weighted average discount rates: Operating leases 7.84 % Finance leases 6.88 % The components of lease expense are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Operating lease expense $ 44,065 $ 45,458 $ 38,414 Short-term lease expense 43,642 33,438 27,121 Variable lease expense 18,133 17,427 12,922 Finance lease expense: Amortization of right-of-use assets 6,494 4,459 2,401 Interest on lease liabilities 8,740 5,059 1,547 Sublease income (1) (38,298) (23,147) (20,791) Total $ 82,776 $ 82,694 $ 61,614 _________ (1) Represents income earned from the rental of hotel, convention or retail space at the Niagara Resorts and the Earth Hotel Tower at Mohegan Sun, both of which are leased properties. Supplemental cash flow information related to lease liabilities is as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Payments on operating lease obligations $ 38,842 $ 20,747 $ 22,844 Payments for interest on finance lease obligations 4,714 345 889 Payments on finance lease obligations 5,553 1,145 1,298 Total $ 49,109 $ 22,237 $ 25,031 Maturities of lease obligations are as follows: (in thousands) Operating Leases Finance Leases Fiscal years: 2023 $ 36,788 $ 12,790 2024 38,133 12,354 2025 37,555 11,849 2026 37,827 11,658 2027 38,087 11,240 Thereafter 707,304 148,971 Total future lease payments 895,694 208,862 Amounts representing interest (533,082) (96,744) Residual values — 350 Present value of future lease payments 362,612 112,468 Current portion of lease obligations (5,473) (4,491) Lease obligations, net of current portion $ 357,139 $ 107,977 Lessor We lease space at our facilities to third parties. Remaining lease terms for these non-cancelable operating leases range from approximately one month to 10 years. Rental income under these lease agreements is fixed and/or variable based on percentage of tenant sales or periodic adjustments for inflation. Rental income is recorded within hotel and retail, entertainment and other revenues. For instances in which we are the lessor, and the class of underlying asset represents retail space, we account for both the lease and non-lease components, such as common area maintenance and tenant services, as a single lease component. In all other instances, non-lease components are accounted for separately in accordance with applicable guidance, most commonly ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”. Rental income consists of the following: For the Fiscal Years Ended September 30, 2022 September 30, 2021 September 30, 2020 (in thousands) Hotel Retail, Hotel Retail, Hotel Retail, Fixed rent $ 66,375 $ 6,799 $ 53,904 $ 5,226 $ 42,473 $ 7,160 Variable rent — 10,885 — 5,314 — 4,176 Total $ 66,375 $ 17,684 $ 53,904 $ 10,540 $ 42,473 $ 11,336 Fixed rental income that we expect to earn under non-cancelable operating leases, exclusive of amounts under contingent rent escalation clauses, is as follows: (in thousands) Fixed Rental Income Fiscal years: 2023 $ 6,781 2024 5,978 2025 4,990 2026 4,612 2027 3,220 Thereafter 8,984 Total $ 34,565 The portions of Mohegan Sun, including the Sky Hotel Tower and the Earth Expo & Convention Center, and Mohegan Pennsylvania that are leased to third parties under operating leases are recorded within property and equipment, net as follows: (in thousands) September 30, 2022 September 30, 2021 Property and equipment, at cost $ 487,180 $ 491,673 Accumulated depreciation (233,344) (218,873) Property and equipment, net $ 253,836 $ 272,800
Leases	Leases Lessee We lease real estate and equipment under various operating and finance lease agreements. The leases have remaining terms ranging from approximately one month to 49 years and do not contain any material residual value guarantees or restrictive covenants. Rental payments under these lease agreements are fixed and/or variable based on periodic adjustments for inflation, performance, usage or appraised land values. Variable components of lease payments are not included in the calculation of right-of-use assets and liabilities. Our lease arrangements contain both lease and non-lease components. For instances in which we are a lessee, we account for both lease and non-lease components as a single lease component for substantially all classes of underlying assets (primarily real estate and equipment). Leases with an expected or initial term of 12 months or less are not recorded on our Balance Sheets. Information related to weighted average lease terms and discount rates is as follows: September 30, 2022 Weighted average remaining lease terms (years): Operating leases 21 Finance leases 18 Weighted average discount rates: Operating leases 7.84 % Finance leases 6.88 % The components of lease expense are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Operating lease expense $ 44,065 $ 45,458 $ 38,414 Short-term lease expense 43,642 33,438 27,121 Variable lease expense 18,133 17,427 12,922 Finance lease expense: Amortization of right-of-use assets 6,494 4,459 2,401 Interest on lease liabilities 8,740 5,059 1,547 Sublease income (1) (38,298) (23,147) (20,791) Total $ 82,776 $ 82,694 $ 61,614 _________ (1) Represents income earned from the rental of hotel, convention or retail space at the Niagara Resorts and the Earth Hotel Tower at Mohegan Sun, both of which are leased properties. Supplemental cash flow information related to lease liabilities is as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Payments on operating lease obligations $ 38,842 $ 20,747 $ 22,844 Payments for interest on finance lease obligations 4,714 345 889 Payments on finance lease obligations 5,553 1,145 1,298 Total $ 49,109 $ 22,237 $ 25,031 Maturities of lease obligations are as follows: (in thousands) Operating Leases Finance Leases Fiscal years: 2023 $ 36,788 $ 12,790 2024 38,133 12,354 2025 37,555 11,849 2026 37,827 11,658 2027 38,087 11,240 Thereafter 707,304 148,971 Total future lease payments 895,694 208,862 Amounts representing interest (533,082) (96,744) Residual values — 350 Present value of future lease payments 362,612 112,468 Current portion of lease obligations (5,473) (4,491) Lease obligations, net of current portion $ 357,139 $ 107,977 Lessor We lease space at our facilities to third parties. Remaining lease terms for these non-cancelable operating leases range from approximately one month to 10 years. Rental income under these lease agreements is fixed and/or variable based on percentage of tenant sales or periodic adjustments for inflation. Rental income is recorded within hotel and retail, entertainment and other revenues. For instances in which we are the lessor, and the class of underlying asset represents retail space, we account for both the lease and non-lease components, such as common area maintenance and tenant services, as a single lease component. In all other instances, non-lease components are accounted for separately in accordance with applicable guidance, most commonly ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”. Rental income consists of the following: For the Fiscal Years Ended September 30, 2022 September 30, 2021 September 30, 2020 (in thousands) Hotel Retail, Hotel Retail, Hotel Retail, Fixed rent $ 66,375 $ 6,799 $ 53,904 $ 5,226 $ 42,473 $ 7,160 Variable rent — 10,885 — 5,314 — 4,176 Total $ 66,375 $ 17,684 $ 53,904 $ 10,540 $ 42,473 $ 11,336 Fixed rental income that we expect to earn under non-cancelable operating leases, exclusive of amounts under contingent rent escalation clauses, is as follows: (in thousands) Fixed Rental Income Fiscal years: 2023 $ 6,781 2024 5,978 2025 4,990 2026 4,612 2027 3,220 Thereafter 8,984 Total $ 34,565 The portions of Mohegan Sun, including the Sky Hotel Tower and the Earth Expo & Convention Center, and Mohegan Pennsylvania that are leased to third parties under operating leases are recorded within property and equipment, net as follows: (in thousands) September 30, 2022 September 30, 2021 Property and equipment, at cost $ 487,180 $ 491,673 Accumulated depreciation (233,344) (218,873) Property and equipment, net $ 253,836 $ 272,800
Leases	Leases Lessee We lease real estate and equipment under various operating and finance lease agreements. The leases have remaining terms ranging from approximately one month to 49 years and do not contain any material residual value guarantees or restrictive covenants. Rental payments under these lease agreements are fixed and/or variable based on periodic adjustments for inflation, performance, usage or appraised land values. Variable components of lease payments are not included in the calculation of right-of-use assets and liabilities. Our lease arrangements contain both lease and non-lease components. For instances in which we are a lessee, we account for both lease and non-lease components as a single lease component for substantially all classes of underlying assets (primarily real estate and equipment). Leases with an expected or initial term of 12 months or less are not recorded on our Balance Sheets. Information related to weighted average lease terms and discount rates is as follows: September 30, 2022 Weighted average remaining lease terms (years): Operating leases 21 Finance leases 18 Weighted average discount rates: Operating leases 7.84 % Finance leases 6.88 % The components of lease expense are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Operating lease expense $ 44,065 $ 45,458 $ 38,414 Short-term lease expense 43,642 33,438 27,121 Variable lease expense 18,133 17,427 12,922 Finance lease expense: Amortization of right-of-use assets 6,494 4,459 2,401 Interest on lease liabilities 8,740 5,059 1,547 Sublease income (1) (38,298) (23,147) (20,791) Total $ 82,776 $ 82,694 $ 61,614 _________ (1) Represents income earned from the rental of hotel, convention or retail space at the Niagara Resorts and the Earth Hotel Tower at Mohegan Sun, both of which are leased properties. Supplemental cash flow information related to lease liabilities is as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Payments on operating lease obligations $ 38,842 $ 20,747 $ 22,844 Payments for interest on finance lease obligations 4,714 345 889 Payments on finance lease obligations 5,553 1,145 1,298 Total $ 49,109 $ 22,237 $ 25,031 Maturities of lease obligations are as follows: (in thousands) Operating Leases Finance Leases Fiscal years: 2023 $ 36,788 $ 12,790 2024 38,133 12,354 2025 37,555 11,849 2026 37,827 11,658 2027 38,087 11,240 Thereafter 707,304 148,971 Total future lease payments 895,694 208,862 Amounts representing interest (533,082) (96,744) Residual values — 350 Present value of future lease payments 362,612 112,468 Current portion of lease obligations (5,473) (4,491) Lease obligations, net of current portion $ 357,139 $ 107,977 Lessor We lease space at our facilities to third parties. Remaining lease terms for these non-cancelable operating leases range from approximately one month to 10 years. Rental income under these lease agreements is fixed and/or variable based on percentage of tenant sales or periodic adjustments for inflation. Rental income is recorded within hotel and retail, entertainment and other revenues. For instances in which we are the lessor, and the class of underlying asset represents retail space, we account for both the lease and non-lease components, such as common area maintenance and tenant services, as a single lease component. In all other instances, non-lease components are accounted for separately in accordance with applicable guidance, most commonly ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”. Rental income consists of the following: For the Fiscal Years Ended September 30, 2022 September 30, 2021 September 30, 2020 (in thousands) Hotel Retail, Hotel Retail, Hotel Retail, Fixed rent $ 66,375 $ 6,799 $ 53,904 $ 5,226 $ 42,473 $ 7,160 Variable rent — 10,885 — 5,314 — 4,176 Total $ 66,375 $ 17,684 $ 53,904 $ 10,540 $ 42,473 $ 11,336 Fixed rental income that we expect to earn under non-cancelable operating leases, exclusive of amounts under contingent rent escalation clauses, is as follows: (in thousands) Fixed Rental Income Fiscal years: 2023 $ 6,781 2024 5,978 2025 4,990 2026 4,612 2027 3,220 Thereafter 8,984 Total $ 34,565 The portions of Mohegan Sun, including the Sky Hotel Tower and the Earth Expo & Convention Center, and Mohegan Pennsylvania that are leased to third parties under operating leases are recorded within property and equipment, net as follows: (in thousands) September 30, 2022 September 30, 2021 Property and equipment, at cost $ 487,180 $ 491,673 Accumulated depreciation (233,344) (218,873) Property and equipment, net $ 253,836 $ 272,800

Related Party Transactions

Related Party Transactions	12 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Services The Mohegan Tribe provides us certain governmental and administrative services. We incurred expenses for such services totaling $37.5 million, $26.5 million and $22.9 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. We purchase most of our utilities, including electricity, gas, water and waste water services, from an instrumentality of the Mohegan Tribe. We incurred costs for such utilities totaling $22.0 million, $16.9 million and $15.5 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. Leases We lease the land on which Mohegan Sun is located from the Mohegan Tribe under a long-term lease agreement. The current term of 25 years, which commenced in October 2016, is renewable by us for an additional 25 years upon expiration. The lease agreement requires us to make a nominal annual rental payment.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Sep. 30, 2022
Compensation Related Costs [Abstract]
Employee Benefit Plans	Employee Benefit Plans We offer a retirement savings plan for our employees under Section 401(k) and Section 401(a) of the Internal Revenue Code (the “Mohegan Retirement and 401(k) Plan”). We currently make discretionary matching contributions of 50%, up to the first 6% of participants’ eligible compensation contributed to the 401(k) portion of the plan. We contributed $4.3 million, $2.1 million and $1.5 million, net of forfeitures, to the Mohegan Retirement and 401(k) Plan for the fiscal years ended September 30, 2022, 2021 and 2020, respectively. We, together with the Mohegan Tribe, offer a non-qualified deferred compensation plan for certain key employees (the “Mohegan Deferred Compensation Plan”). As of September 30, 2022 and 2021, balances under the Mohegan Deferred Compensation Plan totaled $9.1 million and $11.4 million, respectively. The related asset and liability are recorded within other current assets and accrued payroll, respectively. We, together with the Mohegan Tribe, offer a benefit plan for certain eligible employees (the “Mohegan Benefit Plan”). The Mohegan Benefit Plan is sponsored by the Mohegan Tribe for the benefit of participants who authorize the purchase of life insurance policies as a means of providing certain life insurance benefits to the participants and their spouses as joint insured. As of September 30, 2022 and 2021, balances under the Mohegan Benefit Plan totaled $8.1 million and $7.0 million, respectively, and are recorded within other assets, net.

Income Taxes

Income Taxes	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Similar to other sovereign governments, the Mohegan Tribe and its entities, including the Company, are not subject to United States federal income taxes. However, certain of our non-tribal entities are subject to income taxes in various domestic and foreign jurisdictions. The components of income (loss) before income tax are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Domestic $ 104,432 $ 57,138 $ (124,227) Foreign (20,426) (56,138) (44,483) Income (loss) before income tax $ 84,006 $ 1,000 $ (168,710) The components of income tax are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Current: Federal $ — $ — $ — State 292 (325) (355) Foreign — — — Total 292 (325) (355) Non-current: Federal — — — State — — — Foreign (9,102) 6,678 7,049 Total (9,102) 6,678 7,049 Income tax benefit (provision) $ (8,810) $ 6,353 $ 6,694 The components of deferred income tax benefit or provision result from various temporary differences and relate to items included within the Statements of Operations. The tax effect of these temporary differences are recorded within deferred income tax assets or liabilities as follows: September 30, 2022 September 30, 2021 Deferred income tax assets: Foreign net operating loss carryforward $ 18,058 $ 26,188 Lease obligations 91,447 92,243 Limitation on interest expense deduction 9,749 — Accumulated book depreciation in excess of tax depreciation 6,909 8,336 Other 1,493 29 Valuation allowance (19,919) — Total 107,737 126,796 Deferred income tax liabilities: Casino Operating and Services Agreement contract asset (23,137) (31,685) Right-of-use lease assets (80,728) (81,656) Other (46) (127) Total (103,911) (113,468) Deferred income tax asset, net (1) $ 3,826 $ 13,328 _________ (1) Recorded within other assets, net. MGE Niagara generated taxable income of $66.7 million for Canadian tax purposes for the fiscal year ended September 30, 2022. This taxable income will be offset by past net operating losses. As of September 30, 2022, we have gross income tax net operating loss carryforwards related to our foreign operations of $117.8 million. Such deferred tax assets expire as follows: (in thousands) Fiscal years: 2025 through 2029 $ 10,707 2030 through 2034 3,522 2035 through 2039 66,636 2040 through 2042 33,386 Indefinite 3,546 Total $ 117,797 We assess the available positive and negative evidence to estimate whether sufficient future taxable income will be generated to permit the use of existing deferred tax assets. A significant objective negative evidence assessed was the cumulative loss

Segment Reporting

Segment Reporting	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We, either directly or through subsidiaries, operate Mohegan Sun, along with our other Connecticut operations (the “Connecticut Facilities”), Mohegan Pennsylvania, along with our other Pennsylvania operations (the “Pennsylvania Facilities”) and the Niagara Resorts. Certain other properties that are managed or under development are identified as the management, development and other reportable segment. Our chief operating decision makers currently review and assess the performance and operating results and determine the proper allocation of resources to the Connecticut Facilities, the Pennsylvania Facilities, the Niagara Resorts and the properties managed or under development on a separate basis. Accordingly, we have four separate reportable segments: (i) Mohegan Sun, which includes the operations of the Connecticut Facilities, (ii) Mohegan Pennsylvania, which includes the operations of the Pennsylvania Facilities, (iii) the Niagara Resorts and (iv) management, development and other. Certain other gaming and entertainment operations (“all other”), which are not individually reportable segments, our corporate functions and inter-segment activities are each disclosed separately in the following segment disclosures to reconcile to consolidated results. Net Revenues For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 940,282 $ 816,376 $ 715,674 Mohegan Pennsylvania 257,840 221,479 181,160 Niagara Resorts 279,263 99,202 180,025 Management, development and other 62,221 70,009 37,189 All other 54,619 18,780 — Corporate 575 3,247 741 Inter-segment (4,289) (260) 173 Net revenues $ 1,590,511 $ 1,228,833 $ 1,114,962 Income (Loss) from Operations For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 213,654 $ 202,311 $ 128,449 Mohegan Pennsylvania 43,956 32,534 (115,073) Niagara Resorts 38,892 (22,638) (24,676) Management, development and other (15,948) 17,162 1,585 All other 7,158 (1,534) — Corporate (41,538) (43,358) (23,439) Inter-segment 60 (20) (63) Income (loss) from operations $ 246,234 $ 184,457 $ (33,217) Capital Expenditures Incurred For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 29,353 $ 23,250 $ 17,600 Mohegan Pennsylvania 11,316 6,063 3,559 Niagara Resorts 17,232 14,079 17,799 Management, development and other 249,569 7,773 137,171 All other 49 88,725 — Corporate 1,415 307 545 Capital expenditures incurred $ 308,934 $ 140,197 $ 176,674 Total Assets (in thousands) September 30, 2022 September 30, 2021 Mohegan Sun $ 1,226,689 $ 1,267,538 Mohegan Pennsylvania 405,455 408,187 Niagara Resorts 474,281 561,812 Management, development and other 869,117 407,831 All other 98,947 98,945 Corporate 1,010,984 996,040 Inter-segment (1,036,556) (1,010,476) Total assets $ 3,048,917 $ 2,729,877

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Slot Win Contribution The Mohegan Tribe and the State of Connecticut entered into a Memorandum of Understanding (“MOU”), which sets forth certain matters regarding implementation of the Mohegan Compact. The MOU stipulates that a portion of revenues from slot machines must be paid to the State of Connecticut (“Slot Win Contribution”). Slot Win Contribution payments are not required if the State of Connecticut legalizes any other gaming operation with slot machines, video facsimiles of games of chance or other commercial casino games within the state of Connecticut, except those consented to by the Mohegan Tribe and the Mashantucket Pequot Tribe. Annual Slot Win Contribution payments are the lesser of: (i) 30% of gross revenues from slot machines and (ii) the greater of 25% of gross revenues from slot machines or $80.0 million. Pennsylvania Slot Machine Tax The Pennsylvania Race Horse Development and Gaming Act stipulates that holders of Category One slot machine licenses, including Mohegan Pennsylvania, must pay a portion of revenues from slot machines and other assessments to the PGCB (collectively, the “Pennsylvania Slot Machine Tax”). The Pennsylvania Slot Machine Tax approximates 52% of gross revenues from slot machines, plus an annual $10.0 million slot machine operation fee. Niagara Resorts Casino Operating and Services Agreement Thresholds We operate the Niagara Resorts under the terms of a 21-year Casino Operating and Services Agreement with the Ontario Lottery and Gaming Corporation. Annual Threshold amounts under the Casino Operating and Services Agreement are contractually established and vary from year to year. If gaming revenues are less than the Threshold for any given year, we are obligated to make a payment to cover the related shortfall (refer to Note 2). Mohegan Casino Las Vegas Lease In July 2019, MGNV, LLC entered into a casino lease agreement with JC Hospitality, LLC, which developed the former Hard Rock Hotel and Casino in Las Vegas, Nevada, into an integrated resort under the Virgin Hotels brand. We operate Mohegan Casino Las Vegas, the gaming portion of the integrated resort. During the initial term of the 20-year lease agreement, we are required to make annual minimum rent payments of $9.0 million, subject to escalators which could result in annual minimum rent payments of up to $15.0 million, plus consumer price index inflators and additional common area maintenance fees. Annual minimum rent payments commenced upon the first anniversary of the Lease Commencement Date, as defined under the lease agreement, and continue until the end of the lease term, which concludes in 2041, subject to additional extensions at our option. Priority Distribution We and the Mohegan Tribe are parties to a perpetual agreement, which requires us to make payments to the Mohegan Tribe to the extent of our Net Cash Flow, as defined, subject to a minimum payment of $40.0 million per calendar year. Purchase and Other Contractual Obligations As of September 30, 2022, we were contractually committed to purchase goods and services totaling $10.2 million, of which $3.0 million is expected to be incurred in fiscal 2023. Litigation We are a defendant in various claims and legal actions resulting from our normal course of business, primarily relating to personal injuries to customers and damages to customers' personal assets. We estimate litigation claims expense and accrue for such liabilities based upon historical experience. In management's opinion, the aggregate liability, if any, arising from such legal actions will not have a material impact on our financial position, results of operations or cash flows.

Subsequent Events

Subsequent Events	12 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events 2016 7 7/8% Senior Unsecured Notes Exchange Notes Exchange Agreement We entered into an exchange agreement and a related amendment on November 29, 2022 and December 9, 2022, respectively, (the “Exchange Agreement”) with holders of approximately $475 million of our 2016 Senior Unsecured Notes (refer to Note 6). The Exchange Agreement provided for the exchange (the “Notes Exchange”) of the holders’ approximately $475 million 2016 Senior Unsecured Notes for newly issued senior unsecured notes with interest at 13.25% per annum (the “2022 Senior Unsecured Notes”). The 2022 Senior Unsecured Notes were issued at a ratio of $1,052.63 in principal amount for each $1,000 aggregate principal amount of 2016 Senior Unsecured Notes, plus accrued interest, under an indenture dated as of December 9, 2022. The 2022 Senior Unsecured Notes are redeemable by us at a price equal to 100% of the principal amount through June 15, 2024, and at specified, fixed premiums thereafter, in each case plus accrued interest. The 2022 Senior Unsecured Notes are unsecured, unsubordinated obligations and are guaranteed by certain of our restricted subsidiaries, as well as certain future restricted subsidiaries or subsidiaries that incur more than $25.0 million in debt. The 2022 Senior Unsecured Notes mature on December 15, 2027. Interest on the 2022 Senior Unsecured Notes is payable semi-annually in arrears on June 15 and December 15, commencing on June 15, 2023. Exchange Settlements We completed the initial settlement (the “Initial Settlement”), a second settlement and a final settlement under the Exchange Agreement on December 9, 2022, December 14, 2022 and December 19, 2022, respectively, whereby we issued $502.5 million in aggregate principal amount of 2022 Senior Unsecured Notes, and consequently cancelled $477.3 million in aggregate principal amount of 2016 Senior Unsecured Notes. Following the final settlement, $22.7 million in aggregate principal amount of 2016 Senior Unsecured Notes remain outstanding. Supplemental Indenture Concurrently with the Initial Settlement, we entered into a supplemental indenture to the existing indenture governing the 2016 Senior Unsecured Notes. As of the Initial Settlement, the supplemental indenture provided for, among other things, certain amendments to the existing indenture governing the 2016 Senior Unsecured Notes, including modifying our and our restricted subsidiaries ability to incur certain additional debt, pay certain dividends or distributions and make certain investments.

SCHEDULE II - VALUATION AND QUA

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES	12 Months Ended
	Sep. 30, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS AND RESERVES FOR THE FISCAL YEARS ENDED SEPTEMBER 30, 2022, 2021 and 2020 Column A Column B Column C Column D (in thousands) Balances at Charges to (Additions) Deductions Balances Fiscal Year ended September 30, 2022 Reserves and allowances deducted from asset accounts: Reserves for uncollectible accounts: $ 19,367 $ 6,095 $ 1,444 $ 24,018 Fiscal Year ended September 30, 2021 Reserves and allowances deducted from asset accounts: Reserves for uncollectible accounts: $ 16,313 $ 4,709 $ 1,655 $ 19,367 Fiscal Year ended September 30, 2020 Reserves and allowances deducted from asset accounts: Reserves for uncollectible accounts: $ 11,715 $ 4,592 $ (6) $ 16,313

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying Financial Statements include the accounts of the Company and its majority and wholly-owned subsidiaries and entities. The accounts of MGE Niagara Entertainment Inc. (“MGE Niagara”) are consolidated into the accounts of the Company as MGE Niagara is a variable interest entity and the Company is deemed to be the primary beneficiary of MGE Niagara. In consolidation, all intercompany balances and transactions are eliminated.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“US GAAP”) requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures of contingent assets and liabilities. Actual amounts could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of deposits that can be redeemed on demand and highly liquid investments with original maturities of three months or less from the date of purchase. Cash and cash equivalents include all operating cash and in-house funds.
Restricted Cash and Cash Equivalents	Restricted Cash and Cash Equivalents Restricted cash and cash equivalents consist of deposits that are restricted as to their withdrawal or use. Restricted cash and cash equivalents primarily include cash intended to be used for Inspire Korea.
Accounts Receivable	Accounts ReceivableAccounts receivable consists of casino receivables, which represent credit extended to approved casino customers, and hotel and other non-gaming receivables. We maintain a reserve for doubtful collection of these receivables, which primarily relates to casino receivables.
Inventories	InventoriesInventories are stated at the lower of cost or net realizable value and consist primarily of food and beverage, retail, hotel and operating supplies. Cost is determined using the average cost method.
Due from/to Ontario Lottery and Gaming Corporation	Due from/to Ontario Lottery and Gaming CorporationOn a bi-weekly basis, the Ontario Lottery and Gaming Corporation remits estimated amounts due to us pursuant to the terms of the Casino Operating and Services Agreement. Any such remittance that is due, but not yet received, is recorded within due from Ontario Lottery and Gaming Corporation. Differences between actual and estimated amounts due are separately settled with the Ontario Lottery and Gaming Corporation on an annual basis, however, a quarterly interim reconciliation process is available. Any settlement amount owed to the Ontario Lottery and Gaming Corporation is recorded within due to Ontario Lottery and Gaming Corporation.
Property and Equipment	Property and Equipment Property and equipment are stated at cost. Depreciation is recognized over the estimated useful lives of the assets, other than land, on a straight-line basis. Leasehold improvements are amortized over the shorter of the lease terms or the estimated useful lives of the improvements. Estimated useful lives by asset categories are as follows: Buildings and land improvements 40 years Furniture and equipment 3 - 7 years The costs of significant improvements are capitalized. Costs of normal repairs and maintenance are expensed as incurred.
Other Intangible Assets	Intangible Assets Intangible assets consist primarily of Mohegan Sun's trademark and Mohegan Pennsylvania's various gaming licenses. These intangible assets all have indefinite lives. Intangible assets with indefinite lives are assessed at least annually for impairment by comparing their fair value to their carrying value. However, these intangible assets may be assessed more frequently for impairment if events or changes in circumstances, such as declines in revenues, earnings and cash flows or material adverse changes in business climate, indicate that their carrying value may be impaired. Intangible assets with finite lives are assessed for impairment whenever events or circumstances indicate that their carrying value may not be recoverable. If necessary, an impairment charge is recognized when the carrying value of the asset (asset group) exceeds the estimated undiscounted cash flows expected from the use and eventual disposition of the asset (asset group). The amount of the impairment charge, if any, is calculated as the excess of the asset’s (asset group’s) carrying value over its fair value. The evaluation of intangible assets for impairment requires the use of estimates about future cash flows. Such estimates are, by their nature, subjective. Actual results may differ materially from our estimates and could result in impairment charges in the future.
Debt Issuance Costs	Debt Issuance Costs Debt issuance costs are amortized to interest expense based on the effective interest method.
Self-insurance Reserves	Self-insurance ReservesWe are self-insured up to certain limits for costs associated with workers’ compensation, general liability and employee medical coverage. Insurance claims and reserves include estimated settlements of known claims, as well as estimates of incurred but not reported claims. These reserves are recorded within other current liabilities. In estimating self-insurance reserves, we consider historical loss experiences and expected levels of costs per claim. Claims are accounted for based on estimates of undiscounted claims, including claims incurred but not reported.
Leases	Leases We account for leases in accordance with guidance provided by Accounting Standards Updates (“ASU”) No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires, among other things, lessees to recognize a right-of-use asset and liability for leases with terms in excess of 12 months. We determine if a contract is, or contains, a lease at its inception or at the time of any modification. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Control over the use of the identified asset requires that the lessee has both: (i) the right to obtain substantially all of the economic benefits from the use of the asset and (ii) the right to direct the use of the asset.
Leases	Leases We account for leases in accordance with guidance provided by Accounting Standards Updates (“ASU”) No. 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which requires, among other things, lessees to recognize a right-of-use asset and liability for leases with terms in excess of 12 months. We determine if a contract is, or contains, a lease at its inception or at the time of any modification. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. Control over the use of the identified asset requires that the lessee has both: (i) the right to obtain substantially all of the economic benefits from the use of the asset and (ii) the right to direct the use of the asset.
Warrants and Put Option	Warrants and Put OptionWe account for our warrants and put option liabilities in accordance with guidance provided by Accounting Standards Codification (“ASC”) Topic 815, “Derivatives and Hedging” (“ASC 815”). Under ASC 815 the warrants and put option do not meet the criteria for equity treatment. Accordingly, these instruments are classified as long-term liabilities and are re-measured at their estimated fair values at each reporting date. The estimated fair value of the warrants and put option was determined by utilizing the income approach (discounted cash flow method) and a binomial lattice model.
Revenue Recognition	Revenue Recognition Our revenues from contracts with customers consist of gaming, including racing and online casino gaming and sports wagering, food and beverage, hotel, retail, entertainment and convention related transactions, as well as management and development services related to management and development contracts with third-party facilities. The transaction price in a gaming contract is the difference between gaming wins and losses, not the total amount wagered. The transaction price in a racing contract, inclusive of live racing at our facilities, as well as import and export arrangements, is the commission received from the pari-mutuel pool less contractual fees and obligations, which primarily consist of purse funding requirements, simulcasting fees, tote fees and certain pari-mutuel taxes that are directly related to racing operations. The transaction price in online casino gaming and sports wagering is the share of the revenues that we expect to collect as the agent. The transaction prices in food and beverage, hotel, retail, entertainment and convention contracts are the net amounts collected for such goods and services. Sales and other taxes collected on behalf of governmental authorities are accounted for on a net basis and are not recorded within revenues or expenses. The transaction prices in management and development service contracts are the amounts collected for services rendered in accordance with contractual terms, inclusive of reimbursable costs and expenses. We recognize gaming revenues as amounts wagered less prizes paid out. Gaming transactions involve two performance obligations for customers participating in our loyalty reward programs and a single performance obligation for customers that do not participate. We apply a practical expedient by accounting for gaming contracts on a portfolio basis, as such contracts share similar characteristics. The effects on our Financial Statements under this approach do not differ materially versus under an individual contract basis. We utilize a deferred revenue model to reduce gaming revenues by the estimated fair value of loyalty points earned by customers. Revenues allocated to gaming performance obligations are recognized when gaming occurs as such activities are settled immediately. Revenues allocated to the loyalty points deferred revenue liability are recognized when loyalty points are redeemed. The deferred revenue liability is based on the estimated stand-alone selling price of loyalty points earned after factoring in the likelihood of redemption. Food and beverage, hotel, retail, entertainment and convention transactions have been determined to be separate, stand-alone performance obligations and revenues for such contracts are recognized when the related goods and services are transferred to customers. Revenues from contracts which include a combination of these transactions are allocated on a pro rata basis based on the stand-alone selling price of the goods and services. Revenues from food and beverage, hotel, retail, entertainment and other services, including revenues associated with loyalty point redemptions, are recognized at the time such service is performed. Minimum rental revenues are recognized on a straight-line basis over the terms of the related leases. Percentage rental revenues are recognized in the periods in which the tenants exceed their respective percentage rent thresholds. Management and development services have been determined to be separate, stand-alone performance obligations, and revenues for such contracts are recognized when the related services are performed. We recognize management fees pursuant to the respective management agreement, usually as a percentage of the managed entity’s earnings during the period. Development fees are recognized pursuant to the respective development agreement, typically as a percentage of construction costs incurred during the period. Management and development fees are recorded within retail, entertainment and other revenues. We operate the Niagara Resorts under the terms of a 21-year Casino Operating and Services Agreement with the Ontario Lottery and Gaming Corporation. Pursuant to the laws of Canada and the Province of Ontario, the Ontario Lottery and Gaming Corporation retains legal authority to conduct and manage lottery schemes on behalf of the Province of Ontario. We are acting as a service provider to the Ontario Lottery and Gaming Corporation under the Casino Operating and Services Agreement and, therefore, recognize gaming revenues net of amounts due to the Ontario Lottery and Gaming Corporation. We retain all non-gaming revenues and recognize these amounts on a gross basis. The Casino Operating and Services Agreement represents a series of distinct goods and services and, therefore, is deemed to be a single performance obligation. The transaction price under the Casino Operating and Services Agreement includes both fixed and variable consideration. The fixed consideration is comprised of an annual service provider fee and additional consideration for permitted capital expenditures up to an annual cap. The fixed consideration is recognized as revenue on a straight-line basis over the term of the Casino Operating and Services Agreement. The variable consideration consists of 70% of Gaming Revenues (as defined under the Casino Operating and Services Agreement), in excess of a guaranteed annual minimum amount payable to the Ontario Lottery and Gaming Corporation (the “Threshold”). Annual Threshold amounts are contractually established and vary from year to year. If gaming revenues are less than the Threshold for any given year, we are obligated to make a payment to cover the related shortfall. The variable consideration is recognized as revenue as services are rendered under the terms of the Casino Operating and Services Agreement. We measure our progress in satisfying this performance obligation based on the output method, which aligns with the benefits provided to the Ontario Lottery and Gaming Corporation. Projected revenues are estimated based on the most likely amount within a range of possible outcomes to the extent that a significant reversal in the amount of cumulative revenues recognized is not probable of occurring. The difference between revenues recognized and cash received is recorded as an asset or a liability and classified as short-term or long-term based upon the anticipated timing of reversal. In the event an asset is recorded, such asset is assessed at least annually for impairment.
Gaming Costs and Expenses	Gaming Costs and Expenses Gaming costs and expenses primarily represent portions of gaming revenues that must be paid to the State of Connecticut and the Pennsylvania Gaming Control Board (the “PGCB”). Gaming costs and expenses also include, among other things, payroll costs, expenses associated with the operation of slot machines, table games, poker, online casino gaming, live harness racing, racebook and sportsbook, certain marketing expenditures and promotional expenses related to loyalty point and coupon redemptions.
Advertising Costs and Expenses	Advertising Costs and ExpensesProduction costs are expensed the first time the advertisement takes place. Prepaid rental fees associated with billboard advertisements are capitalized and amortized over the terms of the related agreements. Advertising costs and expenses totaled $36.1 million, $19.3 million and $22.5 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively.
Pre-Opening Costs and Expenses	Pre-opening Costs and Expenses Costs of start-up activities are expensed as incurred. Pre-opening costs and expenses totaled $15.8 million, $37.1 million and $15.6 million for the fiscal years ended September 30, 2022, 2021 and 2020, respectively, and were recorded within other, net.
Income Taxes	Income Taxes Similar to other sovereign governments, the Mohegan Tribe and its entities, including the Company, are not subject to United States federal income taxes. However, certain of our non-tribal entities are subject to income taxes in various domestic and foreign jurisdictions. We account for income taxes in accordance with guidance provided by ASC Topic 740, “Income Taxes” (“ASC 740”). Under ASC 740, deferred tax assets and liabilities are determined based on the differences between the financial statement carrying amounts and the tax basis of existing assets and liabilities, and are measured at the prevailing enacted tax rates that will be in effect when these differences are settled or realized. ASC 740 requires that deferred tax assets be reduced by a valuation allowance if it is more-likely-than-not that some portion, or all, of the deferred tax assets will not be realized. ASC 740 also creates a single model to address uncertainty in tax positions and clarifies the accounting for uncertainty in income taxes recognized in an entity’s financial statements by prescribing the minimum recognition threshold a tax position is required to meet before being recognized in the entity's financial statements. In addition, ASC 740 provides guidance with respect to de-recognition, measurement, classification, interest and penalties, accounting in interim periods and disclosure requirements. Our uncertain tax positions are insignificant.
Foreign Currency	Foreign CurrencyThe financial position and operating results of foreign operations are consolidated using the local currency as the functional currency. Local currency assets and liabilities are translated at the end-of-period rates, while local currency revenues and expenses are translated at the average rates in effect during the period. Local currency equity is translated at historical rates and the resulting cumulative translation adjustments are recorded as a component of accumulated other comprehensive income or loss.
Fair Value of Financial Instruments	Fair Value of Financial Instruments We apply the following fair value hierarchy, which prioritizes the inputs utilized to measure fair value into three levels: • Level 1 - Quoted prices for identical assets or liabilities in active markets; • Level 2 - Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in inactive markets or valuations based on models where the significant inputs are observable or can be corroborated by observable market data; and • Level 3 - Valuations based on models where the significant inputs are unobservable. The unobservable inputs reflect our estimates or assumptions that market participants would utilize in pricing such assets or liabilities. Our assessment of the significance of a particular input requires judgment and may affect the valuation of financial assets and liabilities and their placement within the fair value hierarchy.
New Accounting Standards	Recently Issued Accounting Pronouncements ASU 2019-12 In December 2019, the Financial Accounting Standards Board (the “FASB”) issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes” (“ASU 2019-12”), which simplifies various aspects related to the accounting for income taxes. This new standard removes certain exceptions to the general principles in ASU 2019-12 and clarifies and amends existing guidance to improve consistent application. ASU 2019-12 was effective for annual reporting periods beginning after December 15, 2020. There was no effect on our financial statements from adopting this new standard. ASU 2021-10 In November 2021, the FASB issued ASU 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” (“ASU 2021-10”), which requires business entities to provide certain disclosures about government transactions that are accounted for by applying a grant or contribution accounting model by analogy to other accounting guidance. ASU 2021-10 is effective for annual reporting periods beginning after December 15, 2021. We are currently evaluating the effect ASU 2021-10 will have on our disclosures, but do not expect its adoption to have a material impact.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives by Asset Categories	Estimated useful lives by asset categories are as follows: Buildings and land improvements 40 years Furniture and equipment 3 - 7 years

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Revenue Disaggregation by Geographic Location For the Fiscal Year Ended September 30, 2022 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 631,456 $ 229,163 $ 213,165 $ 49,080 Food and beverage 90,722 16,005 23,782 4,215 Hotel 94,240 6,258 15,339 (9) Retail, entertainment and other 123,864 6,414 26,977 59,840 Net revenues $ 940,282 $ 257,840 $ 279,263 $ 113,126 For the Fiscal Year Ended September 30, 2021 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 604,482 $ 202,932 $ 87,406 $ 15,558 Food and beverage 59,611 8,718 2,837 2,465 Hotel 77,282 4,946 2,091 (12) Retail, entertainment and other 75,001 4,883 6,868 74,025 Net revenues $ 816,376 $ 221,479 $ 99,202 $ 92,036 For the Fiscal Year Ended September 30, 2020 (in thousands) Connecticut Pennsylvania Canada Other Gaming $ 518,599 $ 159,661 $ 121,387 $ — Food and beverage 64,012 12,208 27,544 (86) Hotel 58,219 4,578 6,319 (3) Retail, entertainment and other 74,844 4,713 24,775 38,019 Net revenues $ 715,674 $ 181,160 $ 180,025 $ 37,930
Schedule of Accounts Receivable, Net	Accounts Receivable (in thousands) September 30, 2022 September 30, 2021 Gaming $ 40,385 $ 37,921 Food and beverage 18 13 Hotel 5,601 3,106 Retail, entertainment and other 24,009 19,099 Accounts receivable 70,013 60,139 Allowance for doubtful accounts (24,018) (19,367) Accounts receivable, net $ 45,995 $ 40,772
Schedule of Contract and Contract-Related Liabilities	A difference may exist between the timing of cash receipts from customers and the recognition of revenues, resulting in a contract or contract-related liability. In general, we have three types of such liabilities: (1) outstanding gaming chips and slot tickets liability, which represents amounts owed in exchange for outstanding gaming chips and slot tickets held by customers, (2) loyalty points deferred revenue liability and (3) customer advances and other liability, which primarily represents funds deposited in advance by customers for gaming and advance payments by customers for goods and services such as advance ticket sales, deposits on rooms and convention space and gift card purchases. These liabilities are generally expected to be recognized as revenues within one year and are recorded within other current liabilities. (in thousands) September 30, 2022 September 30, 2021 Outstanding gaming chips and slot tickets liability $ 9,743 $ 9,632 Loyalty points deferred revenue liability 40,873 42,663 Customer advances and other liability 30,528 30,166 Total $ 81,144 $ 82,461

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	Property and equipment (in thousands) September 30, 2022 September 30, 2021 Land $ 44,848 $ 44,848 Land improvements 103,134 102,820 Buildings and improvements 1,869,455 1,860,005 Furniture and equipment 764,356 752,087 Construction in process (1) 424,867 255,909 Property and equipment 3,206,660 3,015,669 Accumulated depreciation (1,562,870) (1,484,050) Property and equipment, net $ 1,643,790 $ 1,531,619 _________ (1) As of September 30, 2022 and 2021, Inspire Korea related construction in process totaled $385.7 million and $233.5 million, respectively.

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Sep. 30, 2022
Other Intangible Assets Net [Abstract]
Schedule of Other Current Assets and Other Current Liabilities	(in thousands) September 30, 2022 September 30, 2021 Mohegan Sun trademark (1) $ 119,692 $ 119,692 Mohegan Pennsylvania gaming licenses (1) 171,904 171,904 Niagara Resorts Casino Operating and Services Agreement rights (2) 16,291 17,612 Other 10,748 25,717 Intangible assets 318,635 334,925 Accumulated amortization (7,109) (7,670) Intangible assets, net $ 311,526 $ 327,255 _________ (1) Indefinite lives. (2) 21-year useful life.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	12 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Long-term debt instruments	September 30, 2022 September 30, 2021 (in thousands) Final Maturity Face Value Book Value Book Value Senior Secured Credit Facility 2024 $ — $ — $ 27,000 Line of Credit 2024 18,000 18,000 20,227 2021 8% Senior Secured Notes 2026 1,175,000 1,161,164 1,157,731 2016 7 7/8% Senior Unsecured Notes 2024 500,000 495,531 493,599 Niagara Credit Facility Revolving 2024 — — 27,534 Swingline 2024 — — 4,333 Term Loan 2024 60,945 60,453 68,965 Niagara Convertible Debenture 2040 29,108 29,108 31,468 Korea Credit Facility 2025 362,455 315,475 — Korea Term Loan 2027 311,998 211,425 — Expo Credit Facility (1) 2022 — — 25,697 Guaranteed Credit Facility 2023 25,156 24,875 27,208 Redemption Note Payable 2024 38,880 35,261 53,130 Other Varies 661 661 1,862 Long-term debt 2,522,203 2,351,953 1,938,754 Current portion of long-term debt (47,402) (47,402) (80,276) Long-term debt, net of current portion $ 2,474,801 $ 2,304,551 $ 1,858,478 Fair value $ 2,178,852 Unamortized discounts and debt issuance costs $ 170,250 $ 34,022 _________ (1) Repaid at maturity on April 1, 2022.
Schedule of Maturities of Long-term Debt	Maturities of long-term debt, excluding unamortized debt issuance costs and discounts, are as follows: (in thousands) Fiscal years: 2023 $ 47,402 2024 95,807 2025 500,025 2026 1,537,480 2027 312,022 Thereafter 29,467 Total $ 2,522,203
Schedule of Warrants and Put Option	Warrants and Put Option (in thousands) Balance, September 30, 2021 $ — Additions 90,320 Unrealized gain (43,020) Balance, September 30, 2022 $ 47,300

Leases (Tables)

Leases (Tables)	12 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Schedule of Lease Cost	Information related to weighted average lease terms and discount rates is as follows: September 30, 2022 Weighted average remaining lease terms (years): Operating leases 21 Finance leases 18 Weighted average discount rates: Operating leases 7.84 % Finance leases 6.88 % The components of lease expense are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Operating lease expense $ 44,065 $ 45,458 $ 38,414 Short-term lease expense 43,642 33,438 27,121 Variable lease expense 18,133 17,427 12,922 Finance lease expense: Amortization of right-of-use assets 6,494 4,459 2,401 Interest on lease liabilities 8,740 5,059 1,547 Sublease income (1) (38,298) (23,147) (20,791) Total $ 82,776 $ 82,694 $ 61,614 _________ (1) Represents income earned from the rental of hotel, convention or retail space at the Niagara Resorts and the Earth Hotel Tower at Mohegan Sun, both of which are leased properties. Supplemental cash flow information related to lease liabilities is as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Payments on operating lease obligations $ 38,842 $ 20,747 $ 22,844 Payments for interest on finance lease obligations 4,714 345 889 Payments on finance lease obligations 5,553 1,145 1,298 Total $ 49,109 $ 22,237 $ 25,031
Schedule of Operating Lease Liability	Maturities of lease obligations are as follows: (in thousands) Operating Leases Finance Leases Fiscal years: 2023 $ 36,788 $ 12,790 2024 38,133 12,354 2025 37,555 11,849 2026 37,827 11,658 2027 38,087 11,240 Thereafter 707,304 148,971 Total future lease payments 895,694 208,862 Amounts representing interest (533,082) (96,744) Residual values — 350 Present value of future lease payments 362,612 112,468 Current portion of lease obligations (5,473) (4,491) Lease obligations, net of current portion $ 357,139 $ 107,977
Schedule of Finance Lease Liability	Maturities of lease obligations are as follows: (in thousands) Operating Leases Finance Leases Fiscal years: 2023 $ 36,788 $ 12,790 2024 38,133 12,354 2025 37,555 11,849 2026 37,827 11,658 2027 38,087 11,240 Thereafter 707,304 148,971 Total future lease payments 895,694 208,862 Amounts representing interest (533,082) (96,744) Residual values — 350 Present value of future lease payments 362,612 112,468 Current portion of lease obligations (5,473) (4,491) Lease obligations, net of current portion $ 357,139 $ 107,977
Schedule of Rent Expense	Rental income consists of the following: For the Fiscal Years Ended September 30, 2022 September 30, 2021 September 30, 2020 (in thousands) Hotel Retail, Hotel Retail, Hotel Retail, Fixed rent $ 66,375 $ 6,799 $ 53,904 $ 5,226 $ 42,473 $ 7,160 Variable rent — 10,885 — 5,314 — 4,176 Total $ 66,375 $ 17,684 $ 53,904 $ 10,540 $ 42,473 $ 11,336
Schedule of Lease Payments to Be Received	Fixed rental income that we expect to earn under non-cancelable operating leases, exclusive of amounts under contingent rent escalation clauses, is as follows: (in thousands) Fixed Rental Income Fiscal years: 2023 $ 6,781 2024 5,978 2025 4,990 2026 4,612 2027 3,220 Thereafter 8,984 Total $ 34,565
Schedule of Property and Equipment	The portions of Mohegan Sun, including the Sky Hotel Tower and the Earth Expo & Convention Center, and Mohegan Pennsylvania that are leased to third parties under operating leases are recorded within property and equipment, net as follows: (in thousands) September 30, 2022 September 30, 2021 Property and equipment, at cost $ 487,180 $ 491,673 Accumulated depreciation (233,344) (218,873) Property and equipment, net $ 253,836 $ 272,800

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Schedule of Income or Loss Before Income Tax	The components of income (loss) before income tax are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Domestic $ 104,432 $ 57,138 $ (124,227) Foreign (20,426) (56,138) (44,483) Income (loss) before income tax $ 84,006 $ 1,000 $ (168,710)
Schedule of Components of Income Tax	The components of income tax are as follows: For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Current: Federal $ — $ — $ — State 292 (325) (355) Foreign — — — Total 292 (325) (355) Non-current: Federal — — — State — — — Foreign (9,102) 6,678 7,049 Total (9,102) 6,678 7,049 Income tax benefit (provision) $ (8,810) $ 6,353 $ 6,694
Schedule of Deferred Income Tax Assets and Liabilities	The tax effect of these temporary differences are recorded within deferred income tax assets or liabilities as follows: September 30, 2022 September 30, 2021 Deferred income tax assets: Foreign net operating loss carryforward $ 18,058 $ 26,188 Lease obligations 91,447 92,243 Limitation on interest expense deduction 9,749 — Accumulated book depreciation in excess of tax depreciation 6,909 8,336 Other 1,493 29 Valuation allowance (19,919) — Total 107,737 126,796 Deferred income tax liabilities: Casino Operating and Services Agreement contract asset (23,137) (31,685) Right-of-use lease assets (80,728) (81,656) Other (46) (127) Total (103,911) (113,468) Deferred income tax asset, net (1) $ 3,826 $ 13,328 _________ (1) Recorded within other assets, net.
Schedule of Operating Loss Carryforwards	Such deferred tax assets expire as follows: (in thousands) Fiscal years: 2025 through 2029 $ 10,707 2030 through 2034 3,522 2035 through 2039 66,636 2040 through 2042 33,386 Indefinite 3,546 Total $ 117,797

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of Financial Information Related to Segments	Net Revenues For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 940,282 $ 816,376 $ 715,674 Mohegan Pennsylvania 257,840 221,479 181,160 Niagara Resorts 279,263 99,202 180,025 Management, development and other 62,221 70,009 37,189 All other 54,619 18,780 — Corporate 575 3,247 741 Inter-segment (4,289) (260) 173 Net revenues $ 1,590,511 $ 1,228,833 $ 1,114,962 Income (Loss) from Operations For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 213,654 $ 202,311 $ 128,449 Mohegan Pennsylvania 43,956 32,534 (115,073) Niagara Resorts 38,892 (22,638) (24,676) Management, development and other (15,948) 17,162 1,585 All other 7,158 (1,534) — Corporate (41,538) (43,358) (23,439) Inter-segment 60 (20) (63) Income (loss) from operations $ 246,234 $ 184,457 $ (33,217) Capital Expenditures Incurred For the Fiscal Years Ended (in thousands) September 30, 2022 September 30, 2021 September 30, 2020 Mohegan Sun $ 29,353 $ 23,250 $ 17,600 Mohegan Pennsylvania 11,316 6,063 3,559 Niagara Resorts 17,232 14,079 17,799 Management, development and other 249,569 7,773 137,171 All other 49 88,725 — Corporate 1,415 307 545 Capital expenditures incurred $ 308,934 $ 140,197 $ 176,674 Total Assets (in thousands) September 30, 2022 September 30, 2021 Mohegan Sun $ 1,226,689 $ 1,267,538 Mohegan Pennsylvania 405,455 408,187 Niagara Resorts 474,281 561,812 Management, development and other 869,117 407,831 All other 98,947 98,945 Corporate 1,010,984 996,040 Inter-segment (1,036,556) (1,010,476) Total assets $ 3,048,917 $ 2,729,877

Organization (Details)

Organization (Details) ft² in Thousands, m² in Millions	12 Months Ended
	Sep. 30, 2022 m² ft² a facility mi
Entity Information [Line Items]
Distance from property | mi	16
Mohegan Sun
Entity Information [Line Items]
Area of real estate | a	196
Mohegan Pennsylvania
Entity Information [Line Items]
Area of real estate | a	400
Inspire Korea
Entity Information [Line Items]
Area of real estate | m²	4.4
Mohegan Casino Las Vegas
Entity Information [Line Items]
Area of real estate | ft²	60
Resorts Casino Hotel | Resorts Casino Hotel
Entity Information [Line Items]
Percent ownership	10%
United States
Entity Information [Line Items]
Number of integrated entertainment facilities	2
United States and Canada
Entity Information [Line Items]
Number of integrated entertainment facilities	5
Connecticut
Entity Information [Line Items]
Number of facilities	2
Connecticut | Mohegan Sun
Entity Information [Line Items]
Number of facilities	1
Pennsylvania
Entity Information [Line Items]
Number of facilities	16
Pennsylvania | Mohegan Pennsylvania
Entity Information [Line Items]
Number of facilities	1
Niagara, Canada | Niagara Resorts
Entity Information [Line Items]
Number of facilities	2
Atlantic City, New Jersey
Entity Information [Line Items]
Number of facilities	9
Atlantic City, New Jersey | Resorts Casino Hotel
Entity Information [Line Items]
Number of facilities	1

Basis of Presentation and Sum_4

Basis of Presentation and Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Sep. 30, 2022
Buildings and land improvements
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years

Basis of Presentation and Sum_5

Basis of Presentation and Summary of Significant Accounting Policies - Revenue Recognition (Details)	1 Months Ended	12 Months Ended
	Jun. 30, 2021	Sep. 30, 2022
Revenue Benchmark | Product Concentration Risk | Gaming Revenues
Lessee, Lease, Description [Line Items]
Concentration risk, percentage		70%
Ontario Lottery and Gaming Corporation
Lessee, Lease, Description [Line Items]
Operating agreement, annual threshold, period	3 years
Niagara Resorts Casino Operating and Services Agreement Thresholds
Lessee, Lease, Description [Line Items]
Term of contract		21 years

Basis of Presentation and Sum_6

Basis of Presentation and Summary of Significant Accounting Policies - Advertising Costs and Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Accounting Policies [Abstract]
Advertising expense	$ 36.1	$ 19.3	$ 22.5

Basis of Presentation and Sum_7

Basis of Presentation and Summary of Significant Accounting Policies - Pre-Opening Costs and Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Accounting Policies [Abstract]
Pre-opening costs and expenses	$ 15.8	$ 37.1	$ 15.6

Revenue Recognition - Revenue D

Revenue Recognition - Revenue Disaggregation (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Connecticut
Disaggregation of Revenue [Line Items]
Gross revenues	$ 940,282	$ 816,376	$ 715,674
Pennsylvania
Disaggregation of Revenue [Line Items]
Gross revenues	257,840	221,479	181,160
Canada
Disaggregation of Revenue [Line Items]
Gross revenues	279,263	99,202	180,025
Other
Disaggregation of Revenue [Line Items]
Gross revenues	113,126	92,036	37,930
Gaming
Disaggregation of Revenue [Line Items]
Gross revenues	1,122,864	910,378	799,647
Gaming | Connecticut
Disaggregation of Revenue [Line Items]
Gross revenues	631,456	604,482	518,599
Gaming | Pennsylvania
Disaggregation of Revenue [Line Items]
Gross revenues	229,163	202,932	159,661
Gaming | Canada
Disaggregation of Revenue [Line Items]
Gross revenues	213,165	87,406	121,387
Gaming | Other
Disaggregation of Revenue [Line Items]
Gross revenues	49,080	15,558	0
Food and beverage
Disaggregation of Revenue [Line Items]
Gross revenues	134,724	73,631	103,678
Food and beverage | Connecticut
Disaggregation of Revenue [Line Items]
Gross revenues	90,722	59,611	64,012
Food and beverage | Pennsylvania
Disaggregation of Revenue [Line Items]
Gross revenues	16,005	8,718	12,208
Food and beverage | Canada
Disaggregation of Revenue [Line Items]
Gross revenues	23,782	2,837	27,544
Food and beverage | Other
Disaggregation of Revenue [Line Items]
Gross revenues	4,215	2,465	(86)
Hotel
Disaggregation of Revenue [Line Items]
Gross revenues	115,828	84,307	69,113
Hotel | Connecticut
Disaggregation of Revenue [Line Items]
Gross revenues	94,240	77,282	58,219
Hotel | Pennsylvania
Disaggregation of Revenue [Line Items]
Gross revenues	6,258	4,946	4,578
Hotel | Canada
Disaggregation of Revenue [Line Items]
Gross revenues	15,339	2,091	6,319
Hotel | Other
Disaggregation of Revenue [Line Items]
Gross revenues	(9)	(12)	(3)
Retail, entertainment and other | Connecticut
Disaggregation of Revenue [Line Items]
Gross revenues	123,864	75,001	74,844
Retail, entertainment and other | Pennsylvania
Disaggregation of Revenue [Line Items]
Gross revenues	6,414	4,883	4,713
Retail, entertainment and other | Canada
Disaggregation of Revenue [Line Items]
Gross revenues	26,977	6,868	24,775
Retail, entertainment and other | Other
Disaggregation of Revenue [Line Items]
Gross revenues	$ 59,840	$ 74,025	$ 38,019

Revenue Recognition - Accounts

Revenue Recognition - Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 70,013	$ 60,139
Allowance for doubtful accounts	(24,018)	(19,367)
Accounts receivable, net	45,995	40,772
Gaming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	40,385	37,921
Food and beverage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	18	13
Hotel
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	5,601	3,106
Retail, entertainment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 24,009	$ 19,099

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($) type	Sep. 30, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Contract assets	$ 87,500	$ 119,900
Number of types of liabilities | type	3
Contract related liabilities	$ 81,144	82,461
Mohegan Sun Pocono
Disaggregation of Revenue [Line Items]
Contract related liabilities	$ 14,400	$ 15,800

Revenue Recognition - Contract

Revenue Recognition - Contract and Contract-Related Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Revenue from External Customer [Line Items]
Contract related liabilities	$ 81,144	$ 82,461
Outstanding gaming chips and slot tickets liability
Revenue from External Customer [Line Items]
Contract related liabilities	9,743	9,632
Loyalty points deferred revenue liability
Revenue from External Customer [Line Items]
Contract related liabilities	40,873	42,663
Customer advances and other liability
Revenue from External Customer [Line Items]
Contract related liabilities	$ 30,528	$ 30,166

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	$ 3,206,660	$ 3,015,669
Accumulated depreciation	(1,562,870)	(1,484,050)
Property and equipment, net	1,643,790	1,531,619
Finance lease, right-of-use asset	97,800	105,200
Depreciation expense	101,100	103,800	$ 107,600
Impairment of tangible assets	23,565	0	0
Inspire Korea Project
Property, Plant and Equipment, Net, by Type [Abstract]
Capitalized interest	22,300	0	$ 7,600
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	44,848	44,848
Land improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	103,134	102,820
Buildings and improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	1,869,455	1,860,005
Furniture and equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	764,356	752,087
Construction in process
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	424,867	255,909
Construction in process | Inspire Korea Project
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, at cost	$ 385,700	$ 233,500

Intangible Assets - Schedule of

Intangible Assets - Schedule of Other Current Assets and Other Current Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 318,635	$ 334,925
Accumulated amortization	(7,109)	(7,670)
Intangible assets, net	311,526	327,255
Mohegan Sun trademark
Finite-Lived Intangible Assets [Line Items]
Other indefinite-lived intangible assets	119,692	119,692
Mohegan Pennsylvania gaming licenses
Finite-Lived Intangible Assets [Line Items]
Other indefinite-lived intangible assets	171,904	171,904
Niagara Resorts Casino Operating and Services Agreement rights
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, gross	$ 16,291	17,612
Useful life	21 years
Other
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, gross	$ 10,748	$ 25,717

Intangible Assets - Additional

Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Amortization	$ 1,400	$ 1,500	$ 1,400
Impairment of intangible assets	12,869	$ 0	$ 126,596
Inspire Korea
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 12,900

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Nov. 04, 2021	Sep. 30, 2021	Sep. 30, 2016
Debt Schedule [Abstract]
Long-term debt, face value	$ 2,522,203
Less: current portion of long-term debt, face value	(47,402)
Long-term debt, net of current portion, face value	2,474,801
Long-term debt	2,351,953		$ 1,938,754
Current portion of long-term debt	(47,402)		(80,276)
Long-term debt, net of current portion	2,304,551		1,858,478
Fair value	2,178,852
Unamortized discounts and debt issuance costs	170,250		34,022
Senior Secured Credit Facility | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	0
Long-term debt	0		27,000
Line of Credit | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	18,000
Long-term debt	$ 18,000		20,227
2021 8% Senior Secured Notes | Senior Notes
Debt Schedule [Abstract]
Interest rate, stated	8%
Long-term debt, face value	$ 1,175,000
Long-term debt	1,161,164		1,157,731
2016 7 7/8% Senior Unsecured Notes | Senior Notes
Debt Schedule [Abstract]
Long-term debt, face value	500,000
Long-term debt	$ 495,531		493,599
2016 7 7/8% Senior Unsecured Notes | Senior Unsecured Notes
Debt Schedule [Abstract]
Interest rate, stated	7.875%			7.875%
Long-term debt, face value				$ 500,000
Niagara Credit Facility - Revolving | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	$ 0
Long-term debt	0		27,534
Niagara Credit Facility - Swingline | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	0
Long-term debt	0		4,333
Niagara Credit Facility - Term Loan | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	60,945
Long-term debt	60,453		68,965
Niagara Convertible Debenture | Convertible Debenture
Debt Schedule [Abstract]
Long-term debt, face value	29,108
Long-term debt	29,108		31,468
Inspire Korea Credit Facility | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	362,455
Long-term debt	315,475		0
Korea Term Loan
Debt Schedule [Abstract]
Interest rate, stated		17%
Korea Term Loan | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	311,998
Long-term debt	211,425		0
Mohegan Expo Credit Facility | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	0
Long-term debt	0		25,697
BIA Loan Guaranty Program (Guaranteed Credit Facility) | Credit Facility
Debt Schedule [Abstract]
Long-term debt, face value	25,156
Long-term debt	24,875		27,208
Redemption note payable | Redemption Note Payable
Debt Schedule [Abstract]
Long-term debt, face value	38,880
Long-term debt	35,261		53,130
Other | Senior Unsecured Notes
Debt Schedule [Abstract]
Long-term debt, face value	661
Long-term debt	$ 661		$ 1,862

Long-Term Debt - Fiscal Year Ma

Long-Term Debt - Fiscal Year Maturity (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2023	$ 47,402
2024	95,807
2025	500,025
2026	1,537,480
2027	312,022
Thereafter	29,467
Total	$ 2,522,203

Long-Term Debt - Senior Secured

Long-Term Debt - Senior Secured Credit Facility (Details) - Credit Facility - USD ($) $ in Thousands			12 Months Ended
	May 31, 2022	Jan. 26, 2021	Sep. 30, 2022
New Senior Secured Credit Facility
Debt Instrument [Line Items]
Borrowing capacity		$ 262,875
Undrawn commitment fee percentage			0.50%
Letters of credit issued			$ 1,900
Remaining borrowing capacity			$ 243,000
New Senior Secured Credit Facility | Minimum
Debt Instrument [Line Items]
Undrawn commitment fee percentage		0.375%
New Senior Secured Credit Facility | Maximum
Debt Instrument [Line Items]
Undrawn commitment fee percentage		0.50%
Senior Secured Credit Facility, SOFR Loans | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.10%
Senior Secured Credit Facility, SOFR Loans | SOFR Floor
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Senior Secured Credit Facility, SOFR Loans | Leverage-Based Margin | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	2%
Senior Secured Credit Facility, SOFR Loans | Leverage-Based Margin | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Senior Secured Credit Facility, Base Rate Loans | Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Senior Secured Credit Facility, Base Rate Loans | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.10%
Senior Secured Credit Facility, Base Rate Loans | SOFR Floor
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Senior Secured Credit Facility, Base Rate Loans | Leverage-Based Margin
Debt Instrument [Line Items]
Basis spread on variable rate		1%
Senior Secured Credit Facility, Base Rate Loans | Leverage-Based Margin | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		1%
Senior Secured Credit Facility, Base Rate Loans | Leverage-Based Margin | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate		2.75%

Long-Term Debt - Line of Credit

Long-Term Debt - Line of Credit (Details) - New Senior Secured Credit Facility - Credit Facility - USD ($) $ in Thousands	Sep. 30, 2022	Jan. 31, 2021	Jan. 26, 2021
Debt Instrument [Line Items]
Borrowing capacity			$ 262,875
Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity		$ 25,000
Interest rate, stated	6.27%

Long-Term Debt - 2021 8 Percent

Long-Term Debt - 2021 8 Percent Senior Secured Notes (Details) - 2021 Senior Unsecured Notes - Senior Notes $ in Millions	1 Months Ended
	Jan. 31, 2021 USD ($)
Debt Instrument [Line Items]
Proceeds from issuance of senior secured notes	$ 1,175
Note stated interest rate	8%
Prior to February 1, 2023
Debt Instrument [Line Items]
Redemption price (as a percent)	100%
Redemption period	12 months
Initial twelve-month period, prior to February 1, 2023
Debt Instrument [Line Items]
Redemption price (as a percent)	103%
Initial twelve-month period, prior to February 1, 2023 | Maximum
Debt Instrument [Line Items]
Redemption period	12 months
Percent amount the can be redeemed	10%
Subsequent the initial twelve-month period, prior to February 1, 2023
Debt Instrument [Line Items]
Redemption period	12 months
Subsequent the initial twelve-month period, prior to February 1, 2023 | Maximum
Debt Instrument [Line Items]
Redemption period	12 months
Percent amount the can be redeemed	10%

Long-Term Debt - 2016 7 7_8 Per

Long-Term Debt - 2016 7 7/8 Percent Senior Unsecured Notes (Details) - USD ($) $ in Thousands	1 Months Ended
	Oct. 31, 2016	Sep. 30, 2022	Sep. 30, 2016
Debt Instrument [Line Items]
Loan face amount		$ 2,522,203
Senior Unsecured Notes | 2016 7 7/8% Senior Unsecured Notes
Debt Instrument [Line Items]
Loan face amount			$ 500,000
Interest rate, stated		7.875%	7.875%
Senior Unsecured Notes | 2016 7 7/8% Senior Unsecured Notes | Redeemable rate upon change of control
Debt Instrument [Line Items]
Redemption price (as a percent)	101%
Senior Unsecured Notes | 2016 7 7/8% Senior Unsecured Notes | Redeemable rate upon certain asset sales
Debt Instrument [Line Items]
Redemption price (as a percent)	100%
Senior Unsecured Notes | 2016 7 7/8% Senior Unsecured Notes | Redemption of debt instrument in period four
Debt Instrument [Line Items]
Redemption price (as a percent)	100%

Long-Term Debt - Niagara Credit

Long-Term Debt - Niagara Credit Facilities (Details) $ in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Jun. 30, 2019 CAD ($)	Sep. 30, 2022 USD ($)	Jul. 31, 2021 CAD ($)
Niagara Revolving Facility
Debt Instrument [Line Items]
Borrowing capacity			$ 180
Commitment fee percentage		1.25%
Niagara Revolving Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage	0.75%
Niagara Revolving Facility | Maximum
Debt Instrument [Line Items]
Commitment fee percentage	1.25%
Niagara Revolving Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit issued		$ 25.5
Remaining borrowing capacity		$ 120.1
MGE Niagara Swingline Facility
Debt Instrument [Line Items]
Borrowing capacity			25
MGE Niagara Term Loan Facility
Debt Instrument [Line Items]
Debt, weighted average interest rate		8.69%
MGE Niagara Term Loan Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity			$ 90
MGE Niagara Term Loan Facility | Credit Facility
Debt Instrument [Line Items]
Debt instrument, quarterly installment	$ 5

Long-Term Debt - Niagara Conver

Long-Term Debt - Niagara Convertible Debenture (Details) - Niagara Convertible Debentures - Convertible Debenture - USD ($) $ in Millions	1 Months Ended
	Jun. 30, 2019	Sep. 30, 2022	Jun. 30, 2020
Debt Instrument [Line Items]
Borrowing capacity		$ 40
Debt instrument, convertible, percent of capital shares	40%
Interest rate, effective			3.50%
Debt instrument, interest rate, effective percentage, after sixth anniversary	8%
Accrued interest due days	30 days

Long-Term Debt - Korea Credit F

Long-Term Debt - Korea Credit Facility and Term Loan (Details) $ / shares in Units, $ in Thousands, ₩ in Billions		1 Months Ended	12 Months Ended
	Nov. 04, 2021 USD ($) $ / shares shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 KRW (₩) tranche
Short-term Debt [Line Items]
Debt issuance costs incurred			$ 66,301	$ 24,586	$ 13,752
Proceeds from line of credit			1,064,176	$ 1,056,296	$ 730,772
Inspire Korea Credit Facility
Short-term Debt [Line Items]
Borrowing capacity | ₩						₩ 1,040
Number of tranches | tranche						2
Debt instrument, term		48 months
Period after first draw for prepayment		1 year
Commitment fee percentage		0.30%
Credit enhancement support		$ 100,000
Debt issuance costs incurred			59,100
Inspire Korea Credit Facility | Tranche A Loans
Short-term Debt [Line Items]
Borrowing capacity | ₩						₩ 740
Interest rate, stated						5.40%
Inspire Korea Credit Facility | Tranche B Loans
Short-term Debt [Line Items]
Borrowing capacity | ₩						₩ 300
Interest rate, stated						7%
Loan interest reserve period		36 months
Inspire Korea Credit Facility | Minimum
Short-term Debt [Line Items]
Interest rate, stated						5.40%
Inspire Korea Credit Facility | Maximum
Short-term Debt [Line Items]
Interest rate, stated						8.10%
Korea Term Loan
Short-term Debt [Line Items]
Debt instrument, term	66 months
Interest rate, stated	17%
Debt issuance costs incurred			9,300
Proceeds from line of credit	$ 275,000
Fixed charge percentage from share capital and debenture	100%
Debt discounts totaling	$ 90,300
Korea Warrants And Put Option Liability
Short-term Debt [Line Items]
Debt issuance costs incurred			$ 4,200
Number of warrants (in shares) | shares	4,400
Initial warrant exercise price (in dollars per share) | $ / shares	$ 0.01
Warrants, fully-diluted share capital percentage	22%
Aggregate purchase price	$ 110,000
Korea Warrants And Put Option Liability | Warrants And Put Option | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Short-term Debt [Line Items]
Warrants, unobservable inputs (as a percent)			0.120
Korea Warrants And Put Option Liability | Warrants And Put Option | Measurement Input, Price Volatility | Valuation Technique, Discounted Cash Flow
Short-term Debt [Line Items]
Warrants, unobservable inputs (as a percent)			0.550
Korea Warrants And Put Option Liability | Put Option
Short-term Debt [Line Items]
Warrants exercisable period	6 years
Korea Warrants And Put Option Liability | Call Option
Short-term Debt [Line Items]
Warrants exercisable period	6 months

Long-Term Debt - Warrants and P

Long-Term Debt - Warrants and Put Option (Details) - Warrants And Put Option $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0
Additions	90,320
Unrealized gain	(43,020)
Ending balance	$ 47,300

Long-Term Debt - Guaranteed Cre

Long-Term Debt - Guaranteed Credit Facility (Details) - Credit Facility - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2018
BIA Loan Guaranty Program (Guaranteed Credit Facility And Second Guaranteed Credit Facility)
Debt Instrument [Line Items]
Long-term debt		$ 35
BIA Loan Guaranty Program (Guaranteed Credit Facility)
Debt Instrument [Line Items]
Credit facility payment	$ 2.6
Interest rate, effective	5.31%

Long-Term Debt - Redemption Not

Long-Term Debt - Redemption Notes Payable (Details) - Note Payable to Banks - Redemption note payable $ in Millions	12 Months Ended
	Sep. 30, 2017 USD ($)
Debt Instrument [Line Items]
Redemption price of membership interest	$ 114.8
Equal monthly installments	$ 1.9
Periodic payment of debt instrument	5 years

Leases - Additional Information

Leases - Additional Information (Details)	Sep. 30, 2022
Minimum
Lessor, Lease, Description [Line Items]
Finance lease, contract term	1 month
Lessee, operating lease, contract term	1 month
Operating lease, contract term	1 month
Maximum
Lessor, Lease, Description [Line Items]
Finance lease, contract term	49 years
Lessee, operating lease, contract term	49 years
Operating lease, contract term	10 years

Leases - Lease Cost (Details)

Leases - Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Lease, Cost [Abstract]
Weighted average remaining lease term, Operating leases	21 years
Weighted average remaining lease term, Finance leases	18 years
Weighted average discount rate, Operating leases	7.84%
Weighted average discount rate, Finance leases	6.88%
Operating lease expense
Operating lease expense	$ 44,065	$ 45,458	$ 38,414
Short-term lease expense	43,642	33,438	27,121
Variable lease expense	18,133	17,427	12,922
Finance lease expense:
Amortization of right-of-use assets	6,494	4,459	2,401
Interest on lease liabilities	8,740	5,059	1,547
Less: sublease income	(38,298)	(23,147)	(20,791)
Total	$ 82,776	$ 82,694	$ 61,614

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Payments on operating lease obligations	$ 38,842	$ 20,747	$ 22,844
Payments for interest on finance lease obligations	4,714	345	889
Payments on finance lease obligations	5,553	1,145	1,298
Total	$ 49,109	$ 22,237	$ 25,031

Leases - Operating and Finance

Leases - Operating and Finance Lease Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Operating Leases
2023	$ 36,788
2024	38,133
2025	37,555
2026	37,827
2027	38,087
Thereafter	707,304
Total future lease payments	895,694
Amounts representing interest	(533,082)
Residual values	0
Present value of future lease payments	362,612
Current portion of lease obligations	(5,473)	$ (9,616)
Operating lease obligations, net of current portion	357,139	410,090
Finance Leases
2023	12,790
2024	12,354
2025	11,849
2026	11,658
2027	11,240
Thereafter	148,971
Total future lease payments	208,862
Amounts representing interest	(96,744)
Residual values	350
Present value of future lease payments	112,468
Current portion of lease obligations	(4,491)	(5,836)
Lease obligations, net of current portion	$ 107,977	$ 109,189

Leases - Lease Revenue (Details

Leases - Lease Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Lessor, Lease, Description [Line Items]
Operating Lease, Income, Comprehensive Income [Extensible List]	Gross revenues
Hotel
Lessor, Lease, Description [Line Items]
Fixed rent	$ 66,375	$ 53,904	$ 42,473
Variable rent	0	0	0
Total	66,375	53,904	42,473
Retail, entertainment and other
Lessor, Lease, Description [Line Items]
Fixed rent	6,799	5,226	7,160
Variable rent	10,885	5,314	4,176
Total	$ 17,684	$ 10,540	$ 11,336

Leases - Future Minimum Rentals

Leases - Future Minimum Rentals (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Leases [Abstract]
2023	$ 6,781
2024	5,978
2025	4,990
2026	4,612
2027	3,220
Thereafter	8,984
Total	$ 34,565

Leases - Cost and Accumulated D

Leases - Cost and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Lessee, Lease, Description [Line Items]
Property and equipment, at cost	$ 3,206,660	$ 3,015,669
Accumulated depreciation	(1,562,870)	(1,484,050)
Property and equipment, net	1,643,790	1,531,619
Mohegan Sun
Lessee, Lease, Description [Line Items]
Property and equipment, at cost	487,180	491,673
Accumulated depreciation	(233,344)	(218,873)
Property and equipment, net	$ 253,836	$ 272,800

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Rental expense	$ 44,065	$ 45,458	$ 38,414
Mohegan Tribal Utility Authority
Related Party Transaction [Line Items]
Utilities purchased from related party	$ 22,000	16,900	15,500
Mohegan Tribe
Related Party Transaction [Line Items]
Term of contract	25 years
Renewable period of additional term	25 years
Mohegan Tribal Finance Authority | Subleases
Related Party Transaction [Line Items]
Rental expense	$ 8,600	8,600	8,600
Mohegan Sun
Related Party Transaction [Line Items]
Expenses for services provided to related party	$ 37,500	$ 26,500	$ 22,900

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Compensation Related Costs [Abstract]
Maximum employer match as percent of employee contribution	50%
Maximum match from employer as a percent of participants' salary	6%
Contributions, net of forfeitures	$ 4.3	$ 2.1	$ 1.5
Deferred compensation plan assets	9.1	11.4
Benefit plan balance	$ 8.1	$ 7

Income Taxes - Components of In

Income Taxes - Components of Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Domestic	$ 104,432	$ 57,138	$ (124,227)
Foreign	(20,426)	(56,138)	(44,483)
Income (loss) before income tax	$ 84,006	$ 1,000	$ (168,710)

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Current:
Federal	$ 0	$ 0	$ 0
State	292	(325)	(355)
Foreign	0	0	0
Total	292	(325)	(355)
Non-current:
Federal	0	0	0
State	0	0	0
Foreign	(9,102)	6,678	7,049
Total	(9,102)	6,678	7,049
Total income tax provision	$ (8,810)	$ 6,353	$ 6,694

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Deferred income tax assets:
Foreign net operating loss carryforward	$ 18,058	$ 26,188
Lease obligations	91,447	92,243
Limitation on interest expense deduction	9,749	0
Accumulated book depreciation in excess of tax depreciation	6,909	8,336
Other	1,493	29
Valuation allowance	(19,919)	0
Total	107,737	126,796
Deferred income tax liabilities:
Casino Operating and Services Agreement contract asset	(23,137)	(31,685)
Right-of-use lease assets	(80,728)	(81,656)
Other	(46)	(127)
Total	(103,911)	(113,468)
Deferred income tax asset, net	$ 3,826	$ 13,328

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Tax Credit Carryforward [Line Items]
Net operating income	$ 75,196	$ 7,353	$ (162,016)
Operating loss carryforwards	117,800
Valuation allowance	19,919	$ 0
Niagara Resorts
Tax Credit Carryforward [Line Items]
Net operating income	$ 66,700

Income Taxes - Operating Loss C

Income Taxes - Operating Loss Carryforwards (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	$ 117,797
2025 through 2029
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	10,707
2030 through 2034
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	3,522
2035 through 2039
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	66,636
2040 through 2042
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	33,386
Indefinite
Operating Loss Carryforwards [Line Items]
Deferred tax assets, net operating loss carryforwards	$ 3,546

Segment Reporting (Details)

Segment Reporting (Details) $ in Thousands	12 Months Ended
	Sep. 30, 2022 USD ($) segment	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Revenues:
Net revenues	$ 1,590,511	$ 1,228,833	$ 1,114,962
Income (Loss) from Operations
Income (loss) from operations	246,234	184,457	(33,217)
Capital Expenditures Incurred
Capital expenditures incurred	308,934	140,197	176,674
ASSETS
Total assets	3,048,917	2,729,877
Operating segments | Mohegan Sun
Revenues:
Revenues	940,282	816,376	715,674
Income (Loss) from Operations
Income (loss) from operations	213,654	202,311	128,449
Capital Expenditures Incurred
Capital expenditures incurred	29,353	23,250	17,600
ASSETS
Total assets	1,226,689	1,267,538
Operating segments | Mohegan Pennsylvania
Revenues:
Revenues	257,840	221,479	181,160
Income (Loss) from Operations
Income (loss) from operations	43,956	32,534	(115,073)
Capital Expenditures Incurred
Capital expenditures incurred	11,316	6,063	3,559
ASSETS
Total assets	405,455	408,187
Operating segments | Niagara Resorts
Revenues:
Revenues	279,263	99,202	180,025
Income (Loss) from Operations
Income (loss) from operations	38,892	(22,638)	(24,676)
Capital Expenditures Incurred
Capital expenditures incurred	17,232	14,079	17,799
ASSETS
Total assets	474,281	561,812
Operating segments | Management, development and other
Revenues:
Revenues	62,221	70,009	37,189
Income (Loss) from Operations
Income (loss) from operations	(15,948)	17,162	1,585
Capital Expenditures Incurred
Capital expenditures incurred	249,569	7,773	137,171
ASSETS
Total assets	869,117	407,831
Operating segments | All other
Revenues:
Revenues	54,619	18,780	0
Income (Loss) from Operations
Income (loss) from operations	7,158	(1,534)	0
Capital Expenditures Incurred
Capital expenditures incurred	49	88,725	0
ASSETS
Total assets	98,947	98,945
Corporate
Revenues:
Revenues	575	3,247	741
Income (Loss) from Operations
Income (loss) from operations	(41,538)	(43,358)	(23,439)
Capital Expenditures Incurred
Capital expenditures incurred	1,415	307	545
ASSETS
Total assets	1,010,984	996,040
Inter-segment
Revenues:
Revenues	(4,289)	(260)	173
Income (Loss) from Operations
Income (loss) from operations	60	(20)	$ (63)
ASSETS
Total assets	$ (1,036,556)	$ (1,010,476)

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2019	Sep. 30, 2022
Commitments and Contingencies [Line Items]
Contribution determination criteria 2a, lesser of, percent of gross revenues from slot machines, greater of		25%
Contribution determination criteria 2b, lesser of, set cash contribution		$ 80
Purchase obligation		10.2
Purchase obligation, due in next twelve months		$ 3
Niagara Resorts Casino Operating and Services Agreement Thresholds
Commitments and Contingencies [Line Items]
Term of contract		21 years
Virgin Hotels Las Vegas Lease
Commitments and Contingencies [Line Items]
Term of contract	20 years
Annual lease payment	$ 9
Annual payments maximum amount	$ 15
Slot Win Contributions
Commitments and Contingencies [Line Items]
Contribution determination criteria 1, percent of gross revenues from slot machines, lesser of		30%
Pennsylvania Slot Machine Tax
Commitments and Contingencies [Line Items]
Tax rate applied to percent of gross revenues from slot machines		52%
Slot machine operation fee		$ 10
Priority Distribution Agreement
Commitments and Contingencies [Line Items]
Annual initial amount of priority distribution payments		$ 40

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	Dec. 19, 2022	Dec. 09, 2022	Sep. 30, 2022	Sep. 30, 2016
Subsequent Event [Line Items]
Loan face amount			$ 2,522,203
Long-term debt, gross			$ 2,522,203
2016 Senior Unsecured Notes | Senior Unsecured Notes
Subsequent Event [Line Items]
Loan face amount				$ 500,000
Interest rate, stated			7.875%	7.875%
Subsequent event | 2016 Senior Unsecured Notes | Senior Unsecured Notes
Subsequent Event [Line Items]
Loan face amount		$ 475,000
Interest rate, stated		7.875%
Long-term debt, gross	$ 22,700
Debt cancelled		$ 477,300
Subsequent event | 2022 Senior Unsecured Notes | Senior Unsecured Notes
Subsequent Event [Line Items]
Interest rate, stated		13.25%
Exchange ratio, principal amount		1.05263
Redemption price (as a percent)		100%
Guarantee threshold amount		$ 25,000
Proceeds from issuance	$ 502,500

SCHEDULE II - VALUATION AND Q_2

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - Reserves for uncollectible accounts - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balances at Beginning of Year	$ 19,367	$ 16,313	$ 11,715
Charges to Costs and Expenses	6,095	4,709	4,592
(Additions) Deductions from Reserves	1,444	1,655	(6)
Balances at End of Year	$ 24,018	$ 19,367	$ 16,313