CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Net revenues	$ 328,189	$ 107,199	$ 837,598	$ 820,952
Operating costs and expenses:
Advertising, general and administrative, including related party transactions of $6,327, $4,517, $22,604 and $23,129, respectively	55,661	35,672	154,165	172,768
Corporate, including related party transactions of $1,702, $1,679, $4,966 and $6,060, respectively	11,238	7,700	35,230	31,959
Depreciation and amortization	27,140	26,477	79,502	82,847
Impairment of Mohegan Sun Pocono's intangible assets	0	0	0	126,596
Other, net	11,037	2,656	28,843	9,000
Total operating costs and expenses	264,148	127,736	718,091	904,319
Income (loss) from operations	64,041	(20,537)	119,507	(83,367)
Other income (expense):
Interest income	125	270	129	1,549
Interest expense, net of capitalized interest	(43,929)	(32,478)	(128,256)	(98,830)
Loss on modification and early extinguishment of debt	(20)	0	(23,978)	0
Other, net	2,373	120	5,665	(2,904)
Total other expense	(41,451)	(32,088)	(146,440)	(100,185)
Income (loss) before income tax	22,590	(52,625)	(26,933)	(183,552)
Income tax benefit	3,312	2,696	10,101	3,016
Net income (loss)	25,902	(49,929)	(16,832)	(180,536)
Income attributable to non-controlling interests	(535)	(116)	(411)	(209)
Net income (loss) attributable to Mohegan Tribal Gaming Authority	25,367	(50,045)	(17,243)	(180,745)
Comprehensive income (loss):
Foreign currency translation adjustment	216	6,088	10,660	(1,076)
Other comprehensive income (loss)	216	6,088	10,660	(1,076)
Other comprehensive income attributable to non-controlling interests	0	(229)	(1,376)	(21)
Other comprehensive income (loss) attributable to Mohegan Tribal Gaming Authority	216	5,859	9,284	(1,097)
Comprehensive income (loss) attributable to Mohegan Tribal Gaming Authority	25,583	(44,186)	(7,959)	(181,842)
Gaming
Revenues:
Net revenues	241,289	89,379	623,674	569,642
Operating costs and expenses:
Operating costs and expenses	122,326	41,834	329,392	330,200
Food and beverage
Revenues:
Net revenues	20,826	3,009	45,209	91,098
Operating costs and expenses:
Operating costs and expenses	17,544	5,075	40,640	79,160
Hotel
Revenues:
Net revenues	22,188	2,589	55,882	50,293
Operating costs and expenses:
Operating costs and expenses	8,926	4,296	25,907	26,611
Retail, entertainment and other
Revenues:
Net revenues	43,886	12,222	112,833	109,919
Operating costs and expenses:
Operating costs and expenses	$ 10,276	$ 4,026	$ 24,412	$ 45,178