CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statements of Changes in Capital
Total capital at beginning of period	$ (164,167)	$ (93,602)	$ (133,242)	$ (67,989)
Net loss	(2,441)	(15,973)	(14,050)	(42,734)
Foreign currency translation adjustment	(8,440)	(10,533)	(13,416)	10,444
Contribution from Mohegan Tribe	325		325
Distributions to Mohegan Tribe	(14,000)	(12,000)	(28,000)	(24,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(222)		(562)	(261)
Other				(7,568)
Total capital at end of period	(188,945)	(132,108)	(188,945)	(132,108)
Retained Deficit
Statements of Changes in Capital
Total capital at beginning of period	(159,107)	(114,574)	(133,087)	(75,692)
Net loss	(2,783)	(15,989)	(14,463)	(42,610)
Distributions to Mohegan Tribe	(13,675)	(12,000)	(27,675)	(24,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(222)		(562)	(261)
Total capital at end of period	(175,787)	(142,563)	(175,787)	(142,563)
Additional Paid-in Capital
Statements of Changes in Capital
Total capital at beginning of period	0	0
Contribution from Mohegan Tribe	325		325
Distributions to Mohegan Tribe	(325)		(325)
Total capital at end of period	0	0	0	0
Accumulated Other Comprehensive Income (Loss)
Statements of Changes in Capital
Total capital at beginning of period	(7,041)	19,824	(2,065)	223
Foreign currency translation adjustment	(8,440)	(10,533)	(13,416)	9,068
Total capital at end of period	(15,481)	9,291	(15,481)	9,291
Total Capital Attributable to Mohegan Tribal Gaming Authority
Statements of Changes in Capital
Total capital at beginning of period	(166,148)	(94,750)	(135,152)	(75,469)
Net loss	(2,783)	(15,989)	(14,463)	(42,610)
Foreign currency translation adjustment	(8,440)	(10,533)	(13,416)	9,068
Contribution from Mohegan Tribe	325		325
Distributions to Mohegan Tribe	(14,000)	(12,000)	(28,000)	(24,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(222)		(562)	(261)
Total capital at end of period	(191,268)	(133,272)	(191,268)	(133,272)
Non-controlling Interests
Statements of Changes in Capital
Total capital at beginning of period	1,981	1,148	1,910	7,480
Net loss	342	16	413	(124)
Foreign currency translation adjustment				1,376
Other				(7,568)
Total capital at end of period	$ 2,323	$ 1,164	$ 2,323	$ 1,164