CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN CAPITAL - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Oct. 01, 2018
Statements of Changes in Capital
Total capital at beginning of period	$ 137,433	$ 270,794
Cumulative-effect adjustment for the adoption of ASC 606 Revenue from Contracts with Customers			$ (41,575)
Net income	9,424	10,708
Foreign currency translation adjustment	11,417	1,899
Distributions to Mohegan Tribe	(12,000)	(12,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(313)
Redemption of membership interest related to the New England Black Wolves franchise		75
Total capital at end of period	145,961	229,901
Retained Earnings
Statements of Changes in Capital
Total capital at beginning of period	137,124	250,707
Cumulative-effect adjustment for the adoption of ASC 606 Revenue from Contracts with Customers			(41,575)
Net income	9,394	10,622
Distributions to Mohegan Tribe	(12,000)	(12,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(313)
Redemption of membership interest related to the New England Black Wolves franchise		(4,499)
Total capital at end of period	134,205	203,255
Accumulated Other Comprehensive Income (Loss)
Statements of Changes in Capital
Total capital at beginning of period	(6,633)	11,062
Foreign currency translation adjustment	10,886	1,804
Total capital at end of period	4,253	12,866
Total Capital Attributable to Mohegan Tribal Gaming Authority
Statements of Changes in Capital
Total capital at beginning of period	130,491	261,769
Cumulative-effect adjustment for the adoption of ASC 606 Revenue from Contracts with Customers			$ (41,575)
Net income	9,394	10,622
Foreign currency translation adjustment	10,886	1,804
Distributions to Mohegan Tribe	(12,000)	(12,000)
Distributions to Salishan Company, LLC related to the Cowlitz Project	(313)
Redemption of membership interest related to the New England Black Wolves franchise		(4,499)
Total capital at end of period	138,458	216,121
Non-controlling Interests
Statements of Changes in Capital
Total capital at beginning of period	6,942	9,025
Net income	30	86
Foreign currency translation adjustment	531	95
Distributions to Salishan Company, LLC related to the Cowlitz Project	0
Redemption of membership interest related to the New England Black Wolves franchise		4,574
Total capital at end of period	$ 7,503	$ 13,780