Document and Entity Information In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2011
Entity Registrant Name	MOHEGAN TRIBAL GAMING AUTHORITY
Entity Central Index Key	0001005276
Current Fiscal Year End Date	--09-30
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding	0