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ORGANIZATION (Details)
12 Months Ended 1 Months Ended
Sep. 30, 2014
acre
Sep. 30, 2012
Oct. 31, 2012
Mohegan Tribe      
Entity Information [Line Items]      
Size of tribe reservation 544mtga_SizeOfTribeReservation
/ dei_LegalEntityAxis
= mtga_MoheganTribeOfIndiansOfConnecticutMember
   
Mohegan Tribe | Salishan-Mohegan      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 10.85%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganTribeOfIndiansOfConnecticutMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_SalishanMoheganLlcMember
   
Mohegan Tribal Gaming Authority      
Entity Information [Line Items]      
Size of gaming and entertainment complex 185mtga_SizeOfGamingAndEntertainmentComplex
/ dei_LegalEntityAxis
= mtga_MoheganTribalGamingAuthorityMember
   
Number of members on management board 9mtga_NumberofMembersonManagementBoardIncludingTribalCouncilMembers
/ dei_LegalEntityAxis
= mtga_MoheganTribalGamingAuthorityMember
   
Mohegan Tribal Gaming Authority | Downs Racing, Backside, Mill Creek Land, and Northeast Concessions      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 99.99%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganTribalGamingAuthorityMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_DownsRacingLPBacksideLPMillCreekLandLPAndNortheastConcessionsLPMember
   
Mohegan Basketball Club | WNBA      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 4.20%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganBasketballClubLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_WnbaLlcMember
   
Mohegan Commercial Ventures-PA | Downs Racing, Backside, Mill Creek Land, and Northeast Concessions      
Entity Information [Line Items]      
General partnership interest percentage 0.01%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganCommercialVenturesPaLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_DownsRacingLPBacksideLPMillCreekLandLPAndNortheastConcessionsLPMember
   
Downs Racing      
Entity Information [Line Items]      
Size of site on which gaming and entertainment complex is located 400mtga_SizeofSiteonwhichGamingandEntertainmentComplexisLocated
/ dei_LegalEntityAxis
= mtga_DownsRacingLPMember
   
Mohegan Ventures-Northwest | Salishan-Mohegan      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 49.15%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganVenturesNorthwestLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_SalishanMoheganLlcMember
   
Salishan-Mohegan | Salishan-Mohegan Two      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_SalishanMoheganLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_SalishanMoheganTwoMember
   
Salishan-Mohegan | Interchange Development Group      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_SalishanMoheganLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_InterchangeDevelopmentGroupLLCMember
   
Mohegan Ventures Wisconsin | Wisconsin Tribal Gaming      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganVenturesWisconsinLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_WisconsinTribalGamingLlcMember
   
MTGA Gaming | Mohegan Gaming & Hospitality      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MtgaGamingLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganGamingHospitalityLlcMember
   
Mohegan Gaming & Hospitality | Mohegan Resorts      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingHospitalityLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganResortsLlcMember
   
Mohegan Resorts | Mohegan Resorts Mass      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganResortsLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganResortsMassLlcMember
   
Mohegan Resorts | Mohegan New York Entities      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganResortsLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganNewYorkEntitiesMember
   
Mohegan Gaming Advisors | Mohegan New Jersey Entities      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingAdvisorsMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganNewJerseyEntitiesMember
   
Mohegan Gaming Advisors | Resorts Atlantic City      
Entity Information [Line Items]      
Membership or limited partnership interest percentage   10.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingAdvisorsMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_ResortsCasinoHotelInAtlanticCityNewJerseyMember
 
Mohegan Gaming Advisors | MGA Holding MA      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingAdvisorsMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MgaHoldingMaLlcMember
   
Mohegan Gaming Advisors | Mohegan PA Entities      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingAdvisorsMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganPaEntitiesMember
   
Mohegan Gaming Advisors | MGA Holdings FL      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganGamingAdvisorsMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MGAHoldingsFLLLCMember
   
Mohegan Holding NJ | Resorts Atlantic City      
Entity Information [Line Items]      
Membership or limited partnership interest percentage     10.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MoheganHoldingNJLLCMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_ResortsCasinoHotelInAtlanticCityNewJerseyMember
MGA Holding MA | MGA Palmer Partners      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MgaHoldingMaLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MgaPalmerPartnersLlcMember
   
MGA Palmer Partners | Mohegan Sun Massachusetts      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MgaPalmerPartnersLlcMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MoheganSunMassachusettsLlcMember
   
MGA Holdings FL | MGA Miami      
Entity Information [Line Items]      
Membership or limited partnership interest percentage 100.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
/ dei_LegalEntityAxis
= mtga_MGAHoldingsFLLLCMember
/ us-gaap_OtherOwnershipInterestsByNameAxis
= mtga_MGAMiamiLLCMember