2019-09-30667702017-10-012018-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702017-10-012018-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702018-10-012019-09-30667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:FirstQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:SecondQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:ThirdQuarterMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:YearEndMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember667702018-10-012019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember667702019-09-30667702019-09-30tse-ed-t:AnnualMembertse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ResultMemberiso4217:JPYxbrli:pureiso4217:JPYxbrli:shares