2019-02-28960102017-03-012018-02-28tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember960102017-03-012018-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember960102018-03-012019-02-28960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember960102018-03-012019-02-28tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember960102018-03-012019-02-28tse-ed-t:NonConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember960102019-02-28iso4217:JPYxbrli:pureiso4217:JPYxbrli:shares