2018-03-31594502016-04-012016-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember594502016-04-012017-03-31tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ResultMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember594502017-04-012017-09-30tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember594502017-04-012018-03-31594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:ForecastMember594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:LowerMember594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:CurrentMembertse-ed-t:UpperMember594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:ForecastMember594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:LowerMember594502017-04-012018-03-31tse-ed-t:ConsolidatedMembertse-ed-t:PreviousMembertse-ed-t:UpperMember594502018-03-31iso4217:JPYxbrli:pureiso4217:JPYxbrli:shares