E0451095130電源開発株式会社Electric Power Development Co., Ltd.企業内容等の開示に関する内閣府令第三号様式Japan GAAPtruectecte2016-04-012017-03-31FY2017-03-312015-04-012016-03-312016-03-312trueS100AMEJtruefalseE04510-0002019-02-28E04510-0002012-04-012013-03-31E04510-0002013-04-012014-03-31E04510-0002014-04-012015-03-31E04510-0002015-04-012016-03-31E04510-0002016-04-012017-03-31E04510-0002013-03-31E04510-0002014-03-31E04510-0002015-03-31E04510-0002016-03-31E04510-0002017-03-31E04510-0002012-04-012013-03-31jppfs_cor:NonConsolidatedMemberE04510-0002013-04-012014-03-31jppfs_cor:NonConsolidatedMemberE04510-0002014-04-012015-03-31jppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:NonConsolidatedMemberE04510-0002013-03-31jppfs_cor:NonConsolidatedMemberE04510-0002014-03-31jppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jpcrp_cor:No1MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No2MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No3MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No4MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No5MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No6MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No7MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No8MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No9MajorShareholdersMemberE04510-0002017-03-31jpcrp_cor:No10MajorShareholdersMemberE04510-0002015-03-31jppfs_cor:CapitalStockMemberE04510-0002016-03-31jppfs_cor:CapitalStockMemberE04510-0002016-03-31jppfs_cor:CapitalSurplusMemberE04510-0002015-03-31jppfs_cor:CapitalSurplusMemberE04510-0002016-03-31jppfs_cor:RetainedEarningsMemberE04510-0002015-03-31jppfs_cor:RetainedEarningsMemberE04510-0002016-03-31jppfs_cor:TreasuryStockMemberE04510-0002015-03-31jppfs_cor:TreasuryStockMemberE04510-0002016-03-31jppfs_cor:ShareholdersEquityMemberE04510-0002015-03-31jppfs_cor:ShareholdersEquityMemberE04510-0002016-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberE04510-0002015-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberE04510-0002015-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberE04510-0002016-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberE04510-0002015-03-31jppfs_cor:ForeignCurrencyTranslationAdjustmentMemberE04510-0002016-03-31jppfs_cor:ForeignCurrencyTranslationAdjustmentMemberE04510-0002015-03-31jppfs_cor:RemeasurementsOfDefinedBenefitPlansMemberE04510-0002016-03-31jppfs_cor:RemeasurementsOfDefinedBenefitPlansMemberE04510-0002015-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberE04510-0002016-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberE04510-0002015-03-31jppfs_cor:NonControllingInterestsMemberE04510-0002016-03-31jppfs_cor:NonControllingInterestsMemberE04510-0002016-04-012017-03-31jppfs_cor:RetainedEarningsMemberE04510-0002015-04-012016-03-31jppfs_cor:RetainedEarningsMemberE04510-0002016-04-012017-03-31jppfs_cor:ShareholdersEquityMemberE04510-0002015-04-012016-03-31jppfs_cor:ShareholdersEquityMemberE04510-0002015-04-012016-03-31jppfs_cor:TreasuryStockMemberE04510-0002016-04-012017-03-31jppfs_cor:TreasuryStockMemberE04510-0002016-04-012017-03-31jppfs_cor:CapitalSurplusMemberE04510-0002015-04-012016-03-31jppfs_cor:CapitalSurplusMemberE04510-0002016-04-012017-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberE04510-0002015-04-012016-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberE04510-0002016-04-012017-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberE04510-0002015-04-012016-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberE04510-0002015-04-012016-03-31jppfs_cor:ForeignCurrencyTranslationAdjustmentMemberE04510-0002016-04-012017-03-31jppfs_cor:ForeignCurrencyTranslationAdjustmentMemberE04510-0002016-04-012017-03-31jppfs_cor:RemeasurementsOfDefinedBenefitPlansMemberE04510-0002015-04-012016-03-31jppfs_cor:RemeasurementsOfDefinedBenefitPlansMemberE04510-0002016-04-012017-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberE04510-0002015-04-012016-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberE04510-0002015-04-012016-03-31jppfs_cor:NonControllingInterestsMemberE04510-0002016-04-012017-03-31jppfs_cor:NonControllingInterestsMemberE04510-0002016-04-012017-03-31jppfs_cor:CapitalStockMemberE04510-0002015-04-012016-03-31jppfs_cor:CapitalStockMemberE04510-0002017-03-31jppfs_cor:CapitalStockMemberE04510-0002017-03-31jppfs_cor:CapitalSurplusMemberE04510-0002017-03-31jppfs_cor:RetainedEarningsMemberE04510-0002017-03-31jppfs_cor:TreasuryStockMemberE04510-0002017-03-31jppfs_cor:ShareholdersEquityMemberE04510-0002017-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberE04510-0002017-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberE04510-0002017-03-31jppfs_cor:ForeignCurrencyTranslationAdjustmentMemberE04510-0002017-03-31jppfs_cor:RemeasurementsOfDefinedBenefitPlansMemberE04510-0002017-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberE04510-0002017-03-31jppfs_cor:NonControllingInterestsMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:ElectricPowerReportableSegmentsMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:ElectricPowerReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:ElectricPowerRelatedReportableSegmentsMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:ElectricPowerRelatedReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:OverseasReportableSegmentsMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:OverseasReportableSegmentsMemberE04510-0002016-04-012017-03-31jpcrp_cor:OtherReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp_cor:OtherReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp_cor:ReportableSegmentsMemberE04510-0002016-04-012017-03-31jpcrp_cor:ReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp_cor:ReconcilingItemsMemberE04510-0002016-04-012017-03-31jpcrp_cor:ReconcilingItemsMemberE04510-0002016-03-31jpcrp030000-asr_E04510-000:ElectricPowerReportableSegmentsMemberE04510-0002017-03-31jpcrp030000-asr_E04510-000:ElectricPowerReportableSegmentsMemberE04510-0002017-03-31jpcrp030000-asr_E04510-000:ElectricPowerRelatedReportableSegmentsMemberE04510-0002016-03-31jpcrp030000-asr_E04510-000:ElectricPowerRelatedReportableSegmentsMemberE04510-0002017-03-31jpcrp030000-asr_E04510-000:OverseasReportableSegmentsMemberE04510-0002016-03-31jpcrp030000-asr_E04510-000:OverseasReportableSegmentsMemberE04510-0002016-03-31jpcrp_cor:OtherReportableSegmentsMemberE04510-0002017-03-31jpcrp_cor:OtherReportableSegmentsMemberE04510-0002017-03-31jpcrp_cor:ReportableSegmentsMemberE04510-0002016-03-31jpcrp_cor:ReportableSegmentsMemberE04510-0002016-03-31jpcrp_cor:ReconcilingItemsMemberE04510-0002017-03-31jpcrp_cor:ReconcilingItemsMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:ElectricityReportableSegmentsMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:ElectricityReportableSegmentsMemberE04510-0002016-03-31jppfs_cor:CapitalStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:CapitalStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:LegalCapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:LegalCapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:CapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:CapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:LegalRetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:LegalRetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jpcrp030000-asr_E04510-000:ReserveForSpecialDisasterMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jpcrp030000-asr_E04510-000:ReserveForSpecialDisasterMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jpcrp030000-asr_E04510-000:ExchangeFluctuationPreparationReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jpcrp030000-asr_E04510-000:ExchangeFluctuationPreparationReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:GeneralReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:GeneralReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:RetainedEarningsBroughtForwardMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:RetainedEarningsBroughtForwardMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:RetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:RetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:TreasuryStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:TreasuryStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:ShareholdersEquityMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:ShareholdersEquityMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:RetainedEarningsBroughtForwardMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:RetainedEarningsBroughtForwardMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:RetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:RetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:ShareholdersEquityMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:ShareholdersEquityMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:ReserveForSpecialDisasterMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:ReserveForSpecialDisasterMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:GeneralReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:GeneralReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:TreasuryStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:TreasuryStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:CapitalStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:CapitalStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:LegalCapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:LegalCapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:CapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:CapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jppfs_cor:LegalRetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jppfs_cor:LegalRetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002015-04-012016-03-31jpcrp030000-asr_E04510-000:ExchangeFluctuationPreparationReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002016-04-012017-03-31jpcrp030000-asr_E04510-000:ExchangeFluctuationPreparationReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:CapitalStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:LegalCapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:CapitalSurplusMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:LegalRetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jpcrp030000-asr_E04510-000:ReserveForSpecialDisasterMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jpcrp030000-asr_E04510-000:ExchangeFluctuationPreparationReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:GeneralReserveMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:RetainedEarningsBroughtForwardMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:RetainedEarningsMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:TreasuryStockMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:ShareholdersEquityMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:ValuationDifferenceOnAvailableForSaleSecuritiesMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:DeferredGainsOrLossesOnHedgesMemberjppfs_cor:NonConsolidatedMemberE04510-0002017-03-31jppfs_cor:ValuationAndTranslationAdjustmentsMemberjppfs_cor:NonConsolidatedMemberiso4217:JPYiso4217:JPYxbrli:sharesxbrli:purexbrli:shares