 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentAssetsTelecommunicationsBusinessELC | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentAssetsIncidentalBusinessNCAELC | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsTelecommunicationsBusinessELC | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsIncidentalBusinessNCAELC | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsHighwayBusinessNCAHWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRelatedHWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsAffiliatedHWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherNoncurrentAssetsHWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherAssetsMED | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRailwayRWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRelatedRWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsAffiliatedRWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherNoncurrentAssetsAffiliatedRWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressRWY | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_QuarterlyBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualConsolidatedBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:IntangibleAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | summation-item | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_SemiAnnualBalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherAssetsMED | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipment | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:IntangibleAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherAssetsMED | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NonOperatingFacilitiesELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ConstructionInProgressELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NuclearFuelNCAELE | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:ElectricUtilityPlantAndEquipmentAssetsELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IncidentalBusinessFacilitiesELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NonOperatingFacilitiesELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherNoncurrentAssetsELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ConstructionInProgressELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NuclearFuelNCAELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PlantAndEquipmentAndIntangibleAssetsELE | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ele_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipment | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_liq_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_liq_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_liq_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipment | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_med_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_med_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherAssetsMED | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_med_BalanceSheet-ListOfAccounts |