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 | jppfs_cor:PropertyPlantAndEquipmentAbstract | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_edu_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_edu_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_edu_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsTelecommunicationsBusinessAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_elc_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IncidentalBusinessFacilitiesAbstractELC | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_elc_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_elc_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_elc_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_fnd_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_fnd_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_fnd_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_fnd_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_gas_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_gas_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_gas_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_gas_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsHighwayBusinessNCAAbstractHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsRelatedAbstractHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsAffiliatedAbstractHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherNoncurrentAssetsAbstractHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_inv_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_inv_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_inv_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_inv_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipment | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ivt_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ivt_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ivt_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_ivt_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_lea_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_lea_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_lea_BalanceSheet-ListOfAccounts |
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 | jppfs_cor:NoncurrentAssetsRailwayBusinessAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsRelatedAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsAffiliatedAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ConstructionInProgressAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsRailroadAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsAutomobileAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsRealEstateAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsDevelopmentAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsIncidentalAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsSideLineAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssetsOtherAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherNoncurrentAssetsAbstractRWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_rwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_sec_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_sec_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_sec_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_sec_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_spf_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_spf_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_spf_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_spf_BalanceSheet-ListOfAccounts |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_wat_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_wat_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_wat_BalanceSheet-ListOfAccounts |
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