 | jppfs_cor:PropertyPlantAndEquipmentAbstract | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssetsAbstract | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentAssetsRailwayBusinessAbstractRWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRelatedAbstractRWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsAffiliatedAbstractRWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherNoncurrentAssetsAffiliatedRWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressAbstractRWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssets | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:PropertyPlantAndEquipmentAbstract | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:IntangibleAssetsAbstract | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:OtherNoncurrentAssetsAffiliatedRWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRailwayBusinessAbstractRWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsRelatedAbstractRWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssetsAffiliatedAbstractRWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ConstructionInProgressAbstractRWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentAssets | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | 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: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: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:PropertyPlantAndEquipmentAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:IntangibleAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:InvestmentsAndOtherAssetsAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentAssets | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |