 | jppfs_cor:BondsPayable | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:LeaseObligationsNCL | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NetDefinedBenefitLiability | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:RoadBuildingBondsPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:OtherBondsPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:LongTermLoansPayableToRoadBuildingNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:OtherLongTermLoansPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:NegativeGoodwill | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:OtherNCL | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentLiabilities | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:RoadBuildingBondsPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherBondsPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:LongTermLoansPayableToRoadBuildingNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherLongTermLoansPayableNCLHWY | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:DeferredTaxLiabilities | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:GuaranteeDepositsReceivedNCL | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ProvisionForRetirementBenefits | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ProvisionForDirectorsRetirementBenefits | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NegativeGoodwill | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherNCL | parent-child | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
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 | jppfs_cor:LeaseObligationsNCL | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NetDefinedBenefitLiability | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:OtherBondsPayableNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:OtherLongTermLoansPayableNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
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 | jppfs_cor:OtherNCL | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:NoncurrentLiabilities | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_ConsolidatedBalanceSheet |
 | jppfs_cor:RoadBuildingBondsPayableNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherBondsPayableNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:LongTermLoansPayableToRoadBuildingNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherLongTermLoansPayableNCLHWY | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
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 | jppfs_cor:GuaranteeDepositsReceivedNCL | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ProvisionForRetirementBenefits | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:ProvisionForDirectorsRetirementBenefits | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NegativeGoodwill | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:OtherNCL | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
 | jppfs_cor:NoncurrentLiabilities | domain-member | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_std_BalanceSheet |
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 | jppfs_cor:OtherBondsPayableNCLHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:LongTermLoansPayableToRoadBuildingNCLHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherLongTermLoansPayableNCLHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:DeferredTaxLiabilities | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:GuaranteeDepositsReceivedNCL | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ProvisionForRetirementBenefits | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ProvisionForDirectorsRetirementBenefits | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NegativeGoodwill | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ProvisionForETCMileageServiceNCLHWY | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherNCL | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NoncurrentLiabilities | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_hwy_BalanceSheet-ListOfAccounts |
 | jppfs_cor:BondsPayableAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:LongTermLoansPayableAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:ProvisionNCLAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NetDefinedBenefitLiability | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:NegativeGoodwill | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:LeaseObligationsNCL | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:AssetRetirementObligationsNCL | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:LiabilitiesRelatedToRightToOperatePublicFacilitiesNCL | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
 | jppfs_cor:OtherLiabilitiesNotCurrentLiabilitiesNCLAbstract | general-special | http://disclosure.edinet-fsa.go.jp/role/jppfs/rol_cai_BalanceSheet-ListOfAccounts |
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