| r0.c0 | Net trade receivables/Current | rj-i:TradeReceivablesNet | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r0.c1 | Net trade receivables/Previous | rj-i:TradeReceivablesNet | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r1.c0 | Receivables VO from the Ministry of OC&W/Current | rj-i:ReceivablesFromMinistryOCW | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c1 | Receivables VO from the Ministry of OC&W/Previous | rj-i:ReceivablesFromMinistryOCW | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r2.c0 | Current receivables from OCW and EZ/Current | ocw-i:ReceivablesOCWAndEZCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c1 | Current receivables from OCW and EZ/Previous | ocw-i:ReceivablesOCWAndEZCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r3.c0 | Current receivables from local government and common regulations/Current | ocw-i:ReceivablesLocalGovernmentCommonRegulationsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r3.c1 | Current receivables from local government and common regulations/Previous | ocw-i:ReceivablesLocalGovernmentCommonRegulationsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r4.c0 | Current receivables from group companies/Current | jenv-bw2-i:ReceivablesGroupCompaniesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r4.c1 | Current receivables from group companies/Previous | jenv-bw2-i:ReceivablesGroupCompaniesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r5.c0 | Current receivables from other affiliated companies/Current | jenv-bw2-i:ReceivablesOtherAffiliatedCompaniesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r5.c1 | Current receivables from other affiliated companies/Previous | jenv-bw2-i:ReceivablesOtherAffiliatedCompaniesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r6.c0 | Current receivables from parents, students and course participants/Current | ocw-i:ReceivablesParentsStudentsAndCourseParticipantsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r6.c1 | Current receivables from parents, students and course participants/Previous | ocw-i:ReceivablesParentsStudentsAndCourseParticipantsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r7.c0 | Current receivables from other government institutions/Current | ocw-i:ReceivablesGovernmentOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r7.c1 | Current receivables from other government institutions/Previous | ocw-i:ReceivablesGovernmentOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r8.c0 | Current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Current | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r8.c1 | Current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Previous | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r9.c0 | Pension receivable other receivables/Current | rj-i:PensionReceivablesReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r9.c1 | Pension receivable other receivables/Previous | rj-i:PensionReceivablesReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r10.c0 | Other receivables other/Current | jenv-bw2-i:OtherReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r10.c1 | Other receivables other/Previous | jenv-bw2-i:OtherReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r11.c0 | Current receivables from loans and advances to participants or registered shareholders/Current | jenv-bw2-i:ReceivablesFromLoansAndAdvancesToParticipantsOrRegisteredShareholdersCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r11.c1 | Current receivables from loans and advances to participants or registered shareholders/Previous | jenv-bw2-i:ReceivablesFromLoansAndAdvancesToParticipantsOrRegisteredShareholdersCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r12.c0 | Loans, advances and guarantees on behalf of managing directors/Current | rj-i:LoansAdvancesGuaranteesOnBehalfOfManagingDirectorsFormerManagingDirectors | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r12.c1 | Loans, advances and guarantees on behalf of managing directors/Previous | rj-i:LoansAdvancesGuaranteesOnBehalfOfManagingDirectorsFormerManagingDirectors | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r13.c0 | Loans, advances and guarantees on behalf of supervisory directors/Current | rj-i:LoansAdvancesGuaranteesOnBehalfOfSupervisoryDirectorsFormerSupervisoryDirectors | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r13.c1 | Loans, advances and guarantees on behalf of supervisory directors/Previous | rj-i:LoansAdvancesGuaranteesOnBehalfOfSupervisoryDirectorsFormerSupervisoryDirectors | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r14.c0 | Current other receivables/Current | jenv-bw2-i:ReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r14.c1 | Current other receivables/Previous | jenv-bw2-i:ReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r15.c0 | Current deferred tax assets/Current | rj-i:DeferredTaxAssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r15.c1 | Current deferred tax assets/Previous | rj-i:DeferredTaxAssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r16.c0 | Called-up contributions for issued share capital/Current | jenv-bw2-i:CalledUpShareCapital | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r16.c1 | Called-up contributions for issued share capital/Previous | jenv-bw2-i:CalledUpShareCapital | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r17.c0 | Tax receivables/Current | rj-i:TaxReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r17.c1 | Tax receivables/Previous | rj-i:TaxReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r18.c0 | Prepayments/Current | ocw-i:AdvancesPaidPrepayments | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r18.c1 | Prepayments/Previous | ocw-i:AdvancesPaidPrepayments | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r19.c0 | Interest receivable/Current | ocw-i:InterestReceivable | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r19.c1 | Interest receivable/Previous | ocw-i:InterestReceivable | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r20.c0 | Pension receivables accruals and receivables/Current | rj-i:PensionReceivablesReceivablesAccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r20.c1 | Pension receivables accruals and receivables/Previous | rj-i:PensionReceivablesReceivablesAccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r21.c0 | Other accrued income/Current | jenv-bw2-i:AccruedIncomeOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r21.c1 | Other accrued income/Previous | jenv-bw2-i:AccruedIncomeOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r22.c0 | Prepayments and accrued income/Current | jenv-bw2-i:AccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r22.c1 | Prepayments and accrued income/Previous | jenv-bw2-i:AccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r23.c0 | Receivables/Current | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r23.c1 | Receivables/Previous | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |