If `NetResultAfterTax` (at the end of / during the current period) and `ResultAfterTax` (at the end of / during the previous period) are reported `NetResultAfterTax` (at the end of / during the previous period) SHOULD be reported as well. If `NetResultAfterTax` (at the end of / during the previous period) and `ResultAfterTax` (at the end of / during the current period) are reported `NetResultAfterTax` (at the end of / during the current period) SHOULD be reported as well. When `ResultAttributableNoncontrollingInterest` is reported then `NetResultAfterTax` SHOULD exist at least once within the same context. When the reported value of `DocumentRelatesToIndividualEntityOrGroup` is equal to `Geconsolideerd en enkelvoudig` then `NetResultAfterTax` SHOULD exist at least once. When the reported value of `DocumentRelatesToIndividualEntityOrGroup` is equal to `Geconsolideerd en enkelvoudig` then `NetResultAfterTax` SHOULD exist at least once. When the reported value of `DocumentRelatesToIndividualEntityOrGroup` is equal to `Geconsolideerd` then `NetResultAfterTax` SHOULD exist at least once. When the reported value of `DocumentRelatesToIndividualEntityOrGroup` is equal to `Geconsolideerd` then `NetResultAfterTax` SHOULD exist at least once. When the reported value of `IncomeStatementClassificationType` is equal to `Categoriaal` then `GeneralAdministrativeExpenses` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Categoriaal` then `SellingExpenses` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Functioneel` then `ChangesInValueIntangibleAssetsPropertyPlantEquipment` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Functioneel` then `DepreciationPropertyPlantEquipmentAmortisationIntangibleAssets` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Functioneel` then `EmployeeBenefitsExpenses` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Functioneel` then `ImpairmentCurrentAssets` SHOULD NOT be reported. When the reported value of `IncomeStatementClassificationType` is equal to `Functioneel` then `OperatingExpensesOther` SHOULD NOT be reported. `NetResultAfterTax` SHOULD be equal to + `ResultAfterTax` - `ResultAttributableNoncontrollingInterest`. `OperatingResult` SHOULD be equal to + `GrossMargin` - `SumOfExpenses`. `OperatingResult` SHOULD be equal to + `OperatingResultCashFlow`. `ResultAfterTax` SHOULD be equal to + `ResultBeforeTax` - `IncomeTaxExpense` - `IncomeTaxExpenseOther` + `ShareInResultsParticipatingInterests`. `ResultBeforeTax` SHOULD be equal to + `FinancialIncomeExpenses` + `RevaluationReserveRelease` + `OperatingResult`. `SumOfExpenses` SHOULD be equal to + `SellingExpenses` + `GeneralAdministrativeExpenses` + `EmployeeBenefitsExpenses` + `DepreciationPropertyPlantEquipmentAmortisationIntangibleAssets` - `ChangesInValueIntangibleAssetsPropertyPlantEquipment` - `ChangesValueInvestmentProperties` + `ImpairmentCurrentAssets` + `OperatingExpensesOther`.