| r0.c0 | Sector specific levy independent of results/Current | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | Remediation levy/Current | bzk-ww-i:RemediationLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | WswTaxLevy/Current | bzk-ww-i:WswTaxLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r3.c0 | Other sector-specific charges/Current | bzk-ww-i:OtherSectorSpecificCharges | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |