| r0.c0 | Interest rate on new loans DAEB/First forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r0.c1 | Interest rate on new loans DAEB/Second forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r0.c2 | Interest rate on new loans DAEB/Third forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r0.c3 | Interest rate on new loans DAEB/Fourth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r0.c4 | Interest rate on new loans DAEB/Fifth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r1.c0 | Interest rate on new loans non-DAEB/First forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r1.c1 | Interest rate on new loans non-DAEB/Second forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r1.c2 | Interest rate on new loans non-DAEB/Third forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r1.c3 | Interest rate on new loans non-DAEB/Fourth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r1.c4 | Interest rate on new loans non-DAEB/Fifth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaeb | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r2.c0 | Interest rate on new loans non-DAEB compound/First forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaebCompound | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r2.c1 | Interest rate on new loans non-DAEB compound/Second forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaebCompound | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r2.c2 | Interest rate on new loans non-DAEB compound/Third forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaebCompound | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r2.c3 | Interest rate on new loans non-DAEB compound/Fourth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaebCompound | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r2.c4 | Interest rate on new loans non-DAEB compound/Fifth forecast year | bzk-ww-i:InterestRateOnNewLoansPercentageDaebNonDaebCompound | bzk-ww-types:percentMax1ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |