| r0.0010 | boe_a2520.root/Current period: Intragroup transactions | | | | N/A | N/A | N/A | N/A | N/A | boe_eba_RP:x6004 |
| 0020.0010 | Other comprehensive income/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | N/A | eba_BA:x1 | N/A | eba_MC:x281 | N/A | boe_eba_RP:x6004 |
| 0030.0010 | Items that will not to be reclassified to profit or loss/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | N/A | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x2 | boe_eba_RP:x6004 |
| 0070.0010 | Non-current assets and disposal groups held for sale/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x13 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x2 | boe_eba_RP:x6004 |
| 0080.0010 | Share of other recognised income and expense of entities accounted for using the equity method/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x41 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x2 | boe_eba_RP:x6004 |
| 0081.0010 | Fair value changes of equity instruments measured at fair value through other comprehensive income/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x750 | eba_BA:x1 | eba_MC:x130 | eba_MC:x182 | eba_BT:x2 | boe_eba_RP:x6004 |
| 0086.0010 | Fair value changes of financial liabilities at fair value through profit or loss that is attributable to changes in their credit risk/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | N/A | eba_BA:x1 | eba_MC:x130 | eba_MC:x182 | eba_BT:x2 | boe_eba_RP:x6004 |
| 0100.0010 | Items that may be reclassified to profit or loss/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | N/A | eba_BA:x1 | N/A | eba_MC:x281 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0241.0010 | Debt instruments at fair value through other comprehensive income/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x750 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0251.0010 | Valuation gains or (-) losses taken to equity/Current period: Intragroup transactions | eba_met:md252 | xbrli:monetaryItemType | instant | eba_PL:x750 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0261.0010 | Transferred to profit or loss/Current period: Intragroup transactions | eba_met:md240 | xbrli:monetaryItemType | instant | eba_PL:x750 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0270.0010 | Other reclassifications/Current period: Intragroup transactions | eba_met:md201 | xbrli:monetaryItemType | instant | eba_PL:x750 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0280.0010 | Non-current assets and disposal groups held for sale/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x13 | eba_BA:x1 | N/A | eba_MC:x502 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0290.0010 | Valuation gains or (-) losses taken to equity/Current period: Intragroup transactions | eba_met:md252 | xbrli:monetaryItemType | instant | eba_PL:x13 | eba_BA:x1 | N/A | eba_MC:x502 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0300.0010 | Transferred to profit or loss/Current period: Intragroup transactions | eba_met:md240 | xbrli:monetaryItemType | instant | eba_PL:x13 | eba_BA:x1 | N/A | eba_MC:x502 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0310.0010 | Other reclassifications/Current period: Intragroup transactions | eba_met:md201 | xbrli:monetaryItemType | instant | eba_PL:x13 | eba_BA:x1 | N/A | eba_MC:x502 | eba_BT:x5 | boe_eba_RP:x6004 |
| 0320.0010 | Share of other recognised income and expense of investment in subsidiaries, joint venture and associates/Current period: Intragroup transactions | eba_met:md103 | xbrli:monetaryItemType | instant | eba_PL:x41 | eba_BA:x1 | N/A | eba_MC:x182 | eba_BT:x5 | boe_eba_RP:x6004 |