| r0.1 | label_boi_a2/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.2 | label_boi_a2/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.3 | label_boi_a2/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.4 | label_boi_a2/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.5 | label_boi_a2/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.6 | label_boi_a2/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.7 | label_boi_a2/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.8 | label_boi_a2/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.9 | label_boi_a2/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.10 | label_boi_a2/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | N/A |
| r0.11 | label_boi_a2/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | N/A |
| 1.1 | Sovereigns, central banks thereof, and national monetary authority/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.2 | Sovereigns, central banks thereof, and national monetary authority/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.3 | Sovereigns, central banks thereof, and national monetary authority/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.4 | Sovereigns, central banks thereof, and national monetary authority/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.5 | Sovereigns, central banks thereof, and national monetary authority/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.6 | Sovereigns, central banks thereof, and national monetary authority/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.7 | Sovereigns, central banks thereof, and national monetary authority/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.8 | Sovereigns, central banks thereof, and national monetary authority/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.9 | Sovereigns, central banks thereof, and national monetary authority/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.10 | Sovereigns, central banks thereof, and national monetary authority/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 1.11 | Sovereigns, central banks thereof, and national monetary authority/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x1 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.1 | Public-sector entities (PSE) other than the central government/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.2 | Public-sector entities (PSE) other than the central government/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.3 | Public-sector entities (PSE) other than the central government/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.4 | Public-sector entities (PSE) other than the central government/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.5 | Public-sector entities (PSE) other than the central government/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.6 | Public-sector entities (PSE) other than the central government/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.7 | Public-sector entities (PSE) other than the central government/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.8 | Public-sector entities (PSE) other than the central government/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.9 | Public-sector entities (PSE) other than the central government/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.10 | Public-sector entities (PSE) other than the central government/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 2.11 | Public-sector entities (PSE) other than the central government/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x2 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.1 | Banks (including multilateral development banks (MDB))/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.2 | Banks (including multilateral development banks (MDB))/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.3 | Banks (including multilateral development banks (MDB))/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.4 | Banks (including multilateral development banks (MDB))/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.5 | Banks (including multilateral development banks (MDB))/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.6 | Banks (including multilateral development banks (MDB))/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.7 | Banks (including multilateral development banks (MDB))/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.8 | Banks (including multilateral development banks (MDB))/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.9 | Banks (including multilateral development banks (MDB))/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.10 | Banks (including multilateral development banks (MDB))/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 3.11 | Banks (including multilateral development banks (MDB))/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x3 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.1 | Securities companies/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.2 | Securities companies/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.3 | Securities companies/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.4 | Securities companies/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.5 | Securities companies/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.6 | Securities companies/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.7 | Securities companies/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.8 | Securities companies/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.9 | Securities companies/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.10 | Securities companies/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 4.11 | Securities companies/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x4 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.1 | Corporations/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.2 | Corporations/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.3 | Corporations/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.4 | Corporations/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.5 | Corporations/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.6 | Corporations/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.7 | Corporations/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.8 | Corporations/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.9 | Corporations/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.10 | Corporations/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 5.11 | Corporations/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x5 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.1 | Retail exposures to individuals/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.2 | Retail exposures to individuals/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.3 | Retail exposures to individuals/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.4 | Retail exposures to individuals/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.5 | Retail exposures to individuals/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.6 | Retail exposures to individuals/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.7 | Retail exposures to individuals/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.8 | Retail exposures to individuals/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.9 | Retail exposures to individuals/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.10 | Retail exposures to individuals/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 6.11 | Retail exposures to individuals/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x7 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.1 | Loans to small businesses/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.2 | Loans to small businesses/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.3 | Loans to small businesses/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.4 | Loans to small businesses/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.5 | Loans to small businesses/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.6 | Loans to small businesses/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.7 | Loans to small businesses/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.8 | Loans to small businesses/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.9 | Loans to small businesses/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.10 | Loans to small businesses/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 7.11 | Loans to small businesses/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x8 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.1 | Secured by a residential property/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.2 | Secured by a residential property/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.3 | Secured by a residential property/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.4 | Secured by a residential property/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.5 | Secured by a residential property/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.6 | Secured by a residential property/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.7 | Secured by a residential property/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.8 | Secured by a residential property/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.9 | Secured by a residential property/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.10 | Secured by a residential property/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 8.11 | Secured by a residential property/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x9 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.1 | Secured by commercial real estate/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.2 | Secured by commercial real estate/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.3 | Secured by commercial real estate/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.4 | Secured by commercial real estate/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.5 | Secured by commercial real estate/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.6 | Secured by commercial real estate/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.7 | Secured by commercial real estate/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.8 | Secured by commercial real estate/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.9 | Secured by commercial real estate/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.10 | Secured by commercial real estate/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 9.11 | Secured by commercial real estate/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x6 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 10.1 | Loans in arrears/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.2 | Loans in arrears/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.3 | Loans in arrears/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.4 | Loans in arrears/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.5 | Loans in arrears/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.6 | Loans in arrears/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.7 | Loans in arrears/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.8 | Loans in arrears/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.9 | Loans in arrears/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.10 | Loans in arrears/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 10.11 | Loans in arrears/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x208 |
| 11.1 | Other assets/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.2 | Other assets/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.3 | Other assets/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.4 | Other assets/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.5 | Other assets/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.6 | Other assets/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.7 | Other assets/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.8 | Other assets/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.9 | Other assets/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.10 | Other assets/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 11.11 | Other assets/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.1 | Of which: in respect of shares/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.2 | Of which: in respect of shares/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.3 | Of which: in respect of shares/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.4 | Of which: in respect of shares/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.5 | Of which: in respect of shares/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.6 | Of which: in respect of shares/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.7 | Of which: in respect of shares/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.8 | Of which: in respect of shares/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.9 | Of which: in respect of shares/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.10 | Of which: in respect of shares/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 12.11 | Of which: in respect of shares/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | boi_EC:x11 | boi_MC:x980 | N/A | boi_RP:x24 | boi_RT:x61 | boi_ST:x207 |
| 13.1 | Total/0 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x5 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.2 | Total/0.1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x6 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.3 | Total/0.2 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x7 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.4 | Total/0.35 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x8 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.5 | Total/0.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x9 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.6 | Total/0.6 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x75 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.7 | Total/0.75 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x10 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.8 | Total/1 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x11 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.9 | Total/1.5 | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x12 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.10 | Total/Other | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | boi_PI:x80 | boi_RP:x24 | boi_RT:x61 | N/A |
| 13.11 | Total/amount of credit exposures (after CCF and after CRM) | boi_met:mi29 | xbrli:monetaryItemType | instant | boi_BC:x16 | boi_CS:x2 | N/A | boi_MC:x249 | N/A | boi_RP:x24 | boi_RT:x61 | N/A |