| r0.1 | label_boi_a2/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | N/A | N/A |
| r0.2 | label_boi_a2/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | N/A | N/A |
| r0.3 | label_boi_a2/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | N/A | boi_TI:x2 |
| r0.4 | label_boi_a2/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | N/A | boi_TI:x1 |
| 1.1 | Households (without housing loans)/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 | N/A |
| 1.2 | Households (without housing loans)/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x306 | N/A |
| 1.3 | Households (without housing loans)/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 | boi_TI:x2 |
| 1.4 | Households (without housing loans)/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 | boi_TI:x1 |
| 2.1 | Private banking segment (without housing loans)/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 | N/A |
| 2.2 | Private banking segment (without housing loans)/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x330 | N/A |
| 2.3 | Private banking segment (without housing loans)/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 | boi_TI:x2 |
| 2.4 | Private banking segment (without housing loans)/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 | boi_TI:x1 |
| 3.1 | Loans for housing/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 | N/A |
| 3.2 | Loans for housing/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x307 | N/A |
| 3.3 | Loans for housing/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 | boi_TI:x2 |
| 3.4 | Loans for housing/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 | boi_TI:x1 |
| 4.1 | Micro business segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 | N/A |
| 4.2 | Micro business segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x314 | N/A |
| 4.3 | Micro business segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 | boi_TI:x2 |
| 4.4 | Micro business segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 | boi_TI:x1 |
| 5.1 | Small business segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 | N/A |
| 5.2 | Small business segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x335 | N/A |
| 5.3 | Small business segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 | boi_TI:x2 |
| 5.4 | Small business segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 | boi_TI:x1 |
| 6.1 | Medium business segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 | N/A |
| 6.2 | Medium business segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x310 | N/A |
| 6.3 | Medium business segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 | boi_TI:x2 |
| 6.4 | Medium business segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 | boi_TI:x1 |
| 7.1 | Large business segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 | N/A |
| 7.2 | Large business segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x309 | N/A |
| 7.3 | Large business segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 | boi_TI:x2 |
| 7.4 | Large business segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 | boi_TI:x1 |
| 8.1 | Institutional segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 | N/A |
| 8.2 | Institutional segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x308 | N/A |
| 8.3 | Institutional segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 | boi_TI:x2 |
| 8.4 | Institutional segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 | boi_TI:x1 |
| 9.1 | Financial management segment/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x304 | N/A |
| 9.2 | Financial management segment/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x304 | N/A |
| 9.3 | Financial management segment/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x304 | boi_TI:x2 |
| 9.4 | Financial management segment/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x304 | boi_TI:x1 |
| 10.1 | Other segmen/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x363 | N/A |
| 10.2 | Other segmen/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x363 | N/A |
| 10.3 | Other segmen/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x363 | boi_TI:x2 |
| 10.4 | Other segmen/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x363 | boi_TI:x1 |
| 11.1 | Activity in Israel/Credit | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x16 | N/A |
| 11.2 | Activity in Israel/Demand and overdraft facilities | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 11.3 | Activity in Israel/debts In arrears of 90 days or more | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x16 | boi_TI:x2 |
| 11.4 | Activity in Israel/debts In arrears of 30 to 89 days | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_GA:x1 | boi_MC:x8 | boi_SE:x16 | boi_TI:x1 |