| r0.1 | label_boi_a2/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.2 | label_boi_a2/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.3 | label_boi_a2/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.4 | label_boi_a2/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.5 | label_boi_a2/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.6 | label_boi_a2/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | N/A |
| r0.7 | label_boi_a2/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | N/A |
| 1.1 | Households (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.2 | Households (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.3 | Households (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.4 | Households (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.5 | Households (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.6 | Households (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 1.7 | Households (without housing loans)/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x306 |
| 2.1 | Private banking segment (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.2 | Private banking segment (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.3 | Private banking segment (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.4 | Private banking segment (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.5 | Private banking segment (without housing loans)/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.6 | Private banking segment (without housing loans)/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 2.7 | Private banking segment (without housing loans)/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x38 | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x330 |
| 3.1 | Loans for housing/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.2 | Loans for housing/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.3 | Loans for housing/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.4 | Loans for housing/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.5 | Loans for housing/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.6 | Loans for housing/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 3.7 | Loans for housing/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x307 |
| 4.1 | Micro business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.2 | Micro business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.3 | Micro business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.4 | Micro business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.5 | Micro business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.6 | Micro business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 4.7 | Micro business segment/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x314 |
| 5.1 | Small business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.2 | Small business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.3 | Small business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.4 | Small business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.5 | Small business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.6 | Small business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 5.7 | Small business segment/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x335 |
| 6.1 | Medium business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.2 | Medium business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.3 | Medium business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.4 | Medium business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.5 | Medium business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.6 | Medium business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 6.7 | Medium business segment/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x310 |
| 7.1 | Large business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.2 | Large business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.3 | Large business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.4 | Large business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.5 | Large business segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.6 | Large business segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 7.7 | Large business segment/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x309 |
| 8.1 | Institutional segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.2 | Institutional segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.3 | Institutional segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.4 | Institutional segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.5 | Institutional segment/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.6 | Institutional segment/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 8.7 | Institutional segment/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x308 |
| 9.1 | Activity in Israel/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.2 | Activity in Israel/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x5 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.3 | Activity in Israel/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.4 | Activity in Israel/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x6 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.5 | Activity in Israel/Fixed rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x23 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.6 | Activity in Israel/Floating rate | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_CU:x24 | boi_CU:x15 | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |
| 9.7 | Activity in Israel/Total | boi_met:mi1330 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | boi_GA:x1 | boi_MC:x8 | boi_SE:x362 |