| r0.1 | label_boi_a2/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | N/A | boi_CS:x2 | N/A | N/A | N/A | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| r1.1 | Deposits of the public:/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | N/A |
| 1.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | N/A |
| 2.1 | On Demand/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | boi_TI:x37 |
| 3.1 | Fixed term/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | boi_TI:x35 |
| 4.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | N/A |
| 5.1 | On Demand/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | boi_TI:x37 |
| 6.1 | Fixed term/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | boi_TI:x35 |
| 7.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x16 | N/A |
| r9.1 | Deposits of the government:/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x11 | N/A |
| 8.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x11 | N/A |
| 9.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x11 | N/A |
| 10.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x11 | N/A |
| r13.1 | Deposits from central banks/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 11.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x20 | N/A |
| 12.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x21 | N/A |
| 13.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x2 | N/A |
| r17.1 | Deposits from banks:/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x5 | N/A |
| 14.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x5 | N/A |
| 15.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x5 | N/A |
| 16.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | boi_SE:x5 | N/A |
| r21.1 | Securities lent or sold under repurchase agreements/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x28 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 17.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x28 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 18.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x28 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 19.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x28 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| r25.1 | Bonds/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x15 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 20.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x15 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 21.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x15 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 22.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x15 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| r29.1 | Other liabilities:/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x472 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 23.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x1 | boi_MC:x472 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 24.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x472 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 25.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x472 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 26.1 | Total interest - bearing assets/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x3 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 27.1 | Non-interest bearing deposits of the public/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x276 | boi_MC:x914 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 28.1 | Payables for non-interest bearing credit cards/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x143 | boi_MC:x914 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 29.1 | Other non-interest bearing liabilities/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x277 | boi_MC:x914 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 30.1 | Total liabilities/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x3 | N/A | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 31.1 | Total capital means/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x3 | boi_CS:x2 | N/A | boi_MC:x2 | N/A | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 32.1 | Total liabilities and capital means/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x4 | boi_CS:x2 | N/A | boi_MC:x4 | N/A | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| r40.1 | Net yield on income - earnings assets/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x2 | N/A | boi_MC:x1 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 34.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x2 | boi_GA:x1 | boi_MC:x1 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 35.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x2 | boi_GA:x2 | boi_MC:x1 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 36.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x2 | N/A | boi_MC:x1 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |
| 37.1 | Total interest-bearing liabilities attributable to activtity outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | boi_GA:x2 | boi_MC:x3 | boi_MC:x962 | boi_MU:x1 | boi_RP:x25 | N/A | N/A |