| r0.1 | label_boi_a2/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | N/A | boi_CS:x2 | N/A | N/A | N/A | N/A | boi_RP:x19 | N/A |
| r0.4 | 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:x3 | 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 | N/A | boi_RP:x19 | boi_SE:x16 |
| r1.4 | 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:x3 | boi_SE:x16 |
| 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 | N/A | boi_RP:x19 | boi_SE:x16 |
| 1.4 | 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:x3 | boi_SE:x16 |
| 2.1 | 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 | N/A | boi_RP:x19 | boi_SE:x16 |
| 2.4 | 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:x3 | boi_SE:x16 |
| 3.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x16 |
| 3.4 | 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:x3 | boi_SE:x16 |
| r5.1 | 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 | N/A | boi_RP:x19 | boi_SE:x11 |
| r5.4 | 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:x3 | boi_SE:x11 |
| 4.1 | 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 | N/A | boi_RP:x19 | boi_SE:x11 |
| 4.4 | 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:x3 | boi_SE:x11 |
| 5.1 | 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 | N/A | boi_RP:x19 | boi_SE:x11 |
| 5.4 | 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:x3 | boi_SE:x11 |
| 6.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x11 |
| 6.4 | 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:x3 | boi_SE:x11 |
| r9.1 | 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 | N/A | boi_RP:x19 | N/A |
| r9.4 | 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:x3 | N/A |
| 7.1 | In Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x20 |
| 7.4 | In Israel/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:x3 | boi_SE:x20 |
| 8.1 | Outside Israel/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x21 |
| 8.4 | Outside Israel/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:x3 | boi_SE:x21 |
| 9.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x2 |
| 9.4 | 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:x3 | boi_SE:x2 |
| r13.1 | 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 | N/A | boi_RP:x19 | boi_SE:x5 |
| r13.4 | 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:x3 | boi_SE:x5 |
| 10.1 | 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 | N/A | boi_RP:x19 | boi_SE:x5 |
| 10.4 | 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:x3 | boi_SE:x5 |
| 11.1 | 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 | N/A | boi_RP:x19 | boi_SE:x5 |
| 11.4 | 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:x3 | boi_SE:x5 |
| 12.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x17 | boi_MC:x962 | N/A | boi_RP:x19 | boi_SE:x5 |
| 12.4 | 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:x3 | boi_SE:x5 |
| r17.1 | Securities borrowered or purchased under resale agreements/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x28 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| r17.4 | Securities borrowered or purchased under resale 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:x3 | N/A |
| 13.1 | 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 | N/A | boi_RP:x19 | N/A |
| 13.4 | 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:x3 | N/A |
| 14.1 | 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 | N/A | boi_RP:x19 | N/A |
| 14.4 | 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:x3 | N/A |
| 15.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x28 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| 15.4 | 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:x3 | N/A |
| r21.1 | Bonds/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x15 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| r21.4 | 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:x3 | N/A |
| 16.1 | 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 | N/A | boi_RP:x19 | N/A |
| 16.4 | 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:x3 | N/A |
| 17.1 | 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 | N/A | boi_RP:x19 | N/A |
| 17.4 | 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:x3 | N/A |
| 18.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x15 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| 18.4 | 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:x3 | N/A |
| r25.1 | Other liabilities:/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x472 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| r25.4 | 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:x3 | N/A |
| 19.1 | 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 | N/A | boi_RP:x19 | N/A |
| 19.4 | 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:x3 | N/A |
| 20.1 | 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 | N/A | boi_RP:x19 | N/A |
| 20.4 | 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:x3 | N/A |
| 21.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x472 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| 21.4 | 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:x3 | N/A |
| 22.1 | Total interest - bearing liabilities/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x3 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| 22.4 | Total interest - bearing liabilities/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:x3 | N/A |
| 23.1 | 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 | N/A | boi_RP:x19 | N/A |
| 23.4 | 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:x3 | N/A |
| 24.1 | 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 | N/A | boi_RP:x19 | N/A |
| 24.4 | 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:x3 | N/A |
| 25.1 | 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 | N/A | boi_RP:x19 | N/A |
| 25.4 | 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:x3 | N/A |
| 26.1 | Total liabilities/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x2 | N/A | boi_MC:x3 | N/A | N/A | boi_RP:x19 | N/A |
| 26.4 | 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:x3 | N/A |
| 27.1 | Total capital means/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x3 | boi_CS:x2 | N/A | boi_MC:x2 | N/A | N/A | boi_RP:x19 | N/A |
| 27.4 | 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:x3 | N/A |
| r35.1 | Interest spread 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 | N/A | boi_RP:x19 | N/A |
| r35.4 | Interest spread 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:x3 | N/A |
| 29.1 | 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 | N/A | boi_RP:x19 | N/A |
| 29.4 | 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:x3 | N/A |
| 30.1 | 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 | N/A | boi_RP:x19 | N/A |
| 30.4 | 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:x3 | N/A |
| 31.1 | Total/Average balance | boi_met:md86 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x2 | N/A | boi_MC:x1 | boi_MC:x962 | N/A | boi_RP:x19 | N/A |
| 31.4 | 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:x3 | N/A |
| 32.1 | 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 | N/A | boi_RP:x19 | N/A |
| 32.4 | 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:x3 | N/A |