| r0.1 | label_boi_a2/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_MU:x1 | boi_RP:x25 |
| r0.2 | label_boi_a2/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | N/A | boi_MU:x1 | boi_RP:x25 |
| 1.1 | Expenses for pensions (include compensation and rewards) defined bonus (without service cost)/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x1088 | boi_MU:x1 | boi_RP:x25 |
| 1.2 | Expenses for pensions (include compensation and rewards) defined bonus (without service cost)/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x1088 | boi_MU:x1 | boi_RP:x25 |
| 2.1 | Cutbacks and settlements/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x1089 | boi_MU:x1 | boi_RP:x25 |
| 2.2 | Cutbacks and settlements/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x1089 | boi_MU:x1 | boi_RP:x25 |
| 3.1 | Marketing and advertising/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x174 | boi_MU:x1 | boi_RP:x25 |
| 3.2 | Marketing and advertising/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x174 | boi_MU:x1 | boi_RP:x25 |
| 4.1 | Communications-postage, telephone, delivery services ,etc./Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x175 | boi_MU:x1 | boi_RP:x25 |
| 4.2 | Communications-postage, telephone, delivery services ,etc./Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x175 | boi_MU:x1 | boi_RP:x25 |
| 5.1 | Computers (Except salaries depreciation and amortisation)/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x176 | boi_MU:x1 | boi_RP:x25 |
| 5.2 | Computers (Except salaries depreciation and amortisation)/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x176 | boi_MU:x1 | boi_RP:x25 |
| 6.1 | Office expenses/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x177 | boi_MU:x1 | boi_RP:x25 |
| 6.2 | Office expenses/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x177 | boi_MU:x1 | boi_RP:x25 |
| 7.1 | Insurance/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x178 | boi_MU:x1 | boi_RP:x25 |
| 7.2 | Insurance/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x178 | boi_MU:x1 | boi_RP:x25 |
| 8.1 | Legal ,audit and professional consultants/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x179 | boi_MU:x1 | boi_RP:x25 |
| 8.2 | Legal ,audit and professional consultants/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x179 | boi_MU:x1 | boi_RP:x25 |
| 9.1 | Board of directors' fees and reimbursement of expenses to directors/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x180 | boi_MU:x1 | boi_RP:x25 |
| 9.2 | Board of directors' fees and reimbursement of expenses to directors/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x180 | boi_MU:x1 | boi_RP:x25 |
| 10.1 | Expenses arising from share-based payments transactions to Directors'*/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x181 | boi_MU:x1 | boi_RP:x25 |
| 10.2 | Expenses arising from share-based payments transactions to Directors'*/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x181 | boi_MU:x1 | boi_RP:x25 |
| 11.1 | Management fee to companies which are related parties/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x184 | boi_MU:x1 | boi_RP:x25 |
| 11.2 | Management fee to companies which are related parties/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x184 | boi_MU:x1 | boi_RP:x25 |
| 12.1 | Training/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x185 | boi_MU:x1 | boi_RP:x25 |
| 12.2 | Training/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x185 | boi_MU:x1 | boi_RP:x25 |
| 13.1 | Commissions/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x186 | boi_MU:x1 | boi_RP:x25 |
| 13.2 | Commissions/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x186 | boi_MU:x1 | boi_RP:x25 |
| 14.1 | Loss in respect of assets received in settlement of loans/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x187 | boi_MU:x1 | boi_RP:x25 |
| 14.2 | Loss in respect of assets received in settlement of loans/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x187 | boi_MU:x1 | boi_RP:x25 |
| 15.1 | Fines to the bank of Israel/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x188 | boi_MU:x1 | boi_RP:x25 |
| 15.2 | Fines to the bank of Israel/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x188 | boi_MU:x1 | boi_RP:x25 |
| 16.1 | Other/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x189 | boi_MU:x1 | boi_RP:x25 |
| 16.2 | Other/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x189 | boi_MU:x1 | boi_RP:x25 |
| 17.1 | Total other expenses/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x173 | boi_MU:x1 | boi_RP:x25 |
| 17.2 | Total other expenses/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x173 | boi_MU:x1 | boi_RP:x25 |
| 18.1 | *Of which: Expenses deriving from share based payments transactions settled in capital instruments/Consolidated | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_MC:x182 | boi_MU:x1 | boi_RP:x25 |
| 18.2 | *Of which: Expenses deriving from share based payments transactions settled in capital instruments/Bank Corporation | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x1 | boi_MC:x182 | boi_MU:x1 | boi_RP:x25 |