| r0.1 | label_boi_a2/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | N/A |
| r0.2 | label_boi_a2/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | N/A |
| r0.3 | label_boi_a2/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | N/A |
| r0.4 | label_boi_a2/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | N/A |
| r0.5 | label_boi_a2/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | N/A |
| r0.6 | label_boi_a2/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | N/A |
| 1.1 | Documentary credit/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x70 |
| 1.2 | Documentary credit/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x70 |
| 1.3 | Documentary credit/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x70 |
| 1.4 | Documentary credit/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x70 |
| 1.5 | Documentary credit/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x70 |
| 1.6 | Documentary credit/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x70 |
| 2.1 | Credit guarantees/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x66 |
| 2.2 | Credit guarantees/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x66 |
| 2.3 | Credit guarantees/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x66 |
| 2.4 | Credit guarantees/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x66 |
| 2.5 | Credit guarantees/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x66 |
| 2.6 | Credit guarantees/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x66 |
| 3.1 | Thereof: guarantees for outstanding debt originating in credit card transactions/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x506 |
| 3.2 | Thereof: guarantees for outstanding debt originating in credit card transactions/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x506 |
| 3.3 | Thereof: guarantees for outstanding debt originating in credit card transactions/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x506 |
| 3.4 | Thereof: guarantees for outstanding debt originating in credit card transactions/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x506 |
| 3.5 | Thereof: guarantees for outstanding debt originating in credit card transactions/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x506 |
| 3.6 | Thereof: guarantees for outstanding debt originating in credit card transactions/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x506 |
| 4.1 | Guarantees to purchasers of homes/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x67 |
| 4.2 | Guarantees to purchasers of homes/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x67 |
| 4.3 | Guarantees to purchasers of homes/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x67 |
| 4.4 | Guarantees to purchasers of homes/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x67 |
| 4.5 | Guarantees to purchasers of homes/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x67 |
| 4.6 | Guarantees to purchasers of homes/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x67 |
| 5.1 | Other guarantees and liabilities/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x994 |
| 5.2 | Other guarantees and liabilities/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x994 |
| 5.3 | Other guarantees and liabilities/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x994 |
| 5.4 | Other guarantees and liabilities/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x994 |
| 5.5 | Other guarantees and liabilities/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x994 |
| 5.6 | Other guarantees and liabilities/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x994 |
| 6.1 | Unrealized line of credit on credit card/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x74 |
| 6.2 | Unrealized line of credit on credit card/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x74 |
| 6.3 | Unrealized line of credit on credit card/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x74 |
| 6.4 | Unrealized line of credit on credit card/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x74 |
| 6.5 | Unrealized line of credit on credit card/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x74 |
| 6.6 | Unrealized line of credit on credit card/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x74 |
| 7.1 | Unrealized line of credit in current line and other accounts/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x75 |
| 7.2 | Unrealized line of credit in current line and other accounts/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x75 |
| 7.3 | Unrealized line of credit in current line and other accounts/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x75 |
| 7.4 | Unrealized line of credit in current line and other accounts/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x75 |
| 7.5 | Unrealized line of credit in current line and other accounts/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x75 |
| 7.6 | Unrealized line of credit in current line and other accounts/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x75 |
| 8.1 | Irrevocable credit granted but not yet issued/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x77 |
| 8.2 | Irrevocable credit granted but not yet issued/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x77 |
| 8.3 | Irrevocable credit granted but not yet issued/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x77 |
| 8.4 | Irrevocable credit granted but not yet issued/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x77 |
| 8.5 | Irrevocable credit granted but not yet issued/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x77 |
| 8.6 | Irrevocable credit granted but not yet issued/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x77 |
| 9.1 | Commitments to issue guarantees/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x76 |
| 9.2 | Commitments to issue guarantees/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x76 |
| 9.3 | Commitments to issue guarantees/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x76 |
| 9.4 | Commitments to issue guarantees/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x76 |
| 9.5 | Commitments to issue guarantees/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x76 |
| 9.6 | Commitments to issue guarantees/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x76 |
| 10.1 | Derivative financial instruments framework unused/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x992 |
| 10.2 | Derivative financial instruments framework unused/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x992 |
| 10.3 | Derivative financial instruments framework unused/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x992 |
| 10.4 | Derivative financial instruments framework unused/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x992 |
| 10.5 | Derivative financial instruments framework unused/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x992 |
| 10.6 | Derivative financial instruments framework unused/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x992 |
| 11.1 | Guarantees to provident funds members/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x508 |
| 11.2 | Guarantees to provident funds members/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x508 |
| 11.3 | Guarantees to provident funds members/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x508 |
| 11.4 | Guarantees to provident funds members/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x508 |
| 11.5 | Guarantees to provident funds members/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x508 |
| 11.6 | Guarantees to provident funds members/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x508 |
| 12.1 | Total/Nonindexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x5 | boi_FN:x1 | boi_MC:x65 |
| 12.2 | Total/CPI-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x6 | boi_FN:x1 | boi_MC:x65 |
| 12.3 | Total/FX-indexed | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x12 | boi_FN:x1 | boi_MC:x65 |
| 12.4 | Total/FX, Israeli activity | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | boi_CU:x13 | N/A | boi_MC:x65 |
| 12.5 | Total/Non-financial items | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | boi_FN:x2 | boi_MC:x65 |
| 12.6 | Total/Total | boi_met:mi204 | xbrli:monetaryItemType | instant | boi_BC:x8 | boi_CS:x1 | N/A | N/A | boi_MC:x65 |