| r0.1 | label_boi_a2/Nonindexed NIS | | | | N/A | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r0.2 | label_boi_a2/CPI-indexed NIS | | | | N/A | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r0.3 | label_boi_a2/USD (incl. USD-indexed) | | | | N/A | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r0.4 | label_boi_a2/EUR (incl. EUR-indexed) | | | | N/A | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r0.5 | label_boi_a2/Other FX (incl. Indexed to other FX) | | | | N/A | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r0.6 | label_boi_a2/Non-financial items | | | | N/A | boi_CS:x1 | N/A | N/A | boi_FN:x2 | N/A | N/A | N/A |
| r0.7 | label_boi_a2/Total | | | | N/A | boi_CS:x1 | N/A | N/A | N/A | N/A | N/A | N/A |
| r1.1 | Assets:/Nonindexed NIS | | | | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r1.2 | Assets:/CPI-indexed NIS | | | | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r1.3 | Assets:/USD (incl. USD-indexed) | | | | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r1.4 | Assets:/EUR (incl. EUR-indexed) | | | | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r1.5 | Assets:/Other FX (incl. Indexed to other FX) | | | | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r1.6 | Assets:/Non-financial items | | | | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | N/A | N/A | N/A |
| r1.7 | Assets:/Total | | | | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | N/A | N/A | N/A |
| 1.1 | Cash and bank deposits/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.2 | Cash and bank deposits/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.3 | Cash and bank deposits/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.4 | Cash and bank deposits/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.5 | Cash and bank deposits/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.6 | Cash and bank deposits/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x9 | N/A | boi_SE:x1 |
| 1.7 | Cash and bank deposits/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x9 | N/A | boi_SE:x1 |
| 2.1 | Securities/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x29 | N/A | N/A |
| 2.2 | Securities/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x29 | N/A | N/A |
| 2.3 | Securities/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x29 | N/A | N/A |
| 2.4 | Securities/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x29 | N/A | N/A |
| 2.5 | Securities/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x29 | N/A | N/A |
| 2.6 | Securities/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x29 | N/A | N/A |
| 2.7 | Securities/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x29 | N/A | N/A |
| 3.1 | Securities borrowed or acquired under repurchase agreements/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 3.2 | Securities borrowed or acquired under repurchase agreements/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 3.3 | Securities borrowed or acquired under repurchase agreements/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 3.4 | Securities borrowed or acquired under repurchase agreements/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 3.5 | Securities borrowed or acquired under repurchase agreements/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 3.6 | Securities borrowed or acquired under repurchase agreements/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x28 | N/A | N/A |
| 3.7 | Securities borrowed or acquired under repurchase agreements/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x28 | N/A | N/A |
| 4.1 | Credit to the public/Nonindexed NIS | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.2 | Credit to the public/CPI-indexed NIS | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.3 | Credit to the public/USD (incl. USD-indexed) | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.4 | Credit to the public/EUR (incl. EUR-indexed) | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.5 | Credit to the public/Other FX (incl. Indexed to other FX) | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.6 | Credit to the public/Non-financial items | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x8 | N/A | boi_SE:x16 |
| 4.7 | Credit to the public/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.1 | Credit loss provision/Nonindexed NIS | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.2 | Credit loss provision/CPI-indexed NIS | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.3 | Credit loss provision/USD (incl. USD-indexed) | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.4 | Credit loss provision/EUR (incl. EUR-indexed) | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.5 | Credit loss provision/Other FX (incl. Indexed to other FX) | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.6 | Credit loss provision/Non-financial items | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x8 | N/A | boi_SE:x16 |
| 5.7 | Credit loss provision/Total | boi_met:mi3 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.1 | Credit to the public, net/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.2 | Credit to the public, net/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.3 | Credit to the public, net/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.4 | Credit to the public, net/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.5 | Credit to the public, net/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.6 | Credit to the public, net/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x8 | N/A | boi_SE:x16 |
| 6.7 | Credit to the public, net/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x8 | N/A | boi_SE:x16 |
| 7.1 | Credit to the government/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.2 | Credit to the government/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.3 | Credit to the government/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.4 | Credit to the government/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.5 | Credit to the government/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.6 | Credit to the government/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x8 | N/A | boi_SE:x11 |
| 7.7 | Credit to the government/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x8 | N/A | boi_SE:x11 |
| 8.1 | Investments in included companies/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x54 | N/A | N/A |
| 8.2 | Investments in included companies/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x54 | N/A | N/A |
| 8.3 | Investments in included companies/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x54 | N/A | N/A |
| 8.4 | Investments in included companies/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x54 | N/A | N/A |
| 8.5 | Investments in included companies/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x54 | N/A | N/A |
| 8.6 | Investments in included companies/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x54 | N/A | N/A |
| 8.7 | Investments in included companies/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x54 | N/A | N/A |
| 9.1 | Buildings and equipment/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x6 | N/A | N/A |
| 9.2 | Buildings and equipment/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x6 | N/A | N/A |
| 9.3 | Buildings and equipment/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x6 | N/A | N/A |
| 9.4 | Buildings and equipment/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x6 | N/A | N/A |
| 9.5 | Buildings and equipment/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x6 | N/A | N/A |
| 9.6 | Buildings and equipment/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x6 | N/A | N/A |
| 9.7 | Buildings and equipment/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x6 | N/A | N/A |
| 10.1 | Intangible assets and goodwill/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x19 | N/A | N/A |
| 10.2 | Intangible assets and goodwill/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x19 | N/A | N/A |
| 10.3 | Intangible assets and goodwill/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x19 | N/A | N/A |
| 10.4 | Intangible assets and goodwill/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x19 | N/A | N/A |
| 10.5 | Intangible assets and goodwill/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x19 | N/A | N/A |
| 10.6 | Intangible assets and goodwill/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x19 | N/A | N/A |
| 10.7 | Intangible assets and goodwill/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x19 | N/A | N/A |
| 11.1 | Assets on account of derivatives/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 11.2 | Assets on account of derivatives/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 11.3 | Assets on account of derivatives/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 11.4 | Assets on account of derivatives/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 11.5 | Assets on account of derivatives/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 11.6 | Assets on account of derivatives/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x18 | N/A | N/A |
| 11.7 | Assets on account of derivatives/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x18 | N/A | N/A |
| 12.1 | Other assets/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x41 | N/A | N/A |
| 12.2 | Other assets/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x41 | N/A | N/A |
| 12.3 | Other assets/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x41 | N/A | N/A |
| 12.4 | Other assets/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x41 | N/A | N/A |
| 12.5 | Other assets/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x41 | N/A | N/A |
| 12.6 | Other assets/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x41 | N/A | N/A |
| 12.7 | Other assets/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x41 | N/A | N/A |
| 13.1 | Total assets/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x1 | N/A | N/A |
| 13.2 | Total assets/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x1 | N/A | N/A |
| 13.3 | Total assets/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x1 | N/A | N/A |
| 13.4 | Total assets/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x1 | N/A | N/A |
| 13.5 | Total assets/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x1 | N/A | N/A |
| 13.6 | Total assets/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x1 | N/A | N/A |
| 13.7 | Total assets/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x1 | N/A | N/A |
| r15.1 | Liabilities:/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r15.2 | Liabilities:/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r15.3 | Liabilities:/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r15.4 | Liabilities:/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r15.5 | Liabilities:/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| r15.6 | Liabilities:/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | N/A | N/A | N/A |
| r15.7 | Liabilities:/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | N/A | N/A | N/A |
| 14.1 | Deposits of the public/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.2 | Deposits of the public/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.3 | Deposits of the public/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.4 | Deposits of the public/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.5 | Deposits of the public/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.6 | Deposits of the public/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x17 | N/A | boi_SE:x16 |
| 14.7 | Deposits of the public/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x17 | N/A | boi_SE:x16 |
| 15.1 | Deposits from banks/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.2 | Deposits from banks/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.3 | Deposits from banks/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.4 | Deposits from banks/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.5 | Deposits from banks/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.6 | Deposits from banks/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x17 | N/A | boi_SE:x1 |
| 15.7 | Deposits from banks/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x17 | N/A | boi_SE:x1 |
| 16.1 | Government deposits/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.2 | Government deposits/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.3 | Government deposits/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.4 | Government deposits/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.5 | Government deposits/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.6 | Government deposits/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x17 | N/A | boi_SE:x11 |
| 16.7 | Government deposits/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x17 | N/A | boi_SE:x11 |
| 17.1 | Securities lent or sold under repurchase agreements/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 17.2 | Securities lent or sold under repurchase agreements/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 17.3 | Securities lent or sold under repurchase agreements/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 17.4 | Securities lent or sold under repurchase agreements/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 17.5 | Securities lent or sold under repurchase agreements/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x28 | N/A | N/A |
| 17.6 | Securities lent or sold under repurchase agreements/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x28 | N/A | N/A |
| 17.7 | Securities lent or sold under repurchase agreements/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x28 | N/A | N/A |
| 18.1 | Bonds and subordinated capital notes/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x15 | N/A | N/A |
| 18.2 | Bonds and subordinated capital notes/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x15 | N/A | N/A |
| 18.3 | Bonds and subordinated capital notes/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x15 | N/A | N/A |
| 18.4 | Bonds and subordinated capital notes/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x15 | N/A | N/A |
| 18.5 | Bonds and subordinated capital notes/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x15 | N/A | N/A |
| 18.6 | Bonds and subordinated capital notes/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x15 | N/A | N/A |
| 18.7 | Bonds and subordinated capital notes/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x15 | N/A | N/A |
| 19.1 | Liabilities on account of derivatives/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 19.2 | Liabilities on account of derivatives/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 19.3 | Liabilities on account of derivatives/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 19.4 | Liabilities on account of derivatives/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 19.5 | Liabilities on account of derivatives/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x18 | N/A | N/A |
| 19.6 | Liabilities on account of derivatives/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x18 | N/A | N/A |
| 19.7 | Liabilities on account of derivatives/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x18 | N/A | N/A |
| 20.1 | Other liabilities/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x20 | N/A | N/A |
| 20.2 | Other liabilities/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x20 | N/A | N/A |
| 20.3 | Other liabilities/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x20 | N/A | N/A |
| 20.4 | Other liabilities/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x20 | N/A | N/A |
| 20.5 | Other liabilities/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x20 | N/A | N/A |
| 20.6 | Other liabilities/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x20 | N/A | N/A |
| 20.7 | Other liabilities/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x20 | N/A | N/A |
| 21.1 | Total liabilities/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x3 | N/A | N/A |
| 21.2 | Total liabilities/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x3 | N/A | N/A |
| 21.3 | Total liabilities/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x3 | N/A | N/A |
| 21.4 | Total liabilities/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x3 | N/A | N/A |
| 21.5 | Total liabilities/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x3 | N/A | N/A |
| 21.6 | Total liabilities/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x3 | N/A | N/A |
| 21.7 | Total liabilities/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x3 | N/A | N/A |
| 22.1 | Difference/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| 22.2 | Difference/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| 22.3 | Difference/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| 22.4 | Difference/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| 22.5 | Difference/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | N/A | N/A | N/A |
| 22.6 | Difference/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | N/A | N/A | N/A |
| 22.7 | Difference/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | N/A | N/A | N/A | N/A | N/A |
| r25.1 | Effect of hedging derivatives/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x11 | N/A |
| r25.2 | Effect of hedging derivatives/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x11 | N/A |
| r25.3 | Effect of hedging derivatives/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x11 | N/A |
| r25.4 | Effect of hedging derivatives/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x11 | N/A |
| r25.5 | Effect of hedging derivatives/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x11 | N/A |
| r25.6 | Effect of hedging derivatives/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | N/A | boi_PL:x11 | N/A |
| r25.7 | Effect of hedging derivatives/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | N/A | boi_PL:x11 | N/A |
| 23.1 | Derivatives (excl. options)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.2 | Derivatives (excl. options)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.3 | Derivatives (excl. options)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.4 | Derivatives (excl. options)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.5 | Derivatives (excl. options)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.6 | Derivatives (excl. options)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x51 | boi_PL:x11 | N/A |
| 23.7 | Derivatives (excl. options)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x51 | boi_PL:x11 | N/A |
| 24.1 | In-the-money options, net (in underlying asset terms)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.2 | In-the-money options, net (in underlying asset terms)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.3 | In-the-money options, net (in underlying asset terms)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.4 | In-the-money options, net (in underlying asset terms)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.5 | In-the-money options, net (in underlying asset terms)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.6 | In-the-money options, net (in underlying asset terms)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x49 | boi_PL:x11 | N/A |
| 24.7 | In-the-money options, net (in underlying asset terms)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x49 | boi_PL:x11 | N/A |
| 25.1 | Out of-the-money options, net (in underlying asset terms)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.2 | Out of-the-money options, net (in underlying asset terms)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.3 | Out of-the-money options, net (in underlying asset terms)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.4 | Out of-the-money options, net (in underlying asset terms)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.5 | Out of-the-money options, net (in underlying asset terms)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.6 | Out of-the-money options, net (in underlying asset terms)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x50 | boi_PL:x11 | N/A |
| 25.7 | Out of-the-money options, net (in underlying asset terms)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x50 | boi_PL:x11 | N/A |
| r29.1 | Effect of non-hedging derivatives/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x13 | N/A |
| r29.2 | Effect of non-hedging derivatives/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x13 | N/A |
| r29.3 | Effect of non-hedging derivatives/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x13 | N/A |
| r29.4 | Effect of non-hedging derivatives/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x13 | N/A |
| r29.5 | Effect of non-hedging derivatives/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | N/A | boi_PL:x13 | N/A |
| r29.6 | Effect of non-hedging derivatives/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | N/A | boi_PL:x13 | N/A |
| r29.7 | Effect of non-hedging derivatives/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | N/A | boi_PL:x13 | N/A |
| 26.1 | Derivatives (excl. options)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.2 | Derivatives (excl. options)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.3 | Derivatives (excl. options)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.4 | Derivatives (excl. options)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.5 | Derivatives (excl. options)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.6 | Derivatives (excl. options)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x51 | boi_PL:x13 | N/A |
| 26.7 | Derivatives (excl. options)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x51 | boi_PL:x13 | N/A |
| 27.1 | In-the-money options, net (in underlying asset terms)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.2 | In-the-money options, net (in underlying asset terms)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.3 | In-the-money options, net (in underlying asset terms)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.4 | In-the-money options, net (in underlying asset terms)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.5 | In-the-money options, net (in underlying asset terms)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.6 | In-the-money options, net (in underlying asset terms)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x49 | boi_PL:x13 | N/A |
| 27.7 | In-the-money options, net (in underlying asset terms)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x49 | boi_PL:x13 | N/A |
| 28.1 | Out of-the-money options, net (in underlying asset terms)/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.2 | Out of-the-money options, net (in underlying asset terms)/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.3 | Out of-the-money options, net (in underlying asset terms)/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.4 | Out of-the-money options, net (in underlying asset terms)/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.5 | Out of-the-money options, net (in underlying asset terms)/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x2 | boi_FN:x1 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.6 | Out of-the-money options, net (in underlying asset terms)/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | boi_FN:x2 | boi_MC:x50 | boi_PL:x13 | N/A |
| 28.7 | Out of-the-money options, net (in underlying asset terms)/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x2 | N/A | boi_MC:x50 | boi_PL:x13 | N/A |
| 29.1 | Grand total/Nonindexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x5 | boi_EF:x1 | boi_FN:x1 | N/A | N/A | N/A |
| 29.2 | Grand total/CPI-indexed NIS | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x6 | boi_EF:x1 | boi_FN:x1 | N/A | N/A | N/A |
| 29.3 | Grand total/USD (incl. USD-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x16 | boi_EF:x1 | boi_FN:x1 | N/A | N/A | N/A |
| 29.4 | Grand total/EUR (incl. EUR-indexed) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x17 | boi_EF:x1 | boi_FN:x1 | N/A | N/A | N/A |
| 29.5 | Grand total/Other FX (incl. Indexed to other FX) | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | boi_CU:x9 | boi_EF:x1 | boi_FN:x1 | N/A | N/A | N/A |
| 29.6 | Grand total/Non-financial items | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x1 | boi_FN:x2 | N/A | N/A | N/A |
| 29.7 | Grand total/Total | boi_met:mi1 | xbrli:monetaryItemType | instant | boi_BC:x5 | boi_CS:x1 | N/A | boi_EF:x1 | N/A | N/A | N/A | N/A |
| 30.1 | In-the-money options, net (discounted par value)/Nonindexed NIS | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x49 | N/A | N/A |
| 30.2 | In-the-money options, net (discounted par value)/CPI-indexed NIS | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x49 | N/A | N/A |
| 30.3 | In-the-money options, net (discounted par value)/USD (incl. USD-indexed) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x49 | N/A | N/A |
| 30.4 | In-the-money options, net (discounted par value)/EUR (incl. EUR-indexed) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x49 | N/A | N/A |
| 30.5 | In-the-money options, net (discounted par value)/Other FX (incl. Indexed to other FX) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x49 | N/A | N/A |
| 30.6 | In-the-money options, net (discounted par value)/Non-financial items | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x49 | N/A | N/A |
| 30.7 | In-the-money options, net (discounted par value)/Total | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x49 | N/A | N/A |
| 31.1 | Out-of-the-money options, net (discounted par value)/Nonindexed NIS | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x5 | N/A | boi_FN:x1 | boi_MC:x50 | N/A | N/A |
| 31.2 | Out-of-the-money options, net (discounted par value)/CPI-indexed NIS | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x6 | N/A | boi_FN:x1 | boi_MC:x50 | N/A | N/A |
| 31.3 | Out-of-the-money options, net (discounted par value)/USD (incl. USD-indexed) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x16 | N/A | boi_FN:x1 | boi_MC:x50 | N/A | N/A |
| 31.4 | Out-of-the-money options, net (discounted par value)/EUR (incl. EUR-indexed) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x17 | N/A | boi_FN:x1 | boi_MC:x50 | N/A | N/A |
| 31.5 | Out-of-the-money options, net (discounted par value)/Other FX (incl. Indexed to other FX) | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | boi_CU:x9 | N/A | boi_FN:x1 | boi_MC:x50 | N/A | N/A |
| 31.6 | Out-of-the-money options, net (discounted par value)/Non-financial items | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | N/A | N/A | boi_FN:x2 | boi_MC:x50 | N/A | N/A |
| 31.7 | Out-of-the-money options, net (discounted par value)/Total | boi_met:mi556 | xbrli:monetaryItemType | instant | boi_BC:x29 | boi_CS:x1 | N/A | N/A | N/A | boi_MC:x50 | N/A | N/A |