| r0.2 | label_boi_a2/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | N/A | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r0.3 | label_boi_a2/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | N/A | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r1.2 | Credit to the public/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| r1.3 | Credit to the public/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 1.2 | In Isarel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 1.3 | In Isarel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 2.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 2.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 3.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 3.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 4.2 | Of which: Fees/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x267 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| 4.3 | Of which: Fees/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x267 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x16 |
| r6.2 | Credit to the government/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| r6.3 | Credit to the government/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 5.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 5.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 6.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 6.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 7.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| 7.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x11 |
| r10.2 | Deposits in Banks/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| r10.3 | Deposits in Banks/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 8.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 8.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 9.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 9.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 10.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| 10.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x8 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x5 |
| r14.2 | Deposits in Central/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r14.3 | Deposits in Central/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 11.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x20 |
| 11.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x20 |
| 12.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x21 |
| 12.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x21 |
| 13.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x2 |
| 13.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x9 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | boi_SE:x2 |
| r18.2 | Securities borrowed or purchased under resale agreements:In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r18.3 | Securities borrowed or purchased under resale agreements:In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 14.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 14.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 15.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 15.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 16.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 16.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x28 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r22.2 | Bonds held to maturity and available for sale/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| r22.3 | Bonds held to maturity and available for sale/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 17.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 17.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 18.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 18.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 19.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 19.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x14 | boi_PL:x45 | boi_RP:x25 | N/A |
| 20.2 | Balance of the bonds held to maturity present gains/losses included in shareholders' equity for the bonds transferred from the available for sale/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x5 | boi_PL:x46 | boi_RP:x25 | N/A |
| 20.3 | Balance of the bonds held to maturity present gains/losses included in shareholders' equity for the bonds transferred from the available for sale/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x5 | boi_PL:x46 | boi_RP:x25 | N/A |
| r27.2 | Bonds for trading/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| r27.3 | Bonds for trading/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 21.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 21.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 22.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 22.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 23.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 23.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x45 | boi_RP:x25 | N/A |
| 24.2 | Deducted from the balance of bonds for trading gains/losses unrealized to fair value adjustments/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x46 | boi_RP:x25 | N/A |
| 24.3 | Deducted from the balance of bonds for trading gains/losses unrealized to fair value adjustments/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x2 | boi_PL:x46 | boi_RP:x25 | N/A |
| 25.2 | Deducted from the balance of bonds available for sale gains/losses unrealized to fair value adjustments/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x1 | boi_PL:x46 | boi_RP:x25 | N/A |
| 25.3 | Deducted from the balance of bonds available for sale gains/losses unrealized to fair value adjustments/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x15 | boi_MU:x1 | boi_PL:x1 | boi_PL:x46 | boi_RP:x25 | N/A |
| r33.2 | Other assets/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| r33.3 | Other assets/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 26.2 | In Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 26.3 | In Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x1 | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 27.2 | Outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 27.3 | Outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 28.2 | Total/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 28.3 | Total/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x279 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 29.2 | Total interest - bearing assets/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x1 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 29.3 | Total interest - bearing assets/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | N/A | boi_MC:x125 | boi_MC:x1 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 33.2 | Total income-bearing assets attributable to activity outside Israel/Interest Income | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x1 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |
| 33.3 | Total income-bearing assets attributable to activity outside Israel/Rate of Income | boi_met:pd90 | num:percentItemType | instant | boi_BC:x11 | boi_CS:x2 | boi_GA:x2 | boi_MC:x125 | boi_MC:x1 | boi_MU:x1 | N/A | N/A | boi_RP:x25 | N/A |