| r0.1 | label_boi_a2/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| r0.2 | label_boi_a2/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| r0.3 | label_boi_a2/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| r0.4 | label_boi_a2/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 1.1 | Checks/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x1 |
| 1.2 | Checks/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x1 |
| 1.3 | Checks/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x1 |
| 1.4 | Checks/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x1 |
| 2.1 | Cash/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x2 |
| 2.2 | Cash/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x2 |
| 2.3 | Cash/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x2 |
| 2.4 | Cash/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x2 |
| 3.1 | By means of ATMs/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x3 |
| 3.2 | By means of ATMs/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x3 |
| 3.3 | By means of ATMs/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x3 |
| 3.4 | By means of ATMs/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x3 |
| 4.1 | By authorization/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x4 |
| 4.2 | By authorization/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x4 |
| 4.3 | By authorization/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x4 |
| 4.4 | By authorization/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x4 |
| 5.1 | Other/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x5 |
| 5.2 | Other/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x5 |
| 5.3 | Other/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x5 |
| 5.4 | Other/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x5 |
| 6.1 | Total/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 6.2 | Total/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 6.3 | Total/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 6.4 | Total/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | N/A |
| 7.1 | Payment of checks drawn on reporting banking corporation/No. of debits | boi_met:ri126 | xbrli:decimalItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x8 |
| 7.2 | Payment of checks drawn on reporting banking corporation/Sum of debits | boi_met:md127 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x8 |
| 7.3 | Payment of checks drawn on reporting banking corporation/No. of debits | boi_met:ii131 | xbrli:integerItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x8 |
| 7.4 | Payment of checks drawn on reporting banking corporation/Sum of debits | boi_met:md129 | xbrli:monetaryItemType | instant | boi_BC:x24 | boi_CS:x1 | boi_CU:x1 | boi_MC:x53 | boi_SE:x16 | boi_TT:x8 |