| r0.1 | label_boi_a2/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x5 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| r0.2 | label_boi_a2/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x5 | boi_MC:x160 | N/A | boi_RP:x25 |
| r0.3 | label_boi_a2/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x19 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| r0.4 | label_boi_a2/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x19 | boi_MC:x160 | N/A | boi_RP:x25 |
| r0.5 | label_boi_a2/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x3 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| r0.6 | label_boi_a2/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x3 | boi_MC:x160 | N/A | boi_RP:x25 |
| r0.7 | label_boi_a2/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x21 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| r0.8 | label_boi_a2/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | N/A | boi_IP:x21 | boi_MC:x160 | N/A | boi_RP:x25 |
| 1.1 | Interested parties employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x5 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 1.2 | Interested parties employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x5 | boi_MC:x160 | N/A | boi_RP:x25 |
| 1.3 | Interested parties employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x19 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 1.4 | Interested parties employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x19 | boi_MC:x160 | N/A | boi_RP:x25 |
| 1.5 | Interested parties employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x3 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 1.6 | Interested parties employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x3 | boi_MC:x160 | N/A | boi_RP:x25 |
| 1.7 | Interested parties employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x21 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 1.8 | Interested parties employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x13 | boi_IP:x21 | boi_MC:x160 | N/A | boi_RP:x25 |
| 2.1 | Directors not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x5 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 2.2 | Directors not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x5 | boi_MC:x160 | N/A | boi_RP:x25 |
| 2.3 | Directors not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x19 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 2.4 | Directors not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x19 | boi_MC:x160 | N/A | boi_RP:x25 |
| 2.5 | Directors not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x3 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 2.6 | Directors not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x3 | boi_MC:x160 | N/A | boi_RP:x25 |
| 2.7 | Directors not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x21 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 2.8 | Directors not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x14 | boi_IP:x21 | boi_MC:x160 | N/A | boi_RP:x25 |
| 3.1 | Interested parties not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x5 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 3.2 | Interested parties not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x5 | boi_MC:x160 | N/A | boi_RP:x25 |
| 3.3 | Interested parties not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x19 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 3.4 | Interested parties not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x19 | boi_MC:x160 | N/A | boi_RP:x25 |
| 3.5 | Interested parties not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x3 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 3.6 | Interested parties not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x3 | boi_MC:x160 | N/A | boi_RP:x25 |
| 3.7 | Interested parties not employed in the bank or on its behalf/Total benefits | boi_met:md13 | xbrli:monetaryItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x21 | boi_MC:x160 | boi_MU:x1 | boi_RP:x25 |
| 3.8 | Interested parties not employed in the bank or on its behalf/Number of recipients | boi_met:ii282 | xbrli:integerItemType | instant | boi_BC:x10 | boi_CS:x2 | boi_IP:x15 | boi_IP:x21 | boi_MC:x160 | N/A | boi_RP:x25 |