| r0.1 | label_boi_a2/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | N/A |
| r0.2 | label_boi_a2/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | N/A |
| r0.3 | label_boi_a2/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | N/A |
| r0.4 | label_boi_a2/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | N/A |
| 1.1 | Borrower balance up to 5/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x170 |
| 1.2 | Borrower balance up to 5/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x170 |
| 1.3 | Borrower balance up to 5/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x170 |
| 1.4 | Borrower balance up to 5/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x170 |
| 2.1 | Borrower balance >5 - 10/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x171 |
| 2.2 | Borrower balance >5 - 10/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x171 |
| 2.3 | Borrower balance >5 - 10/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x171 |
| 2.4 | Borrower balance >5 - 10/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x171 |
| 3.1 | Borrower balance >10 - 15/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x172 |
| 3.2 | Borrower balance >10 - 15/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x172 |
| 3.3 | Borrower balance >10 - 15/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x172 |
| 3.4 | Borrower balance >10 - 15/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x172 |
| 4.1 | Borrower balance >15 - 20/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x173 |
| 4.2 | Borrower balance >15 - 20/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x173 |
| 4.3 | Borrower balance >15 - 20/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x173 |
| 4.4 | Borrower balance >15 - 20/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x173 |
| 5.1 | Borrower balance >20 - 30/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x174 |
| 5.2 | Borrower balance >20 - 30/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x174 |
| 5.3 | Borrower balance >20 - 30/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x174 |
| 5.4 | Borrower balance >20 - 30/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x174 |
| 6.1 | Borrower balance >30 - 40/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x175 |
| 6.2 | Borrower balance >30 - 40/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x175 |
| 6.3 | Borrower balance >30 - 40/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x175 |
| 6.4 | Borrower balance >30 - 40/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x175 |
| 7.1 | Borrower balance >40 - 80/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x67 |
| 7.2 | Borrower balance >40 - 80/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x67 |
| 7.3 | Borrower balance >40 - 80/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x67 |
| 7.4 | Borrower balance >40 - 80/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x67 |
| 8.1 | Borrower balance >80 - 150/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x68 |
| 8.2 | Borrower balance >80 - 150/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x68 |
| 8.3 | Borrower balance >80 - 150/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x68 |
| 8.4 | Borrower balance >80 - 150/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x68 |
| 9.1 | Borrower balance >150 - 300/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x69 |
| 9.2 | Borrower balance >150 - 300/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x69 |
| 9.3 | Borrower balance >150 - 300/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x69 |
| 9.4 | Borrower balance >150 - 300/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x69 |
| 10.1 | Borrower balance >300 - 600/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x70 |
| 10.2 | Borrower balance >300 - 600/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x70 |
| 10.3 | Borrower balance >300 - 600/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x70 |
| 10.4 | Borrower balance >300 - 600/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x70 |
| 11.1 | Borrower balance >600 - 1,200/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x71 |
| 11.2 | Borrower balance >600 - 1,200/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x71 |
| 11.3 | Borrower balance >600 - 1,200/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x71 |
| 11.4 | Borrower balance >600 - 1,200/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x71 |
| 12.1 | Borrower balance >1,200 - 2,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x72 |
| 12.2 | Borrower balance >1,200 - 2,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x72 |
| 12.3 | Borrower balance >1,200 - 2,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x72 |
| 12.4 | Borrower balance >1,200 - 2,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x72 |
| 13.1 | Borrower balance >2,000 - 4,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x73 |
| 13.2 | Borrower balance >2,000 - 4,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x73 |
| 13.3 | Borrower balance >2,000 - 4,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x73 |
| 13.4 | Borrower balance >2,000 - 4,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x73 |
| 14.1 | Borrower balance >4,000 - 8,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x74 |
| 14.2 | Borrower balance >4,000 - 8,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x74 |
| 14.3 | Borrower balance >4,000 - 8,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x74 |
| 14.4 | Borrower balance >4,000 - 8,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x74 |
| 15.1 | Borrower balance >8,000 - 20,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x75 |
| 15.2 | Borrower balance >8,000 - 20,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x75 |
| 15.3 | Borrower balance >8,000 - 20,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x75 |
| 15.4 | Borrower balance >8,000 - 20,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x75 |
| 16.1 | Borrower balance >20,000 - 40,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x76 |
| 16.2 | Borrower balance >20,000 - 40,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x76 |
| 16.3 | Borrower balance >20,000 - 40,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x76 |
| 16.4 | Borrower balance >20,000 - 40,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x76 |
| 17.1 | Borrower balance >40,000 - 200,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x77 |
| 17.2 | Borrower balance >40,000 - 200,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x77 |
| 17.3 | Borrower balance >40,000 - 200,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x77 |
| 17.4 | Borrower balance >40,000 - 200,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x77 |
| 18.1 | Credit to borrower >200,000 - 400,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x78 |
| 18.2 | Credit to borrower >200,000 - 400,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x78 |
| 18.3 | Credit to borrower >200,000 - 400,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x78 |
| 18.4 | Credit to borrower >200,000 - 400,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x78 |
| 19.1 | Credit to borrower >400,000/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | boi_VI:x176 |
| 19.2 | Credit to borrower >400,000/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x176 |
| 19.3 | Credit to borrower >400,000/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x176 |
| 19.4 | Credit to borrower >400,000/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | boi_VI:x176 |
| 20.1 | Total/No. of borrowers2 | boi_met:id89 | xbrli:integerItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | boi_MU:x1 | boi_RP:x24 | boi_SE:x89 | N/A |
| 20.2 | Total/Total | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | N/A |
| 20.3 | Total/Thereof: w/bank guarantee | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x1 | boi_CS:x2 | boi_MC:x984 | N/A | boi_RP:x24 | boi_SE:x89 | N/A |
| 20.4 | Total/Credit risk3 | boi_met:mi699 | xbrli:monetaryItemType | instant | N/A | N/A | boi_CS:x2 | N/A | N/A | boi_RP:x24 | boi_SE:x89 | N/A |