| r0.1 | label_boi_a2/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | N/A | boi_SE:x313 |
| r0.2 | label_boi_a2/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | N/A | boi_SE:x313 |
| r0.3 | label_boi_a2/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | N/A | boi_SE:x313 |
| r0.4 | label_boi_a2/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | N/A | boi_SE:x313 |
| r0.5 | label_boi_a2/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | N/A | boi_SE:x313 |
| r0.6 | label_boi_a2/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | N/A | boi_SE:x313 |
| 1.1 | Number of activties/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | N/A | boi_SE:x313 |
| 1.2 | Number of activties/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | N/A | boi_SE:x313 |
| 1.3 | Number of activties/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | N/A | boi_SE:x313 |
| 1.4 | Number of activties/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | N/A | boi_SE:x313 |
| 1.5 | Number of activties/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | N/A | boi_SE:x313 |
| 1.6 | Number of activties/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | N/A | boi_SE:x313 |
| r2.1 | of which:/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | N/A | boi_SE:x313 |
| r2.2 | of which:/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | N/A | boi_SE:x313 |
| r2.3 | of which:/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | N/A | boi_SE:x313 |
| r2.4 | of which:/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | N/A | boi_SE:x313 |
| r2.5 | of which:/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | N/A | boi_SE:x313 |
| r2.6 | of which:/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | N/A | boi_SE:x313 |
| 2.1 | Transfers and payments/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1165 | boi_SE:x313 |
| 2.2 | Transfers and payments/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1165 | boi_SE:x313 |
| 2.3 | Transfers and payments/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1165 | boi_SE:x313 |
| 2.4 | Transfers and payments/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1165 | boi_SE:x313 |
| 2.5 | Transfers and payments/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1165 | boi_SE:x313 |
| 2.6 | Transfers and payments/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1165 | boi_SE:x313 |
| r4.1 | Checks/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | N/A | boi_SE:x313 |
| r4.2 | Checks/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | N/A | boi_SE:x313 |
| r4.3 | Checks/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | N/A | boi_SE:x313 |
| r4.4 | Checks/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | N/A | boi_SE:x313 |
| r4.5 | Checks/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | N/A | boi_SE:x313 |
| r4.6 | Checks/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | N/A | boi_SE:x313 |
| 3.1 | Depositing checks/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1166 | boi_SE:x313 |
| 3.2 | Depositing checks/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1166 | boi_SE:x313 |
| 3.3 | Depositing checks/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1166 | boi_SE:x313 |
| 3.4 | Depositing checks/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1166 | boi_SE:x313 |
| 3.5 | Depositing checks/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1166 | boi_SE:x313 |
| 3.6 | Depositing checks/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1166 | boi_SE:x313 |
| 4.1 | Ordering checkbooks/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1167 | boi_SE:x313 |
| 4.2 | Ordering checkbooks/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1167 | boi_SE:x313 |
| 4.3 | Ordering checkbooks/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1167 | boi_SE:x313 |
| 4.4 | Ordering checkbooks/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1167 | boi_SE:x313 |
| 4.5 | Ordering checkbooks/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1167 | boi_SE:x313 |
| 4.6 | Ordering checkbooks/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1167 | boi_SE:x313 |
| 5.1 | Submitting a loan request/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1168 | boi_SE:x313 |
| 5.2 | Submitting a loan request/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1168 | boi_SE:x313 |
| 5.3 | Submitting a loan request/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1168 | boi_SE:x313 |
| 5.4 | Submitting a loan request/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1168 | boi_SE:x313 |
| 5.5 | Submitting a loan request/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1168 | boi_SE:x313 |
| 5.6 | Submitting a loan request/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1168 | boi_SE:x313 |
| 6.1 | Deposit/withdrawal of deposit/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1169 | boi_SE:x313 |
| 6.2 | Deposit/withdrawal of deposit/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1169 | boi_SE:x313 |
| 6.3 | Deposit/withdrawal of deposit/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1169 | boi_SE:x313 |
| 6.4 | Deposit/withdrawal of deposit/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1169 | boi_SE:x313 |
| 6.5 | Deposit/withdrawal of deposit/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1169 | boi_SE:x313 |
| 6.6 | Deposit/withdrawal of deposit/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1169 | boi_SE:x313 |
| 7.1 | Purchase/sale of securities/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1170 | boi_SE:x313 |
| 7.2 | Purchase/sale of securities/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1170 | boi_SE:x313 |
| 7.3 | Purchase/sale of securities/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1170 | boi_SE:x313 |
| 7.4 | Purchase/sale of securities/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1170 | boi_SE:x313 |
| 7.5 | Purchase/sale of securities/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1170 | boi_SE:x313 |
| 7.6 | Purchase/sale of securities/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1170 | boi_SE:x313 |
| 8.1 | Forex transfer/E-banking channels | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1155 | boi_MC:x1173 | boi_SE:x313 |
| 8.2 | Forex transfer/Website | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1156 | boi_MC:x1173 | boi_SE:x313 |
| 8.3 | Forex transfer/Application | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1157 | boi_MC:x1173 | boi_SE:x313 |
| 8.4 | Forex transfer/Self-service stands (ATMs) | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x1158 | boi_MC:x1173 | boi_SE:x313 |
| 8.5 | Forex transfer/Teller at branch | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x807 | boi_MC:x1173 | boi_SE:x313 |
| 8.6 | Forex transfer/Total | boi_met:ii681 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_MC:x806 | boi_MC:x1173 | boi_SE:x313 |