| r0.1 | label_boi_a2/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | N/A | boi_SE:x73 |
| 3.1 | Number of customers: Individuals/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_SE:x147 | boi_SE:x73 |
| 4.1 | Number of customers: Corporations/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_SE:x346 | boi_SE:x73 |
| 5.1 | Number of customers: Other (neither individual nor corporation)/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_SE:x347 | boi_SE:x73 |
| 6.1 | Number of customers—total/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | N/A | boi_SE:x73 |
| r5.1 | Of which:/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | N/A | boi_SE:x73 |
| 7.1 | Customers blocked for reasons of AML/CFT/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x62 | N/A | boi_SE:x73 |
| 8.1 | Corporations that incorporated in offshore country/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x63 | N/A | boi_SE:x73 |
| 9.1 | Customers who executed a transaction with precious stones dealers and precious metal dealers/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x85 | N/A | boi_SE:x73 |
| 10.1 | Customers who executed a transaction with Money service business/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x68 | N/A | boi_SE:x73 |
| 11.1 | Foreign politically exposed persons, including senior officer in an international institution/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x69 | N/A | boi_SE:x73 |
| 12.1 | Domestic politically exposed persons/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x70 | N/A | boi_SE:x73 |
| 13.1 | Customers who executed a transaction with nonprofit organizations/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x71 | N/A | boi_SE:x73 |
| 14.1 | Customers who executed a transaction with security manufacturers and services providers/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x72 | N/A | boi_SE:x73 |
| 15.1 | Private banking/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x74 | N/A | boi_SE:x73 |
| 16.1 | Online/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x76 | N/A | boi_SE:x73 |
| 17.1 | Customers with intensive cash activity/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x77 | N/A | boi_SE:x73 |
| 18.1 | Customers with intensive cross-border wire transfers/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x78 | N/A | boi_SE:x73 |
| 19.1 | Customers with intensive cross-border wire transfers - to/from offshore countries/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x79 | N/A | boi_SE:x73 |
| 20.1 | Customers with intensive cross-border wire transfers - to/from countries at high risk/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x80 | N/A | boi_SE:x73 |
| 21.1 | Customers who executed a transaction in risk-intensive industries/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x86 | N/A | boi_SE:x73 |
| 22.1 | Cusomters who executed a missing document transaction/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x87 | N/A | boi_SE:x73 |
| 23.1 | Customers who executed a transaction with virtual asset service providers/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x81 | N/A | boi_SE:x73 |
| 24.1 | Prepaid cards/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x88 | N/A | boi_SE:x73 |
| 25.1 | Customers with existing and developing significant focal points of risk/Total number of customers | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x84 | N/A | boi_SE:x73 |