| r0.2 | label_boi_a2/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| r0.3 | label_boi_a2/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| 3.2 | Number of customers: Individuals/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x147 | boi_SE:x73 |
| 3.3 | Number of customers: Individuals/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x147 | boi_SE:x73 |
| 4.2 | Number of customers: Corporations/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x346 | boi_SE:x73 |
| 4.3 | Number of customers: Corporations/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x346 | boi_SE:x73 |
| 5.2 | Number of customers: Other (neither individual nor corporation)/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x347 | boi_SE:x73 |
| 5.3 | Number of customers: Other (neither individual nor corporation)/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | boi_SE:x347 | boi_SE:x73 |
| 6.2 | Number of customers—total/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| 6.3 | Number of customers—total/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| r5.2 | Of which:/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| r5.3 | Of which:/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | N/A | boi_RT:x24 | N/A | boi_SE:x73 |
| 7.2 | Customers blocked for reasons of AML/CFT/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x62 | boi_RT:x24 | N/A | boi_SE:x73 |
| 7.3 | Customers blocked for reasons of AML/CFT/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x62 | boi_RT:x24 | N/A | boi_SE:x73 |
| 8.2 | Corporations that incorporated in offshore country/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x63 | boi_RT:x24 | N/A | boi_SE:x73 |
| 8.3 | Corporations that incorporated in offshore country/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x63 | boi_RT:x24 | N/A | boi_SE:x73 |
| 9.2 | Customers who executed a transaction with precious stones dealers and precious metal dealers/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x85 | boi_RT:x24 | N/A | boi_SE:x73 |
| 9.3 | Customers who executed a transaction with precious stones dealers and precious metal dealers/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x85 | boi_RT:x24 | N/A | boi_SE:x73 |
| 10.2 | Customers who executed a transaction with Money service business/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x68 | boi_RT:x24 | N/A | boi_SE:x73 |
| 10.3 | Customers who executed a transaction with Money service business/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x68 | boi_RT:x24 | N/A | boi_SE:x73 |
| 11.2 | Foreign politically exposed persons, including senior officer in an international institution/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x69 | boi_RT:x24 | N/A | boi_SE:x73 |
| 11.3 | Foreign politically exposed persons, including senior officer in an international institution/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x69 | boi_RT:x24 | N/A | boi_SE:x73 |
| 12.2 | Domestic politically exposed persons/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x70 | boi_RT:x24 | N/A | boi_SE:x73 |
| 12.3 | Domestic politically exposed persons/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x70 | boi_RT:x24 | N/A | boi_SE:x73 |
| 13.2 | Customers who executed a transaction with nonprofit organizations/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x71 | boi_RT:x24 | N/A | boi_SE:x73 |
| 13.3 | Customers who executed a transaction with nonprofit organizations/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x71 | boi_RT:x24 | N/A | boi_SE:x73 |
| 14.2 | Customers who executed a transaction with security manufacturers and services providers/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x72 | boi_RT:x24 | N/A | boi_SE:x73 |
| 14.3 | Customers who executed a transaction with security manufacturers and services providers/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x72 | boi_RT:x24 | N/A | boi_SE:x73 |
| 15.2 | Private banking/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x74 | boi_RT:x24 | N/A | boi_SE:x73 |
| 15.3 | Private banking/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x74 | boi_RT:x24 | N/A | boi_SE:x73 |
| 16.2 | Online/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x76 | boi_RT:x24 | N/A | boi_SE:x73 |
| 16.3 | Online/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x76 | boi_RT:x24 | N/A | boi_SE:x73 |
| 17.2 | Customers with intensive cash activity/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x77 | boi_RT:x24 | N/A | boi_SE:x73 |
| 17.3 | Customers with intensive cash activity/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x77 | boi_RT:x24 | N/A | boi_SE:x73 |
| 18.2 | Customers with intensive cross-border wire transfers/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x78 | boi_RT:x24 | N/A | boi_SE:x73 |
| 18.3 | Customers with intensive cross-border wire transfers/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x78 | boi_RT:x24 | N/A | boi_SE:x73 |
| 19.2 | Customers with intensive cross-border wire transfers - to/from offshore countries/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x79 | boi_RT:x24 | N/A | boi_SE:x73 |
| 19.3 | Customers with intensive cross-border wire transfers - to/from offshore countries/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x79 | boi_RT:x24 | N/A | boi_SE:x73 |
| 20.2 | Customers with intensive cross-border wire transfers - to/from countries at high risk/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x80 | boi_RT:x24 | N/A | boi_SE:x73 |
| 20.3 | Customers with intensive cross-border wire transfers - to/from countries at high risk/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x80 | boi_RT:x24 | N/A | boi_SE:x73 |
| 21.2 | Customers who executed a transaction in risk-intensive industries/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x86 | boi_RT:x24 | N/A | boi_SE:x73 |
| 21.3 | Customers who executed a transaction in risk-intensive industries/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x86 | boi_RT:x24 | N/A | boi_SE:x73 |
| 22.2 | Cusomters who executed a missing document transaction/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x87 | boi_RT:x24 | N/A | boi_SE:x73 |
| 22.3 | Cusomters who executed a missing document transaction/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x87 | boi_RT:x24 | N/A | boi_SE:x73 |
| 23.2 | Customers who executed a transaction with virtual asset service providers/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x81 | boi_RT:x24 | N/A | boi_SE:x73 |
| 23.3 | Customers who executed a transaction with virtual asset service providers/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x81 | boi_RT:x24 | N/A | boi_SE:x73 |
| 24.2 | Prepaid cards/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x88 | boi_RT:x24 | N/A | boi_SE:x73 |
| 24.3 | Prepaid cards/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x88 | boi_RT:x24 | N/A | boi_SE:x73 |
| 25.2 | Customers with existing and developing significant focal points of risk/Total number of customers at high risk with regard to compliance | boi_met:id89 | xbrli:integerItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x84 | boi_RT:x24 | N/A | boi_SE:x73 |
| 25.3 | Customers with existing and developing significant focal points of risk/Share of customers at high risk with regard to compliance | boi_met:pi1312 | num:percentItemType | instant | boi_CS:x1 | boi_GA:x1 | boi_RT:x84 | boi_RT:x24 | N/A | boi_SE:x73 |