| r0.3 | label_boi_a2/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| r0.1 | label_boi_a2/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | N/A | N/A |
| r0.2 | label_boi_a2/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | boi_RP:x20 | N/A |
| r0.4 | label_boi_a2/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| r1.3 | Credit risk not guaranteed by banks/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| r1.1 | Credit risk not guaranteed by banks/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | N/A | N/A |
| r1.2 | Credit risk not guaranteed by banks/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | boi_RP:x20 | N/A |
| r1.4 | Credit risk not guaranteed by banks/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| r2.3 | Private individuals1/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| r2.1 | Private individuals1/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x15 |
| r2.2 | Private individuals1/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x15 |
| r2.4 | Private individuals1/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 1.3 | Private individuals/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 1.1 | Private individuals/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x15 |
| 1.2 | Private individuals/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x15 |
| 1.4 | Private individuals/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 2.3 | Of which: Receivables in respect of credit cards/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 2.1 | Of which: Receivables in respect of credit cards/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x15 |
| 2.2 | Of which: Receivables in respect of credit cards/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x15 |
| 2.4 | Of which: Receivables in respect of credit cards/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 3.3 | Of which: Credit/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 3.1 | Of which: Credit/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x15 |
| 3.2 | Of which: Credit/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x15 |
| 3.4 | Of which: Credit/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x880 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 4.3 | Amount of credit incl. credit with vehicle as collateral/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| 4.1 | Amount of credit incl. credit with vehicle as collateral/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | N/A | boi_SE:x15 |
| 4.2 | Amount of credit incl. credit with vehicle as collateral/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x15 |
| 4.4 | Amount of credit incl. credit with vehicle as collateral/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x15 |
| r7.3 | Commercial/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| r7.1 | Commercial/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | N/A | N/A |
| r7.2 | Commercial/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | boi_RP:x20 | N/A |
| r7.4 | Commercial/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | N/A | N/A | N/A | boi_RP:x24 | N/A | N/A |
| 5.3 | Commercial/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 5.1 | Commercial/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x87 |
| 5.2 | Commercial/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x87 |
| 5.4 | Commercial/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 6.3 | Of which: Receivables in respect of credit cards2/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 6.1 | Of which: Receivables in respect of credit cards2/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x87 |
| 6.2 | Of which: Receivables in respect of credit cards2/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x87 |
| 6.4 | Of which: Receivables in respect of credit cards2/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 7.3 | Of which: Credit/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 7.1 | Of which: Credit/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x87 |
| 7.2 | Of which: Credit/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x87 |
| 7.4 | Of which: Credit/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x880 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 8.3 | Amount of credit incl. credit with vehicle as collateral/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 8.1 | Amount of credit incl. credit with vehicle as collateral/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | N/A | boi_SE:x87 |
| 8.2 | Amount of credit incl. credit with vehicle as collateral/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x87 |
| 8.4 | Amount of credit incl. credit with vehicle as collateral/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x87 |
| 9.3 | Of which: Credit to businesses/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 9.1 | Of which: Credit to businesses/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | N/A | boi_SE:x88 |
| 9.2 | Of which: Credit to businesses/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x880 | boi_MC:x828 | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x88 |
| 9.4 | Of which: Credit to businesses/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x880 | boi_MC:x828 | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 10.3 | Amount of credit to businesses incl. advances to businesses/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x586 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 10.1 | Amount of credit to businesses incl. advances to businesses/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x586 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x88 |
| 10.2 | Amount of credit to businesses incl. advances to businesses/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x586 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x88 |
| 10.4 | Amount of credit to businesses incl. advances to businesses/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x586 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 11.3 | Amount of credit to businesses incl. discounting of vouchers for businesses/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x587 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 11.1 | Amount of credit to businesses incl. discounting of vouchers for businesses/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x587 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x88 |
| 11.2 | Amount of credit to businesses incl. discounting of vouchers for businesses/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x587 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x88 |
| 11.4 | Amount of credit to businesses incl. discounting of vouchers for businesses/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x587 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x88 |
| 12.3 | Total credit risk not guaranteed by banks/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 12.1 | Total credit risk not guaranteed by banks/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 12.2 | Total credit risk not guaranteed by banks/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 12.4 | Total credit risk not guaranteed by banks/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x2 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| r16.3 | Credit risk guaranteed by banks and others:/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | N/A | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| r16.1 | Credit risk guaranteed by banks and others:/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| r16.2 | Credit risk guaranteed by banks and others:/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | N/A | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| r16.4 | Credit risk guaranteed by banks and others:/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | N/A | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 13.3 | Receivables in respect of credit cards/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 13.1 | Receivables in respect of credit cards/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 13.2 | Receivables in respect of credit cards/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x143 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 13.4 | Receivables in respect of credit cards/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x143 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 14.3 | Credit/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x881 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 14.1 | Credit/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x881 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 14.2 | Credit/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x881 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 14.4 | Credit/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x881 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 15.3 | International credit card companies and organizations/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x862 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 15.1 | International credit card companies and organizations/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x862 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 15.2 | International credit card companies and organizations/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x862 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 15.4 | International credit card companies and organizations/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x862 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 16.3 | Held companies (in consolidated - included)/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x882 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 16.1 | Held companies (in consolidated - included)/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x882 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 16.2 | Held companies (in consolidated - included)/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x882 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 16.4 | Held companies (in consolidated - included)/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x882 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 17.3 | Income receivable/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x883 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 17.1 | Income receivable/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x883 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 17.2 | Income receivable/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x883 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 17.4 | Income receivable/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x883 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 18.3 | Other/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x884 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 18.1 | Other/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x884 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 18.2 | Other/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x884 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 18.4 | Other/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x884 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 19.3 | Total Credit risk guaranteed by banks and others/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 19.1 | Total Credit risk guaranteed by banks and others/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 19.2 | Total Credit risk guaranteed by banks and others/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 19.4 | Total Credit risk guaranteed by banks and others/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x40 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 20.3 | Total receivables in respect of credit card activity/Consolidated | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |
| 20.1 | Total receivables in respect of credit card activity/Balance for date | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | N/A | boi_SE:x89 |
| 20.2 | Total receivables in respect of credit card activity/For transactions in past month | boi_met:pd90 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CS:x2 | boi_MC:x8 | N/A | boi_MU:x1 | N/A | boi_RP:x20 | boi_SE:x89 |
| 20.4 | Total receivables in respect of credit card activity/Company | boi_met:mi2 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_RP:x24 | N/A | boi_SE:x89 |