| r0.1 | label_boi_a2/Balance | | | | boi_CS:x2 | boi_RP:x24 |
| r1.1 | Credit exposure arising from securitization structures sponsored by the bank or his related entities/Balance | | | | boi_CS:x2 | boi_RP:x24 |
| 1.1 | Maximum amount of credit exposure arising from credit strengthening to securitization structures in the form of guarantees,securities purchased notes,and other reinforcements 2/Balance | boi_met:mi522 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| 2.1 | Obligations to provide liquidity to unutilized securitization structures/Balance | boi_met:mi523 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| 3.1 | Credit exposure arising from securitization 3/Balance | boi_met:mi524 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| r5.1 | Credit exposure arising from securitization structures sponsored by others/Balance | | | | boi_CS:x2 | boi_RP:x24 |
| 4.1 | Maximum amount of credit exposure arising from credit strengthening to securitization structures in the form of guarantees,securities purchased notes,and other reinforcements 2/Balance | boi_met:mi525 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| 5.1 | Obligations to provide liquidity to unutilized securitization structures/Balance | boi_met:mi526 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| 6.1 | Credit exposure arising from securitization 3/Balance | boi_met:mi527 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |
| 7.1 | Total Credit exposure arising from securitization structures/Balance | boi_met:mi528 | xbrli:monetaryItemType | instant | boi_CS:x2 | boi_RP:x24 |