Related-Party Transactions - Transactions with Key Management Personnel and Their Close Family Members (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2024	Mar. 31, 2023
Assets:
Loans and advances	¥ 121,716,465	¥ 111,891,134
Liabilities:
Deposits	182,097,319	172,927,810
Others	11,025,782	8,703,413
Key management personnel of entity or parent [member]
Assets:
Loans and advances	573	44
Liabilities:
Deposits	2,959	2,865
Others	¥ 116	¥ 129

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- Definition

The amount of deposit liabilities from customers held by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of loans and advances the entity has made to customers.

+ References

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- Definition

The amount of liabilities that the entity does not separately disclose in the same statement or note.

+ References

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