XML 164 R149.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Deposits - Additional Information (Detail) - JPY (¥) ¥ in Millions | Mar. 31, 2024 | Mar. 31, 2023
--- | --- | ---
Deposits [Abstract] |  |
Time deposits, including certificates of deposit issued in amounts of 10 million Yen or more | ¥ 898,321 | ¥ 888,821

X
- References No definition available. + Details
Name: | us-gaap_DepositsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Industry Guide -Number 3 -Section V -Paragraph D-E -Publisher SEC + Details
Name: | us-gaap_TimeDeposits100000OrMore
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant