Other assets - Office buildings, land, equipment and facilities and Other / Other liabilities - Schedule of Other assets-Other and Other liabilities (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|
| Other assets—Other: | ||||||||||
| Securities received as collateral | ¥ 504,843 | ¥ 382,780 | ||||||||
| Goodwill and other intangible assets | 315,379 | 73,345 | ||||||||
| Net deferred tax assets | [1] | 41,778 | 25,224 | |||||||
| Investments in equity securities for other than operating purposes | [2] | 386,473 | 302,973 | |||||||
| Deposit receivables | [3] | 206,563 | 214,587 | |||||||
| Prepaid expenses | 34,097 | 28,003 | ||||||||
| Other | 109,324 | 97,561 | ||||||||
| Total, Other assets-Other | 1,598,457 | 1,124,473 | ||||||||
| Other liabilities: | ||||||||||
| Obligation to return securities received as collateral | 504,843 | 382,780 | ||||||||
| Accrued income taxes | 105,154 | 88,424 | ||||||||
| Net deferred tax liabilities | [1] | 146,706 | 113,820 | |||||||
| Other accrued expenses and provisions | [4] | 700,592 | 551,064 | |||||||
| Operating lease liabilities | 156,279 | 174,132 | ||||||||
| Other | 200,061 | 146,378 | ||||||||
| Total, Other liabilities | ¥ 1,813,635 | ¥ 1,456,598 | ||||||||
| Operating Lease, Liability, Statement of Financial Position [Extensible List] | Operating lease liabilities | Operating lease liabilities | ||||||||
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