Trading Account Profits and Losses (Net Trading Gains (Losses)) (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Trading Account Profits And Losses [Abstract] | |||
| Interest rate and other derivative contracts | ¥ (1,703,103) | ¥ (95,783) | ¥ (951,913) |
| Trading account securities, excluding derivatives | 1,052,530 | 128,045 | 248,000 |
| Trading account profits (losses)—net | (650,573) | 32,262 | (703,913) |
| Foreign exchange derivative contracts | (760,095) | 446,992 | (410,656) |
| Net trading profits (losses) | ¥ (1,410,668) | ¥ 479,254 | ¥ (1,114,569) |
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- Definition The aggregate net gains and losses for foreign exchange derivative contracts held for trading, which are included in determining net income for the reporting period. No definition available.
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- Definition Aggregate net gains and losses on all derivative instruments held for trading purposes whether or not settled physically, excluding foreign exchange derivative contracts. No definition available.
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- Definition Trading Account Profits And Losses [Abstract] No definition available.
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- Definition Amount of net gains and losses on trading account. Includes trading account profits and losses of trading account securities and trading derivative assets and liabilities, which exclude foreign exchange derivative contracts that are included in "Foreign exchange gains (losses)-net". No definition available.
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- Definition Aggregate net gains and losses on trading securities, which include foreign currency-denominated debt securities such as foreign government or official institution bonds, corporate bonds, and mortgage-backed securities, excluding derivatives. No definition available.
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- Definition Amount of gain (loss) resulting from the difference between the acquisition price and the selling price or fair value of trading assets and trading liabilities, conducted separately from customer trading activities. Includes, but is not limited to, changes in fair value of trading assets and trading liabilities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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