Income taxes - Summary of Income (Loss) Before Income Taxes and the Provision for Current and Deferred Income Taxes Attributable (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
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Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Disclosure Of Profit Loss Before Tax And Major Components Of Tax Expense Income [Abstract] | |||
| Income (loss) before income taxes: | ¥ 1,422,374 | ¥ 1,343,198 | ¥ 1,095,086 |
| Income tax expenses | |||
| Current | 326,555 | 275,376 | 255,375 |
| Deferred | 40,553 | (17,896) | (16,270) |
| Income tax expense, Total | ¥ 367,108 | ¥ 257,480 | ¥ 239,105 |
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Disclosure of profit loss before tax and major components of tax expense income. No definition available.
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