Income Taxes - Schedule of unrecognized tax benefits (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Income Tax Disclosure [Abstract] | |||
| Balance at beginning of year | ¥ 48,462 | ¥ 41,437 | ¥ 34,763 |
| Increases based on tax positions related to the current period | 8,551 | 6,791 | 5,076 |
| Increases based on tax positions related to the prior periods | 17 | 866 | 608 |
| Decreases related to lapse of the applicable statute of limitations | (1,957) | (3,812) | |
| Exchange rate fluctuations | 3,433 | (632) | 4,802 |
| Balance at end of year | ¥ 58,506 | ¥ 48,462 | ¥ 41,437 |
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- Definition Unrecognized tax benefits increases decreases resulting from foreign currency translation. No definition available.
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- References No definition available.
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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