Income Taxes - Additional Information (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Effective Income Tax Rate Reconciliation [Line Items] | |||
| Statutory income tax rate | 31.50% | 31.50% | 31.50% |
| Net changes in total valuation allowance | ¥ 8,417 | ¥ (3,201) | ¥ 1,759 |
| Net changes in total valuation allowance recognized in earnings due to the utilization of net operating loss carryforwards | (1,877) | (3,380) | (3,660) |
| Increase in valuation allowance | 2,968 | 1,143 | 4,125 |
| Decrease in valuation allowance | 812 | 3,129 | 3,612 |
| Net changes in valuation allowance | 2,156 | ¥ (1,986) | ¥ 513 |
| Net operating loss carryforwards | ¥ 339,611 | ||
| Statutory income tax rate before the revision | 31.00% | ||
| Increase in provision of income taxes | ¥ 6,124 | ||
| Statutory income tax rate after the revision | 31.90% | ||
| Japan national tax [Member] | |||
| Effective Income Tax Rate Reconciliation [Line Items] | |||
| Statutory income tax rate | 25.60% | ||
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- Definition Deferred Tax Assets Valuation Allowance, Decrease No definition available.
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- Definition Deferred Tax Assets Valuation Allowance, Increase No definition available.
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- Definition Deferred Tax Assets Valuation Allowance Increase (Decrease) No definition available.
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- Definition Deferred tax assets valuation allowance increase (decrease) recognized in earnings. No definition available.
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- Definition Increase decrease in effective income tax rate reconciliation at federal statutory income tax rate. No definition available.
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- Definition Increase decrease in effective income tax rate reconciliation for temporary differences at federal statutory income tax rate. No definition available.
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- Definition Increase decrease in provision of income taxes. No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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