Leases - Additional Information (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | |
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Mar. 31, 2026 |
Mar. 31, 2024 |
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| Schedule of Operating Leases [Line Items] | ||
| Lease receivable of net investment expiration period | 23 years | |
| Remaining expiration period | 55 years | |
| Sale and leaseback transaction, gain (loss), net | ¥ 2,661 | |
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- Definition Lease receivable of net investment expiration period. No definition available.
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- Definition Remaining expiration period. No definition available.
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- Definition Schedule of Operating Leases [Line Items] No definition available.
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- Definition Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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