Leases - Types of lease assets under operating leases (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Operating Lease [Line Items] | ||||
| Cost | ¥ 61,446 | ¥ 2,778 | ||
| Accumulated depreciation | (551) | (127) | ||
| Net carrying amount | 60,895 | 2,651 | ||
| Real estate [Member] | ||||
| Operating Lease [Line Items] | ||||
| Cost | [1] | 10,690 | 21 | |
| Accumulated depreciation | (6) | |||
| Net carrying amount | [1] | 10,684 | 21 | |
| Aircraft [Member] | ||||
| Operating Lease [Line Items] | ||||
| Cost | 50,756 | 2,757 | ||
| Accumulated depreciation | (545) | (127) | ||
| Net carrying amount | ¥ 50,211 | ¥ 2,630 | ||
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- Definition Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount, before accumulated depreciation, of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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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://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount, after accumulated depreciation, of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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