Leases - Lessor: Lease Income (Parenthetical) (Detail) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Lessor, Lease, Description [Line Items] | |||
| Gain (loss) on sale of leased assets, net, operating leases | ¥ 70,115 | ¥ 76,633 | ¥ 53,441 |
| Real estate asset [member] | |||
| Lessor, Lease, Description [Line Items] | |||
| Gain (loss) on sale of leased assets, net, operating leases | 20,689 | 31,965 | 20,960 |
| Operating lease assets other than real estate [member] | |||
| Lessor, Lease, Description [Line Items] | |||
| Gain (loss) on sale of leased assets, net, operating leases | ¥ 49,426 | ¥ 44,668 | ¥ 32,481 |