Property, Plant and Equipment - Narrative (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Disclosure of detailed information about property, plant and equipment [abstract] | |||
| Cash outflow for leases | ¥ 69,685 | ¥ 75,412 | ¥ 59,981 |
| Future cash outflow for leases not yet commenced | ¥ 221,192 | ||