Provisions - Narrative (Details) - JPY (¥) ¥ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2027 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure of other provisions [line items] | ||||
| Expense of restructuring activities | ¥ 62,783 | ¥ 123,584 | ¥ 73,835 | |
| Rebates payable | 291,232 | 241,704 | ||
| Forecast | ||||
| Disclosure of other provisions [line items] | ||||
| Expense of restructuring activities | ¥ 170,000 | |||
| Personnel costs | ||||
| Disclosure of other provisions [line items] | ||||
| Expense of restructuring activities | ¥ 9,550 | ¥ 16,353 | ¥ 9,769 | |