Financial Instruments - Schedule of Remaining Lines of Credit Available (Details) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||
| Used | ¥ (564,956) | ¥ (399,578) |
| Total remaining lines of credit available | 823,724 | 803,973 |
| Committed Lines of Credit | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Total | 5,124 | 3,673 |
| Used | 0 | 0 |
| Total remaining lines of credit available | 5,124 | 3,673 |
| Uncommitted Lines of Credit | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Total | 1,024,200 | 910,200 |
| Used | (205,600) | (109,900) |
| Total remaining lines of credit available | ¥ 818,600 | ¥ 800,300 |