Equity and Other Equity Items - Summary of Shareholder's Equity and Short-term and Long-term Debt (Detail) - JPY (¥) ¥ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Statements [Line Items] | ||
| Toyota Motor Corporation shareholder's equity | ¥ 39,918,854 | ¥ 35,924,826 |
| Short-term and long-term debt | ¥ 43,205,469 | ¥ 38,792,879 |