Material accounting policies - Summary of New accounting standards and interpretations not yet adopted (Detail) |
12 Months Ended |
|---|---|
Mar. 31, 2025 | |
| Text block 1 [Abstract] | |
| Standards | IFRS 18 |
| Mandatory adoption date ((from fiscal years beginning on or after) | Jan. 01, 2027 |
| Reporting periods in which Toyota is scheduled to adopt the standards | Mar. 31, 2028 |
| Overview of new or amended standards and interpretations | Improved comparability in the statement of profit or loss (income statement) Enhanced transparency of management-defined performance measures More useful grouping of information in the financial statements |