| Line Item | Apr 30, 2026 | Jan 31, 2026 | Oct 31, 2025 | Jul 31, 2025 | Apr 30, 2025 | Jan 31, 2025 | Oct 31, 2024 | Jul 31, 2024 | Apr 30, 2024 | Jan 31, 2024 | Oct 31, 2023 | Jul 31, 2023 | Apr 30, 2023 | Jan 31, 2023 | Oct 31, 2022 | Jul 31, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating Expenses: | ||||||||||||||||
| Research and Development Expense | ||||||||||||||||
| Selling, General and Administrative Expense | ||||||||||||||||
| Total operating expenses | ||||||||||||||||
| Operating loss | ||||||||||||||||
| Non-Operating Income (Expense) | ||||||||||||||||
| Change in fair value of the warrant liability | ||||||||||||||||
| Income from Equity Method Investments | ||||||||||||||||
| Net loss for the period | ||||||||||||||||
| Net Income Attributable to Noncontrolling Interest | ||||||||||||||||
| Net loss and Comprehensive loss for the period attributable to BriaCell | ||||||||||||||||
| Earnings Per Share (Basic) | — | |||||||||||||||
| Earnings Per Share (Diluted) | — |