Blackberry Limited and Summary of Significant Accounting Policies and Critical Accounting Estimates - Additional Information (Details) |
12 Months Ended |
|---|---|
|
Feb. 28, 2026
Reportable_segment
| |
| Additional Information [Line Items] | |
| Number of Reportable Segments | 3 |
| Liability for uncertain income tax positions, percentage minimum | 50.00% |
| Minimum | |
| Additional Information [Line Items] | |
| Maturity period of long-term investments | 1 year |
| Maximum | |
| Additional Information [Line Items] | |
| Maturity period of cash equivalents | 3 months |
| Maturity period of short-term investments | 1 year |