Blackberry Limited and Summary of Significant Accounting Policies and Critical Accounting Estimates - Vesting Scenarios (Details)	12 Months Ended
Feb. 29, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
RSUs vesting period	3 years

Description of the period of time over which an employee's right to exercise an RSU award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, and is expressed in years.

No definition available.

Name:	bbry_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanStockOptionsAwardVestingPeriod
Namespace Prefix:	bbry_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration