Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Nov. 30, 2022	Aug. 31, 2022	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2023
Results of Arbitrations and Legal Proceedings [Line Items]
Payments for Legal Settlements	$ 164.0	$ 1.0
Litigation settlement			$ 2.8	$ 0.0	$ 165.0
Litigation Settlement, Fee Expense - CAD Currency			$ 4.0

Litigation Settlement, Fee Expense - CAD Currency

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

[Line Items] for Results of Arbitrations and Legal Proceedings [Table]

+ References

No definition available.

+ Details

Name:	bbry_ResultsofArbitrationsandLegalProceedingsLineItems
Namespace Prefix:	bbry_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(6))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-25

+ Details

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Balance Type:	credit
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