Revenue and Segment Disclosures - Operating results by operating segments (Details) $ in Millions	12 Months Ended
Feb. 28, 2026 USD ($) Reportable_segment	Feb. 28, 2025 USD ($)	Feb. 29, 2024 USD ($)
Segment Reporting [Line Items]
Revenues	$ 549.1	$ 534.9	$ 759.1
Cost of Revenue	130.9	140.0	268.4
Gross Profit	$ 418.2	394.9	490.7
Number of Reportable Segments \| Reportable_segment	3
QNX
Segment Reporting [Line Items]
Revenues	$ 268.0	236.0	215.4
Cost of Revenue	45.4	38.8	33.8
Segment gross margin	222.6	197.2
Gross Profit			181.6
Secure Communications
Segment Reporting [Line Items]
Revenues	258.9	272.6	283.8
Cost of Revenue	77.2	92.7	80.7
Gross Profit	181.7	179.9	203.1
Licensing
Segment Reporting [Line Items]
Revenues	22.2	26.3	259.9
Cost of Revenue	6.1	6.1	150.9
Segment gross margin		20.2	109.0
Gross Profit	16.1
Operating Segments
Segment Reporting [Line Items]
Revenues	549.1	534.9	759.1
Segment gross margin	$ 420.4	$ 397.3	$ 493.7

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