Revenue and Segment Disclosures - Operating results by operating segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)	Aug. 31, 2024 USD ($) operatingSegment	Aug. 31, 2023 USD ($)
Segment Reporting [Abstract]
Number of Operating Segments | operatingSegment			3
Segment Reporting Information [Line Items]
Revenues	$ 145	$ 132	$ 289	$ 505
Cost of sales	51	47	99	241
Segment gross margin	94	85	190	264
Cybersecurity
Segment Reporting Information [Line Items]
Revenues	87	79	172	172
Cost of sales	39	36	74	73
Segment gross margin	48	43	98	99
IoT
Segment Reporting Information [Line Items]
Revenues	55	49	108	94
Cost of sales	10	8	20	17
Segment gross margin	45	41	88	77
Licensing
Segment Reporting Information [Line Items]
Revenues	3	4	9	239
Cost of sales	1	2	3	149
Segment gross margin			6
Segment gross margin	2	2		90
Total Operating Segments
Segment Reporting Information [Line Items]
Revenues	145	132	289	505
Cost of sales	50	46	97	239
Segment gross margin	$ 95	$ 86	$ 192	$ 266