Consolidated Balance Sheets Detail - Property, Plant and Equipment (Details) - USD ($) $ in Millions |
Aug. 31, 2026 |
Feb. 28, 2026 |
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| Property, Plant, and Equipment [Line Items] | ||
| Cost of property, plant and equipment | $ 99.4 | $ 98.2 |
| Accumulated amortization | 87.2 | 85.9 |
| Net book value | 12.2 | 12.3 |
| BlackBerry operations and other information technology | ||
| Property, Plant, and Equipment [Line Items] | ||
| Cost of property, plant and equipment | 79.1 | 78.0 |
| Leasehold improvements and other | ||
| Property, Plant, and Equipment [Line Items] | ||
| Cost of property, plant and equipment | 13.2 | 12.9 |
| Furniture and Fixtures [Member] | ||
| Property, Plant, and Equipment [Line Items] | ||
| Cost of property, plant and equipment | 4.4 | 4.8 |
| Research and development equipment | ||
| Property, Plant, and Equipment [Line Items] | ||
| Cost of property, plant and equipment | $ 2.7 | $ 2.5 |
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- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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