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Consolidated Balance Sheets Detail - Property, Plant and Equipment (Details) - USD ($)
$ in Millions
Aug. 31, 2021
Feb. 28, 2021
Property, Plant and Equipment [Line Items]    
Cost of property, plant and equipment $ 226 $ 259
Accumulated amortization 182 211
Net book value 44 48
Buildings, leasehold improvements and other    
Property, Plant and Equipment [Line Items]    
Cost of property, plant and equipment 53 67
BlackBerry operations and other information technology    
Property, Plant and Equipment [Line Items]    
Cost of property, plant and equipment 93 110
Manufacturing, repair and research and development equipment    
Property, Plant and Equipment [Line Items]    
Cost of property, plant and equipment 71 72
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Cost of property, plant and equipment $ 9 $ 10