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Consolidated Balance Sheets Detail - Intangible Assets (Details) - USD ($)
$ in Millions
 9 Months Ended
Nov. 30, 2025
Nov. 30, 2024
Feb. 28, 2025
Finite-Lived Intangible Assets [Line Items]      
Cost $ 176.3   $ 180.6
Accumulated Amortization 135.6   133.3
Net Book Value 40.7   47.3
Amortization expenses related to intangible assets 10.2 $ 12.6  
Payments to Acquire Intangible Assets 4.0 $ 5.7  
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]      
2026 2.1    
2027 7.0    
2028 6.0    
2029 4.9    
2030 4.2    
2031 3.6    
Acquired technology      
Finite-Lived Intangible Assets [Line Items]      
Cost 29.8   29.8
Accumulated Amortization 29.8   29.1
Net Book Value 0.0   0.7
Other acquired intangibles      
Finite-Lived Intangible Assets [Line Items]      
Cost 40.4   40.4
Accumulated Amortization 40.4   38.0
Net Book Value 0.0   2.4
Intellectual property      
Finite-Lived Intangible Assets [Line Items]      
Cost 106.1   110.4
Accumulated Amortization 65.4   66.2
Net Book Value $ 40.7   $ 44.2