v3.26.3
Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance $ 750.7 $ 725.1 $ 746.0 $ 719.9
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (0.6) 1.0 (1.6) 5.0
Ending Balance 791.6 725.1 791.6 725.1
Net change in unrealized losses on available-for-sale debt securities (note 8) 0.0 0.0 (0.1) 0.0
Available-for-Sale Debt Securities        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance (0.1) 0.0 0.0 0.0
Ending Balance (0.1) 0.0 (0.1) 0.0
Cash Flow Hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance (0.2) 0.5 0.3 (1.9)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax (0.3) (0.1) (0.8) 1.9
Amounts reclassified from AOCL into net income 0.4 (0.1) 0.4 0.3
Ending Balance (0.1) 0.3 (0.1) 0.3
Foreign Currency Cumulative Translation Adjustment        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning Balance (11.9) (12.7) (10.9) (16.7)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (0.6) 1.0 (1.6) 5.0
Ending Balance (12.5) (11.7) (12.5) (11.7)
Other Post-Employment Benefit Obligations        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Ending Balance (0.6) (0.6) (0.6) (0.6)
AOCI Attributable to Parent        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Ending Balance $ (13.3) $ (12.0) $ (13.3) $ (12.0)