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Summary of Significant Accounting Policies (Narrative) (Details)
$ in Millions
 12 Months Ended
Mar. 31, 2025
USD ($)
reporting_unit
performanceObligation
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Revenue Recognition      
Sales contract with customer term (in years) 1 year    
Number of performance obligations | performanceObligation 2    
Service period of deferred revenue 5 years    
Advertising Costs      
Advertising costs $ 355.1 $ 325.3 $ 383.7
Leases      
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Other assets Other assets  
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Accrued and other current liabilities Accrued and other current liabilities  
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Other Liabilities, Noncurrent Other Liabilities, Noncurrent  
Impairment of Goodwill      
Number of reporting units | reporting_unit 1    
Plant and buildings      
Property, Plant and Equipment      
Estimated useful life (in years) 25 years    
Operating expense      
Advertising Costs      
Advertising costs $ 53.1 $ 46.6 $ 67.3
Minimum      
Revenue Recognition      
Required customer payment period (in days) 30 days    
Intangible Assets      
Estimated useful life (in years) 1 year    
Product Warranties      
Product warranty period (in years) 1 year    
Minimum | Equipment      
Property, Plant and Equipment      
Estimated useful life (in years) 3 years    
Minimum | Internal-use software      
Property, Plant and Equipment      
Estimated useful life (in years) 3 years    
Minimum | Tooling      
Property, Plant and Equipment      
Estimated useful life (in years) 6 months    
Maximum      
Revenue Recognition      
Required customer payment period (in days) 60 days    
Intangible Assets      
Estimated useful life (in years) 10 years    
Product Warranties      
Product warranty period (in years) 3 years    
Maximum | Equipment      
Property, Plant and Equipment      
Estimated useful life (in years) 5 years    
Maximum | Internal-use software      
Property, Plant and Equipment      
Estimated useful life (in years) 7 years    
Maximum | Tooling      
Property, Plant and Equipment      
Estimated useful life (in years) 1 year