v3.26.1
Benefit Plans (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Defined Benefit Plan Disclosure [Line Items]      
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 50,200 $ 44,700 $ 39,600
Defined Contribution Plan, Fair Value of Plan Assets $ 1,608,000    
STERIS Corporation shares held in defined contribution plan 300,000    
Fair value of STERIS Corporatio stock held in defined contribution plan $ 74,100    
Defined Contribution Plan, Dividends Paid 800 900 $ 900
Deferred Compensation Plan Assets $ 1,300 $ 1,100  
Debt Securities      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage 70.00%