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Employee Benefit Plans (Defined Benefit Plans Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Defined Benefit Plan Disclosure [Line Items]    
Accumulated benefit obligation $ 99.5 $ 92.0
Company's expected contribution to defined benefit pension plans in next fiscal year $ 4.9  
Swiss defined benefit pension plan | Minimum | Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 20.00%  
Swiss defined benefit pension plan | Minimum | Bonds    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 25.00%  
Swiss defined benefit pension plan | Minimum | Cash and Cash Equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 0.00%  
Swiss defined benefit pension plan | Maximum | Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 55.00%  
Swiss defined benefit pension plan | Maximum | Bonds    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 65.00%  
Swiss defined benefit pension plan | Maximum | Cash and Cash Equivalents    
Defined Benefit Plan Disclosure [Line Items]    
Target plan asset allocations 20.00%