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Post Employment Plans - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
year
Dec. 31, 2019
USD ($)
Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Amount to be amortized from accumulated other comprehensive income (loss) next fiscal year $ 1.0    
Expected future benefit payments, year one through five 14.7    
Estimated future employer contributions in next fiscal year 2.4    
Other Postretirement Benefits Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Expected future benefit payments, year one through five $ 0.8    
Postretirement health coverage      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Retiree eligible age | year 65    
Pension plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Expected return on assets, percent 1.76% 2.54% 2.94%
Deferred compensation arrangement with individual, by type of compensation, pension and Other Postretirement Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Cash surrender value of insurance policies $ 37.3 $ 34.4  
Deferred compensation liability, non-current $ 34.2 $ 31.3  
United States      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer nondiscretionary contribution to plan 3.00%    
Ireland      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Employer matching contribution, percent of employees' gross pay 18.00%