XML 85 R69.htm IDEA: XBRL DOCUMENT v3.20.4
Retirement Plans (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
plan
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Defined Benefit Plan Disclosure [Line Items]      
Employer matching contribution percent 7.00% 7.00% 7.00%
United States      
Defined Benefit Plan Disclosure [Line Items]      
Entity's contribution to retirement plans as percentage of employees' compensation 3.00%    
Cost of defined contribution plans $ 17.7 $ 16.8 $ 15.8
Canada      
Defined Benefit Plan Disclosure [Line Items]      
Number of defined contribution retirement plans | plan 5    
Switzerland      
Defined Benefit Plan Disclosure [Line Items]      
Contributions to pension funds $ 5.1 $ 4.5 $ 4.5
Minimum | Canada      
Defined Benefit Plan Disclosure [Line Items]      
Entity's contribution to retirement plans as percentage of employees' compensation 3.00%    
Maximum | Canada      
Defined Benefit Plan Disclosure [Line Items]      
Entity's contribution to retirement plans as percentage of employees' compensation 15.00%