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Leases (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Option
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Lessee, Lease, Description [Line Items]      
Variable lease expense and short-term lease expenses $ 7.7 $ 8.4  
Weighted average discount rate 4.20% 3.90%  
Lease expense $ 28.2 $ 24.8 $ 23.4
Weighted average remaining lease term 7 years 6 months 8 years 1 month 6 days  
Rent paid to related parties $ 4.2 $ 3.7 $ 4.8
Minimum      
Lessee, Lease, Description [Line Items]      
Lease term 3 years    
Number of options to renew | Option 1    
Maximum      
Lessee, Lease, Description [Line Items]      
Lease term 10 years