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Leases - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Lessee Lease Description [Line Items]      
Lease obligations for additional leases not yet commenced $ 13.5    
Operating leases not yet commenced, start year 2021    
Operating leases not yet commenced, end year 2022    
Lease exit liability     $ 32.1
Net assets capitalized under leases     $ 48.4
Operating lease liabilities $ 73.3 $ 66.3  
Lease liabilities arising from obtaining operating lease right-of-use assets $ 36.2 $ 35.2  
Minimum      
Lessee Lease Description [Line Items]      
Operating leases, terms 1 year    
Maximum      
Lessee Lease Description [Line Items]      
Operating leases, terms 5 years