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Leases - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Lessee Lease Description [Line Items]        
Lease obligations for additional leases not yet commenced $ 43.6   $ 43.6  
Operating leases not yet commenced, start year     2021  
Operating leases not yet commenced, end year     2022  
Operating lease liabilities 19.1 $ 18.3 $ 54.1 $ 56.6
Lease liabilities arising from obtaining operating lease right-of-use assets $ 8.4   $ 56.1 $ 24.0
Minimum        
Lessee Lease Description [Line Items]        
Operating leases, terms 1 year   1 year  
Maximum        
Lessee Lease Description [Line Items]        
Operating leases, terms 5 years   5 years