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Commitments and Contingencies - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2018
Dec. 31, 2017
Guarantor Obligations [Line Items]          
Accrued estimated carrying charges   $ 15.2      
Long-term debt $ 1,683.9 2,127.3      
Income taxes payable   250.6      
Unrecognized tax benefits 151.3 116.0   $ 178.1 $ 264.5
Indemnification Agreement          
Guarantor Obligations [Line Items]          
Guarantor obligations, current carrying value 9.0 6.7      
Financing guarantees, bank guarantees, and standby letters of credit          
Guarantor Obligations [Line Items]          
Guarantor obligations, current carrying value $ 30.6 29.0      
Master Service Agreement          
Guarantor Obligations [Line Items]          
Expected payment   183.3 $ 79.4    
Energy Services Agreement          
Guarantor Obligations [Line Items]          
Expected payment   $ 29.0      
Energy services agreement duration 15 years        
Facilities | Minimum          
Guarantor Obligations [Line Items]          
Lease term   1 year      
Facilities | Maximum          
Guarantor Obligations [Line Items]          
Lease term   10 years      
Equipment | Minimum          
Guarantor Obligations [Line Items]          
Lease term   1 year      
Equipment | Maximum          
Guarantor Obligations [Line Items]          
Lease term   4 years      
Long-term Income Taxes          
Guarantor Obligations [Line Items]          
Unrecognized tax benefits   $ 61.9