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Leases (Tables)
 12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Future operating lease payments under non-cancellable operating leases with an initial term in excess of 12 months as of December 31, 2020 are shown below.
2021$21.7 
202219.3 
202314.7 
202410.6 
20258.5 
Thereafter26.3 
Total future lease payments101.1 
Less: amount of lease payments representing interest8.9 
Present value of future lease payments$92.2 
Short-term lease liability$19.8 
Long-term lease liability72.4 
Present value of future lease payments$92.2