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Leases - Future Minimum Payments (Details) - USD ($)
$ in Millions
Jan. 01, 2020
Dec. 31, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
Next 12 months   $ 8.7
12 to 24 months   5.6
24 to 36 months   4.6
36 to 48 months   4.3
48 to 60 months   3.9
Thereafter   1.5
Total lease payments   28.6
Less imputed interest   3.1
Net lease liability   25.5
Finance Lease, Liability, Payment, Due [Abstract]    
Next 12 months   1.0
12 to 24 months   0.8
24 to 36 months   0.5
36 to 48 months   0.3
48 to 60 months   0.1
Thereafter   0.1
Total lease payments   2.8
Less imputed interest   0.1
Capital lease obligations   2.7
Next 12 months   9.7
12 to 24 months   6.4
24 to 36 months   5.1
36 to 48 months   4.6
48 to 60 months   4.0
Thereafter   1.6
Total lease payments   31.4
Less imputed interest   3.2
Total   28.2
Lessee, Lease, Description [Line Items]    
Payments due on leases executed after period end   $ 28.6
Subsequent Event    
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
Total lease payments $ 17.8  
Lessee, Lease, Description [Line Items]    
Payments due on leases executed after period end $ 17.8