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Leases - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]    
Operating lease right-of-use assets $ 69.5  
Operating lease current liabilities 21.2  
Operating lease noncurrent liabilities $ 50.6  
Accounting Standards Update 2016-02    
Lessee, Lease, Description [Line Items]    
Operating lease right-of-use assets   $ 74.1
Operating lease current liabilities   19.8
Operating lease noncurrent liabilities   $ 54.3
Minimum    
Lessee, Lease, Description [Line Items]    
Leases, remaining lease term (years) 1 year  
Maximum    
Lessee, Lease, Description [Line Items]    
Leases, remaining lease term (years) 10 years