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Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Lessee, Lease, Description [Line Items]      
Operating lease term (up to) 10 years    
Option to extend the leases (up to) 7 years    
Rent expense related to operating leases   $ 309.7 $ 276.2
Rental purchase option asset $ 11.8    
Rental purchase option liability 11.8    
Future minimum lease payments for short-term leases 19.9    
Maximum guaranteed residual value 769.8    
Obligations for operating leases not yet commenced $ 10.3    
Minimum      
Lessee, Lease, Description [Line Items]      
Lease terms of operating leases not yet commenced 1 year    
Maximum      
Lessee, Lease, Description [Line Items]      
Lease terms of operating leases not yet commenced 7 years    
Related Parties      
Lessee, Lease, Description [Line Items]      
Operating lease term (up to) 5 years    
Lease expense $ 16.7 $ 14.0 $ 12.3