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Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]    
ROU asset $ (19.0)  
ROU asset calculation, above and below market leasehold interest balance   $ 66.5
Rental and other revenues from operating lease payments 686.2  
Variable lease payments $ 154.3  
Minimum    
Lessee, Lease, Description [Line Items]    
Extended lease term 1 year  
Maximum    
Lessee, Lease, Description [Line Items]    
Extended lease term 10 years  
Term of lease contracts 99 years