XML 64 R53.htm IDEA: XBRL DOCUMENT v3.19.2
Property and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Property and Equipment [Line Items]    
Property and equipment $ 2,145.1 $ 2,089.2
Less: accumulated depreciation 1,484.7 1,436.3
Property and equipment, net 660.4 652.9
Land    
Property and Equipment [Line Items]    
Property and equipment 97.5 97.5
Buildings    
Property and Equipment [Line Items]    
Property and equipment $ 50.0 48.7
Buildings | Minimum    
Property and Equipment [Line Items]    
Property and equipment, useful life 20 years  
Buildings | Maximum    
Property and Equipment [Line Items]    
Property and equipment, useful life 40 years  
Advertising structures    
Property and Equipment [Line Items]    
Property and equipment $ 1,823.9 1,789.4
Advertising structures | Minimum    
Property and Equipment [Line Items]    
Property and equipment, useful life 5 years  
Advertising structures | Maximum    
Property and Equipment [Line Items]    
Property and equipment, useful life 20 years  
Furniture, equipment and other    
Property and Equipment [Line Items]    
Property and equipment $ 145.1 134.3
Furniture, equipment and other | Minimum    
Property and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Furniture, equipment and other | Maximum    
Property and Equipment [Line Items]    
Property and equipment, useful life 10 years  
Construction in progress    
Property and Equipment [Line Items]    
Property and equipment $ 28.6 $ 19.3