XML 71 R52.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt And Financing - Capital Expenditures/Operating Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]      
Acquisition of property and equipment $ (145.4) $ (103.3) $ (100.6)
Minimum annual rentals 2019 138.4    
Revenue Equipment [Member]      
Debt Instrument [Line Items]      
Operating lease commitment $ 198.5    
Operating lease term 4 years    
Minimum annual rentals 2019 $ 138.4    
Future minimum payments due $ 429.2