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Leases (Details 3) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Capital Leases    
2016, Capital Leases $ 1.6  
2017, Capital Leases 11.6  
2018, Capital Leases 0.0  
2019, Capital Leases 0.0  
2020, Capital Leases 0.0  
Years thereafter, Capital Leases 0.0  
Capital Leases, Future Minimum Payments Due, Total 13.2  
Less: amounts representing interest (0.7)  
Present value of future minimum capital lease payments 12.5 $ 14.9
Recourse Operating Leases [Member]    
Operating Leases    
2016, Operating Lease 90.6  
2017, Operating Lease 68.7  
2018, Operating Lease 67.4  
2019, Operating Lease 61.3  
2020, Operating Lease 52.9  
Years thereafter, Operating Leases 273.7  
Total, Operating Leases $ 614.6