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Leasing Arrangements (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Leases [Abstract]      
Rent expense $ 27.1 $ 30.4 $ 24.5
2016 21.0    
2017 17.2    
2018 12.2    
2019 8.3    
2020 6.8    
Thereafter 19.1    
Total $ 84.6