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Fixed Assets and Lease Commitments - Schedule of Aggregate Future Minimum Payments for Operating Leases (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Operating Leased Assets [Line Items]      
2017 [1] $ 37.7    
2018 [1] 34.7    
2019 [1] 31.7    
2020 [1] 30.0    
2021 [1] 27.4    
Thereafter [1] 57.4    
Consolidated rent expense 35.5 $ 36.3 $ 30.5
Majority Shareholder      
Operating Leased Assets [Line Items]      
2017 11.5    
2018 11.4    
2019 10.8    
2020 10.0    
2021 9.3    
Thereafter $ 29.3    
[1] The controlling interest portion is $11.5 million through 2017, $11.4 million in 2018, $10.8 million in 2019, $10.0 million in 2020, $9.3 million in 2021 and $29.3 million thereafter.