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Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]    
Loans Payable to Bank, Current $ 2.4 $ 2.1
Loans Payable to Bank, Noncurrent 0.6 1.1
Capital Lease Obligations, Current 0.6 0.6
Capital Lease Obligations, Noncurrent 8.5 8.5
Other Long-term Debt, Current 13.1 6.1
Other Long-term Debt, Noncurrent 0.0 7.0
Long-term Debt and Capital Lease Obligations, Current 42.9 35.6
Long-term Debt and Capital Lease Obligations 1,083.4 1,097.6
Secured Debt Term A [Member]    
Debt Disclosure [Abstract]    
Secured Debt, Current 26.8 26.8
Secured Long-term Debt, Noncurrent 474.8 481.5
Senior Unsecured Notes Due 2020 [Member]    
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]    
Senior Notes, Current 0.0 0.0
Senior Notes, Noncurrent 300.0 300.0
Senior unsecured notes due 2022 [Member]    
Long Term Debt And Capital Lease Obligations Current And Non Current [Abstract]    
Senior Notes, Current 0.0 0.0
Senior Notes, Noncurrent $ 299.5 $ 299.5