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Significant Accounting Policies (Details) - Accounting Standards Update 2015-03 - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Corporate Expense    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Amortization of debt issuance costs $ (0.6) $ (0.2)
Interest Expense    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Amortization of debt issuance costs 0.6 $ 0.2
Debt    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred debt issuance costs 5.6  
Other Assets    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Deferred debt issuance costs $ (5.6)