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Derivative Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2015
Apr. 30, 2015
Sep. 30, 2012
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2014
Derivative [Line Items]            
Estimated amount of unrealized gains, net of tax, related to interest rate, commodity price and currency rate hedging that will be reclassified from other comprehensive income into earnings       $ (0.6)    
Hedge period, low end of the range (in months)       12 months    
Hedge period, high end of the range (in months)       24 months    
Interest Rate Swap            
Derivative [Line Items]            
Cash received from monetized derivative asset     $ 14.8      
Senior Notes, Due 2020 and Due 2022 | Interest Rate Swap            
Derivative [Line Items]            
Gain (loss) on monetization   $ 0.7        
Senior Notes, Due 2020            
Derivative [Line Items]            
Derivative, liability, notional amount         $ 11.8  
Senior Notes, Due 2020 | Interest Rate Swap            
Derivative [Line Items]            
Derivative, notional amount           $ 75.0
Derivative, liability, notional amount   75.0        
Senior Notes, Due 2022            
Derivative [Line Items]            
Derivative, liability, notional amount         $ 0.7  
Senior Notes, Due 2022 | Interest Rate Swap            
Derivative [Line Items]            
Derivative, notional amount           $ 125.0
Derivative, liability, notional amount $ 80.0 $ 45.0        
Gain (loss) on monetization $ 0.5