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Derivative Financial Instruments - Derivative Financial Instruments (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2016
USD ($)
Jul. 01, 2016
USD ($)
Dec. 31, 2015
USD ($)
May 08, 2013
Equipment
Derivatives, Fair Value [Line Items]        
SH-2G(I) Aircraft Sold | Equipment       10
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion $ 0.3 $ 0.5    
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months   0.8    
Accruals and Payable and Other Long Term Liabilties [Member]        
Derivatives, Fair Value [Line Items]        
Derivative Liability $ 1.2 $ 1.2 $ 0.1  
Interest Rate Swap [Member]        
Derivatives, Fair Value [Line Items]        
Underlying derivative     $ 83.8