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Derivative Instruments and Hedging - Narrative (Details)
In Millions, unless otherwise specified
6 Months Ended 12 Months Ended 6 Months Ended
Jun. 29, 2013
USD ($)
Dec. 31, 2012
USD ($)
Jun. 29, 2013
JPY (¥)
Jun. 29, 2013
Forward Contracts
USD ($)
Jun. 29, 2013
Forward Contracts
JPY (¥)
Jun. 29, 2013
Foreign Buy-forward Contract
contract
Jun. 29, 2013
Foreign Sell-forward Contract
contract
Jun. 29, 2013
Cash Flow Hedging
Derivative [Line Items]                
Derivative, Term of Contract               9 months
Cash Flow Hedge, Amount Excluded from Effectiveness Testing   $ 0.1            
Notional Amount of Cash Flow Hedge Instruments     179.0          
Foreign Currency Cash Flow Hedge Asset at Fair Value 2.2              
Cash Flow Hedge Gain Reclassified to Revenue 0.1              
Number of Foreign Currency Derivatives Held           1 1  
Notional Amount of Foreign Currency Derivative Purchase Contracts       0.7 67.4      
Notional Amount of Foreign Currency Derivative Sale Contracts       $ 0.3 ¥ 27.3