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Derivatives and Financial Instruments - Recorded Amounts and Estimated Fair Values of Long-term Debt and Derivative Financial Instruments (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 27, 2014
Dec. 31, 2013
Derivative [Line Items]    
Total debt $ 2,963.2  
Recorded Amount
   
Derivative [Line Items]    
Variable rate debt 955.6 528.9
Fixed rate debt 2,007.6 2,021.5
Total debt 2,963.2 2,550.4
Fair Value
   
Derivative [Line Items]    
Variable rate debt 955.6 528.9
Fixed rate debt 2,065.8 1,997.5
Total debt 3,021.4 2,526.4
Interest Rate Swap [Member]
   
Derivative [Line Items]    
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) $ (7.2) $ (8.1)