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Accrued Liabilities (Accrued Liabilities and Restructuring Accrual) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2012
Apr. 01, 2011
Dec. 31, 2011
Payables and Accruals [Abstract]      
Restructuring charges $ 0.3 $ 5.3  
Warranty accrual $ 11.8   $ 11.5