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Financial Statement Policies (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Apr. 02, 2011
Dec. 31, 2011
Tax expense of changes in fair value of hedging activities $ 1.5 $ 0.4  
Restricted cash 6.6   5.9
Cash pledged as collateral to secure bank guarantees 1.6   2.1
Weighted average shares issuable under stock-based awards were not included in the diluted EPS calculation 237,000 178,000  
Forecast [Member]
     
Foreign contract derivative net of taxes, gain $ 1.5