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Stock-Based Compensation (Summary And Stock Options) (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Apr. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Net stock-based expense (income) $ 8.7 $ 5.9
Cash received from option exercises 13.3 11.8
Tax benefit realized from exercise of share-based payment 3.6 2.2
2011 Incentive Stock And Awards Plan [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares available for future grants 3,952,298  
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average contractual term (in years) 10  
Weighted-average grant date fair value $ 15.46 $ 15.80
Aggregate intrinsic value exercised 6.7 5.7
Fair value of stock options vested 5.6 4.4
Unrecognized compensation cost related to non-vested award $ 16.1  
Cost expected to be recognized over weighted-average period, in years 2.3