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Share-Based Compensation Plans And Other Incentive Plans (Narrative) (Details) (Employee Stock [Member])
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Employee Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Maximum purchase percentage of eligible compensation (in percent) 20.00% 10.00%
Maximum number of stock that can be purchased in any calender year 25,000