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Intangible Assets And Goodwill (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 0 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Dec. 31, 2013
Dec. 31, 2013
Acquired Communications Software Provider [Member]
Mar. 29, 2014
Acquired Communications Software Provider [Member]
Business Acquisition [Line Items]              
Gross purchase price           $ 48  
Goodwill 383   383   361   22
Identifiable intangible assets recognized             20
Intangible Assets And Goodwill              
Amortization expense on intangibles 1 0 2 0      
Finite-Lived Intangible Assets, Future Amortization Expense              
2014 4   4        
2015 4   4        
2016 4   4        
2017 3   3        
2018 $ 3   $ 3