Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details) (Narratives)

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Income Taxes (Details) (Narratives) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Income Taxes [Line Items]    
Provision (benefit) for income taxes $ 2 $ 2
Increase in gross unrecognized tax benefits 1  
Gross unrecognized tax benefits 53  
Unrecognized tax benefits, period increase (decrease) (2)  
Unrecognized tax benefits, decrease resulting from current period tax positions 2  
Unrecognized tax benefits, estimated increase (decrease) over the next 12 months (31)  
Foreign Taxes in Profitable Locations
   
Income Taxes [Line Items]    
Provision (benefit) for income taxes 2 2
Other Comprehensive Income (Loss)
   
Income Taxes [Line Items]    
Provision (benefit) for income taxes   1
Tax Benefits for Canadian Coop Tax Credits
   
Income Taxes [Line Items]    
Provision (benefit) for income taxes   $ (1)