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Restructuring Expenses (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2016
Jul. 03, 2015
Jul. 01, 2016
Jul. 03, 2015
Facility Closing        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 1 $ 0 $ 1 $ 2
Restructuring reserve $ 5   5  
Rent paid     (3)  
Decrease in restructuring reserve     $ (2)  
Minimum [Member]        
Restructuring Cost and Reserve [Line Items]        
Period to settle restructuring liability (in years)     1 year