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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 26, 2015
Sep. 26, 2015
Jun. 27, 2015
Income Taxes [Line Items]      
Decrease in tax credit carry forward $ 6    
Expected decrease in unrecognized tax benefits in the next 12 months     $ 5
Foreign      
Income Taxes [Line Items]      
Valuation allowances, tax benefit   $ 3  
United States      
Income Taxes [Line Items]      
Estimated valuation allowance 488 488  
Expected to be released in 2016 | Minimum      
Income Taxes [Line Items]      
Estimated valuation allowance 260 260  
Expected to be released in 2016 | Maximum      
Income Taxes [Line Items]      
Estimated valuation allowance $ 350 $ 350