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Income Taxes - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 28, 2015
Jun. 27, 2015
Income Taxes [Line Items]    
Decrease in unrecognized tax benefits   $ 4
Unrecognized tax benefits total   19
Net uncertain tax positions, if recognized affect effective tax rate   6
Expected decrease in unrecognized tax benefits in the next 12 months   $ 5
Foreign    
Income Taxes [Line Items]    
Income tax expense as a result of establishment of valuation allowance $ 3