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Estimated Future Amortization Expense for Intangible Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 26, 2015
Finite Lived Intangible Assets And Liabilities Future Amortization Expense [Line Items]    
2017 $ 7  
2018 5  
2019 4  
2020 4  
2021 4  
Thereafter 9  
Net Carrying Value $ 33 $ 53