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Other Changes In Plan Assets and Benefit Obligations Recognized In Other Comprehensive Loss (Income) (Detail) - North America - USD ($)
$ in Millions
12 Months Ended
Dec. 26, 2015
Dec. 27, 2014
Dec. 28, 2013
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated other comprehensive loss (income) at beginning of year $ 67 $ (26)  
Net loss (gain) 9 93 $ (26)
Accumulated other comprehensive loss (income) at end of year 76 67 $ (26)
Other Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated other comprehensive loss (income) at beginning of year 1    
Net loss (gain) (2) 1  
Accumulated other comprehensive loss (income) at end of year $ (1) $ 1