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Basis of Presentation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 26, 2017
Mar. 27, 2016
Aug. 24, 2016
Basis of Presentation [Line Items]      
Income Tax Expense (Benefit) $ 232 $ 188  
AWE Management Limited      
Basis of Presentation [Line Items]      
Ownership interest percentage acquired     18.00%
Noncontrolling Interest, Ownership Percentage by Parent     51.00%
AWE Management Limited | Net Sales | Segment Concentration Risk | Space Systems      
Basis of Presentation [Line Items]      
Concentration percentage 100.00%    
AWE Management Limited | Net Sales | Equity Method Investment Risk | Space Systems      
Basis of Presentation [Line Items]      
Concentration percentage   0.00%  
AWE Management Limited | Operating profit | Segment Concentration Risk | Space Systems      
Basis of Presentation [Line Items]      
Concentration percentage 51.00%    
AWE Management Limited | Net Earnings | Equity Method Investment Risk | Space Systems      
Basis of Presentation [Line Items]      
Concentration percentage   33.00%  
Adjustments for New Accounting Principle, Early Adoption      
Basis of Presentation [Line Items]      
Income Tax Expense (Benefit)   $ 104  
Income tax benefit per share   $ 0.34