Quarterly report pursuant to Section 13 or 15(d)

Common Stock Repurchases (Detail)

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Common Stock Repurchases (Detail) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 26, 2015
Sep. 27, 2014
Sep. 26, 2015
Sep. 27, 2014
Common Stock Repurchase Program [Member]        
Common Stock Repurchases [Line Items]        
Stock Repurchase Program, Authorized Amount $ 65,000   $ 65,000  
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 9,900   $ 9,900  
Stock Repurchased During Period, Shares 34.8   79.7  
Stock Repurchased During Period, Value $ 1,000   $ 2,500  
Stock Repurchased and Retired During Period, Shares   119.5   217.4
Stock Repurchased and Retired During Period, Value   $ 4,100   $ 6,800
Accumulated Stock Repurchased During Program, Total Shares 4,800.0   4,800.0  
Accumulated Stock Repurchased During Program, Total Value $ 104,000   $ 104,000  
Restricted Stock Unit Withholdings [Member]        
Common Stock Repurchases [Line Items]        
Stock Repurchased and Retired During Period, Shares     12.8 11.7
Stock Repurchased and Retired During Period, Value     $ 416 $ 314