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Accelerated Share Repurchase Activity and Related Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands
 2 Months Ended 3 Months Ended 7 Months Ended 12 Months Ended
Dec. 26, 2015
Jul. 31, 2015
Feb. 28, 2015
Dec. 27, 2014
November 2015 ASR        
Accelerated Share Repurchases [Line Items]        
Purchase Period End Date 2016-04      
Number of Shares [1] 20,382      
Average Repurchase Price Per Share [1]      
ASR Amount $ 3,000,000,000      
May 2015 ASR        
Accelerated Share Repurchases [Line Items]        
Purchase Period End Date   2015-07    
Number of Shares   48,293    
Average Repurchase Price Per Share   $ 124.24    
ASR Amount   $ 6,000,000,000    
August 2014 ASR        
Accelerated Share Repurchases [Line Items]        
Purchase Period End Date     2015-02  
Number of Shares     81,525  
Average Repurchase Price Per Share     $ 110.40  
ASR Amount     $ 9,000,000,000  
January 2014 ASR        
Accelerated Share Repurchases [Line Items]        
Purchase Period End Date       2014-12
Number of Shares       134,247
Average Repurchase Price Per Share       $ 89.39
ASR Amount       $ 12,000,000,000
[1] "Number of Shares" represents those shares delivered in the beginning of the purchase period and does not represent the final number of shares to be delivered under the ASR. The total number of shares ultimately delivered, and therefore the average repurchase price paid per share, will be determined at the end of the applicable purchase period based on the volume-weighted average price of the Company's common stock during that period. The November 2015 ASR purchase period will end in or before April 2016.