Annual report pursuant to Section 13 and 15(d)

Investments, Available For Sale Investments (Detail)

v3.6.0.2
Investments, Available For Sale Investments (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Available-for-sale Securities [Abstract]      
Fair Value $ 11,502    
Adjusted Cost, Total 14,344 $ 19,311  
Gross Unrealized Gains, Total 3,372 2,710  
Gross Unrealized Losses, Total (34) (14)  
Fair Value, Total 17,682 22,007  
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds 4,100 2,200 $ 1,700
Available-for-sale Securities, Gross Realized Gains 538 133 $ 136
Due in 1 year or less, Fair Value 4,866    
Due in 1-2 years, Fair Value 1,956    
Due in 2-5 years, Fair Value 2,760    
Instruments not due at a single maturity date, Fair Value 1,920    
Corporate debt      
Available-for-sale Securities [Abstract]      
Adjusted Cost 3,847 4,169  
Gross Unrealized Gains 4 3  
Gross Unrealized Losses (14) (11)  
Fair Value 3,837 4,161  
Financial institution instruments      
Available-for-sale Securities [Abstract]      
Adjusted Cost 6,098 11,140  
Gross Unrealized Gains 5 1  
Gross Unrealized Losses (11) (2)  
Fair Value 6,092 11,139  
Government debt      
Available-for-sale Securities [Abstract]      
Adjusted Cost 1,581 748  
Gross Unrealized Gains 0 0  
Gross Unrealized Losses (8) (1)  
Fair Value 1,573 747  
Marketable equity securities      
Available-for-sale Securities [Abstract]      
Adjusted Cost 2,818 3,254  
Gross Unrealized Gains 3,363 2,706  
Gross Unrealized Losses (1) 0  
Fair Value $ 6,180 $ 5,960