Investments, Available For Sale Investments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Available-for-sale Securities [Abstract]
Fair Value	$ 6,621
Adjusted Cost, Total	8,149	$ 14,344
Gross Unrealized Gains, Total	2,693	3,372
Gross Unrealized Losses, Total	(29)	(34)
Fair Value, Total	10,813	17,682
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	7,100	4,100	$ 2,200
Available-for-sale Securities, Gross Realized Gains	3,500	538	$ 133
Due in 1 year or less, Fair Value	2,573
Due in 1-2 years, Fair Value	1,776
Due in 2-5 years, Fair Value	1,866
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	71
Instruments not due at a single maturity date, Fair Value	335
Corporate debt
Available-for-sale Securities [Abstract]
Adjusted Cost	2,294	3,847
Gross Unrealized Gains	4	4
Gross Unrealized Losses	(13)	(14)
Fair Value	2,285	3,837
Financial institution instruments
Available-for-sale Securities [Abstract]
Adjusted Cost	3,387	6,098
Gross Unrealized Gains	3	5
Gross Unrealized Losses	(9)	(11)
Fair Value	3,381	6,092
Government debt
Available-for-sale Securities [Abstract]
Adjusted Cost	961	1,581
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6)	(8)
Fair Value	955	1,573
Marketable equity securities
Available-for-sale Securities [Abstract]
Adjusted Cost	1,507	2,818
Gross Unrealized Gains	2,686	3,363
Gross Unrealized Losses	(1)	(1)
Fair Value	4,192	$ 6,180
Cloudera, Inc. [Member]
Available-for-sale Securities [Abstract]
Equity Method Investment, Other than Temporary Impairment	$ 278