Cash and Investments, Available-for-Sale Investments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 29, 2012
Available-For-Sale Investments [Abstract]
Gross Unrealized Gains	$ 3,205				$ 1,079
Gross Unrealized Losses	(9)				(5)
Fair Value	11,693		11,693
Adjusted Cost, Total	15,011		15,011		12,927
Fair Value, Total	18,207		18,207		14,001
Due in 1 year or less, Cost	9,130		9,130
Due in 1-2 years, Cost	1,129		1,129
Due in 2-5 years, Cost	373		373
Instruments not due at a single maturity date, Cost	1,050		1,050
Cost, Total	11,682		11,682
Due in 1 year or less, Fair Value	9,137		9,137
Due in 1-2 years, Fair Value	1,137		1,137
Due in 2-5 years, Fair Value	372		372
Instruments not due at a single maturity date, Fair Value	1,047		1,047
Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds	266	1,500	864	2,100
Available-for-sale Securities, Gross Realized Gains	134	66	143	110
Asset-Backed Securities [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	11		11		14
Gross Unrealized Gains	0				0
Gross Unrealized Losses	(2)				(3)
Fair Value	9		9		11
Bank Deposits [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	2,634		2,634		1,417
Gross Unrealized Gains	4				1
Gross Unrealized Losses	(1)				0
Fair Value	2,637		2,637		1,418
Commercial Paper [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	4,658		4,658		4,184
Gross Unrealized Gains	0				1
Gross Unrealized Losses	0				0
Fair Value	4,658		4,658		4,185
Corporate Bonds [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	2,300		2,300		635
Gross Unrealized Gains	15				8
Gross Unrealized Losses	(3)				(1)
Fair Value	2,312		2,312		642
Government Bonds [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	1,524		1,524		2,235
Gross Unrealized Gains	0				0
Gross Unrealized Losses	(1)				0
Fair Value	1,523		1,523		2,235
Marketable Equity Securities [Member]
Available-For-Sale Investments [Abstract]
Gross Unrealized Gains	3,186				1,069
Gross Unrealized Losses	(1)				(1)
Adjusted Cost	3,329		3,329		3,356
Fair Value	6,514		6,514		4,424
Money Market Fund Deposits [Member]
Available-For-Sale Investments [Abstract]
Adjusted Cost	555		555		1,086
Gross Unrealized Gains	0				0
Gross Unrealized Losses	(1)				0
Fair Value	554		554		1,086
Clearwire Corportation [Member]
Available-For-Sale Investments [Abstract]
Proceeds from Sale, Maturity and Collection of Investments	142
Gain (Loss) On Sale Of Combined Investment	$ 111