Identified Intangible Assets, Finite-Lived Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014	Dec. 27, 2014
Identified Intangible Assets By Major Class [Abstract]
Gross Assets, Subject to Amortization	$ 7,744		$ 7,744		$ 7,921
Accumulated Amortization	(4,692)		(4,692)		(4,466)
Net	3,052		3,052		3,455
Identified Intangible Assets, Amortization Expenses [Abstract]
Amortization of intangibles	215	$ 307	680	$ 884
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense, Remainder of 2015	208		208
Future Amortization Expense, 2016	758		758
Future Amortization Expense, 2017	479		479
Future Amortization Expense, 2018	313		313
Future Amortization Expense, 2019	286		286
Acquisition-related Developed Technology [Member]
Identified Intangible Assets By Major Class [Abstract]
Gross Assets, Subject to Amortization	2,846		2,846		3,009
Accumulated Amortization	(2,202)		(2,202)		(2,192)
Net	644		644		817
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense, Remainder of 2015	72		72
Future Amortization Expense, 2016	251		251
Future Amortization Expense, 2017	105		105
Future Amortization Expense, 2018	86		86
Future Amortization Expense, 2019	77		77
Acquisition-related Developed Technology [Member] | Cost of sales [Member]
Identified Intangible Assets, Amortization Expenses [Abstract]
Amortization of intangibles	76	161	271	454
Acquisition-related Customer Relationships [Member]
Identified Intangible Assets By Major Class [Abstract]
Gross Assets, Subject to Amortization	1,733		1,733		1,698
Accumulated Amortization	(1,154)		(1,154)		(1,001)
Net	579		579		697
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense, Remainder of 2015	66		66
Future Amortization Expense, 2016	236		236
Future Amortization Expense, 2017	149		149
Future Amortization Expense, 2018	45		45
Future Amortization Expense, 2019	27		27
Acquisition-related Customer Relationships [Member] | Amortization of acquisition-related intangibles [Member]
Identified Intangible Assets, Amortization Expenses [Abstract]
Amortization of intangibles	66	75	192	214
Acquisition-related Trade Names [Member]
Identified Intangible Assets By Major Class [Abstract]
Gross Assets, Subject to Amortization	59		59		61
Accumulated Amortization	(53)		(53)		(49)
Net	6		6		12
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense, Remainder of 2015	3		3
Future Amortization Expense, 2016	3		3
Future Amortization Expense, 2017	0		0
Future Amortization Expense, 2018	0		0
Future Amortization Expense, 2019	0		0
Acquisition-related Trade Names [Member] | Amortization of acquisition-related intangibles [Member]
Identified Intangible Assets, Amortization Expenses [Abstract]
Amortization of intangibles	2	2	6	8
Licensed Technology and Patents [Member]
Identified Intangible Assets By Major Class [Abstract]
Gross Assets, Subject to Amortization	3,106		3,106		3,153
Accumulated Amortization	(1,283)		(1,283)		(1,224)
Net	1,823		1,823		$ 1,929
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future Amortization Expense, Remainder of 2015	67		67
Future Amortization Expense, 2016	268		268
Future Amortization Expense, 2017	225		225
Future Amortization Expense, 2018	182		182
Future Amortization Expense, 2019	182		182
Licensed Technology and Patents [Member] | Cost of sales [Member]
Identified Intangible Assets, Amortization Expenses [Abstract]
Amortization of intangibles	$ 71	$ 69	$ 211	$ 208