Acquisitions (Detail) (USD $)	9 Months Ended	1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended				9 Months Ended		9 Months Ended		1 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended
	Oct. 01, 2011 Acquisition-Related Developed Technology [Member] Series of Individually Immaterial Business Acquisitions [Member] Years	Feb. 28, 2011 Acquisition-Related Developed Technology [Member] McAfee, Inc. [Member] Years	Oct. 01, 2011 Acquisition-Related Customer Relationships [Member] Series of Individually Immaterial Business Acquisitions [Member] Years	Feb. 28, 2011 Acquisition-Related Customer Relationships [Member] McAfee, Inc. [Member] Years	Oct. 01, 2011 Other Intangible Assets [Member] Series of Individually Immaterial Business Acquisitions [Member] Years	Oct. 01, 2011 Total Finite Lived Intangible Assets [Member] Series of Individually Immaterial Business Acquisitions [Member]	Feb. 28, 2011 Total Finite Lived Intangible Assets [Member] McAfee, Inc. [Member]	Feb. 28, 2011 Acquisition-Related Trade Names [Member] McAfee, Inc. [Member]	Oct. 01, 2011 In-Process Research And Development [Member] Series of Individually Immaterial Business Acquisitions [Member]	Feb. 28, 2011 In-Process Research And Development [Member] McAfee, Inc. [Member]	Oct. 01, 2011 Series of Individually Immaterial Business Acquisitions [Member]	Jan. 31, 2011 Infineon's Wireless Solutions Business [Member]	Feb. 28, 2011 McAfee, Inc. [Member]	Sep. 25, 2010 McAfee, Inc. [Member]	Sep. 25, 2010 McAfee, Inc. [Member]	Apr. 02, 2011 McAfee, Inc. [Member]	Oct. 01, 2011 McAfee, Inc. and Series of Individually Immaterial Business Acquisitions [Member]	Sep. 25, 2010 McAfee, Inc. and Series of Individually Immaterial Business Acquisitions [Member]	Oct. 01, 2011 McAfee, Inc. and Series of Individually Immaterial Business Acquisitions [Member]	Sep. 25, 2010 McAfee, Inc. and Series of Individually Immaterial Business Acquisitions [Member]
Acquisitions [Abstract]
Date of business acquisition																Feb. 28, 2011
Cash Acquired From Acquisition													$ 943,000,000
Cash												1,400,000,000	6,652,000,000
Share-based awards assumed													48,000,000
Total Consideration													6,700,000,000
Marketable debt securities													329,000,000
Goodwill													4,299,000,000
Identified intangible assets		1,221,000,000		1,418,000,000			2,639,000,000	821,000,000		92,000,000			3,552,000,000
Deferred tax assets													738,000,000
Other assets													417,000,000
Deferred income													(1,049,000,000)
Deferred tax liabilities													(1,191,000,000)
Other liabilities													(395,000,000)
Total fair value of the assets acquired and liabilities assumed													6,700,000,000
Estimated useful life (in years)		4
Estimated useful life (in years)	3		5	2	2
Estimated useful life (in years)	9		8	7	5
Total Consideration											1,900,000,000
Fair value of net tangible assets acquired											202,000,000
Goodwill											353,000,000
Identified intangible assets	1,054,000,000		116,000,000		43,000,000	1,213,000,000			119,000,000		1,332,000,000
Total fair value of the assets acquired and liabilities assumed											1,887,000,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual																	1,100,000,000		2,700,000,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual																	(35,000,000)		(155,000,000)
Nonrecurring adjustment included in pro forma results which reduces net income due to revaluation of acquiree's historic deferred revenue														67,000,000	268,000,000
Net revenue																	14,272,000,000	12,134,000,000	40,803,000,000	34,728,000,000
Net income																	$ 3,492,000,000	$ 2,939,000,000	$ 9,684,000,000	$ 8,017,000,000
Diluted earnings per share																	$ 0.65	$ 0.52	$ 1.77	$ 1.41