Other Comprehensive Income (Loss), Reclassification out of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other, net	$ (126)	$ (13)	$ (208)	$ 13
Gains (losses) on equity investments, net	478	100	500	132
Income before taxes	1,670	2,983	4,178	5,656
Cost of sales	(5,560)	(4,947)	(11,132)	(9,998)
Research and development	(3,145)	(3,087)	(6,391)	(6,082)
Marketing, general and administrative	(2,007)	(1,949)	(4,233)	(3,902)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			(28)
Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before taxes	374	(150)	423	(211)
Unrealized holding gains (losses) on available-for-sale investments [Member] \| Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other, net	1	0	0	0
Gains (losses) on equity investments, net	402	20	488	74
Income before taxes	403	20	488	74
Unrealized holding gains (losses) on derivatives [Member] \| Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before taxes	(13)	(154)	(35)	(253)
Unrealized holding gains (losses) on derivatives [Member] \| Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member] \| Currency Forwards [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains (losses) on equity investments, net	10	0	10	0
Cost of sales	(17)	(93)	(59)	(136)
Research and development	7	(48)	(3)	(95)
Marketing, general and administrative	3	(13)	(1)	(22)
Unrealized holding gains (losses) on derivatives [Member] \| Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member] \| Other Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other, net	(17)	0	17	0
Gains (losses) on equity investments, net	1	0	1	0
Prior service credits (costs) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassified out of Accumulated Other Comprehensive Income (Loss), Prior Service (Credits) Costs	(2)	(2)	(4)	(4)
Actuarial gains (losses) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassified out of Accumulated Other Comprehensive Income (Loss), Actuarial Gains (Losses)	(14)	(14)	(26)	(28)
Amortization of pension and postretirement benefit components [Member] \| Reclassified out of Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before taxes	$ (16)	$ (16)	$ (30)	$ (32)

Gains (losses) on equity investments, net

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Interest and other, net

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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-Publisher FASB
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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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