Identifiable Intangible Assets and Goodwill - Finite-lived and Indefinite-lived Intangible Assets (Detail) - USD ($) $ in Millions		Oct. 02, 2016	Dec. 31, 2015
Indefinite-lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets		$ 17,487	$ 8,192
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		87,854	81,205
Finite-lived intangible assets, accumulated amortization	[1]	(51,103)	(49,040)
Finite-lived Intangible Assets, less Accumulated Amortization		36,750	32,165
Intangible assets, gross carrying amount	[1]	105,341	89,396
Identifiable Intangible Assets, less Accumulated Amortization	[1],[2]	54,238	40,356
Brands [Member]
Indefinite-lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets		6,918	7,021
In Process Research and Development [Member]
Indefinite-lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets		10,569	1,171
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		83,935	77,613
Finite-lived intangible assets, accumulated amortization		(49,105)	(47,193)
Finite-lived Intangible Assets, less Accumulated Amortization		34,830	30,419
Brands [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		2,117	1,973
Finite-lived intangible assets, accumulated amortization		(1,013)	(928)
Finite-lived Intangible Assets, less Accumulated Amortization		1,104	1,044
License Agreements and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		1,801	1,619
Finite-lived intangible assets, accumulated amortization		(985)	(918)
Finite-lived Intangible Assets, less Accumulated Amortization		816	701
Held-for-sale [Member] | HIS [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets reclassified to assets held for sale		$ 1,322	$ 0

[1] The increase in Identifiable intangible assets, less accumulated amortization, is primarily related to assets acquired as part of the acquisitions of Medivation, Anacor and Bamboo (see Note 2A), the impact of foreign exchange and the impact of measurement period adjustments related to our acquisition of Hospira (see Note 2A), partially offset by amortization, impairments and the reclassification of $1.3 billion to Assets held for sale during the third quarter of 2016 (see Note 2B). For information about impairments, see Note 4.

[2] Amounts may not add due to rounding.