Identifiable Intangible Assets and Goodwill - Finite-lived and Indefinite-lived Intangible Assets (Detail) - USD ($) $ in Millions		Mar. 29, 2020	Dec. 31, 2019
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		$ 8,982	$ 8,983
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		91,221	91,425
Finite-lived intangible assets, accumulated amortization	[1]	(65,738)	(65,037)
Finite-lived intangible assets, net		25,482	26,387
Intangible assets, gross carrying amount	[1]	100,203	100,408
Finite-lived intangible assets, accumulated amortization	[1]	(65,738)	(65,037)
Identifiable Intangible Assets, less Accumulated Amortization	[1],[2]	34,464	35,370
Brands [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		1,991	1,991
In Process Research and Development [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	[1]	5,918	5,919
License Agreements and Other [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		1,073	1,073
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		88,519	88,730
Finite-lived intangible assets, accumulated amortization		(63,783)	(63,106)
Finite-lived intangible assets, net		24,736	25,625
Finite-lived intangible assets, accumulated amortization		(63,783)	(63,106)
Brands [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		922	922
Finite-lived intangible assets, accumulated amortization		(749)	(741)
Finite-lived intangible assets, net		173	181
Finite-lived intangible assets, accumulated amortization		(749)	(741)
License Agreements and Other [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount		1,779	1,772
Finite-lived intangible assets, accumulated amortization		(1,206)	(1,191)
Finite-lived intangible assets, net		574	582
Finite-lived intangible assets, accumulated amortization		$ (1,206)	$ (1,191)

[1] The decrease in Identifiable intangible assets, less accumulated amortization, is primarily due to amortization.

[2] Amounts may not add due to rounding.