Intangible Assets and Goodwill - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Research and Development in Process	$ 181	$ 890	$ 1,126
Intangible assets with indefinite lives:
Indefinite lived intangible assets	19,044	11,569
Total intangible assets - net	53,402	47,643
Trademarks
Intangible assets with indefinite lives:
Indefinite lived intangible assets	7,195	6,922
Purchased in-process research and development
Intangible assets with indefinite lives:
Indefinite lived intangible assets	11,849	4,647
Patents And Trademarks
Intangible assets with definite lives:
Finite lived intangible assets gross	39,990	36,634
Less accumulated amortization	17,618	13,154
Finite lived intangible assets net	22,372	23,480
Customer relationships and other intangible assets
Intangible assets with definite lives:
Finite lived intangible assets gross	22,898	22,056
Less accumulated amortization	10,912	9,462
Finite lived intangible assets net	11,986	$ 12,594
Momenta | In Process Research and Development
Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Research and Development in Process	6,000
bermekimab | In Process Research and Development
Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Research and Development in Process	800
Verb Surgical Inc. | In Process Research and Development
Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Research and Development in Process	$ 400