Intangible assets and goodwil - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2023	Jan. 01, 2023
Intangible assets with indefinite lives:
Indefinite lived intangible assets	$ 10,929	$ 11,316
Total intangible assets - net	34,175	38,489
Trademarks
Intangible assets with indefinite lives:
Indefinite lived intangible assets	1,714	1,630
Purchased in-process research and development
Intangible assets with indefinite lives:
Indefinite lived intangible assets	9,215	9,686
Patents And Trademarks
Intangible assets with definite lives:
Finite lived intangible assets gross	40,417	39,388
Less accumulated amortization	(24,808)	(20,616)
Finite lived intangible assets net	15,609	18,772
Customer relationships and other intangible assets
Intangible assets with definite lives:
Finite lived intangible assets gross	20,322	19,764
Less accumulated amortization	(12,685)	(11,363)
Finite lived intangible assets net	$ 7,637	$ 8,401