Intangible Assets and Goodwill - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Jan. 02, 2022	Jan. 03, 2021
Intangible assets with indefinite lives:
Indefinite lived intangible assets			$ 16,822	$ 19,044
Total intangible assets - net			46,392	53,402
Trademarks
Intangible assets with indefinite lives:
Indefinite lived intangible assets			6,985	7,195
Purchased in-process research and development
Intangible assets with indefinite lives:
Indefinite lived intangible assets			9,837	11,849
Patents And Trademarks
Intangible assets with definite lives:
Finite lived intangible assets gross			38,572	39,990
Less accumulated amortization			(20,088)	(17,618)
Finite lived intangible assets net			18,484	22,372
Customer relationships and other intangible assets
Intangible assets with definite lives:
Finite lived intangible assets gross			23,011	22,898
Less accumulated amortization			(11,925)	(10,912)
Finite lived intangible assets net			11,086	$ 11,986
In Process Research and Development
Intangible assets with indefinite lives:
Impairment of intangible assets, excluding goodwill	$ 900	$ 100
Auris Health | In Process Research and Development
Intangible assets with indefinite lives:
Impairment of intangible assets, excluding goodwill			$ 900