Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	Sep. 27, 2020	Dec. 29, 2019
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	$ 12,695	$ 11,569
Total intangible assets - net	47,006	47,643
Trademarks
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	6,995	6,922
Purchased In-Process Research And Development
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	5,700	4,647
Patents And Trademarks
Intangible assets with definite lives:
Finite-Lived Intangible Assets, Gross	38,381	36,634
Less accumulated amortization	16,098	13,154
Finite-Lived Intangible Assets, Net	22,283	23,480
Customer relationships and other intangible assets
Intangible assets with definite lives:
Finite-Lived Intangible Assets, Gross	22,455	22,056
Less accumulated amortization	10,427	9,462
Finite-Lived Intangible Assets, Net	$ 12,028	$ 12,594