Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 29, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018	Dec. 30, 2018
Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 1,100		$ 1,100	$ 3,300	$ 3,300
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	11,165			11,165		$ 9,190
Total intangible assets - net	47,846			47,846		47,611
Trademarks
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	6,875			6,875		6,937
Purchased In-Process Research And Development
Intangible assets with indefinite lives:
Indefinite-Lived Intangible Assets	4,290			4,290		2,253
Patents And Trademarks
Intangible assets with definite lives:
Finite-Lived Intangible Assets, Gross	36,114			36,114		35,194
Less accumulated amortization	12,158			12,158		9,784
Finite-Lived Intangible Assets, Net	23,956			23,956		25,410
Customer relationships and other intangible assets
Intangible assets with definite lives:
Finite-Lived Intangible Assets, Gross	21,845			21,845		21,334
Less accumulated amortization	9,120			9,120		8,323
Finite-Lived Intangible Assets, Net	$ 12,725			$ 12,725		$ 13,011
Alios Biopharma Inc | Purchased In-Process Research And Development
Intangible assets with indefinite lives:
Impairment charge		$ 900	$ 800