Acquisition-related Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	$ 23,759	$ 24,684
Accumulated Amortization	(10,996)	(10,973)
Definite-Lived Intangible Assets, Net	12,763	13,711
Indefinite-Lived Intangible Assets	1,251	1,267
Acquisition-related Intangible Assets, Gross	25,010	25,951
Acquisition-related Intangible Assets, net of Accumulated Amortization	14,014	14,978
Amortization of Acquisition-related Intangible Assets	$ 1,713	1,741	$ 1,594
Minimum [Member]
Intangible Assets [Line Items]
Estimated Useful Life (in years)	2 years
Maximum [Member]
Intangible Assets [Line Items]
Estimated Useful Life (in years)	20 years
Tradenames [Member]
Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 1,235	1,235
In-Process Research and Development [Member]
Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	16	32
Customer Relationships [Member]
Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	16,906	17,120
Accumulated Amortization	(6,997)	(6,833)
Definite-Lived Intangible Assets, Net	9,909	10,287
Product Technology [Member]
Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	5,544	6,036
Accumulated Amortization	(3,121)	(3,178)
Definite-Lived Intangible Assets, Net	2,423	2,858
Tradenames [Member]
Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	1,300	1,495
Accumulated Amortization	(869)	(929)
Definite-Lived Intangible Assets, Net	431	566
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Definite-Lived Intangible Assets, Gross	9	33
Accumulated Amortization	(9)	(33)
Definite-Lived Intangible Assets, Net	$ 0	$ 0