Financial Instruments, Derivatives and Fair Value Measures - Gain or Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Not designated as hedging instrument
Gain (loss) on derivatives
Income (expense) and Gains (loss) Reclassified into Income	$ (100)	$ 49	$ (198)	$ 124
Foreign currency forward exchange contracts | Cash flow hedges | Designated as hedging instrument | Cost of products sold
Gain (loss) on derivatives
Gain (loss) Recognized in Other Comprehensive Income (loss)	103	99	(35)	78
Income (expense) and Gains (loss) Reclassified into Income	48	26	90	58
Debt | Net investment hedges | Designated as hedging instrument
Gain (loss) on derivatives
Gain (loss) Recognized in Other Comprehensive Income (loss)	(10)		(20)
Interest rate swaps | Fair value hedges | Designated as hedging instrument | Interest expense
Gain (loss) on derivatives
Income (expense) and Gains (loss) Reclassified into Income	$ (11)	$ 35	$ 184	$ 174