Financial Instruments, Derivatives and Fair Value Measures - Gain or Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Not designated as hedging instrument
Gain (loss) on derivatives
Income (expense) and Gain (loss) Reclassified into Income	$ (165)	$ 49
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)	227	(19)
Income (expense) and Gain (loss) Reclassified into Income	11	15
Debt | Net investment hedges | Designated as hedging instrument
Gain (loss) on derivatives
Gain (loss) Recognized in Other Comprehensive Income (loss)	(8)
Interest rate swaps | Fair value hedges | Designated as hedging instrument | Interest expense
Gain (loss) on derivatives
Income (expense) and Gain (loss) Reclassified into Income	$ 168	$ 43