Financial Instruments, Derivatives and Fair Value Measures - Gain or Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Foreign currency forward exchange contracts | Not designated as hedging instrument
Gain (loss) on derivatives
Income (expense) and Gains (loss) Reclassified into Income	$ (16)	$ 67	$ 33	$ (98)
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)	(88)	(89)	46	138
Income (expense) and Gains (loss) Reclassified into Income	(92)	31	(115)	42
Debt | Net investment hedges | Designated as hedging instrument
Gain (loss) on derivatives
Gain (loss) Recognized in Other Comprehensive Income (loss)	2	(2)	37	(10)
Interest rate swaps | Fair value hedges | Designated as hedging instrument | Interest expense
Gain (loss) on derivatives
Income (expense) and Gains (loss) Reclassified into Income	$ 2	$ 27	$ (67)	$ 195