Derivative and Other Financial Instruments (Derivatives Not Designated as Hedges Income Statement) (Details) - Derivatives not designated as hedges - Net Investment Hedging - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax amount of gain/(loss) recognized in earnings	$ (26)	$ (28)
Foreign exchange | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax amount of gain/(loss) recognized in earnings	(3)	4
Foreign exchange | Cost of products sold
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax amount of gain/(loss) recognized in earnings	3	(6)
Foreign exchange | Foreign exchange
Derivative Instruments, Gain (Loss) [Line Items]
Pre-tax amount of gain/(loss) recognized in earnings	$ (26)	$ (26)