Financial Instruments, Hedging Activities and Fair Value Measurements (Cash Flow and Net Investment Hedges) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair Value Hedging | Interest rate swaps | Interest expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 2	$ 0
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	4	0
Gain (Loss) Recognized Amount	18	5
Cash Flow Hedging | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	4	0
Gain (Loss) Recognized Amount	0	(1)
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	78	70
Gain (Loss) Recognized Amount	5	4
Net Investment Hedging | Cross currency swaps
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	42	13
Gain (Loss) Recognized Amount	5	4
Net Investment Hedging | Foreign denominated debt
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	36	57
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 16	$ 6