Financial Instruments, Hedging Activities and Fair Value Measurements (Cash Flow and Net Investment Hedges) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Fair Value Hedging | Interest rate swaps | Interest expense
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 5	$ 1
Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	0	(3)
Gain (Loss) Recognized Amount	31	29
Cash Flow Hedging | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	0	(3)
Gain (Loss) Recognized Amount	0	(4)
Net Investment Hedging
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	21	28
Gain (Loss) Recognized Amount	9	8
Net Investment Hedging | Cross currency swaps
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	(4)	6
Gain (Loss) Recognized Amount	9	8
Net Investment Hedging | Foreign denominated debt
Derivatives, Fair Value [Line Items]
Gain (Loss) Deferred in OCI	25	22
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other charges and Cost of sales
Derivatives, Fair Value [Line Items]
Gain (Loss) Recognized Amount	$ 26	$ 32