Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Gain (loss) reclassified from accumulated OCI into income	$ (8)	$ 2
Sales [Member]
Gain (loss) reclassified from accumulated OCI into income	1
Cost of Sales [Member]
Gain (loss) reclassified from accumulated OCI into income	5	2
Other Expense [Member]
Gain (loss) reclassified from accumulated OCI into income	(14)
Cash Flow Hedging [Member]
Gain (loss) recognized in other comprehensive income (OCI)	(89)	9
Foreign Exchange Contracts [Member] | Cash Flow Hedging [Member]
Gain (loss) recognized in other comprehensive income (OCI)	$ (89)	$ 9