Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Cash Flow Hedging [Member] - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gain recognized in other comprehensive income (OCI)		$ 72	$ 11	$ 38
Gain/(loss) reclassified from accumulated OCI into income (effective)	[1]	11	12	(13)
Sales [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)	[1]			1
Interest Rate Hedge [Member]
Gain recognized in other comprehensive income (OCI)			16
Interest Rate Hedge [Member] | Cost of Sales [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)	[1]	11	13	(12)
Foreign Exchange Contracts [Member]
Gain recognized in other comprehensive income (OCI)		$ 72	(5)	38
Foreign Exchange Contracts [Member] | Other Expense [Member]
Gain/(loss) reclassified from accumulated OCI into income (effective)	[1]		$ (1)	$ (2)

[1] The effect of gain (loss) reclassified from accumulated OCI into income is not material to the financial statement line items in which effects of cash flow hedges are recorded for 2019, 2018 and 2017.