Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Sales [Member]
Gain (loss) reclassified from accumulated OCI into income	$ (2)		$ (4)
Cost of Sales [Member]
Gain (loss) reclassified from accumulated OCI into income	3	$ 2	7	$ 7
Other Expense [Member]
Gain (loss) reclassified from accumulated OCI into income			(14)
Cash Flow Hedging [Member]
Gain (loss) recognized in other comprehensive income (OCI)	16	(26)	(51)	(19)
Gain (loss) reclassified from accumulated OCI into income	1	2	(11)	7
Foreign Exchange Contracts [Member]
Gain (loss) recognized in other comprehensive income (OCI)	$ 16	$ (26)	$ (51)	$ (19)

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121558989&loc=d3e80720-113993

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580

Name:	us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration