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Hedging Activities (Effect on Consolidated Financial Statements) (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Gain (loss) recognized in income		$ 182	$ (641)
Foreign Exchange Contracts, Balance Sheet [Member] | Other Expense [Member]
Gain (loss) recognized in income		(2)	(19)
Foreign Exchange Contracts, Loans [Member] | Translated Earnings Contract Gain (Loss), Net [Member]
Gain (loss) recognized in income	[1]	$ 184	$ (622)
[1] The impact to income was primarily driven by yen-denominated hedges of translated earnings

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

+ Details

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