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Financial Instruments - Schedule of Derivative Instruments Not Designated as Hedging Instruments Table (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Amount of Pre-Tax Gain (Loss) Recognized in Earnings	$ (165)	$ 318	$ (115)
Debt-Related
Derivative [Line Items]
Amount of Pre-Tax Gain (Loss) Recognized in Earnings	(125)	253	(118)
Other Balance Sheet Items
Derivative [Line Items]
Amount of Pre-Tax Gain (Loss) Recognized in Earnings	$ (40)	$ 65	$ 3

X

- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4CC
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL109998890-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959

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- Definition

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+ References

No definition available.

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