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Financial Instruments - Derivative Instruments Fair Value and Measurement Inputs (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Total derivatives	$ 93	$ (251)
Currency exchange contracts
Derivative [Line Items]
Total derivatives	68	15
Commodity contracts
Derivative [Line Items]
Total derivatives	145	77
Interest rate contracts
Derivative [Line Items]
Total derivatives	(180)	(328)
Net investment hedge derivative contracts
Derivative [Line Items]
Total derivatives	60	(15)
Quoted Prices in Active Markets for Identical Assets (Level 1)
Derivative [Line Items]
Total derivatives	68	46
Quoted Prices in Active Markets for Identical Assets (Level 1) | Currency exchange contracts
Derivative [Line Items]
Total derivatives	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity contracts
Derivative [Line Items]
Total derivatives	68	46
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contracts
Derivative [Line Items]
Total derivatives	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Net investment hedge derivative contracts
Derivative [Line Items]
Total derivatives	0	0
Significant Other Observable Inputs (Level 2)
Derivative [Line Items]
Total derivatives	25	(297)
Significant Other Observable Inputs (Level 2) | Currency exchange contracts
Derivative [Line Items]
Total derivatives	68	15
Significant Other Observable Inputs (Level 2) | Commodity contracts
Derivative [Line Items]
Total derivatives	77	31
Significant Other Observable Inputs (Level 2) | Interest rate contracts
Derivative [Line Items]
Total derivatives	(180)	(328)
Significant Other Observable Inputs (Level 2) | Net investment hedge derivative contracts
Derivative [Line Items]
Total derivatives	60	(15)
Significant Unobservable Inputs (Level 3)
Derivative [Line Items]
Total derivatives	0	0
Significant Unobservable Inputs (Level 3) | Currency exchange contracts
Derivative [Line Items]
Total derivatives	0	0
Significant Unobservable Inputs (Level 3) | Commodity contracts
Derivative [Line Items]
Total derivatives	0	0
Significant Unobservable Inputs (Level 3) | Interest rate contracts
Derivative [Line Items]
Total derivatives	0	0
Significant Unobservable Inputs (Level 3) | Net investment hedge derivative contracts
Derivative [Line Items]
Total derivatives	$ 0	$ 0

X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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- Definition

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+ References

No definition available.

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