Derivative Financial instruments and Risk Management- Asset (liability) fair value (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivatives Fair Value
Asset Fair Value	$ 300	$ 281
Liability Fair Value	(158)	(298)
Designated Derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	47	20
Undesignated Derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	95	(37)
Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	158	196
Liability Fair Value	(69)	(38)
Machinery, Energy & Transportation \| Designated Derivatives \| Foreign exchange contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	47	74
Machinery, Energy & Transportation \| Designated Derivatives \| Foreign exchange contracts \| Long-term receivables-trade and other
Derivatives Fair Value
Asset Fair Value	60	71
Machinery, Energy & Transportation \| Designated Derivatives \| Foreign exchange contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	(48)	(36)
Machinery, Energy & Transportation \| Designated Derivatives \| Foreign exchange contracts \| Other Liabilities
Derivatives Fair Value
Liability Fair Value	(13)	(1)
Machinery, Energy & Transportation \| Designated Derivatives \| Interest rate contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	0	4
Machinery, Energy & Transportation \| Undesignated Derivatives \| Foreign exchange contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	8	10
Machinery, Energy & Transportation \| Undesignated Derivatives \| Foreign exchange contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	(6)	(1)
Machinery, Energy & Transportation \| Undesignated Derivatives \| Commodity contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	40	35
Machinery, Energy & Transportation \| Undesignated Derivatives \| Commodity contracts \| Long-term receivables-trade and other
Derivatives Fair Value
Asset Fair Value	3	2
Machinery, Energy & Transportation \| Undesignated Derivatives \| Commodity contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	(2)	0
Financial Products
Derivatives Fair Value
Asset Fair Value	142	85
Liability Fair Value	(89)	(260)
Financial Products \| Designated Derivatives \| Foreign exchange contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	0	1
Financial Products \| Designated Derivatives \| Foreign exchange contracts \| Long-term receivables-trade and other
Derivatives Fair Value
Asset Fair Value	34	1
Financial Products \| Designated Derivatives \| Foreign exchange contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	(64)	(148)
Financial Products \| Designated Derivatives \| Interest rate contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	0	2
Financial Products \| Designated Derivatives \| Interest rate contracts \| Long-term receivables-trade and other
Derivatives Fair Value
Asset Fair Value	41	57
Financial Products \| Designated Derivatives \| Interest rate contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	(10)	(5)
Financial Products \| Undesignated Derivatives \| Foreign exchange contracts \| Receivables-trade and other
Derivatives Fair Value
Asset Fair Value	60	17
Financial Products \| Undesignated Derivatives \| Foreign exchange contracts \| Long-term receivables-trade and other
Derivatives Fair Value
Asset Fair Value	7	7
Financial Products \| Undesignated Derivatives \| Foreign exchange contracts \| Accrued Expenses
Derivatives Fair Value
Liability Fair Value	$ (15)	$ (107)

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- 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
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