Derivative financial instruments and risk management (Details 2) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivatives Fair Value
Asset Fair Value	$ 342	$ 281
Liability Fair Value	(130)	(298)
Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	134	196
Liability Fair Value	(47)	(38)
Financial Products
Derivatives Fair Value
Asset Fair Value	208	85
Liability Fair Value	(83)	(260)
Designated derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	187	20
Undesignated derivatives
Derivatives Fair Value
Asset (Liability) Fair Value	25	(37)
Foreign exchange contracts \| Designated derivatives \| Receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	58	74
Foreign exchange contracts \| Designated derivatives \| Receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	109	1
Foreign exchange contracts \| Designated derivatives \| Long-term receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	28	71
Foreign exchange contracts \| Designated derivatives \| Long-term receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	33	1
Foreign exchange contracts \| Designated derivatives \| Accrued expenses \| Machinery, Energy & Transportation
Derivatives Fair Value
Liability Fair Value	(26)	(36)
Foreign exchange contracts \| Designated derivatives \| Accrued expenses \| Financial Products
Derivatives Fair Value
Liability Fair Value	(32)	(148)
Foreign exchange contracts \| Designated derivatives \| Other Liabilities \| Machinery, Energy & Transportation
Derivatives Fair Value
Liability Fair Value	(6)	(1)
Foreign exchange contracts \| Undesignated derivatives \| Receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	18	10
Foreign exchange contracts \| Undesignated derivatives \| Receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	21	17
Foreign exchange contracts \| Undesignated derivatives \| Long-term receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	7	7
Foreign exchange contracts \| Undesignated derivatives \| Accrued expenses \| Machinery, Energy & Transportation
Derivatives Fair Value
Liability Fair Value	(6)	(1)
Foreign exchange contracts \| Undesignated derivatives \| Accrued expenses \| Financial Products
Derivatives Fair Value
Liability Fair Value	(36)	(107)
Interest rate contracts \| Designated derivatives \| Receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	7	2
Interest rate contracts \| Designated derivatives \| Long-term receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	0	4
Interest rate contracts \| Designated derivatives \| Long-term receivables - trade and other \| Financial Products
Derivatives Fair Value
Asset Fair Value	31	57
Interest rate contracts \| Designated derivatives \| Accrued expenses \| Financial Products
Derivatives Fair Value
Liability Fair Value	(15)	(5)
Commodity contracts \| Undesignated derivatives \| Receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	30	35
Commodity contracts \| Undesignated derivatives \| Long-term receivables - trade and other \| Machinery, Energy & Transportation
Derivatives Fair Value
Asset Fair Value	0	2
Commodity contracts \| Undesignated derivatives \| Accrued expenses \| Machinery, Energy & Transportation
Derivatives Fair Value
Liability Fair Value	$ (9)	$ 0

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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Fair value, before effects of master netting arrangements, of a financial liability or 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 liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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

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