Leases Lessor arrangements- Equipment leased to others (Details) - Machinery, equipment and other - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Equipment leased to others
Equipment leased to others - at original cost	$ 5,733	$ 6,077
Less: Accumulated depreciation	(1,870)	(2,035)
Equipment leased to others - net	$ 3,863	$ 4,042

Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
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-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919398-209981

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant