Financing Receivables - Transfer of Financing Assets (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Financing receivables
Financing receivable transferred, net gain (loss)	$ (69)	$ (38)
Commercial Financing Receivables
Financing receivables
Financing receivables transferred	6,453	6,091
Financing receivables transferred and uncollected	$ 836	$ 816

Amount of decrease in financing receivable from sale and reclassification to held-for-sale. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-11

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B

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