DERIVATIVES - Gains (Losses) Included in Other Revenue (Details) - Other revenue - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative gain (losses)
Gains (losses) included in Other revenue	$ (263)	$ 85	$ (172)
Interest rate hedges
Derivative gain (losses)
Gains (losses) included in Other revenue	(47)	141	(70)
Foreign exchange
Derivative gain (losses)
Gains (losses) included in Other revenue	$ (216)	$ (56)	$ (102)

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480434/815-10-50-4CC

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration