CREDIT CARD AND OTHER LOANS - Securitized Credit Card Receivables (Details) $ in Millions	1 Months Ended	6 Months Ended
Apr. 30, 2022 USD ($)	Jun. 30, 2022 USD ($) item	Jun. 30, 2021 USD ($) item	Dec. 31, 2021 item
Portfolio Held For Sale
Number of credit card portfolios held for sale		0		0
Number of credit card portfolios sold		0	0
Portfolio Acquisitions
Purchase price of credit card portfolio \| $	$ 249	$ 249	$ 32

The cash outflow for the purchase of amounts due from customers, clients, lessees, borrowers, or others under the terms of its agreements therewith.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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