DERIVATIVES AND HEDGING ACTIVITIES - Risk Participation and Credit Risk Related Contingent Features (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) item	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)
DERIVATIVES AND HEDGING ACTIVITIES
Notional amounts of risk participation agreements for derivative liabilities	$ 93.9		$ 71.1
Credit Risk Related Contingent Features [Abstract]
Derivatives in a net liability position	0.0
Termination value of derivatives	$ 0.0	$ 785.0
Number of provisions breached \| item	0

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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

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